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• Failure to toubleshoot a juju charm deployment

  - by Bruno Pereira

  My environments.yaml looks like this: environments: test: type: local control-bucket: juju-a14dfae3830142d9ac23c499395c2785999 admin-secret: 6608267bbd6b447b8c90934167b2a294999 default-series: oneiric juju-origin: distro data-dir: /home/bruno/projects/juju juju bootstrap runs perfect: 2011-11-22 19:19:31,999 INFO Bootstrapping environment 'test' (type: local)... 2011-11-22 19:19:32,004 INFO Checking for required packages... 2011-11-22 19:19:33,584 INFO Starting networking... 2011-11-22 19:19:34,058 INFO Starting zookeeper... 2011-11-22 19:19:34,283 INFO Starting storage server... 2011-11-22 19:19:40,051 INFO Initializing zookeeper hierarchy 2011-11-22 19:19:40,247 INFO Starting machine agent (origin: distro)... [sudo] password for bruno: 2011-11-22 19:23:16,054 INFO Environment bootstrapped 2011-11-22 19:23:16,079 INFO 'bootstrap' command finished successfully Deploy from a known good charm is accepted (tried it with one that I am trying to create): juju deploy --repository=/home/bruno/projects/charms_repo/ local:teamspeak 2011-11-22 19:28:49,929 INFO Charm deployed as service: 'teamspeak' 2011-11-22 19:28:49,962 INFO 'deploy' command finished successfully After this I can see that juju debug-log shows activity and I can see the network indicator going on and off and activity on my hard-disk. Wait... Looking at juju status I get: services: teamspeak: charm: local:oneiric/teamspeak-1 relations: {} units: teamspeak/0: machine: 0 public-address: 192.168.122.226 relations: {} state: start_error juju debug-log does not help and I have no files under /var/log/juju or /var/lib/juju. Last juju debug-log only shows this: 2011-11-22 19:45:20,790 Machine:0: juju.agents.machine DEBUG: Units changed old:set(['wordpress/0']) new:set(['wordpress/0', 'teamspeak/0']) 2011-11-22 19:45:20,823 Machine:0: juju.agents.machine DEBUG: Starting service unit: teamspeak/0 ... 2011-11-22 19:45:21,137 Machine:0: juju.agents.machine DEBUG: Downloading charm local:oneiric/teamspeak-1 to /home/bruno/projects/juju/bruno-test/charms 2011-11-22 19:45:22,115 Machine:0: juju.agents.machine DEBUG: Starting service unit teamspeak/0 2011-11-22 19:45:22,133 Machine:0: unit.deploy INFO: Creating container teamspeak-0... 2011-11-22 19:47:04,586 Machine:0: unit.deploy INFO: Container created for teamspeak/0 2011-11-22 19:47:04,781 Machine:0: unit.deploy DEBUG: Charm extracted into container 2011-11-22 19:47:04,801 Machine:0: unit.deploy DEBUG: Starting container... 2011-11-22 19:47:07,086 Machine:0: unit.deploy INFO: Started container for teamspeak/0 2011-11-22 19:47:07,107 Machine:0: juju.agents.machine INFO: Started service unit teamspeak/0 How can I troubleshot what is happening here?

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• Django rewrites URL as IP address in browser - why?

  - by Mitch

  I am using django, nginx and apache. When I access my site with a URL (e.g., http://www.foo.com/) what appears in my browser address is the IP address with admin appended (e.g., http://123.45.67.890/admin/). When I access the site by IP, it is redirected as expected by django's urls.py (e.g., http://123.45.67.890/ - http://123.45.67.890/accounts/login/?next=/) I would like to have the name URL act the same way as the IP. That is, if the URL goes to a new view, the host in the browser address should remain the same and not change to the IP address. Where should I be looking to fix this? My files: ; cpa.com (apache) NameVirtualHost *:8080 <VirtualHost *:8080> AddOutputFilterByType DEFLATE text/html text/plain text/xml text/css text/javascript application/javascript application/x-javascript BrowserMatch ^Mozilla/4 gzip-only-text/html BrowserMatch ^Mozilla/4\.0[678] no-gzip BrowserMatch \bMSIE !no-gzip !gzip-only-text/htm DocumentRoot /path/to/root ServerName www.foo.com <IfModule mod_rpaf.c> RPAFenable On RPAFsethostname On RPAFproxy_ips 127.0.0.1 </IfModule> <Directory /public/static> AllowOverride None AddHandler mod_python .py PythonHandler mod_python.publisher </Directory> Alias / /dj <Location /> SetHandler python-program PythonPath "['/usr/lib/python2.5/site-packages/django', '/usr/lib/python2.5/site-packages/django/forms'] + sys.path" PythonHandler django.core.handlers.modpython SetEnv DJANGO_SETTINGS_MODULE dj.settings PythonDebug On </Location> </VirtualHost> ; ; ports.conf (apache) Listen 127.0.0.1:8080 ; ; cpa.conf (nginx) server { listen 80; server_name www.foo.com; location /static { root /var/public; index index.html; } location /cpa/js { root /var/public/js; } location /cpa/css { root /var/public/css; } location /djmedia { alias "/usr/lib/python2.5/site-packages/django/contrib/admin/media/"; } location / { include /etc/nginx/proxy.conf; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_pass http://127.0.0.1:8080; } } ; ; proxy.conf (nginx) proxy_redirect off; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; client_max_body_size 10m; client_body_buffer_size 128k; proxy_connect_timeout 90; proxy_send_timeout 90; proxy_read_timeout 500; proxy_buffers 32 4k;

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• Flash Technology Can Revolutionize your IT Infrastructure

  - by kimberly.billings

  A recent article in the Data Center Journal written by Mark Teter outlines how flash is becoming a disruptive technology in the data center and how it will soon replace HDDs in the storage hierarchy. As Teter explains, the drivers behind this trend are lower cost/performance and power savings; flash is over 100x faster for reads than the fastest HDD, and while it is expensive, it can produce dramatic reductions in the cost of performance as measured in Input/Outputs per second (IOPS). What's more, flash consumes 1/5th the power of HDD, so it's faster AND greener. Teter writes, "when appropriately used, flash turns the current economics of IT performance on its head. That's disruptive." Exadata Smart Flash Cache in the Sun Oracle Database Machine makes intelligent use of flash storage to deliver extreme performance for OLTP and mixed workloads. It intelligently caches data from the Oracle Database replacing slow mechanical I/O operations to disk with very rapid flash memory operations. Exadata Smart Flash Cache is the fundamental technology of the Sun Oracle Database Machine that enables the processing of up to 1 million random I/O operations per second (IOPS), and the scanning of data within Exadata storage at up to 50 GB/second. Are you incorporating flash into your storage strategy? Let us know! Read more: "Flash technology can revolutionize your IT infrastructure", The Data Center Journal, March 30, 2010. Exadata Smart Flash Cache and the Sun Oracle Database Machine white paper var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www."); document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E")); try { var pageTracker = _gat._getTracker("UA-13185312-1"); pageTracker._trackPageview(); } catch(err) {}

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• How to create a very simple external FastCGI configuration in apache?

  - by Thiado de Arruda

  I have an externally started FastCGI application that listens on socket '/tmp/foo.sock' and a directory of static files in '/srv/static'. Apache has all needed permissions on the socket and the directories. What I need : All requests starting with '/static' should be handled by apache using the contents of '/srv/static'. All other requests should be handled by the FastCGI application. Here is my current virtual host configuration: <VirtualHost *:80> ServerAdmin [email protected] ServerName www.foo.com ServerAlias foo.com Alias /static /srv/static FastCgiExternalServer /* -socket /tmp/foo.sock ErrorLog /var/log/apache2/error.log # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. LogLevel warn CustomLog /var/log/apache2/access.log combined </VirtualHost> Even though this seems simple, its giving me quite the headache. According to http://www.fastcgi.com/mod_fastcgi/docs/mod_fastcgi.html#FastCgiExternalServer the first parameter to 'FastCgiExternalServer' should be a 'filename' that when matched will cause apache to delegate the request to the external FastCGI app. What am I missing here?

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• Tomcat cookies not working via my ProxyPass VirtualHost

  - by John

  Hi there. I'm having some issues with getting cookies to work when using a ProxyPass to redirect traffic on port 80 to a web-application hosted via Tomcat. My motivation for enabling cookies is to get rid of the "jsessionid=" parameter that is appended to the URLs. I've enabled cookies in my context.xml in META-INF/ for my web application. When I access the webapplication via http://url:8080/webapp it works as expected, the jsessionid parameter is not visible in the URL, instead it's stored in a cookie. When accessing my website via an apache2 virtualhost the cookies doesn't seem to work because now "jsessionid" is being appended to the URLs. How can I solve this issue? Here's my VHost configuration: <VirtualHost *:80 ServerName somedomain.no ServerAlias www.somedomain.no <Proxy * Order deny,allow Allow from all </Proxy ProxyPreserveHost Off ProxyPass / http://localhost:8080/webapp/ ProxyPassReverse / http://localhost:8080/webapp/ ErrorLog /var/log/apache2/somedomain.no.error.log CustomLog /var/log/apache2/somedomain.no.access.log combined </VirtualHost

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• TakeWhile and SkipWhile method in LINQ

  - by vik20000in

   In my last post I talked about how to use the take and the Skip keyword to filter out the number of records that we are fetching. But there is only problem with the take and skip statement. The problem lies in the dependency where by the number of records to be fetched has to be passed to it. Many a times the number of records to be fetched is also based on the query itself. For example if we want to continue fetching records till a certain condition is met on the record set. Let’s say we want to fetch records from the array of number till we get 7. For this kind of query LINQ has exposed the TakeWhile Method.     int[] numbers = { 5, 4, 1, 3, 9, 8, 6, 7, 2, 0 };     var firstNumbersLessThan6 = numbers.TakeWhile(n => n < 7);   In the same way we can also use the SkipWhile statement. The skip while statement will skip all the records that do not match certain condition provided. In the example below we are skiping all those number which are not divisible by 3. Remember we could have done this with where clause also, but SkipWhile method can be useful in many other situation and hence the example and the keyword.     int[] numbers = { 5, 4, 1, 3, 9, 8, 6, 7, 2, 0 };     var allButFirst3Numbers = numbers.SkipWhile(n => n % 3 != 0); Vikram

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• Fixing unbootable installation on LVM root from Desktop LiveCD

  - by intuited

  I just did an installation from the 10.10 Desktop LiveCD, making the root volume an LVM LV. Apparently this is not supported; I managed it by taking these steps before starting the GUI installer app: installing the lvm2 package on the running system creating an LVM-type partition on the system hard drive creating a physical volume, a volume group and a root LV using the LVM tools. I also created a second LV for /var; this I don't think is relevant. creating a filesystem (ext4) on each of the two LVs. After taking these steps, the GUI installer offered the two LVs as installation targets; I gladly accepted, also putting /boot on a primary partition separate from the LVM partition. Installation seemed to go smoothly, and I've verified that both the root and var volumes do contain acceptable-looking directory structures. However, booting fails; if I understood correctly what happened, I was dropped into a busybox running in the initrd filesystem. Although I haven't worked through the entirety of the grub2 docs yet, it looks like the entry that tries to boot my new system is correct: menuentry 'Ubuntu, with Linux 2.6.35-22-generic' --class ubuntu --class gnu-linux --class gnu --class os { recordfail insmod part_msdos insmod ext2 set root='(hd0,msdos3)' search --no-floppy --fs-uuid --set $UUID_OF_BOOT_FILESYSTEM linux /vmlinuz-2.6.35-22-generic root=/dev/mapper/$LVM_VOLUME_GROUP-root ro quiet splash initrd /initrd.img-2.6.35-22-generic } Note that $VARS are replaced in the actual grub.cfg with their corresponding values. I rebooted back into the livecd and have unpacked the initrd image into a temp directory. It looks like the initrd image lacks LVM functionality. For example, if I'm reading /usr/share/initramfs-tools/hooks/lvm2 (installed with lvm2 on the livecd-booted system, not present on the installed one) correctly, an lvm executable should be situated in /sbin; that is not the case. What's the best way to remedy this situation? I realize that it would be easier to just use the alternate install CD, which apparently supports LVM, but I don't want to wait for it to download and then have to reinstall.

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• Apache 2.4.3 php-fpm mod_fast_cgi and mod_cache

  - by Anjia

  Did anybody successfully configured mod_cache in apache 2.4 with php-fpm and fastcgi? my cgi config: <IfModule mod_fastcgi.c> Alias /php5.fastcgi /var/www/fastcgi/php5.fastcgi AddHandler php-script .php FastCGIExternalServer /var/www/fastcgi/php5.fastcgi -socket /mnt/tmp/fast/php-fpm.sock -idle-timeout 1600 -pass-header Authorization Action php-script /php5.fastcgi virtual My php-fpm config is standard and I am loading mod_cache and mod_disk_cache in Apache. However the Apache does not seems to cache any content. The debug log file: Fri Sep 07 23:22:59.691333 2012] [cache:debug] [pid 35623:tid 123613201929984] mod_cache.c(161): [client 10.0.0.22:21938] AH00750: Adding CACHE_SAVE filter for /index.html [Fri Sep 07 23:22:59.691345 2012] [cache:debug] [pid 35623:tid 123613201929984] mod_cache.c(171): [client 10.0.0.22:21938] AH00751: Adding CACHE_REMOVE_URL filter for /index.html [Fri Sep 07 23:23:01.326598 2012] [cache:debug] [pid 35623:tid 123613185144576] cache_storage.c(626): [client 10.0.0.110:5414] AH00698: cache: Key for entity /index.html?(null) is `http://10.0.1.16:8080/index.html?`

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• How to get nginx to serve up on an elastic IP

  - by geekbri

  I have an EC2 instance which is serving up PHP pages with nginx and php-fpm. This works perfectly fine when accessed through the public DNS for the instance. However if I try to access the site with the Elastic IP which is bound to it, it serves up a generic "Welcome to nginx" page, even though in my server block i have listen 80 (which i thought listened on all incoming IPs on port 80). Here is my nginx config. server { listen 80; access_log /var/log/nginx/access.log; root "/var/www/clipperz/"; index index.html index.php; # Default location location / { try_files $uri $uri/ index.html; } # Parse all .php file in the $document_root directory location ~ .php$ { include fastcgi_params; fastcgi_pass 127.0.0.1:9000; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; } }

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• Fresh Red Hat Enterprise Linux fails to install httpd using yum

  - by Julian

  I'm trying to install a LAMP stack in a fresh red hat server but yum is misbehaving. Being linux illiterate I'm at a loss. $yum install httpd Loaded plugins: security Setting up Install Process No package httpd available. Nothing to do My yum config $ cat /etc/yum.conf [main] cachedir=/var/cache/yum keepcache=0 debuglevel=2 logfile=/var/log/yum.log distroverpkg=redhat-release tolerant=1 exactarch=1 obsoletes=1 gpgcheck=1 plugins=1 # Note: yum-RHN-plugin doesn't honor this. metadata_expire=1h # Default. # installonly_limit = 3 # PUT YOUR REPOS HERE OR IN separate files named file.repo # in /etc/yum.repos.d Other stuff in the yum.repos.d dir $ ls -lah /etc/yum.repos.d/ total 12K drwxr-xr-x 2 root root 4.0K Feb 4 01:15 . drwxr-xr-x 59 root root 4.0K Feb 4 01:28 .. -rw-r--r-- 1 root root 561 Mar 10 2010 rhel-debuginfo.repo What could be going on? I thought "out of the box" RHEL5.5 would be friendlier :)

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• Snort: not logging anything

  - by ethrbunny

  My site seems to be the target of quite a bit of probing over the last few months. In an attempt to get a better handle on this I installed SNORT on one of the machines that has external exposure. Something must not be installed correctly as I see lots of probing in /var/log/messages but snort isn't logging anything. System: CentOS 6.2 (32 bit) Snort: (latest build and rules) Snort configured from this v excellent site: http://nachum234.no-ip.org/security/snort/001-snort-installation-on-centos-6-2/ snort running as daemon: /usr/local/bin/snort -d -D -i bond0 -u snort -g snort -c /etc/snort.d/snort.conf -l /var/log/snort The snort.log file is empty despite hundreds (or more) failed login attempts from individual IP addresses. Maybe Im missing the purpose of SNORT? I was hoping it would log this sort of info.

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• Debian apt dependency mismatch (libc6)

  - by Sean Gordon

  Earlier, I tried to install package via apt-get (cython), but it failed with the Errors were encountered while processing: message, and since then, apt is refusing to install anything. apt-get check output below: root@dix:~# apt-get check Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these. The following packages have unmet dependencies: libc6 : Depends: libc-bin (= 2.11.3-2) but 2.11.3-4 is installed libc6-dev : Depends: libc6 (= 2.11.3-4) but 2.11.3-2 is installed libc6-i386 : Depends: libc6 (= 2.11.3-4) but 2.11.3-2 is installed E: Unmet dependencies. Try using -f. Apt/aptitude don't seem to be able to fix this dependency issue, and I don't know what to do. Edit: Running apt-get -f install results in no change, and my sources are all squeeze. Running apt-get update then apt-get dist-upgrade show no change either. Edit 2: I went back to try this again in a new terminal and apt-get -f install gives this error: dpkg: error processing /var/cache/apt/archives/libc6_2.11.3-4_amd64.deb (--unpack): subprocess new pre-installation script killed by signal (Aborted) configured to not write apport reports Errors were encountered while processing: /var/cache/apt/archives/libc6_2.11.3-4_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1) Edit 3: Using apt-get clean first, then the previous commands, results in the first error again. Using apt-get -f dist-upgrade gives the below. Reading package lists... Building dependency tree... Reading state information... Correcting dependencies... Done The following packages will be upgraded: apache2 apache2-mpm-prefork apache2-utils apache2.2-bin apache2.2-common at automake base-files bind9 bind9-doc bind9-host bind9utils debian-archive-keyring dnsutils dpkg-dev file host initscripts isc-dhcp-client isc-dhcp-common krb5-multidev libapr1 libbind9-60 libc6 libdns69 libdpkg-perl libexpat1 libexpat1-dev libgc1c2 libgssapi-krb5-2 libgssrpc4 libisc62 libisccc60 libisccfg62 libk5crypto3 libkadm5clnt-mit7 libkadm5srv-mit7 libkdb5-4 libkrb5-3 libkrb5-dev libkrb5support0 liblwres60 libmagic1 libmysqlclient16 libnss3-1d libssl-dev libssl0.9.8 libtiff4 libtiff4-dev libtiffxx0c2 libxi6 libxml2 linux-libc-dev lwresd mysql-client-5.1 mysql-common mysql-server mysql-server-5.1 mysql-server-core-5.1 openjdk-6-jre openjdk-6-jre-headless openjdk-6-jre-lib openssh-client openssh-server openssl procps python python-crypto python-minimal sudo sysv-rc sysvinit sysvinit-utils tzdata tzdata-java 75 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 5 not fully installed or removed. Need to get 0 B/79.9 MB of archives. After this operation, 1,411 kB of additional disk space will be used. (Reading database ... 52241 files and directories currently installed.) Preparing to replace libc6 2.11.3-2 (using .../libc6_2.11.3-4_amd64.deb) ... *** stack smashing detected ***: /usr/bin/perl terminated ======= Backtrace: ========= /lib/libc.so.6(__fortify_fail+0x37)[0x7fdaad9b9f87] /lib/libc.so.6(__fortify_fail+0x0)[0x7fdaad9b9f50] /usr/lib/libperl.so.5.10(Perl_yylex+0x5896)[0x7fdaae343346] [0x8e83a0] ======= Memory map: ======== 00400000-00402000 r-xp 00000000 08:01 525338 /usr/bin/perl 00601000-00602000 rw-p 00001000 08:01 525338 /usr/bin/perl 00602000-0091f000 rw-p 00000000 00:00 0 [heap] 7fdaaca54000-7fdaaca6a000 r-xp 00000000 08:01 393818 /lib/libgcc_s.so.1 7fdaaca6a000-7fdaacc69000 ---p 00016000 08:01 393818 /lib/libgcc_s.so.1 7fdaacc69000-7fdaacc6a000 rw-p 00015000 08:01 393818 /lib/libgcc_s.so.1 7fdaacc6a000-7fdaacc6f000 r-xp 00000000 08:01 524949 /usr/lib/perl5/auto/Locale/gettext/gettext.so 7fdaacc6f000-7fdaace6e000 ---p 00005000 08:01 524949 /usr/lib/perl5/auto/Locale/gettext/gettext.so 7fdaace6e000-7fdaace6f000 rw-p 00004000 08:01 524949 /usr/lib/perl5/auto/Locale/gettext/gettext.so 7fdaace6f000-7fdaace79000 r-xp 00000000 08:01 532753 /usr/lib/perl/5.10.1/auto/Encode/Encode.so 7fdaace79000-7fdaad078000 ---p 0000a000 08:01 532753 /usr/lib/perl/5.10.1/auto/Encode/Encode.so 7fdaad078000-7fdaad079000 rw-p 00009000 08:01 532753 /usr/lib/perl/5.10.1/auto/Encode/Encode.so 7fdaad079000-7fdaad07e000 r-xp 00000000 08:01 525444 /usr/lib/perl/5.10.1/auto/IO/IO.so 7fdaad07e000-7fdaad27d000 ---p 00005000 08:01 525444 /usr/lib/perl/5.10.1/auto/IO/IO.so 7fdaad27d000-7fdaad27e000 rw-p 00004000 08:01 525444 /usr/lib/perl/5.10.1/auto/IO/IO.so 7fdaad27e000-7fdaad299000 r-xp 00000000 08:01 525450 /usr/lib/perl/5.10.1/auto/POSIX/POSIX.so 7fdaad299000-7fdaad498000 ---p 0001b000 08:01 525450 /usr/lib/perl/5.10.1/auto/POSIX/POSIX.so 7fdaad498000-7fdaad49b000 rw-p 0001a000 08:01 525450 /usr/lib/perl/5.10.1/auto/POSIX/POSIX.so 7fdaad49b000-7fdaad49e000 r-xp 00000000 08:01 525436 /usr/lib/perl/5.10.1/auto/Fcntl/Fcntl.so 7fdaad49e000-7fdaad69e000 ---p 00003000 08:01 525436 /usr/lib/perl/5.10.1/auto/Fcntl/Fcntl.so 7fdaad69e000-7fdaad69f000 rw-p 00003000 08:01 525436 /usr/lib/perl/5.10.1/auto/Fcntl/Fcntl.so 7fdaad69f000-7fdaad6a7000 r-xp 00000000 08:01 393824 /lib/libcrypt-2.11.3.so 7fdaad6a7000-7fdaad8a6000 ---p 00008000 08:01 393824 /lib/libcrypt-2.11.3.so 7fdaad8a6000-7fdaad8a7000 r--p 00007000 08:01 393824 /lib/libcrypt-2.11.3.so 7fdaad8a7000-7fdaad8a8000 rw-p 00008000 08:01 393824 /lib/libcrypt-2.11.3.so 7fdaad8a8000-7fdaad8d6000 rw-p 00000000 00:00 0 7fdaad8d6000-7fdaada2f000 r-xp 00000000 08:01 393822 /lib/libc-2.11.3.so 7fdaada2f000-7fdaadc2e000 ---p 00159000 08:01 393822 /lib/libc-2.11.3.so 7fdaadc2e000-7fdaadc32000 r--p 00158000 08:01 393822 /lib/libc-2.11.3.so 7fdaadc32000-7fdaadc33000 rw-p 0015c000 08:01 393822 /lib/libc-2.11.3.so 7fdaadc33000-7fdaadc38000 rw-p 00000000 00:00 0 7fdaadc38000-7fdaadc4f000 r-xp 00000000 08:01 393248 /lib/libpthread-2.11.3.so 7fdaadc4f000-7fdaade4e000 ---p 00017000 08:01 393248 /lib/libpthread-2.11.3.so 7fdaade4e000-7fdaade4f000 r--p 00016000 08:01 393248 /lib/libpthread-2.11.3.so 7fdaade4f000-7fdaade50000 rw-p 00017000 08:01 393248 /lib/libpthread-2.11.3.so 7fdaade50000-7fdaade54000 rw-p 00000000 00:00 0 7fdaade54000-7fdaaded4000 r-xp 00000000 08:01 393826 /lib/libm-2.11.3.so 7fdaaded4000-7fdaae0d4000 ---p 00080000 08:01 393826 /lib/libm-2.11.3.so 7fdaae0d4000-7fdaae0d5000 r--p 00080000 08:01 393826 /lib/libm-2.11.3.so 7fdaae0d5000-7fdaae0d6000 rw-p 00081000 08:01 393826 /lib/libm-2.11.3.so 7fdaae0d6000-7fdaae0d8000 r-xp 00000000 08:01 393825 /lib/libdl-2.11.3.so 7fdaae0d8000-7fdaae2d8000 ---p 00002000 08:01 393825 /lib/libdl-2.11.3.so 7fdaae2d8000-7fdaae2d9000 r--p 00002000 08:01 393825 /lib/libdl-2.11.3.so 7fdaae2d9000-7fdaae2da000 rw-p 00003000 08:01 393825 /lib/libdl-2.11.3.so 7fdaae2da000-7fdaae43f000 r-xp 00000000 08:01 525387 /usr/lib/libperl.so.5.10.1 7fdaae43f000-7fdaae63e000 ---p 00165000 08:01 525387 /usr/lib/libperl.so.5.10.1 7fdaae63e000-7fdaae647000 rw-p 00164000 08:01 525387 /usr/lib/libperl.so.5.10.1 7fdaae647000-7fdaae665000 r-xp 00000000 08:01 393819 /lib/ld-2.11.3.so 7fdaae854000-7fdaae859000 rw-p 00000000 00:00 0 7fdaae862000-7fdaae864000 rw-p 00000000 00:00 0 7fdaae864000-7fdaae865000 r--p 0001d000 08:01 393819 /lib/ld-2.11.3.so 7fdaae865000-7fdaae866000 rw-p 0001e000 08:01 393819 /lib/ld-2.11.3.so 7fdaae866000-7fdaae867000 rw-p 00000000 00:00 0 7fff9616d000-7fff9618e000 rw-p 00000000 00:00 0 [stack] 7fff961ff000-7fff96200000 r-xp 00000000 00:00 0 [vdso] ffffffffff600000-ffffffffff601000 r--p 00000000 00:00 0 [vsyscall] dpkg: error processing /var/cache/apt/archives/libc6_2.11.3-4_amd64.deb (--unpack): subprocess new pre-installation script killed by signal (Aborted) Errors were encountered while processing: /var/cache/apt/archives/libc6_2.11.3-4_amd64.deb

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• Apache/passenger/ree doesn't interpret .rb files

  - by Sergey

  I'm trying to get apache + passenger + ree to work. I think I did everything (except for setting up rails env - for now I wanna run just pure ruby) described here: http://rvm.beginrescueend.com/integration/passenger/ But when I try to go to localhost/test.rb it doesn't interpret that file and just download it. I don't know where should I look for mistakes, so here are a few files I think could be relevant: /var/log/apache2/error.log (these 2 lines are repeating) [Mon May 31 23:12:47 2010] [notice] Graceful restart requested, doing restart [Mon May 31 23:12:48 2010] [notice] Apache/2.2.14 (Ubuntu) PHP/5.3.2-1ubuntu4.2 with Suhosin-Patch Phusion_Passenger/2.2.11 configured -- resuming normal operations /etc/apache2/httpd.conf LoadModule passenger_module /home/sergey/.rvm/gems/ree-1.8.7-2010.01/gems/passenger-2.2.11/ext/apache2/mod_passenger.so PassengerRoot /home/sergey/.rvm/gems/ree-1.8.7-2010.01/gems/passenger-2.2.11 PassengerRuby /home/sergey/.rvm/bin/passenger_ruby /var/www/test.rb puts "test"

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• Metro: Understanding the default.js File

  - by Stephen.Walther

  The goal of this blog entry is to describe — in painful detail — the contents of the default.js file in a Metro style application written with JavaScript. When you use Visual Studio to create a new Metro application then you get a default.js file automatically. The file is located in a folder named \js\default.js. The default.js file kicks off all of your custom JavaScript code. It is the main entry point to a Metro application. The default contents of the default.js file are included below: // For an introduction to the Blank template, see the following documentation: // http://go.microsoft.com/fwlink/?LinkId=232509 (function () { "use strict"; var app = WinJS.Application; app.onactivated = function (eventObject) { if (eventObject.detail.kind === Windows.ApplicationModel.Activation.ActivationKind.launch) { if (eventObject.detail.previousExecutionState !== Windows.ApplicationModel.Activation.ApplicationExecutionState.terminated) { // TODO: This application has been newly launched. Initialize // your application here. } else { // TODO: This application has been reactivated from suspension. // Restore application state here. } WinJS.UI.processAll(); } }; app.oncheckpoint = function (eventObject) { // TODO: This application is about to be suspended. Save any state // that needs to persist across suspensions here. You might use the // WinJS.Application.sessionState object, which is automatically // saved and restored across suspension. If you need to complete an // asynchronous operation before your application is suspended, call // eventObject.setPromise(). }; app.start(); })(); There are several mysterious things happening in this file. The purpose of this blog entry is to dispel this mystery. Understanding the Module Pattern The first thing that you should notice about the default.js file is that the entire contents of this file are enclosed within a self-executing JavaScript function: (function () { ... })(); Metro applications written with JavaScript use something called the module pattern. The module pattern is a common pattern used in JavaScript applications to create private variables, objects, and methods. Anything that you create within the module is encapsulated within the module. Enclosing all of your custom code within a module prevents you from stomping on code from other libraries accidently. Your application might reference several JavaScript libraries and the JavaScript libraries might have variables, objects, or methods with the same names. By encapsulating your code in a module, you avoid overwriting variables, objects, or methods in the other libraries accidently. Enabling Strict Mode with “use strict” The first statement within the default.js module enables JavaScript strict mode: 'use strict'; Strict mode is a new feature of ECMAScript 5 (the latest standard for JavaScript) which enables you to make JavaScript more strict. For example, when strict mode is enabled, you cannot declare variables without using the var keyword. The following statement would result in an exception: hello = "world!"; When strict mode is enabled, this statement throws a ReferenceError. When strict mode is not enabled, a global variable is created which, most likely, is not what you want to happen. I’d rather get the exception instead of the unwanted global variable. The full specification for strict mode is contained in the ECMAScript 5 specification (look at Annex C): http://www.ecma-international.org/publications/files/ECMA-ST/ECMA-262.pdf Aliasing the WinJS.Application Object The next line of code in the default.js file is used to alias the WinJS.Application object: var app = WinJS.Application; This line of code enables you to use a short-hand syntax when referring to the WinJS.Application object: for example,  app.onactivated instead of WinJS.Application.onactivated. The WinJS.Application object  represents your running Metro application. Handling Application Events The default.js file contains an event handler for the WinJS.Application activated event: app.onactivated = function (eventObject) { if (eventObject.detail.kind === Windows.ApplicationModel.Activation.ActivationKind.launch) { if (eventObject.detail.previousExecutionState !== Windows.ApplicationModel.Activation.ApplicationExecutionState.terminated) { // TODO: This application has been newly launched. Initialize // your application here. } else { // TODO: This application has been reactivated from suspension. // Restore application state here. } WinJS.UI.processAll(); } }; This WinJS.Application class supports the following events: · loaded – Happens after browser DOMContentLoaded event. After this event, the DOM is ready and you can access elements in a page. This event is raised before external images have been loaded. · activated – Triggered by the Windows.UI.WebUI.WebUIApplication activated event. After this event, the WinRT is ready. · ready – Happens after both loaded and activated events. · unloaded – Happens before application is unloaded. The following default.js file has been modified to capture each of these events and write a message to the Visual Studio JavaScript Console window: (function () { "use strict"; var app = WinJS.Application; WinJS.Application.onloaded = function (e) { console.log("Loaded"); }; WinJS.Application.onactivated = function (e) { console.log("Activated"); }; WinJS.Application.onready = function (e) { console.log("Ready"); } WinJS.Application.onunload = function (e) { console.log("Unload"); } app.start(); })(); When you execute the code above, a message is written to the Visual Studio JavaScript Console window when each event occurs with the exception of the Unload event (presumably because the console is not attached when that event is raised).   Handling Different Activation Contexts The code for the activated handler in the default.js file looks like this: app.onactivated = function (eventObject) { if (eventObject.detail.kind === Windows.ApplicationModel.Activation.ActivationKind.launch) { if (eventObject.detail.previousExecutionState !== Windows.ApplicationModel.Activation.ApplicationExecutionState.terminated) { // TODO: This application has been newly launched. Initialize // your application here. } else { // TODO: This application has been reactivated from suspension. // Restore application state here. } WinJS.UI.processAll(); } }; Notice that the code contains a conditional which checks the Kind of the event (the value of e.detail.kind). The startup code is executed only when the activated event is triggered by a Launch event, The ActivationKind enumeration has the following values: · launch · search · shareTarget · file · protocol · fileOpenPicker · fileSavePicker · cacheFileUpdater · contactPicker · device · printTaskSettings · cameraSettings Metro style applications can be activated in different contexts. For example, a camera application can be activated when modifying camera settings. In that case, the ActivationKind would be CameraSettings. Because we want to execute our JavaScript code when our application first launches, we verify that the kind of the activation event is an ActivationKind.Launch event. There is a second conditional within the activated event handler which checks whether an application is being newly launched or whether the application is being resumed from a suspended state. When running a Metro application with Visual Studio, you can use Visual Studio to simulate different application execution states by taking advantage of the Debug toolbar and the new Debug Location toolbar.  Handling the checkpoint Event The default.js file also includes an event handler for the WinJS.Application checkpoint event: app.oncheckpoint = function (eventObject) { // TODO: This application is about to be suspended. Save any state // that needs to persist across suspensions here. You might use the // WinJS.Application.sessionState object, which is automatically // saved and restored across suspension. If you need to complete an // asynchronous operation before your application is suspended, call // eventObject.setPromise(). }; The checkpoint event is raised when your Metro application goes into a suspended state. The idea is that you can save your application data when your application is suspended and reload your application data when your application resumes. Starting the Application The final statement in the default.js file is the statement that gets everything going: app.start(); Events are queued up in a JavaScript array named eventQueue . Until you call the start() method, the events in the queue are not processed. If you don’t call the start() method then the Loaded, Activated, Ready, and Unloaded events are never raised. Summary The goal of this blog entry was to describe the contents of the default.js file which is the JavaScript file which you use to kick off your custom code in a Windows Metro style application written with JavaScript. In this blog entry, I discussed the module pattern, JavaScript strict mode, handling first chance exceptions, WinJS Application events, and activation contexts.

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• Cyrus on CentOS with sasl / pam / ldap

  - by Oscar

  SASL/PAM/LDAP is driving me crazy... that's what I read a lot when googling for problems in this area, and what I experience myself :-S I'm trying to get Cyrus imap working for virtual hosting on CentOS with this authorisation backend and really don't know what's happening. In saslauthd I configured the LDAP search filter to use, but it looks like pam completely ignores it. Here's what I do for testing (done more tests but all with similar results): [root@testserv ~]# imtest -u [email protected] -a [email protected] WARNING: no hostname supplied, assuming localhost S: * OK [CAPABILITY IMAP4 IMAP4rev1 LITERAL+ ID STARTTLS] testserv. Cyrus IMAP4 v2.3.7-Invoca-RPM-2.3.7-7.el5_6.4 server ready C: C01 CAPABILITY S: * CAPABILITY IMAP4 IMAP4rev1 LITERAL+ ID STARTTLS ACL RIGHTS=kxte QUOTA MAILBOX-REFERRALS NAMESPACE UIDPLUS NO_ATOMIC_RENAME UNSELECT CHILDREN MULTIAPPEND BINARY SORT SORT=MODSEQ THREAD=ORDEREDSUBJECT THREAD=REFERENCES ANNOTATEMORE CATENATE CONDSTORE IDLE LISTEXT LIST-SUBSCRIBED X-NETSCAPE URLAUTH S: C01 OK Completed Please enter your password: C: L01 LOGIN [email protected] {6} S: + go ahead C: <omitted> S: L01 NO Login failed: authentication failure Authentication failed. generic failure Security strength factor: 0 C: Q01 LOGOUT * BYE LOGOUT received Q01 OK Completed Connection closed. The LDAP entry does exist (and so does the mailbox in Cyrus): [root@testserv ~]# ldapsearch -WxD cn=Manager,o=mydomain,c=com [email protected] Enter LDAP Password: # extended LDIF # # LDAPv3 # base <> with scope subtree # filter: [email protected] # requesting: ALL # # myuser, accounts, testserv.mydomain.com, mydomain, com dn: uid=myuser,ou=accounts,dc=testserv.mydomain.com,o=mydomain,c=com objectClass: top objectClass: person objectClass: organizationalPerson objectClass: inetOrgPerson objectClass: posixAccount objectClass: shadowAccount uidNumber: 16 uid: myuser gidNumber: 5 givenName: My sn: Name mail: [email protected] cn: My Name userPassword:: dYN5ebB0fXhNRn1pZllhRnJX7Uk= shadowLastChange: 15176 homeDirectory: /dev/null # search result search: 2 result: 0 Success # numResponses: 2 # numEntries: 1 This is what I get in /var/log/messages Aug 2 04:00:11 testserv cyrus/imap[12514]: auxpropfunc error invalid parameter supplied Aug 2 04:00:19 testserv saslauthd[5926]: do_auth : auth failure: [[email protected]] [service=imap] [realm=testserv.mydomain.com] [mech=pam] [reason=PAM auth error] ... /var/adm/auth.log Aug 2 04:00:11 testserv cyrus/imap[12514]: auxpropfunc error invalid parameter supplied Aug 2 04:00:11 testserv cyrus/imap[12514]: _sasl_plugin_load failed on sasl_auxprop_plug_init for plugin: ldapdb Aug 2 04:00:19 testserv saslauthd[5926]: DEBUG: auth_pam: pam_authenticate failed: User not known to the underlying authentication module Aug 2 04:00:19 testserv saslauthd[5926]: do_auth : auth failure: [[email protected]] [service=imap] [realm=testserv.mydomain.com] [mech=pam] [reason=PAM auth error] (AFAIK I can ignore the auxprop msg) ... and /var/log/slapd.log: Aug 2 04:00:19 testserv slapd[5968]: conn=61 fd=27 ACCEPT from IP=127.0.0.1:51403 (IP=0.0.0.0:389) Aug 2 04:00:19 testserv slapd[5968]: conn=61 op=0 BIND dn="" method=128 Aug 2 04:00:19 testserv slapd[5968]: conn=61 op=0 RESULT tag=97 err=0 text= Aug 2 04:00:19 testserv slapd[5968]: conn=61 op=1 SRCH base="o=mydomain,c=com" scope=2 deref=0 filter="([email protected])" Aug 2 04:00:19 testserv slapd[5968]: conn=61 op=1 SEARCH RESULT tag=101 err=0 nentries=0 text= Aug 2 04:00:19 testserv slapd[5968]: conn=61 op=2 UNBIND Aug 2 04:00:19 testserv slapd[5968]: conn=61 fd=27 closed These are the settings in In /etc/imapd.conf: sasl_mech_list: PLAIN LOGIN sasl_pwcheck_method: saslauthd ## sasl_auxprop_plugin: sasldb sasl_auto_transition: no and my sasl config: [root@testserv ~]# cat /etc/sysconfig/saslauthd # Directory in which to place saslauthd's listening socket, pid file, and so # on. This directory must already exist. SOCKETDIR=/var/run/saslauthd # Mechanism to use when checking passwords. Run "saslauthd -v" to get a list # of which mechanism your installation was compiled with the ablity to use. MECH=pam # Additional flags to pass to saslauthd on the command line. See saslauthd(8) # for the list of accepted flags. FLAGS="-c -r -O /etc/saslauthd.conf" [root@testserv ~]# cat /etc/saslauthd.conf ldap_servers: ldap://127.0.0.1/ ldap_search_base: dc=%d,o=mydomain,c=com ldap_auth_method: bind #ldap_filter: (|(uid=%u)((&(mail=%u@%d)(accountStatus=active))) ldap_filter: (&(mail=%u@%d)(accountStatus=active)) ldap_debug: 1 ldap_version: 3 The accountStatus=active is not in ldap yet, but that doesn't make a difference since I don't see it in the filter... that's not the reason for the failure. The weird thing is, I do get an error when I rename or remove /etc/saslauthd.conf, but when the file exists it seems happily ignored... The filter in slapd.log seems to be taken from /etc/ldap.conf. Apart from some timers, that only contains: host 127.0.0.1 base o=mydomain,c=com pam_login_attribute mail Outcommenting the pam_login_attribute results in this filter in slapd.log: filter="([email protected])" Pam-imap looks like this: [root@testserv ~]# cat /etc/pam.d/imap auth required pam_ldap.so debug account required pam_ldap.so debug #auth sufficient pam_unix.so likeauth nullok #auth sufficient pam_ldap.so use_first_pass #auth required pam_deny.so #account sufficient pam_unix.so #account sufficient pam_ldap.so The outcommented stuff is because I don't have the cyrus admin user in Ldap; that's a Linux user. That works fine when uncommented, but I still need to play around with that a little and first I wanna get imap working. Finally nsswitch: [root@testserv ~]# cat /etc/nsswitch.conf # # /etc/nsswitch.conf # # An example Name Service Switch config file. This file should be # sorted with the most-used services at the beginning. # # The entry '[NOTFOUND=return]' means that the search for an # entry should stop if the search in the previous entry turned # up nothing. Note that if the search failed due to some other reason # (like no NIS server responding) then the search continues with the # next entry. # # Legal entries are: # # nisplus or nis+ Use NIS+ (NIS version 3) # nis or yp Use NIS (NIS version 2), also called YP # dns Use DNS (Domain Name Service) # files Use the local files # db Use the local database (.db) files # compat Use NIS on compat mode # hesiod Use Hesiod for user lookups # [NOTFOUND=return] Stop searching if not found so far # # To use db, put the "db" in front of "files" for entries you want to be # looked up first in the databases # # Example: #passwd: db files nisplus nis #shadow: db files nisplus nis #group: db files nisplus nis passwd: compat ldap group: compat ldap shadow: compat ldap hosts: files dns bootparams: nisplus [NOTFOUND=return] files ethers: files netmasks: files networks: files protocols: files rpc: files services: files netgroup: nisplus publickey: nisplus automount: files nisplus aliases: files nisplus Any info where to start looking will be greatly appreciated! Thnx in advance

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• MySQL - Why would SHOW SLAVE HOSTS cause a binlog dump?

  - by Rory McCann

  We're getting loads of binlog files in our MySQL 5.0.x. We have a normal master/slave replication thing going with 1 master, 1 slave. Looking at /var/log/mysql.log, nearly 90% of the time the replicator connects and does a SHOW SLAVE HOSTS causes a bin log dump. For example: 7020 Query SHOW SLAVE HOSTS 7020 Binlog Dump Log: 'mysql-bin.029634' Pos: 13273 However when I do a SHOW SLAVE HOSTS on the mysql myself, I get no results. Occasionally when the replicator does a SHOW SLAVE HOSTS, mysql will hang for hours. I see nothing in the /var/log/syslog at the same time... What's going on here? How can I debug this more? For the record the MySQL master and slave servers are ubuntu dapper.

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• MVC OnActionExecuting to Redirect

  - by Aligned

  Originally posted on: http://geekswithblogs.net/Aligned/archive/2014/08/12/mvc-onactionexecuting-to-redirect.aspxI recently had the following requirements in an MVC application: Given a new user that still has the default password When they first login Then the user must change their password and optionally provide contact information I found that I can override the OnActionExecuting method in a BaseController class.public class BaseController : Controller { [Inject] public ISessionManager SessionManager { get; set; } protected override void OnActionExecuting(ActionExecutingContext filterContext) { // call the base method first base.OnActionExecuting(filterContext); // if the user hasn't changed their password yet, force them to the welcome page if (!filterContext.RouteData.Values.ContainsValue("WelcomeNewUser")) { var currentUser = this.SessionManager.GetCurrentUser(); if (currentUser.FusionUser.IsPasswordChangeRequired) { filterContext.Result = new RedirectResult("/welcome"); } } } } Better yet, you can use an ActionFilterAttribute (and here) and apply the attribute to the Base or individual controllers./// <summary> /// Redirect the user to the WelcomePage if the FusionUser.IsPasswordChangeRequired is true; /// </summary> public class WelcomePageRedirectActionFilterAttribute : ActionFilterAttribute { [Inject] public ISessionManager SessionManager { get; set; } public override void OnActionExecuting(ActionExecutingContext actionContext) { base.OnActionExecuting(actionContext); // if the user hasn't changed their password yet, force them to the welcome page if (actionContext.RouteData.Values.ContainsValue("WelcomeNewUser")) { return; } var currentUser = this.SessionManager.GetCurrentUser(); if (currentUser.FusionUser.IsPasswordChangeRequired) { actionContext.Result = new RedirectResult("/welcome"); } } }  [WelcomePageRedirectActionFilterAttribute] public class BaseController : Controller { ... } The requirement is now met.

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• git networking for small team

  - by takeshin

  I'm trying to set up git for my programming team. My setup is: 1. example.com (Ubuntu server) IP: 192.168.1.2 (public: xxx.yyy.yyy.zzz) main git repository in /var/www/testgit user: mot (root) 2. host2, Ubuntu IP: 192.168.1.101 git clone of main repo in ~/public_html/testgit1 user: nairda 3. host3, Ubuntu IP: 192.168.1.102 git clone of main repo in ~/www/testgit2 user: mot 4. host4, Windows Vista, Samba, msysgit IP: 192.168.1.103 git clone of main repo in c:\shared\testgit3 user: ataga I start a new main repo: cd /var/www/testgit1 git init Now, a lot of questions: Which groups and users do I have to create? How to set up required ssh keys? (I'm playing with gitosis, but with no success by now.) How to make the main repo visible to other hosts? How to clone this repo on the hosts? How to pull changes from others to main repo?

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• How to deny the web access to some files?

  - by Strae

  I need to do an operation a bit strange. First, i run on Debian, apache2 (which 'runs' as user www-data) So, I have simple text file with .txt ot .ini, or whatever extension, doesnt matter. These files are located in subfolders with a structure like this: www.example.com/folder1/car/foobar.txt www.example.com/folder1/cycle/foobar.txt www.example.com/folder1/fish/foobar.txt www.example.com/folder1/fruit/foobar.txt therefore, the file name always the same, ditto for the 'hierarchy', just change the name of the folder: /folder-name-static/folder-name-dinamyc/file-name-static.txt What I should do is (I think) relatively simple: I must be able to read that file by programs on the server (python, php for example), but if I try to retrieve the file contents by broswer (digiting the url www.example.com/folder1/car/foobar.txt, or via cUrl, etc..) I must get a forbidden error, or whatever, but not access the file. It would also be nice that even accessing those files via FTP are 'hidden', or anyway couldnt be downloaded (at least that I use with the ftp root and user data) How can I do? I found this online, be put in the file .htaccess: <Files File.txt> Order allow, deny Deny from all </ Files> It seems to work, but only if the file is in the web root (www.example.com / myfile.txt), and not in subfolders. Moreover, the folders in the second level (www.example.com/folder1/fruit/foobar.txt) will be dinamycally created.. I would like to avoid having to change .htaccess file from time to time. It is possible to create a rule, something like that, that goes for all files with given name, which is on www.example.com/folder-name-static/folder-name-dinamyc/file-name-static.txt, where those parts are allways the same, just that one change ? EDIT: As Dave Drager said, i could semplify this keeping those file outside the web accessible directory. But those directory's will contain others files too, images, and stuff used by my users, so i'm simply try to not have a duplicate folders system, like: /var/www/vhosts/example.com/httpdocs/folder1/car/[other folders and files here] /var/www/vhosts/example.com/httpdocs/folder1/cycle/[other folders and files here] /var/www/vhosts/example.com/httpdocs/folder1/fish/[other folders and files here] //and, then for the 'secrets' files: /folder1/data/car/foobar.txt /folder1/data/cycle/foobar.txt /folder1/data/fish/foobar.txt

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• Apache2 ignores ServerAlias

  - by Galen

  the www versions of all my sites work. the non-www version don't work. All non-www versions go to my default vhost (galengrover.com) Here are the first 2 virtual hosts in httpd.conf. ServerName galengrover.com NameVirtualHost *:80 <VirtualHost *:80> ServerAdmin [email protected] DocumentRoot /var/www/sites/galengrover.com/html ServerName www.galengrover.com ServerAlias galengrover.com </VirtualHost> <VirtualHost *:80> ServerAdmin [email protected] DocumentRoot /var/www/sites/skatevideosonline.net/html ServerName www.skatevideosonline.net ServerAlias skatevideosonline.com </VirtualHost> Im clueless. Thanks

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• Pass Extra Parameters to JavaScript Callback Function

  - by BRADINO

  Here is a simple example of a function that takes a callback function as a parameter. query.send(handleQueryResponse); function handleQueryResponse(response){      alert('Processing...'); } If you wanted to pass extra variables to the callback function, you can do it like this. var param1 = 'something'; var param2 ='something else'; query.send(function(response) { handleQueryResponse(response, param1, param2) }); function handleQueryResponse(response,param1,param2){      alert('Processing...');      alert(param1);      alert(param2); }

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• xf86OpenConsole: Cannot open /dev/tty0 (No such file or directory)

  - by mazgalici

  root@mazgalici:~# startx X.Org X Server 1.7.6 Release Date: 2010-03-17 X Protocol Version 11, Revision 0 Build Operating System: Linux 2.6.24-28-server i686 Ubuntu Current Operating System: Linux mazgalici 2.6.18-194.26.1.el5.028stab079.2PAE #1 SMP Fri Dec 17 19:34:22 MSK 2010 i686 Kernel command line: quiet Build Date: 10 November 2010 11:25:26AM xorg-server 2:1.7.6-2ubuntu7.4 (For technical support please see ) Current version of pixman: 0.16.4 Before reporting problems, check to make sure that you have the latest version. Markers: (--) probed, (**) from config file, (==) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (??) unknown. (==) Log file: "/var/log/Xorg.0.log", Time: Tue Jan 11 01:28:48 2011 (==) Using config directory: "/usr/lib/X11/xorg.conf.d" Fatal server error: xf86OpenConsole: Cannot open /dev/tty0 (No such file or directory) Please consult the The X.Org Foundation support at http://wiki.x.org for help. Please also check the log file at "/var/log/Xorg.0.log" for additional information. ddxSigGiveUp: Closing log

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• Apache gives empty reply

  - by Jorge Bernal

  It happens randomly, and only on moodle installations. Apache don't add a line in the logs when this happens, and I don't know where to look. koke@escher:~/Code/eboxhq/moodle[master]$ curl -I http://training.ebox-technologies.com/login/signup.php?course=WNA001 curl: (52) Empty reply from server koke@escher:~/Code/eboxhq/moodle[master]$ curl -I http://training.ebox-technologies.com/login/signup.php?course=WNA001 HTTP/1.1 200 OK The apache conf is quite straightforward and works perfectly in the other vhosts <VirtualHost *:80> ServerAdmin [email protected] DocumentRoot /srv/apache/training.ebox-technologies.com/htdocs ServerName training.eboxhq.com ErrorLog /var/log/apache2/training.ebox-technologies.com-error.log CustomLog /var/log/apache2/training.ebox-technologies.com-access.log combined <FilesMatch "\.(ico|gif|jpe?g|png|js|css)$"> ExpiresActive On ExpiresDefault "access plus 1 week" Header add Cache-Control public </FilesMatch> </VirtualHost> Using apache 2.2.9 php 5.2.6 and moodle 1.9.5+ (Build: 20090722) Any ideas welcome :)

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• How do I install the newest Flash beta for Minefield on 64-bit Ubuntu?

  - by Øsse

  Hi, I'm using a fully updated Ubuntu 10.10 64-bit which is pretty much bog standard except I'm using Minefield from the Mozilla daily PPA in addition to Firefox as provided by Ubuntu. I want to try the newest beta of Flash (10.3 as of writing). The installation instructions simply say "drop libflashplayer.so into the plugin folder of your browser". This the 32-bit version. Currently I'm using Flash as provided by the package flashplugin-installer (ver. 10.2.152.27ubuntu0.10.10.1). Going to about:plugins in Minefield/Firefox says the version of Flash I'm running is 10.2 r152 and the file responsible is npwrapper.libflashplayer.so. I have two files with that name on my system. One is /usr/share/ubufox/plugins/npwrapper.libflashplayer.so which is a broken link to /usr/lib/flashplugin-installer/npwrapper.libflashplayer.so. The other is /var/lib/flashplugin-installer/npwrapper.libflashplayer.so (note var instead of usr). I also have a file simply called libflashplayer.so in /usr/lib/flashplugin-installer/. So it seems Firefox/Minefield gets its Flash plugin from a file that doesn't exist, and replacing libflashplayer.so with the one in the archive from Adobe has no effect. Since I want to try the 32-bit version I have to use the wrapper. The only way I know how is through the flashplugin-installer package. How would I go about installing the newest 32-bit beta Flash if possible at all? And where is "the plugin folder of my browser"?

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• Google Analytics setting cookies on static content despite being on entirely separate domain

  - by Donald Jenkins

  I recently decided to comply with the YSlow recommendation that static content is hosted on a cookieless domain. As I already use the root of my domain (donaldjenkins.com) to host my website—on which Google Analytics sets a few cookies—that meant I had to move the CNAME URL for the CDN serving the static files from cdn.donaldjenkins.com to an entirely separate, dedicated domain. I purchased cdn.dj (yes, it's a real Djibouti domain name), hosted the files on the root (which contains nothing else, other than a robots.txt file) and set a CNAME of e.cdn.dj for the CDN. This setup works, but I was rather surprised to find that YSlow was still flagging the static files for not being cookie-free: here's a screenshot: The cdn.djdomain was new, and was never used for anything other than hosting these static files. Running httpfox on the site shows the _utma and _utmz Google Analytics cookies are being set on the static files listed above—despite their being hosted on an entirely separate, dedicated domain. Here's my Google Analytics code: //Google Analytics tracking code var _gaq=[['_setAccount','UA-5245947-5'],['_trackPageview']]; (function(d,t){var g=d.createElement(t),s=d.getElementsByTagName(t)[0]; g.src=('https:'==location.protocol?'//ssl':'//www')+'.google-analytics.com/ga.js'; s.parentNode.insertBefore(g,s)}(document,'script')); // [END] Google Analytics tracking code I'm not obsessing about this issue—I know it's not really affecting server performance—but I'd like to just understand what is causing it not to go away...

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