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  • Capistrano asks for SSH password when deploying from local machine to server

    - by GhostRider
    When I try to ssh to a server, I'm able to do it as my id_rsa.pub key is added to the authorized keys in the server. Now when I try to deploy my code via Capistrano to the server from my local project folder, the server asks for a password. I'm unable to understand what could be the issue if I'm able to ssh and unable to deploy to the same server. $ cap deploy:setup "no seed data" triggering start callbacks for `deploy:setup' * 13:42:18 == Currently executing `multistage:ensure' *** Defaulting to `development' * 13:42:18 == Currently executing `development' * 13:42:18 == Currently executing `deploy:setup' triggering before callbacks for `deploy:setup' * 13:42:18 == Currently executing `db:configure_mongoid' * executing "mkdir -p /home/deploy/apps/development/flyingbird/shared/config" servers: ["dev1.noob.com", "176.9.24.217"] Password: Cap script: # gem install capistrano capistrano-ext capistrano_colors begin; require 'capistrano_colors'; rescue LoadError; end require "bundler/capistrano" # RVM bootstrap # $:.unshift(File.expand_path('./lib', ENV['rvm_path'])) require 'rvm/capistrano' set :rvm_ruby_string, 'ruby-1.9.2-p290' set :rvm_type, :user # or :user # Application setup default_run_options[:pty] = true # allow pseudo-terminals ssh_options[:forward_agent] = true # forward SSH keys (this will use your SSH key to get the code from git repository) ssh_options[:port] = 22 set :ip, "dev1.noob.com" set :application, "flyingbird" set :repository, "repo-path" set :scm, :git set :branch, fetch(:branch, "master") set :deploy_via, :remote_cache set :rails_env, "production" set :use_sudo, false set :scm_username, "user" set :user, "user1" set(:database_username) { application } set(:production_database) { application + "_production" } set(:staging_database) { application + "_staging" } set(:development_database) { application + "_development" } role :web, ip # Your HTTP server, Apache/etc role :app, ip # This may be the same as your `Web` server role :db, ip, :primary => true # This is where Rails migrations will run # Use multi-staging require "capistrano/ext/multistage" set :stages, ["development", "staging", "production"] set :default_stage, rails_env before "deploy:setup", "db:configure_mongoid" # Uncomment if you use any of these databases after "deploy:update_code", "db:symlink_mongoid" after "deploy:update_code", "uploads:configure_shared" after "uploads:configure_shared", "uploads:symlink" after 'deploy:update_code', 'bundler:symlink_bundled_gems' after 'deploy:update_code', 'bundler:install' after "deploy:update_code", "rvm:trust_rvmrc" # Use this to update crontab if you use 'whenever' gem # after "deploy:symlink", "deploy:update_crontab" if ARGV.include?("seed_data") after "deploy", "db:seed" else p "no seed data" end #Custom tasks to handle resque and redis restart before "deploy", "deploy:stop_workers" after "deploy", "deploy:restart_redis" after "deploy", "deploy:start_workers" after "deploy", "deploy:cleanup" 'Create symlink for public uploads' namespace :uploads do task :symlink do run <<-CMD rm -rf #{release_path}/public/uploads && mkdir -p #{release_path}/public && ln -nfs #{shared_path}/public/uploads #{release_path}/public/uploads CMD end task :configure_shared do run "mkdir -p #{shared_path}/public" run "mkdir -p #{shared_path}/public/uploads" end end namespace :rvm do desc 'Trust rvmrc file' task :trust_rvmrc do run "rvm rvmrc trust #{current_release}" end end namespace :db do desc "Create mongoid.yml in shared path" task :configure_mongoid do db_config = <<-EOF defaults: &defaults host: localhost production: <<: *defaults database: #{production_database} staging: <<: *defaults database: #{staging_database} EOF run "mkdir -p #{shared_path}/config" put db_config, "#{shared_path}/config/mongoid.yml" end desc "Make symlink for mongoid.yml" task :symlink_mongoid do run "ln -nfs #{shared_path}/config/mongoid.yml #{release_path}/config/mongoid.yml" end desc "Fill the database with seed data" task :seed do run "cd #{current_path}; RAILS_ENV=#{default_stage} bundle exec rake db:seed" end end namespace :bundler do desc "Symlink bundled gems on each release" task :symlink_bundled_gems, :roles => :app do run "mkdir -p #{shared_path}/bundled_gems" run "ln -nfs #{shared_path}/bundled_gems #{release_path}/vendor/bundle" end desc "Install bundled gems " task :install, :roles => :app do run "cd #{release_path} && bundle install --deployment" end end namespace :deploy do task :start, :roles => :app do run "touch #{current_path}/tmp/restart.txt" end desc "Restart the app" task :restart, :roles => :app do run "touch #{current_path}/tmp/restart.txt" end desc "Start the workers" task :stop_workers do run "cd #{current_path}; RAILS_ENV=#{default_stage} bundle exec rake resque:stop_workers" end desc "Restart Redis server" task :restart_redis do "/etc/init.d/redis-server restart" end desc "Start the workers" task :start_workers do run "cd #{current_path}; RAILS_ENV=#{default_stage} bundle exec rake resque:start_workers" end end

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  • iproute2 not functioning ("RTNETLINK answers: Operation not supported")

    - by James Watt
    The command and error message: gtwy ~ # ip rule add from 64.251.23.186 table t1 RTNETLINK answers: Operation not supported Older article of the same problem, but it did not help me: http://forums.gentoo.org/viewtopic-t-696982-start-0-postdays-0-postorder-asc-highlight-.html I have looked on google at great lengths to try to find a solution. It seems that my kernel configuration is missing something? Any help or ideas would be appreciated. My system/kernel is: 2.6.36-gentoo-r5 #3 SMP Thu Jan 13 10:49:06 EST 2011 x86_64 Intel(R) Xeon(R) CPU X3220 @ 2.40GHz GenuineIntel GNU/Linux. I am posting this on SuperUser since this system is used as a workstation and this problem is unrelated to specific tasks that are handled exclusively by servers. iproute2 is installed: gtwy etc # emerge --search iproute2 Searching... [ Results for search key : iproute2 ] [ Applications found : 1 ] * sys-apps/iproute2 Latest version available: 2.6.35-r2 Latest version installed: 2.6.35-r2 Size of files: 378 kB Homepage: http://www.linuxfoundation.org/collaborate/workgroups/networking/iproute2 Description: kernel routing and traffic control utilities License: GPL-2 A small snippet of my kernel .config (view entire .config): gtwy linux # cat .config | grep NETLINK CONFIG_NETFILTER_NETLINK=y CONFIG_NETFILTER_NETLINK_QUEUE=y CONFIG_NETFILTER_NETLINK_LOG=y CONFIG_NF_CT_NETLINK=y CONFIG_SCSI_NETLINK=y gtwy linux # cat .config | grep IP_ADVANCED_ROUTER CONFIG_IP_ADVANCED_ROUTER=y gtwy linux # cat .config | grep INGRESS CONFIG_NET_SCH_INGRESS=y gtwy linux # cat .config | grep NET_SCHED CONFIG_NET_SCHED=y emerge --info Portage 2.1.9.25 (default/linux/amd64/10.0, gcc-4.1.2, glibc-2.10.1-r1, 2.6.36-gentoo-r5 x86_64) ================================================================= System uname: Linux-2.6.36-gentoo-r5-x86_64-Intel-R-_Xeon-R-_CPU_X3220_@_2.40GHz-with-gentoo-1.12.13 Timestamp of tree: Thu, 13 Jan 2011 01:15:01 +0000 app-shells/bash: 4.0_p37 dev-java/java-config: 1.3.7-r1, 2.1.10 dev-lang/python: 2.4.6, 2.5.4-r4, 2.6.5-r2, 3.1.2-r3 sys-apps/baselayout: 1.12.13 sys-apps/sandbox: 1.6-r2 sys-devel/autoconf: 2.13, 2.65 sys-devel/automake: 1.9.6-r2::<unknown repository>, 1.10.2, 1.11.1 sys-devel/binutils: 2.20.1-r1 sys-devel/gcc: 4.1.2, 4.3.4, 4.4.3-r2 sys-devel/gcc-config: 1.4.1 sys-devel/libtool: 2.2.6b sys-devel/make: 3.81 virtual/os-headers: 2.6.30-r1 (sys-kernel/linux-headers) ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="*" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=nocona -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /var/bind" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/php/apache2-php5/ext-active/ /etc/php/cgi-php5/ext-active/ /etc/php/cli-php5/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-march=nocona -O2 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="assume-digests binpkg-logs distlocks fixlafiles fixpackages news parallel-fetch protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch" GENTOO_MIRRORS="http://gentoo.chem.wisc.edu/gentoo" LC_ALL="en_US.UTF-8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" LINGUAS="en" MAKEOPTS="-j5" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage" SYNC="rsync://rsync.namerica.gentoo.org/gentoo-portage" USE="acl amd64 apache2 berkdb bzip2 cli cracklib crypt ctype cups curl cxx dri fortran gdbm gpm iconv jpeg jpeg2k libwww mmx modules mudflap multilib mysql ncurses nls nptl nptlonly openmp pam pcre perl php png pppd python readline session sockets sse sse2 ssl symlink sysfs tcpd threads unicode vhosts xml xorg xsl zlib" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ubx" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en" PHP_TARGETS="php5-3" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="fbdev glint intel mach64 mga neomagic nouveau nv r128 radeon savage sis tdfx trident vesa via vmware dummy v4l" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, LANG, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS

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  • Why do we get a sudden spike in response times?

    - by Christian Hagelid
    We have an API that is implemented using ServiceStack which is hosted in IIS. While performing load testing of the API we discovered that the response times are good but that they deteriorate rapidly as soon as we hit about 3,500 concurrent users per server. We have two servers and when hitting them with 7,000 users the average response times sit below 500ms for all endpoints. The boxes are behind a load balancer so we get 3,500 concurrents per server. However as soon as we increase the number of total concurrent users we see a significant increase in response times. Increasing the concurrent users to 5,000 per server gives us an average response time per endpoint of around 7 seconds. The memory and CPU on the servers are quite low, both while the response times are good and when after they deteriorate. At peak with 10,000 concurrent users the CPU averages just below 50% and the RAM sits around 3-4 GB out of 16. This leaves us thinking that we are hitting some kind of limit somewhere. The below screenshot shows some key counters in perfmon during a load test with a total of 10,000 concurrent users. The highlighted counter is requests/second. To the right of the screenshot you can see the requests per second graph becoming really erratic. This is the main indicator for slow response times. As soon as we see this pattern we notice slow response times in the load test. How do we go about troubleshooting this performance issue? We are trying to identify if this is a coding issue or a configuration issue. Are there any settings in web.config or IIS that could explain this behaviour? The application pool is running .NET v4.0 and the IIS version is 7.5. The only change we have made from the default settings is to update the application pool Queue Length value from 1,000 to 5,000. We have also added the following config settings to the Aspnet.config file: <system.web> <applicationPool maxConcurrentRequestsPerCPU="5000" maxConcurrentThreadsPerCPU="0" requestQueueLimit="5000" /> </system.web> More details: The purpose of the API is to combine data from various external sources and return as JSON. It is currently using an InMemory cache implementation to cache individual external calls at the data layer. The first request to a resource will fetch all data required and any subsequent requests for the same resource will get results from the cache. We have a 'cache runner' that is implemented as a background process that updates the information in the cache at certain set intervals. We have added locking around the code that fetches data from the external resources. We have also implemented the services to fetch the data from the external sources in an asynchronous fashion so that the endpoint should only be as slow as the slowest external call (unless we have data in the cache of course). This is done using the System.Threading.Tasks.Task class. Could we be hitting a limitation in terms of number of threads available to the process?

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  • I want to change DPI with Imagemagick without changing the actual byte-size of the image data

    - by user1694803
    I feel so horribly sorry that I have to ask this question here, but after hours of researching how to do an actually very simple task I'm still failing... In Gimp there is a very simple way to do what I want. I only have the German dialog installed but I'll try to translate it. I'm talking about going to "Picture-PrintingSize" and then adjusting the Values "X-Resolution" and "Y-Resolution" which are known to me as so called DPI values. You can also choose the format which by default is "Pixel/Inch". (In German the dialog is "Bild-Druckgröße" and there "X-Auflösung" and "Y-Auflösung") Ok, the values there are often "72" by default. When I change them to e.g. "300" this has the effect that the image stays the same on the computer, but if I print it, it will be smaller if you look at it, but all the details are still there, just smaller - it has a higher resolution on the printed paper (but smaller size... which is fine for me). I am often doing that when I am working with LaTeX, or to be exact with the command "pdflatex" on a recent Ubuntu-Machine. When I'm doing the above process with Gimp manually everything works just fine. The images will appear smaller in the resulting PDF but with high printing quality. What I am trying to do is to automate the process of going into Gimp and adjusting the DPI values. Since Imagemagick is known to be superb and I used it for many other tasks I tried to achieve my goal with this tool. But it does just not do what I want. After trying a lot of things I think this actually is be the command that should be my friend: convert input.png -density 300 output.png This should set the DPI to 300, as I can read everywhere in the web. It seems to work. When I check the file it stays the same. file input.png output.png input.png: PNG image data, 611 x 453, 8-bit grayscale, non-interlaced output.png: PNG image data, 611 x 453, 8-bit grayscale, non-interlaced When I use this command, it seems like it did what I wanted: identify -verbose output.png | grep 300 Resolution: 300x300 PNG:pHYs : x_res=300, y_res=300, units=0 (Funny enough, the same output comes for input.png which confuses me... so this might be the wrong parameters to watch?) But when I now render my TeX with "pdflatex" the image is still big and blurry. Also when I open the image with Gimp again the DPI values are set to "72" instead of "300". So there actually was no effect at all. Now what is the problem here. Am I getting something completely wrong? I can't be that wrong since everything works just fine with Gimp... Thanks for any help in this. I am also open to other automated solutions which are easily done on a Linux system...

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  • Scenarios for Bazaar and SVN interaction

    - by Adam Badura
    At our company we are using SVN repository. I'm doing programming from both work (main place) and home (mostly experiments and refactoring). Those are two different machines, in different networks and almost never turned on at the same time (after all I'm either at work or at home...) I wanted to give a chance to some distributed version control system and solve some of the issues associated with SVN based process and having two machines. From git, Mercurial and Bazaar I chose to start with Bazaar since it claims that it is designed do be used by human beings. Its my first time with distributed system and having nice and easy user interface was important for me. Features I wanted to achieve were: Being able to update from SVN repository and commit to it. Being able to commit locally steps of my work on a task. Being able to have few separate tasks at the same time in their own local branches. Being able to share those branches between my work and home computer. As a means of transport between work and home computer I wanted to use a pen-drive. Company server will not work since I may not instal there anything. Neither will work a web service repository as I may not upload source code to web (especially if it would be public which seems to be a common case in free web services). This transport should be Bazaar-based (or what ever else I will end with) so it can be done more or less automatically but manual copying and pasting some folders or generating patch files (providing they would work - I have bad experience with patch files in SVN) would work as well if there is no better solution. Yet the pen-drive should only be used for transportation. I do not want to edit or build there. I tried following Bazaar guidelines for integration with SVN. But I failed. I tried both bzr svn-import and bzr checkout providing URL from my repository as both https://... and svn+https://.... In some cases it had some issues with certificates but the output specified argument to ignore them so I did that. Sometimes it asked me to log in (in other cases maybe it remembered... I don't know) which I did. All were running very slow (this could be our server issue) and at some point were interrupted due to connection interruption (this almost for sure is our server issue: it truncates the connection after some time). But since (as opposed to SVN) restarting starts a new rather than from point where it was interrupted I was unable to reach all the ~19000 revisions (ending usually somewhere around 150). What and how should I do with Bazaar? Is is possible to somehow import SVN repository from the local checkout (so that I do not suffer the connection truncation)? I was told that a colleague that used to work with us has done something similar (importing SVN repository with full history) with Mercurial like in no time. So I'm seriously considering now trying Mercurial even if only to see if that will work. But also what are your general guidelines to achieve the listed features?

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  • What is consuming so much memory?

    - by Christopher
    Hi, I am having a few problems with my server. It is throwing up intermittant errors and running quite slow. Here is the output from top: top - 07:33:33 up 18:57, 1 user, load average: 0.00, 0.00, 0.00 Tasks: 90 total, 1 running, 82 sleeping, 7 stopped, 0 zombie Cpu(s): 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 1048576k total, 1048576k used, 0k free, 0k buffers Swap: 0k total, 0k used, 0k free, 0k cached Ordered by %MEM: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 9597 root 16 0 276m 91m 15m S 0.0 8.9 0:29.38 java 9564 tomcat 15 0 249m 34m 11m S 0.0 3.4 0:11.79 java 9636 root 18 0 54804 24m 9784 S 0.0 2.4 0:02.58 httpd 26139 apache 15 0 57520 23m 5996 S 0.0 2.3 0:00.15 httpd 16264 apache 18 0 56984 23m 6104 S 0.0 2.2 0:00.21 httpd 24294 apache 15 0 57512 22m 5864 S 0.0 2.2 0:00.17 httpd 30231 apache 15 0 57272 22m 5748 S 0.0 2.2 0:00.97 httpd 32257 apache 15 0 57512 22m 5416 S 0.0 2.2 0:00.46 httpd 19947 apache 15 0 57512 22m 5320 S 0.0 2.2 0:00.19 httpd 26148 apache 15 0 56688 22m 5992 S 0.0 2.2 0:00.40 httpd 14039 apache 18 0 57000 22m 5492 S 0.0 2.2 0:00.33 httpd 6051 apache 15 0 57736 22m 5128 S 0.0 2.2 0:00.07 httpd 19937 apache 15 0 56992 22m 5400 S 0.0 2.2 0:00.14 httpd 5200 apache 15 0 56984 22m 5376 S 0.0 2.2 0:00.23 httpd 10001 apache 15 0 55636 21m 5636 S 0.0 2.1 0:01.05 httpd 11734 apache 15 0 56712 21m 4548 S 0.0 2.1 0:00.46 httpd 18193 apache 15 0 55100 20m 5508 S 0.0 2.0 0:00.24 httpd 14036 apache 15 0 55128 20m 5412 S 0.0 2.0 0:00.10 httpd 3981 apache 15 0 55128 19m 4860 S 0.0 1.9 0:00.16 httpd 7588 apache 18 0 55112 19m 4848 S 0.0 1.9 0:00.04 httpd 19768 apache 16 0 55112 19m 4844 S 0.0 1.9 0:00.02 httpd 5827 apache 15 0 55112 19m 4828 S 0.0 1.9 0:00.05 httpd 29774 apache 15 0 55112 19m 4544 S 0.0 1.9 0:00.11 httpd 6064 apache 15 0 55112 19m 4536 S 0.0 1.9 0:00.02 httpd 16253 apache 17 0 55116 19m 4532 S 0.0 1.9 0:00.01 httpd 19922 apache 15 0 55112 19m 4540 S 0.0 1.9 0:00.02 httpd 10010 apache 15 0 55100 19m 4524 S 0.0 1.9 0:00.01 httpd 18195 apache 18 0 55104 18m 3872 S 0.0 1.8 0:00.02 httpd 7361 mysql 15 0 134m 18m 6400 S 0.0 1.8 0:10.18 mysqld 19921 apache 15 0 55088 18m 3588 S 0.0 1.8 0:00.02 httpd 11967 apache 15 0 55080 18m 3584 S 0.0 1.8 0:00.00 httpd 13813 apache 15 0 55088 18m 3576 S 0.0 1.8 0:00.14 httpd 23898 apache 18 0 54968 17m 3212 S 0.0 1.7 0:00.00 httpd 13792 apache 15 0 54968 17m 3088 S 0.0 1.7 0:00.00 httpd 14083 apache 15 0 54968 17m 3088 S 0.0 1.7 0:00.00 httpd 32547 apache 15 0 54944 17m 2924 S 0.0 1.7 0:00.00 httpd 13787 apache 15 0 54944 17m 2908 S 0.0 1.7 0:00.00 httpd 3623 apache 17 0 54944 17m 2908 S 0.0 1.7 0:00.00 httpd 16024 apache 19 0 54944 17m 2860 S 0.0 1.7 0:00.00 httpd 13791 apache 15 0 54944 17m 2864 S 0.0 1.7 0:00.00 httpd 20090 named 19 0 110m 4244 2056 S 0.0 0.4 0:01.55 named 9369 cyrus 15 0 15904 3048 1720 S 0.0 0.3 0:00.24 cyrus-master 32735 root 15 0 8852 2888 2116 T 0.0 0.3 0:00.00 mysql The intermittant error I get using Firefox is: Server not found Firefox can't find the server at XXXXXXX.co. * Check the address for typing errors such as ww.example.com instead of www.example.com * If you are unable to load any pages, check your computer's network connection. * If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the Web. And on other browsers, the page just loads for about 10 minutes but never appears. The only way to resolve it is to close the browser completely as the error appears to be saved in the cache. Has anyone got any ideas? Many Thanks.

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  • Low load average with plenty of cpu-intersive processes

    - by sds
    I see loadavg at about 1 with at least 3 processes running at full tile. How can that be? top - 11:48:32 up 147 days, 5:38, 8 users, load average: 1.08, 1.11, 1.05 Tasks: 416 total, 4 running, 410 sleeping, 2 stopped, 0 zombie Cpu0 : 43.3%us, 13.7%sy, 0.0%ni, 43.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu1 : 48.8%us, 12.4%sy, 0.0%ni, 38.8%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu2 : 0.7%us, 0.7%sy, 0.0%ni, 98.3%id, 0.0%wa, 0.0%hi, 0.3%si, 0.0%st Cpu3 : 99.3%us, 0.7%sy, 0.0%ni, 0.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu4 : 0.0%us, 0.3%sy, 0.0%ni, 99.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu5 : 5.7%us, 0.7%sy, 0.0%ni, 93.6%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu6 : 2.3%us, 0.3%sy, 0.0%ni, 97.4%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu7 : 0.3%us, 0.3%sy, 0.0%ni, 99.0%id, 0.0%wa, 0.0%hi, 0.3%si, 0.0%st Cpu8 : 38.4%us, 17.4%sy, 0.0%ni, 44.2%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu9 : 43.4%us, 13.5%sy, 0.0%ni, 43.1%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu10 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu11 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu12 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu13 : 0.3%us, 0.3%sy, 0.0%ni, 99.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu14 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu15 : 1.0%us, 0.7%sy, 0.0%ni, 98.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 132145404k total, 88125080k used, 44020324k free, 516476k buffers Swap: 8388600k total, 620232k used, 7768368k free, 55729064k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 25424 jonathan 20 0 4404m 4.1g 3268 R 99.7 3.3 212:58.17 python2.7 20939 sam 20 0 908m 733m 3376 R 81.2 0.6 603:08.07 python2.7 20987 sam 20 0 908m 732m 3376 R 79.8 0.6 598:49.18 python2.7 25428 jonathan 20 0 774m 164m 15m S 14.2 0.1 24:22.60 java 20996 sam 20 0 98.4m 7780 1880 S 4.3 0.0 17:48.15 vw 20941 sam 20 0 161m 70m 1880 S 3.0 0.1 18:10.03 vw 20940 sam 20 0 98.4m 8068 1880 S 2.6 0.0 18:06.28 vw 20942 sam 20 0 98.4m 8080 1880 S 2.6 0.0 17:39.45 vw 20944 sam 20 0 161m 71m 1880 S 2.6 0.1 17:29.29 vw 20947 sam 20 0 161m 71m 1880 S 2.6 0.1 17:25.58 vw 20959 sam 20 0 161m 70m 1880 S 2.6 0.1 17:28.00 vw 20962 sam 20 0 161m 70m 1880 S 2.6 0.1 17:26.96 vw 20963 sam 20 0 98.4m 8076 1880 S 2.6 0.0 18:07.19 vw 20965 sam 20 0 161m 71m 1880 S 2.6 0.1 18:08.13 vw 20995 sam 20 0 161m 71m 1880 S 2.6 0.1 17:38.67 vw 6399 root 20 0 558m 19m 5028 S 2.3 0.0 4329:56 BESClient 20945 sam 20 0 98.4m 8068 1880 S 2.3 0.0 17:35.38 vw 20948 sam 20 0 98.4m 8068 1880 S 2.3 0.0 17:26.01 vw 20950 sam 20 0 161m 70m 1880 S 2.3 0.1 17:25.79 vw 20952 sam 20 0 98.4m 8076 1880 S 2.3 0.0 17:32.94 vw 20955 sam 20 0 161m 70m 1880 S 2.3 0.1 17:26.61 vw 20956 sam 20 0 98.4m 8072 1880 S 2.3 0.0 17:34.76 vw 20960 sam 20 0 98.4m 8072 1880 S 2.3 0.0 17:34.04 vw Adding up CPU loads gives about 300%. The top process list also adds up to about 300%. Why is load average about 1?

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  • Have I pushed the limits of my current VPS or is there room for optimization?

    - by JRameau
    I am currently on a mediatemple DV server (basic) 512mb dedicated ram, this is a CentOS based VPS with Plesk and Virtuozzo. My experience with it from day 1 has been bad and I only could sooth my server issues with several caching "Band-aids," but my sites are not as small as they were a year ago either so the issues have worsen. I have 3 Drupal installs running on separate (plesk) domains, 1 of those drupal installs is a multisite, that consists of 5-6 sites 2 of those sites are bringing in actual traffic. Those caching "Band-aids" I mentioned are APC, which seemed to help alot initially, and Drupal's Boost, which is considered a poorman's Varnish, it makes all my pages static for anonymous users. Last 30day combined estimate on Google Ananlytics: 90k visitors 260k pageviews. Issue: alot of downtime, I am continually checking if my sites are up, and lately I have been finding it down more than 3 times daily. Restarting Apache will bring it back up, for some time. I have google search every error message and looked up ways to optimize my DV server, and I am beyond stump what is my next move. Is this server bad, have I hit a impossibly low restriction such as the 12mb kernel memory barrier (kmemsize), is it on my end, do I need to optimize some more? *I have provided as much information as I can below, any help or suggestions given will be appreciated Common Error messages I see in the log: [error] (12)Cannot allocate memory: fork: Unable to fork new process [error] make_obcallback: could not import mod_python.apache.\n Traceback (most recent call last): File "/usr/lib/python2.4/site-packages/mod_python/apache.py", line 21, in ? import traceback File "/usr/lib/python2.4/traceback.py", line 3, in ? import linecache ImportError: No module named linecache [error] python_handler: no interpreter callback found. [warn-phpd] mmap cache can't open /var/www/vhosts/***/httpdocs/*** - Too many open files in system (pid ***) [alert] Child 8125 returned a Fatal error... Apache is exiting! [emerg] (43)Identifier removed: couldn't grab the accept mutex [emerg] (22)Invalid argument: couldn't release the accept mutex cat /proc/user_beancounters: Version: 2.5 uid resource held maxheld barrier limit failcnt 41548: kmemsize 4582652 5306699 12288832 13517715 21105036 lockedpages 0 0 600 600 0 privvmpages 38151 42676 229036 249036 0 shmpages 16274 16274 17237 17237 2 dummy 0 0 0 0 0 numproc 43 46 300 300 0 physpages 27260 29528 0 2147483647 0 vmguarpages 0 0 131072 2147483647 0 oomguarpages 27270 29538 131072 2147483647 0 numtcpsock 21 29 300 300 0 numflock 8 8 480 528 0 numpty 1 1 30 30 0 numsiginfo 0 1 1024 1024 0 tcpsndbuf 648440 675272 2867477 4096277 1711499 tcprcvbuf 301620 359716 2867477 4096277 0 othersockbuf 4472 4472 1433738 2662538 0 dgramrcvbuf 0 0 1433738 1433738 0 numothersock 12 12 300 300 0 dcachesize 0 0 2684271 2764800 0 numfile 3447 3496 6300 6300 3872 dummy 0 0 0 0 0 dummy 0 0 0 0 0 dummy 0 0 0 0 0 numiptent 14 14 200 200 0 TOP: (In January the load avg was really high 3-10, I was able to bring it down where it is currently is by giving APC more memory play around with) top - 16:46:07 up 2:13, 1 user, load average: 0.34, 0.20, 0.20 Tasks: 40 total, 2 running, 37 sleeping, 0 stopped, 1 zombie Cpu(s): 0.3% us, 0.1% sy, 0.0% ni, 99.7% id, 0.0% wa, 0.0% hi, 0.0% si Mem: 916144k total, 156668k used, 759476k free, 0k buffers Swap: 0k total, 0k used, 0k free, 0k cached MySQLTuner: (after optimizing every table and repairing any table with overage I got the fragmented count down to 86) [--] Data in MyISAM tables: 285M (Tables: 1105) [!!] Total fragmented tables: 86 [--] Up for: 2h 44m 38s (409K q [41.421 qps], 6K conn, TX: 1B, RX: 174M) [--] Reads / Writes: 79% / 21% [--] Total buffers: 58.0M global + 2.7M per thread (100 max threads) [!!] Query cache prunes per day: 675307 [!!] Temporary tables created on disk: 35% (7K on disk / 20K total)

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  • Chrome does not re-draw properly on Windows 8

    - by Akshat Mittal
    There are a lot of problems with Chrome (24.0.1312.14 beta || But all this happened before update also) on Windows 8. Problems and explanations are listed below: Google Chrome re-draw time: When I switch tabs, the window retains the content of the previous tab and displays that even if I move my mouse, if only refreshes (re-draws) when there is a change on the webpage (like on hover) or I do a select all (or scroll). One thing to note is that the hover and select happens on the real page and not the retained image-like thing of the older webpage. Chrome is slow and laggy: Websites such as Facebook and Twitter (and more) have gone extremely laggy on Chrome (Win 8). When I was using Windows 7, I never experienced a lag or something. Also when using HTML-5 Websites, the transition (the -webkit-transition in CSS) goes extremely slow at times. Plugins Crash: Plugins like Flash Player, Shockwave Player, and more that are in-built into Chrome Crashes a lot, even when doing simple tasks like playing YouTube Videos, displaying ads or something. Chrome Crashes: Chrome has crashed over 100 times in the past month. Google Chrome just crashes randomly or I don't know the reason. Random Page crashes: Chrome results chrome://crash/(Copy-Paste this in address bar) on random pages even when the page is just loaded, I understand that this can happen on heavy HTML5 or JS websites but what about HTML only websites? Computer Freeze: Chrome sometimes, randomly, freezes my computer. Freeze in the sense, none of the other apps are also working. It's like the whole system freezes, I can not even switch to other apps. I am sure that this is because of Chrome since this happens only when Chrome is active. Most of the things above happens on Super User also, Super User never had any problem when using Chrome on Windows 7. UPDATE 1: @magicandre1981 Commented for trying to disable Hardware Acceleration. I tried it, it somewhat solved the problem but din't fix it. I am still experiencing all the above issues but less frequently (maybe because Chrome Restarted Completely) UPDATE 2: @avirk asked me to try a Stable Version of Chrome and Firefox, I din't experience any lag in Firefox, a little (negligible) lag in Chrome 22 (Maybe because its a new copy of Chrome, I haven't used it much). UPDATE 3: @NothingsImpossible said that He is also experiencing the same problem on Windows Server 2008! This seams to be a major issue now. He also said that GPU load is also high at the same time! Even I saw the same thing. UPDATE 4: Recently, Chrome updated to v24 Stable (I am using stable from a long time now). I was experiencing this problem a lot less in Chrome 23, but this is back in Chrome 24. Seams like Chrome 24 is the most affected from this bug, as this same problem was high in Chrome 24 beta also. UPDATE 5: Chrome was updated to v25 Stable. This problem is 99% Gone, it is still there in 1% of the cases. One such example is when I leave chrome inactive for a while with a few tabs open, the tabs go black and no activity can get them back to active state. If I open a new tab, the new tab is OK but the others are still black, I need to close all those tabs. UPDATE 6: Chrome updated to v27 Stable channel, this problem is nearly gone. This does happen occasionally, but not as frequent as in earlier versions of Chrome. UPDATE 7: I am on Chrome v35.0.1916.114 Stable, Windows 8.1 Pro Update 1. Some of the other problems appears to be back. Chrome is slow and laggy again. Re-draw time is getting worse. Is anybody else experiencing such issues? Does anybody have a solution to any of these?

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  • Where's the Swap File/Partition?

    - by chrisbunney
    I'm investigating the virtual memory configuration of a Debian based Amazon EC2 instance, and as my background isn't in system admin, I'm slightly confused by what I'm seeing. We're using MongoDB, and the monitoring server we have indicates that the Mongo process is using about 20GB of swap space, however I can't figure out where this is located on the server. As far as I can tell from using the various suggested methods from Google, there is either a much smaller amount, or none at all. top indicates that there is 1.8GB of swap memory: top - 15:35:21 up 6 days, 3:23, 1 user, load average: 1.60, 1.43, 1.37 Tasks: 47 total, 2 running, 45 sleeping, 0 stopped, 0 zombie Cpu(s): 0.0%us, 1.3%sy, 0.0%ni, 14.7%id, 83.8%wa, 0.0%hi, 0.0%si, 0.1%st Mem: 3928924k total, 2855572k used, 1073352k free, 640564k buffers Swap: 0k total, 0k used, 0k free, 1887788k cached swapon -s doesn't seem to think there's any swap space: Filename Type Size Used Priority free -m doesn't think there's any swap either: total used free shared buffers cached Mem: 3836 3663 172 0 626 2701 -/+ buffers/cache: 336 3500 Swap: 0 0 0 And neither does vmstat: procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu---- r b swpd free buff cache si so bi bo in cs us sy id wa 0 3 0 66224 641372 2874744 0 0 21 5012 21 33 2 2 76 19 But cat /etc/fstab thinks there is a swap partition: /dev/xvda1 / ext3 defaults 1 1 /dev/xvda2 /mnt ext3 defaults 0 0 /dev/xvda3 swap swap defaults 0 0 none /proc proc defaults 0 0 none /sys sysfs defaults 0 0 However df -k gives no indication of the xvda3 partition: Filesystem 1K-blocks Used Available Use% Mounted on /dev/xvda1 16513960 15675324 0 100% / tmpfs 1964460 8 1964452 1% /lib/init/rw udev 1914148 28 1914120 1% /dev tmpfs 1964460 4 1964456 1% /dev/shm So I really don't know what to make of this, because I appear to have a process using about 10 times more virtual memory than what might be available, and I have no idea where this virtual memory is on the system. I'm probably misinterpreting the output of the tools, so I'd be grateful if someone would be able to set me straight: What have I got wrong, what's the right interpretation, and how do you reach that interpretation? EDIT0: We use 10gen's MMS for monitoring the database, the relevant section for memory from the last data point is: "mem": { "virtual": 20749, "bits": 64, "supported": true, "mappedWithJournal": 20376, "mapped": 10188, "resident": 1219 }, This JSON is specific to the database process (I believe) rather than the system as a whole. fdisk -l /dev/xvda outputs... nothing? I tried each of the 3 xvda entries in /etc/fstab as well: root@ip:~# fdisk -l /dev/xvda1 Disk /dev/xvda1: 34.4 GB, 34359738368 bytes 255 heads, 63 sectors/track, 4177 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Disk /dev/xvda1 doesn't contain a valid partition table root@ip:~# fdisk -l /dev/xvda2 root@ip:~# fdisk -l /dev/xvda3 root@ip:~# Edit1: Output of cat /proc/meminfo for the sake of completeness: MemTotal: 3928924 kB MemFree: 726600 kB Buffers: 648368 kB Cached: 2216556 kB SwapCached: 0 kB Active: 1945100 kB Inactive: 994016 kB Active(anon): 60476 kB Inactive(anon): 12952 kB Active(file): 1884624 kB Inactive(file): 981064 kB Unevictable: 0 kB Mlocked: 0 kB SwapTotal: 0 kB SwapFree: 0 kB Dirty: 387180 kB Writeback: 0 kB AnonPages: 73380 kB Mapped: 1188260 kB Shmem: 48 kB Slab: 149768 kB SReclaimable: 146076 kB SUnreclaim: 3692 kB KernelStack: 1104 kB PageTables: 16096 kB NFS_Unstable: 0 kB Bounce: 0 kB WritebackTmp: 0 kB CommitLimit: 1964460 kB Committed_AS: 305572 kB VmallocTotal: 34359738367 kB VmallocUsed: 16760 kB VmallocChunk: 34359721448 kB HardwareCorrupted: 0 kB HugePages_Total: 0 HugePages_Free: 0 HugePages_Rsvd: 0 HugePages_Surp: 0 Hugepagesize: 2048 kB DirectMap4k: 3932160 kB DirectMap2M: 0 kB

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  • Tomcat dying silently on regular basis

    - by Hendrik
    My tomcat (6.0.32, Java Sun 1.6.0_22-b04 on Ubuntu 10.04) keeps crashing multiple times daily without any specific output in catalina.out. This usually happens on high load (see top output). Update: The pid-file is properly removed when this happens. Update 2: No CATALINA_OPTS set, _JAVA_OPTS are: export _JAVA_OPTIONS="-Xms128m -Xmx1024m -XX:MaxPermSize=512m \ -XX:MinHeapFreeRatio=20 \ -XX:MaxHeapFreeRatio=40 \ -XX:NewSize=10m \ -XX:MaxNewSize=10m \ -XX:SurvivorRatio=6 \ -XX:TargetSurvivorRatio=80 \ -XX:+CMSClassUnloadingEnabled \ -Djava.awt.headless=true \ -Dcom.sun.management.jmxremote \ -Dcom.sun.management.jmxremote.port=37331 \ -Dcom.sun.management.jmxremote.ssl=false \ -Dcom.sun.management.jmxremote.authenticate=true \ -Djava.rmi.server.hostname=(myhostname) \ -Dcom.sun.management.jmxremote.password.file=/etc/java-6-sun/management/jmxremote.password \ -Dcom.sun.management.jmxremote.access.file=/etc/java-6-sun/management/jmxremote.access" Top: top - 12:40:03 up 9 days, 12:15, 3 users, load average: 30.00, 22.39, 21.91 Tasks: 89 total, 4 running, 85 sleeping, 0 stopped, 0 zombie Cpu(s): 53.2%us, 9.7%sy, 0.0%ni, 34.7%id, 1.5%wa, 0.0%hi, 0.8%si, 0.0%st Mem: 4194304k total, 3311304k used, 883000k free, 0k buffers Swap: 4194304k total, 0k used, 4194304k free, 0k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 25850 tomcat6 20 0 1981m 1.2g 11m S 161 29.6 11:41.56 java 12632 mysql 20 0 393m 97m 4452 S 141 2.4 1690:05 mysqld 14932 nobody 20 0 253m 44m 9152 R 56 1.1 3:26.57 php-cgi 7011 nobody 20 0 241m 31m 9124 S 30 0.8 1:35.96 php-cgi 10093 nobody 20 0 228m 18m 8520 S 25 0.5 2:29.97 php-cgi 27071 nobody 20 0 237m 28m 8640 S 11 0.7 3:13.72 php-cgi 3306 nobody 20 0 227m 16m 6736 R 7 0.4 2:29.83 php-cgi 7756 nobody 20 0 261m 58m 15m R 5 1.4 2:22.33 php-cgi 7129 www-data 20 0 3646m 7228 1896 S 2 0.2 0:36.65 nginx 2657 nobody 20 0 228m 18m 8540 S 1 0.5 1:59.51 php-cgi 7131 www-data 20 0 3645m 6464 1960 S 1 0.2 0:34.13 nginx 7140 www-data 20 0 3652m 12m 1896 S 1 0.3 0:35.80 nginx 619 nobody 20 0 231m 29m 15m S 0 0.7 2:33.46 php-cgi 16552 nobody 20 0 250m 41m 8784 S 0 1.0 2:48.12 php-cgi 17134 nobody 20 0 239m 37m 16m S 0 0.9 2:32.86 php-cgi 21004 nobody 20 0 243m 34m 8700 S 0 0.8 1:19.85 php-cgi 26105 root 20 0 19220 1392 1060 R 0 0.0 0:00.82 top 32430 nobody 20 0 256m 47m 9196 S 0 1.2 2:19.01 php-cgi 314 nobody 20 0 256m 47m 8804 S 0 1.1 1:46.00 php-cgi 2111 nobody 20 0 253m 44m 9196 S 0 1.1 3:01.14 php-cgi 2142 root 20 0 26452 2564 868 S 0 0.1 0:00.56 screen 2144 root 20 0 19484 2012 1368 S 0 0.0 0:00.00 bash 2333 nobody 20 0 249m 41m 9160 S 0 1.0 1:10.33 php-cgi 2552 root 20 0 19484 2260 1620 S 0 0.1 0:00.01 bash 2587 nobody 20 0 258m 49m 9192 S 0 1.2 2:04.50 php-cgi 2684 root 20 0 4092 652 540 S 0 0.0 0:00.00 xvfb-run 2696 root 20 0 60720 13m 2352 S 0 0.3 0:09.12 Xvfb 2759 root 20 0 617m 12m 4676 S 0 0.3 0:00.66 node 3514 nobody 20 0 270m 61m 9216 S 0 1.5 3:13.69 php-cgi 5270 root 20 0 25164 1324 1036 S 0 0.0 0:00.01 screen 5402 nobody 20 0 227m 16m 8032 S 0 0.4 1:33.61 php-cgi 5765 root 20 0 81180 3820 3028 S 0 0.1 0:00.31 sshd 5798 nobody 20 0 242m 32m 9124 S 0 0.8 1:52.08 php-cgi 5856 root 20 0 19496 2292 1636 S 0 0.1 0:00.03 bash 6442 root 20 0 62332 20m 1960 S 0 0.5 0:30.58 mrtg 7082 root 20 0 88992 1916 1636 S 0 0.0 0:00.00 PassengerWatchd I can't find any concrete reason for it, no Exceptions or messages of a shutdown in catalina.out (and no other logs in tomcat's log dir). I can start up the service and it will run for a few days or just minutes before dying again. Is there somewhere else i could look for output? Could the kernel start killing threads due to a lack of ressources and by that bring the VM down?

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  • Using Upstart to manage Unicorn w/ rbenv + bundler binstubs w/ ruby-local-exec shebang

    - by codykrieger
    Alright, this is melting my brain. It might have something to do with the fact that I don't understand Upstart as well as I should. Sorry in advance for the long question. I'm trying to use Upstart to manage a Rails app's Unicorn master process. Here is my current /etc/init/app.conf: description "app" start on runlevel [2] stop on runlevel [016] console owner # expect daemon script APP_ROOT=/home/deploy/app PATH=/home/deploy/.rbenv/shims:/home/deploy/.rbenv/bin:$PATH $APP_ROOT/bin/unicorn -c $APP_ROOT/config/unicorn.rb -E production # >> /tmp/upstart.log 2>&1 end script # respawn That works just fine - the Unicorns start up great. What's not great is that the PID detected is not of the Unicorn master, it's of an sh process. That in and of itself isn't so bad, either - if I wasn't using the automagical Unicorn zero-downtime deployment strategy. Because shortly after I send -USR2 to my Unicorn master, a new master spawns up, and the old one dies...and so does the sh process. So Upstart thinks my job has died, and I can no longer restart it with restart or stop it with stop if I want. I've played around with the config file, trying to add -D to the Unicorn line (like this: $APP_ROOT/bin/unicorn -c $APP_ROOT/config/unicorn.rb -E production -D) to daemonize Unicorn, and I added the expect daemon line, but that didn't work either. I've tried expect fork as well. Various combinations of all of those things can cause start and stop to hang, and then Upstart gets really confused about the state of the job. Then I have to restart the machine to fix it. I think Upstart is having problems detecting when/if Unicorn is forking because I'm using rbenv + the ruby-local-exec shebang in my $APP_ROOT/bin/unicorn script. Here it is: #!/usr/bin/env ruby-local-exec # # This file was generated by Bundler. # # The application 'unicorn' is installed as part of a gem, and # this file is here to facilitate running it. # require 'pathname' ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile", Pathname.new(__FILE__).realpath) require 'rubygems' require 'bundler/setup' load Gem.bin_path('unicorn', 'unicorn') Additionally, the ruby-local-exec script looks like this: #!/usr/bin/env bash # # `ruby-local-exec` is a drop-in replacement for the standard Ruby # shebang line: # # #!/usr/bin/env ruby-local-exec # # Use it for scripts inside a project with an `.rbenv-version` # file. When you run the scripts, they'll use the project-specified # Ruby version, regardless of what directory they're run from. Useful # for e.g. running project tasks in cron scripts without needing to # `cd` into the project first. set -e export RBENV_DIR="${1%/*}" exec ruby "$@" So there's an exec in there that I'm worried about. It fires up a Ruby process, which fires up Unicorn, which may or may not daemonize itself, which all happens from an sh process in the first place...which makes me seriously doubt the ability of Upstart to track all of this nonsense. Is what I'm trying to do even possible? From what I understand, the expect stanza in Upstart can only be told (via daemon or fork) to expect a maximum of two forks.

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  • Secure method of changing a user's password via Python script/non-interactively

    - by Matthew Rankin
    I've created a Python script using Fabric to configure a freshly built Slicehost Ubuntu slice. In case you're not familiar with Fabric, it uses Paramiko, a Python SSH2 client, to provide remote access "for application deployment or systems administration tasks." One of the first things I have the Fabric script do is to create a new admin user and set their password. Unlike Pexpect, Fabric cannot handle interactive commands on the remote system, so I need to set the user's password non-interactively. At present, I'm using the chpasswd command to change the password. This transmits the password as clear text over SSH to the remote system. Questions Is my current method of setting the password a security concern? Currently, the drawback I see is that Fabric shows the password as clear text on my local system as follows: [xxx.xx.xx.xxx] run: echo "johnsmith:supersecretpassw0rd" | chpasswd. Since I only run the Fabric script from my laptop, I don't think this is a security issue, but I'm interested in others' input. Is there a better method for setting the user's password non-interactively? Another option, would be to use Pexpect from within the Fabric script to set the password. Current Code # Fabric imports and host configuration excluded for brevity root_password = getpass.getpass("Root's password given by SliceManager: ") admin_username = prompt("Enter a username for the admin user to create: ") admin_password = getpass.getpass("Enter a password for the admin user: ") env.user = 'root' env.password = root_password # Create the admin group and add it to the sudoers file admin_group = 'admin' run('addgroup {group}'.format(group=admin_group)) run('echo "%{group} ALL=(ALL) ALL" >> /etc/sudoers'.format( group=admin_group) ) # Create the new admin user (default group=username); add to admin group run('adduser {username} --disabled-password --gecos ""'.format( username=admin_username) ) run('adduser {username} {group}'.format( username=admin_username, group=admin_group) ) # Set the password for the new admin user run('echo "{username}:{password}" | chpasswd'.format( username=admin_username, password=admin_password) ) Local System Terminal I/O $ fab config_rebuilt_slice Root's password given by SliceManager: Enter a username for the admin user to create: johnsmith Enter a password for the admin user: [xxx.xx.xx.xxx] run: addgroup admin [xxx.xx.xx.xxx] out: Adding group `admin' (GID 1000) ... [xxx.xx.xx.xxx] out: Done. [xxx.xx.xx.xxx] run: echo "%admin ALL=(ALL) ALL" >> /etc/sudoers [xxx.xx.xx.xxx] run: adduser johnsmith --disabled-password --gecos "" [xxx.xx.xx.xxx] out: Adding user `johnsmith' ... [xxx.xx.xx.xxx] out: Adding new group `johnsmith' (1001) ... [xxx.xx.xx.xxx] out: Adding new user `johnsmith' (1000) with group `johnsmith' ... [xxx.xx.xx.xxx] out: Creating home directory `/home/johnsmith' ... [xxx.xx.xx.xxx] out: Copying files from `/etc/skel' ... [xxx.xx.xx.xxx] run: adduser johnsmith admin [xxx.xx.xx.xxx] out: Adding user `johnsmith' to group `admin' ... [xxx.xx.xx.xxx] out: Adding user johnsmith to group admin [xxx.xx.xx.xxx] out: Done. [xxx.xx.xx.xxx] run: echo "johnsmith:supersecretpassw0rd" | chpasswd [xxx.xx.xx.xxx] run: passwd --lock root [xxx.xx.xx.xxx] out: passwd: password expiry information changed. Done. Disconnecting from [email protected]... done.

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  • Troubleshooting High Load on Plesk LAMP Dedicated Server

    - by Callmeed
    I have 2 nearly identical dedicated servers with the same provider. They also run a nearly identical software stack: RedHat 5 64-bit, Plesk, PHP, Apache, & MySQL. We use them for hosting custom sites we build. The problem is, while our 1st server has a load average (in top) of around 0.3, the 2nd server consistently has a load average of around 4.0 or higher. Basic functions in Plesk are delayed and there is a bit of latency when executing shell commands. Anyone have ideas why it would be so high? And why it would differ from our other server so much? Here is my current top output (sorted by %MEM) ... Any help is much appreciated ... top - 21:48:04 up 100 days, 4:28, 1 user, load average: 3.74, 4.20, 4.23 Tasks: 336 total, 1 running, 335 sleeping, 0 stopped, 0 zombie Cpu(s): 0.8%us, 0.4%sy, 0.0%ni, 91.3%id, 7.5%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 12290884k total, 11886452k used, 404432k free, 2920212k buffers Swap: 2096472k total, 244k used, 2096228k free, 6560692k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 22536 apache 15 0 860m 547m 6484 S 0.0 4.6 0:10.96 httpd 26467 apache 15 0 859m 546m 6408 S 0.0 4.5 0:07.67 httpd 3620 apache 15 0 859m 545m 5552 S 0.0 4.5 0:06.15 httpd 1895 apache 15 0 858m 544m 6356 S 0.0 4.5 0:08.25 httpd 16933 apache 15 0 858m 544m 5488 S 0.0 4.5 0:01.57 httpd 6431 apache 15 0 856m 542m 6076 S 10.6 4.5 0:05.32 httpd 14417 apache 15 0 856m 542m 5568 S 0.0 4.5 0:03.88 httpd 15403 apache 15 0 855m 541m 5616 S 0.0 4.5 0:03.73 httpd 19165 apache 15 0 853m 539m 6252 S 0.0 4.5 0:12.40 httpd 15898 apache 15 0 852m 539m 5376 S 0.0 4.5 0:02.68 httpd 14401 apache 15 0 851m 538m 5460 S 0.0 4.5 0:02.97 httpd 15393 apache 15 0 851m 538m 5404 S 0.0 4.5 0:03.12 httpd 15427 apache 15 0 851m 538m 5496 S 0.0 4.5 0:02.44 httpd 14412 apache 15 0 851m 538m 5324 S 0.0 4.5 0:02.15 httpd 18330 apache 15 0 851m 537m 5136 S 0.0 4.5 0:01.30 httpd 18303 apache 15 0 848m 535m 5140 S 0.0 4.5 0:00.47 httpd 21190 apache 15 0 845m 533m 3988 S 0.0 4.4 0:00.33 httpd 15923 root 18 0 822m 521m 9928 S 0.0 4.3 10:04.81 httpd 22021 apache 15 0 828m 520m 4964 S 0.0 4.3 0:00.16 httpd 22146 apache 15 0 823m 515m 3016 S 0.0 4.3 0:00.02 httpd 22345 apache 15 0 822m 514m 2408 S 0.0 4.3 0:00.00 httpd 14721 apache 15 0 733m 510m 488 S 0.0 4.3 0:00.00 httpd 5094 root 15 0 1452m 122m 15m S 1.0 1.0 852:24.24 java 4636 mysql 15 0 532m 57m 6440 S 1.0 0.5 488:05.84 mysqld 4799 popuser 15 0 166m 53m 2368 S 0.0 0.4 0:36.64 spamd 16761 popuser 15 0 159m 46m 2312 S 0.0 0.4 0:00.38 spamd 4797 root 15 0 158m 45m 2448 S 0.0 0.4 0:01.27 spamd 5074 root 34 19 255m 20m 2144 S 0.0 0.2 1:37.53 yum-updatesd 9917 named 15 0 366m 9804 1980 S 0.0 0.1 0:10.26 named 4332 sso 18 0 119m 8028 5212 S 0.0 0.1 0:00.06 sw-engine-cgi 4341 sso 18 0 119m 8028 5212 S 0.0 0.1 0:00.07 sw-engine-cgi 4350 sso 18 0 119m 8028 5212 S 0.0 0.1 0:00.09 sw-engine-cgi 4352 sso 18 0 119m 8028 5212 S 0.0 0.1 0:00.11 sw-engine-cgi 4376 ntp 15 0 23388 5020 3896 S 0.0 0.0 0:00.58 ntpd 4331 sw-cp-se 15 0 61336 4572 1480 S 0.0 0.0 5:53.22 sw-cp-serverd 4213 haldaemo 15 0 31252 4460 1684 S 0.0 0.0 0:01.52 hald 4778 postgres 18 0 117m 4164 3484 S 0.0 0.0 0:00.11 postmaster 18555 root 16 0 98.3m 3716 2852 S 0.0 0.0 0:00.01 sshd 4488 sso 18 0 119m 3044 224 S 0.0 0.0 0:00.00 sw-engine-cgi 4489 sso 18 0 119m 3044 224 S 0.0 0.0 0:00.00 sw-engine-cgi 4492 sso 18 0 119m 3044 224 S 0.0 0.0 0:00.00 sw-engine-cgi 4493 sso 18 0 119m 3044 224 S 0.0 0.0 0:00.00 sw-engine-cgi 4490 sso 18 0 119m 3040 220 S 0.0 0.0 0:00.00 sw-engine-cgi

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  • Performance Tuning a High-Load Apache Server

    - by futureal
    I am looking to understand some server performance problems I am seeing with a (for us) heavily loaded web server. The environment is as follows: Debian Lenny (all stable packages + patched to security updates) Apache 2.2.9 PHP 5.2.6 Amazon EC2 large instance The behavior we're seeing is that the web typically feels responsive, but with a slight delay to begin handling a request -- sometimes a fraction of a second, sometimes 2-3 seconds in our peak usage times. The actual load on the server is being reported as very high -- often 10.xx or 20.xx as reported by top. Further, running other things on the server during these times (even vi) is very slow, so the load is definitely up there. Oddly enough Apache remains very responsive, other than that initial delay. We have Apache configured as follows, using prefork: StartServers 5 MinSpareServers 5 MaxSpareServers 10 MaxClients 150 MaxRequestsPerChild 0 And KeepAlive as: KeepAlive On MaxKeepAliveRequests 100 KeepAliveTimeout 5 Looking at the server-status page, even at these times of heavy load we are rarely hitting the client cap, usually serving between 80-100 requests and many of those in the keepalive state. That tells me to rule out the initial request slowness as "waiting for a handler" but I may be wrong. Amazon's CloudWatch monitoring tells me that even when our OS is reporting a load of 15, our instance CPU utilization is between 75-80%. Example output from top: top - 15:47:06 up 31 days, 1:38, 8 users, load average: 11.46, 7.10, 6.56 Tasks: 221 total, 28 running, 193 sleeping, 0 stopped, 0 zombie Cpu(s): 66.9%us, 22.1%sy, 0.0%ni, 2.6%id, 3.1%wa, 0.0%hi, 0.7%si, 4.5%st Mem: 7871900k total, 7850624k used, 21276k free, 68728k buffers Swap: 0k total, 0k used, 0k free, 3750664k cached The majority of the processes look like: 24720 www-data 15 0 202m 26m 4412 S 9 0.3 0:02.97 apache2 24530 www-data 15 0 212m 35m 4544 S 7 0.5 0:03.05 apache2 24846 www-data 15 0 209m 33m 4420 S 7 0.4 0:01.03 apache2 24083 www-data 15 0 211m 35m 4484 S 7 0.5 0:07.14 apache2 24615 www-data 15 0 212m 35m 4404 S 7 0.5 0:02.89 apache2 Example output from vmstat at the same time as the above: procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu---- r b swpd free buff cache si so bi bo in cs us sy id wa 8 0 0 215084 68908 3774864 0 0 154 228 5 7 32 12 42 9 6 21 0 198948 68936 3775740 0 0 676 2363 4022 1047 56 16 9 15 23 0 0 169460 68936 3776356 0 0 432 1372 3762 835 76 21 0 0 23 1 0 140412 68936 3776648 0 0 280 0 3157 827 70 25 0 0 20 1 0 115892 68936 3776792 0 0 188 8 2802 532 68 24 0 0 6 1 0 133368 68936 3777780 0 0 752 71 3501 878 67 29 0 1 0 1 0 146656 68944 3778064 0 0 308 2052 3312 850 38 17 19 24 2 0 0 202104 68952 3778140 0 0 28 90 2617 700 44 13 33 5 9 0 0 188960 68956 3778200 0 0 8 0 2226 475 59 17 6 2 3 0 0 166364 68956 3778252 0 0 0 21 2288 386 65 19 1 0 And finally, output from Apache's server-status: Server uptime: 31 days 2 hours 18 minutes 31 seconds Total accesses: 60102946 - Total Traffic: 974.5 GB CPU Usage: u209.62 s75.19 cu0 cs0 - .0106% CPU load 22.4 requests/sec - 380.3 kB/second - 17.0 kB/request 107 requests currently being processed, 6 idle workers C.KKKW..KWWKKWKW.KKKCKK..KKK.KKKK.KK._WK.K.K.KKKKK.K.R.KK..C.C.K K.C.K..WK_K..KKW_CK.WK..W.KKKWKCKCKW.W_KKKKK.KKWKKKW._KKK.CKK... KK_KWKKKWKCKCWKK.KKKCK.......................................... ................................................................ From my limited experience I draw the following conclusions/questions: We may be allowing far too many KeepAlive requests I do see some time spent waiting for IO in the vmstat although not consistently and not a lot (I think?) so I am not sure this is a big concern or not, I am less experienced with vmstat Also in vmstat, I see in some iterations a number of processes waiting to be served, which is what I am attributing the initial page load delay on our web server to, possibly erroneously We serve a mixture of static content (75% or higher) and script content, and the script content is often fairly processor intensive, so finding the right balance between the two is important; long term we want to move statics elsewhere to optimize both servers but our software is not ready for that today I am happy to provide additional information if anybody has any ideas, the other note is that this is a high-availability production installation so I am wary of making tweak after tweak, and is why I haven't played with things like the KeepAlive value myself yet.

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  • How to understand the memory usage and load average in linux server

    - by Tim
    Hi, I am using a linux server which has 128GB of memory and 24 cores. I use top to see how much it is used. Its output is pasted at the end of the post. Here are two questions: (1) I see that each of the running processes occupies a very small percentage of memory (%MEM no more than 0.2%, and most just 0.0%), but how the total memory is almost used as in the fourth line of output ("Mem: 130766620k total, 130161072k used, 605548k free, 919300k buffers")? The sum of used percentage of memory over all processes seems unlikely to achieve almost 100%, doesn't it? (2) how to understand the load average on the first line ("load average: 14.04, 14.02, 14.00")? Thanks and regards! Edit: Thanks! I also really like to hear some rough numbers based on used percentage of memory to determine if a server is heavily loaded, since I once became the one who cramed the server without understanding the current load. Is swap regarded as almost the same as memory? For example, when memory and swap are almost of same size, if the memory is almost running out but the swap is still largely free, may I just view it as if the used percentage of memory + swap is still not high and run other new processes? How would you consider together CPU or memory (or memory + swap) usage? Do you become worried if either of them reaches too high or both? Output of top: $ top top - 12:45:33 up 19 days, 23:11, 18 users, load average: 14.04, 14.02, 14.00 Tasks: 484 total, 12 running, 472 sleeping, 0 stopped, 0 zombie Cpu(s): 36.7%us, 19.7%sy, 0.0%ni, 43.6%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 130766620k total, 130161072k used, 605548k free, 919300k buffers Swap: 63111312k total, 500556k used, 62610756k free, 124437752k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 6529 sanchez 18 -2 1075m 219m 13m S 100 0.2 13760:23 MATLAB 13210 timothy 18 -2 48336 37m 1216 R 100 0.0 3:56.75 absurdity 13888 timothy 18 -2 48336 37m 1204 R 100 0.0 2:04.89 absurdity 14542 timothy 18 -2 48336 37m 1196 R 100 0.0 1:08.34 absurdity 14544 timothy 18 -2 2888 2076 400 R 100 0.0 1:06.14 gatherData 6183 sanchez 18 -2 1133m 195m 13m S 100 0.2 13676:04 MATLAB 6795 sanchez 18 -2 1079m 210m 13m S 100 0.2 13734:26 MATLAB 10178 timothy 18 -2 48336 37m 1204 R 100 0.0 11:33.93 absurdity 12438 timothy 18 -2 48336 37m 1216 R 100 0.0 5:38.17 absurdity 13661 timothy 18 -2 48336 37m 1216 R 100 0.0 2:44.13 absurdity 14098 timothy 18 -2 48336 37m 1204 R 100 0.0 1:58.31 absurdity 14335 timothy 18 -2 48336 37m 1196 R 100 0.0 1:08.93 absurdity 14765 timothy 18 -2 48336 37m 1196 R 99 0.0 0:32.57 absurdity 13445 timothy 18 -2 48336 37m 1216 R 99 0.0 3:01.37 absurdity 28990 root 20 0 0 0 0 S 2 0.0 65:50.21 pdflush 12141 tim 18 -2 19380 1660 1024 R 1 0.0 0:04.04 top 1240 root 15 -5 0 0 0 S 0 0.0 16:07.11 kjournald 9019 root 20 0 296m 4460 2616 S 0 0.0 82:19.51 kdm_greet 1 root 20 0 4028 728 592 S 0 0.0 0:03.11 init 2 root 15 -5 0 0 0 S 0 0.0 0:00.00 kthreadd 3 root RT -5 0 0 0 S 0 0.0 0:01.01 migration/0 4 root 15 -5 0 0 0 S 0 0.0 0:08.13 ksoftirqd/0 5 root RT -5 0 0 0 S 0 0.0 0:00.00 watchdog/0 6 root RT -5 0 0 0 S 0 0.0 17:27.31 migration/1 7 root 15 -5 0 0 0 S 0 0.0 0:01.21 ksoftirqd/1 8 root RT -5 0 0 0 S 0 0.0 0:00.00 watchdog/1 9 root RT -5 0 0 0 S 0 0.0 10:02.56 migration/2 10 root 15 -5 0 0 0 S 0 0.0 0:00.34 ksoftirqd/2 11 root RT -5 0 0 0 S 0 0.0 0:00.00 watchdog/2 12 root RT -5 0 0 0 S 0 0.0 4:29.53 migration/3 13 root 15 -5 0 0 0 S 0 0.0 0:00.34 ksoftirqd/3

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  • IIS 7.5 Manager crashes when adding a custom error page

    - by dig412
    I'm running a local IIS 7.5 server in Win 7 Pro, and I'm trying to add a custom error page for 403 responses. When I click OK to add a custom error page for my site, IIS Manager just vanishes. The server is still running, and I can re-start IIS Manager, but the new page has not been saved. I've also tried adding it directly to web.config, but that just gives me The page cannot be displayed because an internal server error has occurred. Does anyone know why this might be happening? Edit: The event log implies that an invalid character in the path caused the crash, but It occured even when I copied & pasted a path from a valid entry. Application error log: IISMANAGER_CRASH IIS Manager terminated unexpectedly. Exception:System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. --- System.ArgumentException: Illegal characters in path. at System.IO.Path.CheckInvalidPathChars(String path) at System.IO.Path.IsPathRooted(String path) at Microsoft.Web.Management.Iis.CustomErrors.CustomErrorsForm.OnAccept() at Microsoft.Web.Management.Client.Win32.TaskForm.OnOKButtonClick(Object sender, EventArgs e) at System.Windows.Forms.Control.OnClick(EventArgs e) at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent) at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ButtonBase.WndProc(Message& m) at System.Windows.Forms.Button.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg) at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData) at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context) at System.Windows.Forms.Form.ShowDialog(IWin32Window owner) at Microsoft.Web.Management.Host.UserInterface.ManagementUIService.ShowDialogInternal(Form form, IWin32Window parent) at Microsoft.Web.Management.Host.UserInterface.ManagementUIService.Microsoft.Web.Management.Client.Win32.IManagementUIService.ShowDialog(DialogForm form) at Microsoft.Web.Management.Client.Win32.ModulePage.ShowDialog(DialogForm form) at Microsoft.Web.Management.Iis.CustomErrors.CustomErrorsPage.AddCustomError() --- End of inner exception stack trace --- at System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner) at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks) at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) at Microsoft.Web.Management.Client.TaskList.InvokeMethod(String methodName, Object userData) at Microsoft.Web.Management.Host.UserInterface.Tasks.MethodTaskItemLine.InvokeMethod() at System.Windows.Forms.LinkLabel.OnMouseUp(MouseEventArgs e) at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.Label.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg) at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData) at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context) at Microsoft.Web.Management.Host.Shell.ShellApplication.Execute(Boolean localDevelopmentMode, Boolean resetPreferences, Boolean resetPreferencesNoLaunch) Process:InetMgr

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  • How can I work around problems with certificate configuration in Remote Desktop Services?

    - by Michael Steele
    I am setting up a Remote Desktop Services farm, and am having trouble configuring certificates for it to use. A demonstration of the problem I'm seeing can be found in Step #4. At this point I am convinced that there are problems with the user interface, and am looking for ways around them. Is there any way to configure certificates in Remote Desktop Services so that the settings hold and are reflected in the GUI? If not, is there any way for me to verify that the settings are correct? Step #1 - Create certificate to be used. I've configured a certificate to use with RD Web Access. The certificate is stored with in the Certificates MMC on my RD Connection Broker, and I am configuring the farm from that computer. I found by letting RD Web Access generate its own certificate that the following properties are required: Enhanced Key Usage Server Authentication Client Authentication This may not be required, but the self-signed certificate includes it. Key Usage Digital Signature Key Agreement Subject Alternative Name DNS Name=domain.com Detour about self-signed certificate generation As a quick detour, I was able to work around a problem with creating self-signed certificates using powershell. The documentation for the New-RDCertificate cmdlet gives the following example: PS C:\> $password = ConvertTo-SecureString -string "password" -asplaintext -force New-RDCertificate -Role RDWebAccess -DnsName "test-rdwa.contoso.com" -Password $password -ConnectionBroker rdcb.contoso.com -ExportPath "c:\test-rdwa.pfx" Typing this into the shell will result in an error message claiming that a function, Get-Server cannot be found. Prior to using New-RDCertificate, you must import the RemoteDesktop Module with Import-Module RemoteDesktop. Step #2 - Observe out-of-box behavior The first time you visit the Deployment Properties dialog box by navigating to Server Manager - Remote Desktop Services - Collections and selecting "Edit Deployment Properties" from the "TASKS" dropdown list in the "COLLECTIONS" grouping, you will see the following screen: This window is misleading because the level field is listed as "Not Configured". If I understand correctly all three of the role services are using a self-signed certificate. For the RD Web Access role this can be verified by visiting the website: The certificate being used also appears in the Certificates MMC: Step #3 - Assign new certificate The Deployment Properties dialog box will allow me to select my existing certificate. The certificate must be placed within the local computers Certificates MMC in the "Personal" certificate store. The private key will need to be exportable, and you will need to provide the password. I temporarily exported my certificate to a file named temp.pfx with a password, and then imported it into Remote Desktop Services from there. Once this is done the GUI will indicate that it is ready to accept the new configuration. Once I click the "Apply" button, the GUI indicates success. This can be verified by visiting the RD Web Access web site a second time. There is no certificate error. Step #4 - The GUI fails to maintain its state If the GUI is closed and reopened, all of these settings appear to be lost. Actually, the certificate I configured is still being used. I am able to continue accessing the RD Web Access site without any certificate errors. Oddly, if I use the "Create new certificate..." button to generate a self-signed certificate this window will update to an "Untrusted" level. This setting will then be maintained through the opening and closing of the Deployment Properties dialog box. Is there anything I can do to have my settings appear to stick? I feel like something is wrong when the GUI claims I haven't fully configured certificates.

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  • Why would VMWare to go defunct? How to recover from/prevent it?

    - by Josh
    I am running VMWare Server 2.0.2 (Build 203138) on a dual core Intel i5 with Ubuntu Server 10.04 LTS system (kernel 2.6.32-22-server #33-Ubuntu SMP). Disk Subsystem is a software RAID5 array. The system has been set up for a little over a week. For the past 5 days I have been running at leat 3 VMs (Linux and a variety of Windows OSes) with no issues whatsoever. But while I was installing Linux onto a new VM, suddenly all VMs became unresponsive, including the one I was installing to. I could not log in to the VMWare Management Interface, and the system was somewhat unresponsive via SSH. When I looked at top, I saw: top - 16:14:51 up 6 days, 1:49, 8 users, load average: 24.29, 24.33 17.54 Tasks: 203 total, 7 running, 195 sleeping, 0 stopped, 1 zombie Cpu(s): 0.2%us, 25.6%sy, 0.0%ni, 74.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 8056656k total, 5927580k used, 2129076k free, 20320k buffers Swap: 7811064k total, 240216k used, 7570848k free, 5045884k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 21549 root 39 19 0 0 0 Z 100 0.0 15:02.44 [vmware-vmx] <defunct> 2115 root 20 0 0 0 0 S 1 0.0 170:32.08 [vmware-rtc] 2231 root 21 1 1494m 126m 100m S 1 1.6 892:58.05 /usr/lib/vmware/bin/vmware-vmx -# product=2; 2280 jnet 20 0 19320 1164 800 R 0 0.0 30:04.55 top 12236 root 20 0 833m 41m 34m S 0 0.5 88:34.24 /usr/lib/vmware/bin/vmware-vmx -# product=2; 1 root 20 0 23704 1476 920 S 0 0.0 0:00.80 /sbin/init 2 root 20 0 0 0 0 S 0 0.0 0:00.01 [kthreadd] 3 root RT 0 0 0 0 S 0 0.0 0:00.00 [migration/0] 4 root 20 0 0 0 0 S 0 0.0 0:00.84 [ksoftirqd/0] 5 root RT 0 0 0 0 S 0 0.0 0:00.00 [watchdog/0] 6 root RT 0 0 0 0 S 0 0.0 0:00.00 [migration/1] The VMWare process for the virtual machine I was installing into became a zombie. Yet, it was still consuming 100% of the CPU time on one of the cores, and I couldn't reach it or any other virtual machines. (I was logged in to one virtual machine over SSH, another via X11, and a third via VNC. All three connections died). When I ran ps -ef and similar commands, I found that the defunct vmware-vmx process had it's parent PID set to init (1). I also used lsof -p 21549 and found that the defunct process had no open files. Yet it was using 100% of CPU time... I was unable to kill any vmware-vmx processes, including the defunct one, even with kill -9. As a last resort to resolve the situation I tried to reboot the box, however shutdown, halt, reboot, and init 6 all failed to reboot/shutdown, even when given appropriate --force settings. ControlAltDel produced a message about rebooting on the console, but the system would not reboot. I had to hard power-cycle the box to resolve the situation. (See my other question, Should I worry about the integrity of my linux software RAID5 after a crash or kernel panic?) What would cause a scenario like this? What else could I have done to resolve it besides a hard reboot? What can I do to prevent such a situation in the future?

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  • Load average is have been high over some period

    - by user111196
    We have a dedicated MySQL server and below is the a snapshot of the top. The load average has been staying at nearly 100 for an hour plus ready. top - 20:54:28 up 7:31, 2 users, load average: 83.08, 96.88, 106.23 Tasks: 278 total, 2 running, 274 sleeping, 2 stopped, 0 zombie Cpu0 : 18.8%us, 10.2%sy, 0.0%ni, 70.9%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu1 : 51.2%us, 4.3%sy, 0.0%ni, 44.2%id, 0.0%wa, 0.0%hi, 0.3%si, 0.0%st Cpu2 : 9.0%us, 10.3%sy, 0.0%ni, 80.6%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu3 : 18.8%us, 7.4%sy, 0.0%ni, 73.8%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu4 : 7.8%us, 8.8%sy, 0.0%ni, 83.4%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu5 : 10.3%us, 8.4%sy, 0.0%ni, 81.4%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu6 : 6.2%us, 7.5%sy, 0.0%ni, 86.2%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu7 : 6.2%us, 6.2%sy, 0.0%ni, 87.3%id, 0.0%wa, 0.0%hi, 0.3%si, 0.0%st Cpu8 : 8.8%us, 10.4%sy, 0.0%ni, 80.5%id, 0.0%wa, 0.0%hi, 0.3%si, 0.0%st Cpu9 : 63.7%us, 4.6%sy, 0.0%ni, 12.2%id, 0.0%wa, 4.3%hi, 15.2%si, 0.0%st Cpu10 : 9.2%us, 10.2%sy, 0.0%ni, 80.6%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu11 : 17.3%us, 5.9%sy, 0.0%ni, 76.8%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu12 : 8.0%us, 8.7%sy, 0.0%ni, 83.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu13 : 10.9%us, 7.4%sy, 0.0%ni, 81.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu14 : 6.2%us, 6.9%sy, 0.0%ni, 86.9%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu15 : 4.8%us, 6.1%sy, 0.0%ni, 89.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 33009800k total, 23174396k used, 9835404k free, 120604k buffers Swap: 35061752k total, 0k used, 35061752k free, 16459540k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 3341 mysql 20 0 14.3g 4.6g 4240 S 417.8 14.5 1673:51 mysqld 24406 root 20 0 15008 1292 876 R 0.3 0.0 0:00.19 top 1 root 20 0 4080 852 608 S 0.0 0.0 0:01.92 init 2 root 15 -5 0 0 0 S 0.0 0.0 0:00.00 kthreadd 3 root RT -5 0 0 0 S 0.0 0.0 0:00.32 migration/0 4 root 15 -5 0 0 0 S 0.0 0.0 0:00.29 ksoftirqd/0 5 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/0 6 root RT -5 0 0 0 S 0.0 0.0 0:03.21 migration/1 7 root 15 -5 0 0 0 S 0.0 0.0 0:00.07 ksoftirqd/1 8 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/1 9 root RT -5 0 0 0 S 0.0 0.0 0:00.17 migration/2 10 root 15 -5 0 0 0 S 0.0 0.0 0:00.03 ksoftirqd/2 11 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/2 12 root RT -5 0 0 0 S 0.0 0.0 0:00.32 migration/3 13 root 15 -5 0 0 0 S 0.0 0.0 0:00.02 ksoftirqd/3 14 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/3 15 root RT -5 0 0 0 S 0.0 0.0 0:00.10 migration/4 16 root 15 -5 0 0 0 S 0.0 0.0 0:00.04 ksoftirqd/4 17 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/4 18 root RT -5 0 0 0 S 0.0 0.0 0:00.35 migration/5 We have also tried to run this command. What else command can help us diagnose the exact problem of this high load? netstat -nat |grep 3306 | awk '{print $6}' | sort | uniq -c | sort -n 1 LISTEN 1 SYN_RECV 410 ESTABLISHED 964 TIME_WAIT Output of vmstat 1: ---------------memory--------------- --swap-- --io-- --system-- -----cpu------ r b swpd free buff cache si so bi bo in cs us sy id wa st 2 0 0 12978936 30944 15172360 0 0 259 3 184 265 6 6 77 12 0

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  • CPU Utilization LAMP stack

    - by Max
    We've got an ec2 m2.4xlarge running Magento (centos 5.6, httpd 2.2, php 5.2.17 with eaccelerator 0.9.5.3, mysql 5.1.52). Right now we're getting a large traffic spike, and our top looks like this: top - 09:41:29 up 31 days, 1:12, 1 user, load average: 120.01, 129.03, 113.23 Tasks: 1190 total, 18 running, 1172 sleeping, 0 stopped, 0 zombie Cpu(s): 97.3%us, 1.8%sy, 0.0%ni, 0.5%id, 0.0%wa, 0.0%hi, 0.0%si, 0.4%st Mem: 71687720k total, 36898928k used, 34788792k free, 49692k buffers Swap: 880737784k total, 0k used, 880737784k free, 1586524k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 2433 mysql 15 0 23.6g 4.5g 7112 S 564.7 6.6 33607:34 mysqld 24046 apache 16 0 411m 65m 28m S 26.4 0.1 0:09.05 httpd 24360 apache 15 0 410m 60m 25m S 26.4 0.1 0:03.65 httpd 24993 apache 16 0 410m 57m 21m S 26.1 0.1 0:01.41 httpd 24838 apache 16 0 428m 74m 20m S 24.8 0.1 0:02.37 httpd 24359 apache 16 0 411m 62m 26m R 22.3 0.1 0:08.12 httpd 23850 apache 15 0 411m 64m 27m S 16.8 0.1 0:14.54 httpd 25229 apache 16 0 404m 46m 17m R 10.2 0.1 0:00.71 httpd 14594 apache 15 0 404m 63m 34m S 8.4 0.1 1:10.26 httpd 24955 apache 16 0 404m 50m 21m R 8.4 0.1 0:01.66 httpd 24313 apache 16 0 399m 46m 22m R 8.1 0.1 0:02.30 httpd 25119 apache 16 0 411m 59m 23m S 6.8 0.1 0:01.45 httpd Questions: Would giving msyqld more memory help it cache queries and react faster? If so, how? Other than splitting mysql and php to separate servers (which we're about to do) is there anything else we could/should be doing? Thanks! UPDATE: Here's our my.cnf along with the output of mysqltuner. It looks like a cache problem. Thanks again! # cat /etc/my.cnf [client] port = **** socket = /var/lib/mysql/mysql.sock [mysqld] datadir=/mnt/persistent/mysql port=**** socket=/var/lib/mysql/mysql.sock key_buffer = 512M max_allowed_packet = 64M table_cache = 1024 sort_buffer_size = 8M read_buffer_size = 4M read_rnd_buffer_size = 2M myisam_sort_buffer_size = 64M thread_cache_size = 128M tmp_table_size = 128M join_buffer_size = 1M query_cache_limit = 2M query_cache_size= 64M query_cache_type = 1 max_connections = 1000 thread_stack = 128K thread_concurrency = 48 log-bin=mysql-bin server-id = 1 wait_timeout = 300 innodb_data_home_dir = /mnt/persistent/mysql/ innodb_data_file_path = ibdata1:10M:autoextend innodb_buffer_pool_size = 20G innodb_additional_mem_pool_size = 20M innodb_log_file_size = 64M innodb_log_buffer_size = 8M innodb_flush_log_at_trx_commit = 1 innodb_lock_wait_timeout = 50 innodb_thread_concurrency = 48 ft_min_word_len=3 [myisamchk] ft_min_word_len=3 key_buffer = 128M sort_buffer_size = 128M read_buffer = 2M write_buffer = 2M # ./mysqltuner.pl >> MySQLTuner 1.2.0 - Major Hayden <[email protected]> >> Bug reports, feature requests, and downloads at http://mysqltuner.com/ >> Run with '--help' for additional options and output filtering -------- General Statistics -------------------------------------------------- [--] Skipped version check for MySQLTuner script [OK] Currently running supported MySQL version 5.1.52-log [OK] Operating on 64-bit architecture -------- Storage Engine Statistics ------------------------------------------- [--] Status: +Archive -BDB +Federated +InnoDB -ISAM -NDBCluster [--] Data in MyISAM tables: 2G (Tables: 26) [--] Data in InnoDB tables: 749M (Tables: 250) [!!] Total fragmented tables: 262 -------- Security Recommendations ------------------------------------------- -------- Performance Metrics ------------------------------------------------- [--] Up for: 31d 2h 30m 38s (680M q [253.371 qps], 2M conn, TX: 4825B, RX: 236B) [--] Reads / Writes: 89% / 11% [--] Total buffers: 20.6G global + 15.1M per thread (1000 max threads) [OK] Maximum possible memory usage: 35.4G (51% of installed RAM) [OK] Slow queries: 0% (35K/680M) [OK] Highest usage of available connections: 53% (537/1000) [OK] Key buffer size / total MyISAM indexes: 512.0M/457.2M [OK] Key buffer hit rate: 100.0% (9B cached / 264K reads) [OK] Query cache efficiency: 42.3% (260M cached / 615M selects) [!!] Query cache prunes per day: 4384652 [OK] Sorts requiring temporary tables: 0% (1K temp sorts / 38M sorts) [!!] Joins performed without indexes: 100404 [OK] Temporary tables created on disk: 17% (7M on disk / 45M total) [OK] Thread cache hit rate: 99% (537 created / 2M connections) [!!] Table cache hit rate: 0% (1K open / 946K opened) [OK] Open file limit used: 9% (453/5K) [OK] Table locks acquired immediately: 99% (758M immediate / 758M locks) [OK] InnoDB data size / buffer pool: 749.3M/20.0G -------- Recommendations ----------------------------------------------------- General recommendations: Run OPTIMIZE TABLE to defragment tables for better performance Enable the slow query log to troubleshoot bad queries Adjust your join queries to always utilize indexes Increase table_cache gradually to avoid file descriptor limits Variables to adjust: query_cache_size (> 64M) join_buffer_size (> 1.0M, or always use indexes with joins) table_cache (> 1024)

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  • Debian virtual memory reaching limit

    - by Gregor
    As a relative newbie to systems, I inherited a Debian server and I've noticed that virtual memory is very high (around 95%!). The server has been running slow for around 6 months, and I was wondering if any of you had any tips on things I could try, particularly on freeing up memory. The server hosts various websites and also a Postit email server. Here are the details: Operating system Debian Linux 5.0 Webmin version 1.580 Time on system Thu Apr 12 11:12:21 2012 Kernel and CPU Linux 2.6.18-6-amd64 on x86_64 Processor information Intel(R) Core(TM)2 Duo CPU E7400 @ 2.80GHz, 2 cores System uptime 229 days, 12 hours, 50 minutes Running processes 138 CPU load averages 0.10 (1 min) 0.28 (5 mins) 0.36 (15 mins) CPU usage 14% user, 1% kernel, 0% IO, 85% idle Real memory 2.94 GB total, 1.69 GB used Virtual memory 3.93 GB total, 3.84 GB used Local disk space 142.84 GB total, 116.13 GB used Free m output: free -m total used free shared buffers cached Mem: 3010 2517 492 0 107 996 -/+ buffers/cache: 1413 1596 Swap: 4024 3930 93 Top output: top - 11:59:57 up 229 days, 13:38, 1 user, load average: 0.26, 0.24, 0.26 Tasks: 136 total, 2 running, 134 sleeping, 0 stopped, 0 zombie Cpu(s): 3.8%us, 0.5%sy, 0.0%ni, 95.0%id, 0.7%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 3082544k total, 2773160k used, 309384k free, 111496k buffers Swap: 4120632k total, 4024712k used, 95920k free, 1036136k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 28796 www-data 16 0 304m 68m 6188 S 8 2.3 0:03.13 apache2 1 root 15 0 10304 592 564 S 0 0.0 0:00.76 init 2 root RT 0 0 0 0 S 0 0.0 0:04.06 migration/0 3 root 34 19 0 0 0 S 0 0.0 0:05.67 ksoftirqd/0 4 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/0 5 root RT 0 0 0 0 S 0 0.0 0:00.06 migration/1 6 root 34 19 0 0 0 S 0 0.0 0:01.26 ksoftirqd/1 7 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/1 8 root 10 -5 0 0 0 S 0 0.0 0:00.12 events/0 9 root 10 -5 0 0 0 S 0 0.0 0:00.00 events/1 10 root 10 -5 0 0 0 S 0 0.0 0:00.00 khelper 11 root 10 -5 0 0 0 S 0 0.0 0:00.02 kthread 16 root 10 -5 0 0 0 S 0 0.0 0:15.51 kblockd/0 17 root 10 -5 0 0 0 S 0 0.0 0:01.32 kblockd/1 18 root 15 -5 0 0 0 S 0 0.0 0:00.00 kacpid 127 root 10 -5 0 0 0 S 0 0.0 0:00.00 khubd 129 root 10 -5 0 0 0 S 0 0.0 0:00.00 kseriod 180 root 10 -5 0 0 0 S 0 0.0 70:09.05 kswapd0 181 root 17 -5 0 0 0 S 0 0.0 0:00.00 aio/0 182 root 17 -5 0 0 0 S 0 0.0 0:00.00 aio/1 780 root 16 -5 0 0 0 S 0 0.0 0:00.00 ata/0 782 root 16 -5 0 0 0 S 0 0.0 0:00.00 ata/1 783 root 16 -5 0 0 0 S 0 0.0 0:00.00 ata_aux 802 root 10 -5 0 0 0 S 0 0.0 0:00.00 scsi_eh_0 803 root 10 -5 0 0 0 S 0 0.0 0:00.00 scsi_eh_1 804 root 10 -5 0 0 0 S 0 0.0 0:00.00 scsi_eh_2 805 root 10 -5 0 0 0 S 0 0.0 0:00.00 scsi_eh_3 1013 root 10 -5 0 0 0 S 0 0.0 49:27.78 kjournald 1181 root 15 -4 16912 452 448 S 0 0.0 0:00.05 udevd 1544 root 14 -5 0 0 0 S 0 0.0 0:00.00 kpsmoused 1706 root 13 -5 0 0 0 S 0 0.0 0:00.00 kmirrord 1995 root 18 0 193m 3324 1688 S 0 0.1 8:52.77 rsyslogd 2031 root 15 0 48856 732 608 S 0 0.0 0:01.86 sshd 2071 root 25 0 17316 1072 1068 S 0 0.0 0:00.00 mysqld_safe 2108 mysql 15 0 320m 72m 4368 S 0 2.4 1923:25 mysqld 2109 root 18 0 3776 500 496 S 0 0.0 0:00.00 logger 2180 postgres 15 0 99504 3016 2880 S 0 0.1 1:24.15 postgres 2184 postgres 15 0 99504 3596 3420 S 0 0.1 0:02.08 postgres 2185 postgres 15 0 99504 696 628 S 0 0.0 0:00.65 postgres 2186 postgres 15 0 99640 892 648 S 0 0.0 0:01.18 postgres

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  • Where's my memory?! Nginx + PHP-FPM front end webserver slows to a crawl...

    - by incredimike
    I'm not sure if I have a problem with a memory leak (as my hosting company suggests), or if we both need to read http://linuxatemyram.com. Maybe you clever people can help us out? This is a front-end webserver VM running essentially only nginx & php-fpm on RHEL 5.5. This server is powering Magento, a PHP eCommerce thinggy. The server is running in a shared environment, but we're changing that soon. Anyway.. after a reboot the server runs just fine, but within a day it will grind itself into nothingness. Pages will take literally 2 minutes to load, CPU spikes like crazy, etc.. The console is even sluggish when I SSH in. It's like my whole server is being brought to its knees. I've also been monitoring the DB server via top and tcpdumping incoming traffic. The DB stays idle for a good portion of that "slow" load time. When i start seeing queries coming from the front-end server, the page loads soon afterward. Here are some stats after me logging in during a slow-down, after restarting php-fpm: [mike@front01 ~]$ free -m total used free shared buffers cached Mem: 5963 5217 745 0 192 314 -/+ buffers/cache: 4711 1252 Swap: 4047 4 4042 [mike@front01 ~]$ top top - 11:38:55 up 2 days, 1:01, 3 users, load average: 0.06, 0.17, 0.21 Tasks: 131 total, 1 running, 130 sleeping, 0 stopped, 0 zombie Cpu0 : 0.0%us, 0.3%sy, 0.0%ni, 99.3%id, 0.3%wa, 0.0%hi, 0.0%si, 0.0%st Cpu1 : 0.3%us, 0.0%sy, 0.0%ni, 99.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu2 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu3 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 6106800k total, 5361288k used, 745512k free, 199960k buffers Swap: 4144728k total, 4976k used, 4139752k free, 328480k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 31806 apache 15 0 601m 120m 37m S 0.0 2.0 0:22.23 php-fpm 31805 apache 15 0 549m 66m 31m S 0.0 1.1 0:14.54 php-fpm 31809 apache 16 0 547m 65m 32m S 0.0 1.1 0:12.84 php-fpm 32285 apache 15 0 546m 63m 33m S 0.0 1.1 0:09.22 php-fpm 32373 apache 15 0 546m 62m 32m S 0.0 1.1 0:09.66 php-fpm 31808 apache 16 0 543m 60m 35m S 0.0 1.0 0:18.93 php-fpm 31807 apache 16 0 533m 49m 30m S 0.0 0.8 0:08.93 php-fpm 32092 apache 15 0 535m 48m 27m S 0.0 0.8 0:06.67 php-fpm 4392 root 18 0 194m 10m 7184 S 0.0 0.2 0:06.96 cvd 4064 root 15 0 154m 8304 4220 S 0.0 0.1 3:55.57 snmpd 4394 root 15 0 119m 5660 2944 S 0.0 0.1 0:02.84 EvMgrC 31804 root 15 0 519m 5180 932 S 0.0 0.1 0:00.46 php-fpm 4138 ntp 15 0 23396 5032 3904 S 0.0 0.1 0:02.38 ntpd 643 nginx 15 0 95276 4408 1524 S 0.0 0.1 0:01.15 nginx 5131 root 16 0 90128 3340 2600 S 0.0 0.1 0:01.41 sshd 28467 root 15 0 90128 3340 2600 S 0.0 0.1 0:00.35 sshd 32602 root 16 0 90128 3332 2600 S 0.0 0.1 0:00.36 sshd 1614 root 16 0 90128 3308 2588 S 0.0 0.1 0:00.02 sshd 2817 root 5 -10 7216 3140 1724 S 0.0 0.1 0:03.80 iscsid 4161 root 15 0 66948 2340 800 S 0.0 0.0 0:10.35 sendmail 1617 nicole 17 0 53876 2000 1516 S 0.0 0.0 0:00.02 sftp-server ... Is there anything else I should be looking at, or any more information that might be useful? I'm just a developer, but the slowdowns on this system worry me and make it hard to do my work.. Help me out, ServerFault!

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  • What's going on with my server? High load, lots of idle CPU time, low disk utilization

    - by Jonathan
    I run a web site and send a legitimate opt-in, daily email newsletter to subscribers. Both the web hosting and email sending are done by the same machine. I have about 100,000 subscribers who have opted in to my daily email newsletter. My PHP script did a pretty good job sending mail to all of them until fairly recently, but as the list has grown I can't keep up. When I run top, I have very high load--usually at least 6 or 7, sometimes as high as 15--even though I only have two CPUs. However, when I run sar, my CPU is idle an average of about 30% of the time. So, it seems I'm not CPU bound. When I run iostat, it seems as though I'm not disk bound because my %util for each device is very low (no more than 5%). Given that I don't seem to be CPU bound or disk bound, why is top reporting such high load? Additionally, since I don't seem to be CPU bound or disk bound, why is my email sending script not able to keep up? Here's what I see when running top: top - 11:33:28 up 74 days, 18:49, 2 users, load average: 7.65, 8.79, 8.28 Tasks: 168 total, 5 running, 162 sleeping, 0 stopped, 1 zombie Cpu(s): 38.9%us, 58.6%sy, 0.8%ni, 0.0%id, 0.7%wa, 0.2%hi, 0.8%si, 0.0%st Mem: 3083012k total, 2144436k used, 938576k free, 281136k buffers Swap: 2048248k total, 39164k used, 2009084k free, 1470412k cached Here's what I see when running iostat -mx: avg-cpu: %user %nice %system %iowait %steal %idle 34.80 1.20 55.24 0.37 0.00 8.38 Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s avgrq-sz avgqu-sz await svctm %util sda 0.19 71.70 1.59 29.45 0.02 0.07 5.90 0.55 17.82 1.16 3.59 sda1 0.00 0.00 0.00 0.00 0.00 0.00 7.10 0.00 13.80 13.72 0.00 sda2 0.05 50.45 1.13 24.57 0.01 0.29 24.25 0.35 13.43 1.15 2.97 sda3 0.05 10.17 0.20 2.33 0.01 0.05 43.75 0.05 20.96 2.45 0.62 sda4 0.00 0.00 0.00 0.00 0.00 0.00 2.00 0.00 70.50 70.50 0.00 sda5 0.07 0.22 0.03 0.07 0.00 0.00 32.84 0.08 856.19 8.03 0.08 sda6 0.02 5.45 0.03 0.72 0.00 0.02 67.55 0.02 26.72 5.26 0.39 sda7 0.00 1.56 0.00 0.42 0.00 0.01 38.04 0.00 8.88 5.84 0.24 sda8 0.01 3.84 0.20 1.35 0.00 0.02 28.55 0.05 31.90 4.08 0.63 Here's what I see when running sar: 09:40:02 AM CPU %user %nice %system %iowait %steal %idle 09:50:01 AM all 30.59 1.01 49.80 0.23 0.00 18.37 10:00:08 AM all 31.73 0.92 51.66 0.13 0.00 15.55 10:10:06 AM all 30.43 0.99 48.94 0.26 0.00 19.38 10:20:01 AM all 29.58 1.00 47.76 0.25 0.00 21.42 10:30:01 AM all 29.37 1.02 47.30 0.18 0.00 22.13 10:40:06 AM all 32.50 1.01 52.94 0.16 0.00 13.39 10:50:01 AM all 30.49 1.00 49.59 0.15 0.00 18.77 11:00:01 AM all 29.43 0.99 47.71 0.17 0.00 21.71 11:10:07 AM all 30.26 0.93 49.48 0.83 0.00 18.50 11:20:02 AM all 29.83 0.81 48.51 1.32 0.00 19.52 11:30:06 AM all 31.18 0.88 51.33 1.15 0.00 15.47 Average: all 26.21 1.15 42.62 0.48 0.00 29.54 Here are the top handful of processes listed at the particular time I happened to run top -c: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 8180 mysql 16 0 57448 19m 2948 S 26.6 0.7 4702:26 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/bristno.pid --skip-external-locking 26956 brristno 17 0 0 0 0 Z 8.0 0.0 0:00.24 [php] <defunct> 26958 brristno 17 0 94408 43m 37m R 5.0 1.4 0:00.15 /usr/bin/php /home/brristno/public_html/dbv.php 22852 nobody 16 0 9628 2900 1524 S 0.7 0.1 0:00.17 /usr/local/apache/bin/httpd -k start -DSSL 8591 brristno 34 19 96896 13m 6652 S 0.3 0.4 0:29.82 /usr/local/bin/php /home/brristno/bin/mailer.php 1qwqyb6 i0gbor 24469 nobody 16 0 9628 2880 1508 S 0.3 0.1 0:00.08 /usr/local/apache/bin/httpd -k start -DSSL 25495 nobody 15 0 9628 2876 1500 S 0.3 0.1 0:00.06 /usr/local/apache/bin/httpd -k start -DSSL 26149 nobody 15 0 9628 2864 1504 S 0.3 0.1 0:00.04 /usr/local/apache/bin/httpd -k start -DSSL

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  • 1600+ 'postfix-queue' processes - OK to have this many?

    - by atomicguava
    I have a Plesk 9.5.4 CentOS server running Postfix. I had been having massive problems with the mailq being full of 'double-bounce' email messages containing errors relating to 'Queue File Write Error', but I believe these are now fixed thanks to this thread. My new problem is that when I run top, I can see lots of processes called 'postfix-queue' and have fairly high load: top - 13:59:44 up 6 days, 21:14, 1 user, load average: 2.33, 2.19, 1.96 Tasks: 1743 total, 1 running, 1742 sleeping, 0 stopped, 0 zombie Cpu(s): 5.1%us, 8.8%sy, 0.0%ni, 85.3%id, 0.8%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 3145728k total, 1950640k used, 1195088k free, 0k buffers Swap: 0k total, 0k used, 0k free, 0k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1324 apache 16 0 344m 33m 5664 S 21.7 1.1 0:03.17 httpd 32443 apache 15 0 350m 36m 6864 S 14.4 1.2 0:13.83 httpd 1678 root 15 0 13948 2568 952 R 2.0 0.1 0:00.37 top 1890 mysql 15 0 689m 318m 7600 S 1.0 10.4 219:45.23 mysqld 1394 apache 15 0 352m 41m 5972 S 0.7 1.3 0:03.91 httpd 1369 apache 15 0 344m 33m 5444 S 0.3 1.1 0:02.03 httpd 1592 apache 15 0 349m 37m 5912 S 0.3 1.2 0:02.52 httpd 1633 apache 15 0 336m 20m 1828 S 0.3 0.7 0:00.01 httpd 1952 root 19 0 335m 28m 10m S 0.3 0.9 1:35.41 httpd 1 root 15 0 10304 732 612 S 0.0 0.0 0:04.41 init 1034 mhandler 15 0 11520 1160 884 S 0.0 0.0 0:00.00 postfix-queue 1036 mhandler 15 0 11516 1120 860 S 0.0 0.0 0:00.00 postfix-queue 1041 mhandler 17 0 11516 1156 884 S 0.0 0.0 0:00.00 postfix-queue 1043 mhandler 15 0 11512 1116 860 S 0.0 0.0 0:00.00 postfix-queue 1063 mhandler 16 0 11516 1160 884 S 0.0 0.0 0:00.00 postfix-queue 1068 mhandler 15 0 11516 1128 860 S 0.0 0.0 0:00.00 postfix-queue 1071 mhandler 17 0 11512 1152 884 S 0.0 0.0 0:00.00 postfix-queue 1072 mhandler 15 0 11512 1116 860 S 0.0 0.0 0:00.00 postfix-queue 1081 mhandler 16 0 11516 1156 884 S 0.0 0.0 0:00.00 postfix-queue 1082 mhandler 15 0 11512 1120 860 S 0.0 0.0 0:00.00 postfix-queue 1089 popuser 15 0 33892 1972 1200 S 0.0 0.1 0:00.02 pop3d 1116 mhandler 16 0 11516 1164 884 S 0.0 0.0 0:00.00 postfix-queue 1117 mhandler 15 0 11516 1124 860 S 0.0 0.0 0:00.00 postfix-queue 1120 mhandler 16 0 11516 1160 884 S 0.0 0.0 0:00.00 postfix-queue 1121 mhandler 15 0 11512 1120 860 S 0.0 0.0 0:00.00 postfix-queue 1130 mhandler 17 0 11516 1160 884 S 0.0 0.0 0:00.00 postfix-queue 1131 mhandler 15 0 11516 1120 860 S 0.0 0.0 0:00.00 postfix-queue 1149 root 17 -4 12572 680 356 S 0.0 0.0 0:00.00 udevd 1181 mhandler 16 0 11516 1160 884 S 0.0 0.0 0:00.00 postfix-queue 1183 mhandler 15 0 11512 1116 860 S 0.0 0.0 0:00.00 postfix-queue 1224 mhandler 16 0 11516 1160 884 S 0.0 0.0 0:00.00 postfix-queue 1225 mhandler 15 0 11516 1120 860 S 0.0 0.0 0:00.00 postfix-queue 1228 apache 15 0 345m 34m 5472 S 0.0 1.1 0:04.64 httpd 1241 mhandler 16 0 11516 1156 884 S 0.0 0.0 0:00.00 postfix-queue 1242 mhandler 15 0 11512 1120 860 S 0.0 0.0 0:00.00 postfix-queue 1251 mhandler 17 0 11516 1156 884 S 0.0 0.0 0:00.00 postfix-queue 1252 mhandler 15 0 11516 1120 860 S 0.0 0.0 0:00.00 postfix-queue 1258 apache 15 0 349m 37m 5444 S 0.0 1.2 0:01.28 httpd When I run ps -Al | grep -c postfix-queue it returns 1618! My question is this: is this normal or is there something else going wrong with Postfix? Right now, if I run mailq it is empty, and qshape deferred / qshape active are empty too. Thanks in advance for your help.

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