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• Why my Ldirectord check multiple times on read server every interval?

  - by garconcn

  I have a Ldirectord server and two real servers. My ldirectord used to check the request page on real server once in every interval, but now I found that it check four times. I have monitored the log on both real servers, they have the same problem. Here is my ldirectord configuration: checktimeout=10 checkinterval=5 autoreload=yes logfile="/var/log/ldirectord.log" quiescent=no virtual=192.168.1.100:80 fallback=127.0.0.1:80 real=192.168.1.10:80 gate real=192.168.1.20:80 gate service=http request="lb.html" receive="still alive" scheduler=sh persistent=60 protocol=tcp checktype=negotiate Ldirectord will connect to each real server once every 5 seconds (checkinterval) and request 192.168.0.10:80/test.html (real/request). The access log in real server: 192.168.1.100 - - [13/Jun/2012:10:36:44 -0700] "GET /lb.html HTTP/1.1" 200 12 "-" "libwww-perl/5.805" 192.168.1.100 - - [13/Jun/2012:10:36:44 -0700] "GET /lb.html HTTP/1.1" 200 12 "-" "libwww-perl/5.805" 192.168.1.100 - - [13/Jun/2012:10:36:44 -0700] "GET /lb.html HTTP/1.1" 200 12 "-" "libwww-perl/5.805" 192.168.1.100 - - [13/Jun/2012:10:36:44 -0700] "GET /lb.html HTTP/1.1" 200 12 "-" "libwww-perl/5.805" 192.168.1.100 - - [13/Jun/2012:10:36:49 -0700] "GET /lb.html HTTP/1.1" 200 12 "-" "libwww-perl/5.805" 192.168.1.100 - - [13/Jun/2012:10:36:49 -0700] "GET /lb.html HTTP/1.1" 200 12 "-" "libwww-perl/5.805" 192.168.1.100 - - [13/Jun/2012:10:36:49 -0700] "GET /lb.html HTTP/1.1" 200 12 "-" "libwww-perl/5.805" 192.168.1.100 - - [13/Jun/2012:10:36:49 -0700] "GET /lb.html HTTP/1.1" 200 12 "-" "libwww-perl/5.805" 192.168.1.100 - - [13/Jun/2012:10:36:54 -0700] "GET /lb.html HTTP/1.1" 200 12 "-" "libwww-perl/5.805" 192.168.1.100 - - [13/Jun/2012:10:36:54 -0700] "GET /lb.html HTTP/1.1" 200 12 "-" "libwww-perl/5.805" 192.168.1.100 - - [13/Jun/2012:10:36:54 -0700] "GET /lb.html HTTP/1.1" 200 12 "-" "libwww-perl/5.805" 192.168.1.100 - - [13/Jun/2012:10:36:54 -0700] "GET /lb.html HTTP/1.1" 200 12 "-" "libwww-perl/5.805"

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• How to access a port via OpenVpn only

  - by Andy M

  I've set up an openvpn server alongside an apache website that can only be accessed on port 8100 on the same machine. My /etc/openvpn/server.conf file looks like this: port 1194 proto tcp dev tun ca ./easy-rsa2/keys/ca.crt cert ./easy-rsa2/keys/server.crt key ./easy-rsa2/keys/server.key # This file should be kept secret dh ./easy-rsa2/keys/dh1024.pem # Diffie-Hellman parameter server 10.8.0.0 255.255.255.0 ifconfig-pool-persist ipp.txt # make sure clients can still connect to the internet push "redirect-gateway def1 bypass-dhcp" keepalive 10 120 comp-lzo persist-key persist-tun status openvpn-status.log verb 3 Now I tried to let only clients connected to the vpn network access the website on apache via port 8100. So I defined a few iptables rules: #!/bin/sh # My system IP/set ip address of server SERVER_IP="192.168.0.2" # Flushing all rules iptables -F iptables -X # Setting default filter policy iptables -P INPUT DROP iptables -P OUTPUT DROP iptables -P FORWARD DROP # Allow incoming access to port 8100 from OpenVPN 10.8.0.1 iptables -A INPUT -i tun0 -p tcp --dport 80 -m state --state NEW,ESTABLISHED -j ACCEPT iptables -A OUTPUT -o tun0 -p tcp --sport 80 -m state --state ESTABLISHED -j ACCEPT # outgoing http iptables -A OUTPUT -o tun0 -p tcp --dport 80 -m state --state NEW,ESTABLISHED -j ACCEPT iptables -A INPUT -i tun0 -p tcp --sport 80 -m state --state ESTABLISHED -j ACCEPT Now when I connect to the server from my client computer and try to access the website on 192.168.0.2:8100, my browser can't open it. Will I have to forward traffic from tun0 to eth0? Or is there anything else I'm missing?

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• How to have a shell script available everywhere I SSH to

  - by aib

  I have a shell script which I simply cannot do without: bar from Theiling Online I use SSH a lot and on a variety of *nix servers. However, I am not a system administrator and usually don't have the time or privileges to install it on every server I connect to. It is apparently a very portable sh script and has command line options to export itself as a shell function, which got me thinking: Could I use one of OpenSSH's subjectively obscure features to export it everywhere I go? My first thought was to assign the source to an environment variable like BAR = "cat -v" and then execute it on the other side as `$BAR`, but 1) I can't even get the cat example to to work locally, 2) I don't know how to put the script's actual multiline source into an environment variable and 3) I have yet to see a machine with PermitUserEnvironment enabled. I guess I could even do with an ssh option to write a file called ~/bar at logon, but a more volatile solution would be better. Calling wget http://.../bar at logon would be unacceptable. Any ideas? P.S. Putty-specific solutions, though I doubt any would exist, are also fine.

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• Why is MySQL table_cache full but never used

  - by Jeremy Clarke

  I have been using the tuning-primer.sh script to tune my my.cnf settings. I have most things working well but the part about TABLE CACHE makes no sense: TABLE CACHE Current table_cache value = 900 tables. You have a total of 0 tables You have 900 open tables. Current table_cache hit rate is 1% , while 100% of your table cache is in use. You should probably increase your table_cache When I do SHOW STATUS; I get the following table-related numbers: Open_tables = 900 Opened_tables = 0 It seems like something is going wrong. I have some extra memory I could use on increasing the table_cache size, but my sense is that the 900 tables already available aren't doing anything, and increasing it will just waste more energy. Why might this be happening? Are there other settings that could cause all my table_cache slots to be used even though there are no hits to them? I have 150 max connections and probably no more than 4 tables per join, FWIW. Here is the tuner script output for temp tables, which I've also been tuning: TEMP TABLES Current max_heap_table_size = 90 M Current tmp_table_size = 90 M Of 11032358 temp tables, 40% were created on disk Perhaps you should increase your tmp_table_size and/or max_heap_table_size to reduce the number of disk-based temporary tables. Note! BLOB and TEXT columns are not allow in memory tables. If you are using these columns raising these values might not impact your ratio of on disk temp tables.

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• mod_fcgi produces random 500 Errors

  - by DmitrySemenov

  php 5.4.7 via mod_fcgi when I run the site sometimes it works, sometimes it crashed with 500 Internal Error, this is what I see in error.log everytime I run the script [Mon Sep 24 18:50:43 2012] [warn] [client 68.231.194.198] (104)Connection reset by peer: mod_fcgid: error reading data from FastCGI server [Mon Sep 24 18:50:43 2012] [error] [client 68.231.194.198] Premature end of script headers: api.php any ideas? vhost config: <VirtualHost :80> ServerAdmin [email protected] DocumentRoot "/home/www/sites/test.com/html/development" ServerName test.com ServerAlias www.test.com ErrorLog "/home/www/sites/test.com/logs/error_log" CustomLog "/home/www/sites/test.com/logs/access_log" common <IfModule mod_fcgid.c> <Directory /home/www/sites/test.com/html/development> Options +ExecCGI AllowOverride All AddHandler fcgid-script .php FCGIWrapper /home/www/php-fcgi-scripts/php-fcgi-starter .php Order allow,deny Allow from all </Directory> FcgidMaxRequestLen 1073741824 </VirtualHost> fcgi.d conf LoadModule fcgid_module modules/mod_fcgid.so # Use FastCGI to process .fcg .fcgi & .fpl scripts AddHandler fcgid-script fcg fcgi fpl # Sane place to put sockets and shared memory file FcgidIPCDir /var/run/mod_fcgid FcgidProcessTableFile /var/run/mod_fcgid/fcgid_shm IdleTimeout 300 BusyTimeout 300 ProcessLifeTime 7200 IPCConnectTimeout 300 IPCCommTimeout 7200 PHP_Fix_Pathinfo_Enable 1 php-fcgi-starter.php #!/bin/sh PHP_CGI=/usr/local/php547/bin/php-cgi PHP_INI=/etc/php547-fastcgi.ini export PHP_FCGI_TIMEOUT=1200 #export PHP_FCGI_CHILDREN=6 export PHP_FCGI_MAX_REQUESTS=1000 exec $PHP_CGI -c $PHP_INI

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• Doing arithmetic and passing it to the next command

  - by neurolysis

  I know how to do this in /bin/sh, but I'm struggling a bit in Windows. I know you can do arithmetic on 32-bit signed integers with SET /a 2+2 4 But how do I pass this to the next command? For example, the process I want to perform is as follows. Consumer editions of Windows have no native automated sleep function (I believe?) -- the best way to perform a sleep is to use PING in association with the -n switch to get that many seconds, minus one, of sleep. The following command is effective for a silent sleep: PING localhost -n 3 > NUL But I want to alias this into a sleep command. I'd like to have it elegant so that you enter the actual number of seconds you want to sleep after the command, right now I can do DOSKEY SLEEP=PING 127.0.0.1 -n $1 > NUL Which works, but it's always 1 second less than your input, so if you wanted to sleep for one second you would have to use the command SLEEP 2. That's not exactly ideal. Is there some way for me to pass the arithmetic of $1+1 and pass it on to the next command in Windows? I assume there is some way of using STDOUT...

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• Symbolic link modification for HP unix

  - by kalpesh

  Hi David Zaslavsky, Recently i was working on modifying the Symbolic links ... for a particular files.. while searching on internet i saw your post ... I am trying to use this script which you had posted .. find /home/user/public_html/qa/ -type l \ -lname '/home/user/public_html/dev/*' -printf \ 'ln -nsf $(readlink %p|sed s/dev/qa/) $(echo %p|sed s/dev/qa/)\n'\ script.sh SO i tried to modify your script for my problem .. in Hp unix env.. but it seems that the -lname command does not works for HP unix. do you know something equivalent that i can use ... Just to give you and idea of my problem ... I want to change all the symbolic links inside a particular folder .. New Symbolic link -- /base/testusr/scripts Old Symbolic link -- /base/produsr/scripts Now folder "A" contains more than 100 different files having soft links which points to this path -- /base/produsr/scripts But what I want is that the files inside folder A to point to this soft link --/base/testusr/scripts I am trying to achieve in Hp unix ... would really appreciate your help on this ...

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• Setting XFCE terminal PS1 value and making it permanent

  - by Matt

  I'm trying to add the value PS1='\u@\h: \w\$ ' to my terminal in XFCE. I added the line to (what I think is) the correct area in /etc/profile. The relevant segment is: # Set a default shell prompt: #PS1='`hostname`:`pwd`# ' PS1='\u@\h: \w\$ ' if [ "$SHELL" = "/bin/pdksh" ]; then # PS1='! $ ' PS1='\u@\h: \w\$ ' elif [ "$SHELL" = "/bin/ksh" ]; then # PS1='! ${PWD/#$HOME/~}$ ' PS1='\u@\h: \w\$ ' elif [ "$SHELL" = "/bin/zsh" ]; then # PS1='%n@%m:%~%# ' PS1='\u@\h: \w\$ ' elif [ "$SHELL" = "/bin/ash" ]; then # PS1='$ ' PS1='\u@\h: \w\$ ' else PS1='\u@\h: \w\$ ' fi Most of that was already there, I just commented out the existing value and added the one I want. By manually opening the terminal and doing . profile, I can load these values, but they don't stick - I close the terminal and reopen, and I'm back to sh-4.1$. Maybe I'm doing this in the wrong place, but how can I make that value stick? All the info I've found on google is Fedora/Ubuntu-specific. I use Slackware. Any help on this matter would be greatly appreciated.

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• setting the PATH for Git (not for me)

  - by Iain

  Hi, I'm running OSX 10.6.5 with Git 1.7.1 I have git installed in a non-standard location (though that really should be the standard on a mac;-) in /Library/Frameworks/Git.framework. My own PATH is set fine, git works fine, until... I set up a pre-commit hook with a Ruby script: $ git commit -m "added some Yard documentation" .git/hooks/pre-commit: line 1: #!/usr/bin/env: No such file or directory The pre-commit.sample runs ok, so it appears that git can't find /usr/bin/env, or much else as I've tried shebanging it directly to ruby etc. Just /bin/sh is ok. So, where does Git get it's PATH? because it's not using mine or this wouldn't be happening. And more to the point, how do I get it to see /usr/bin/env ? I've tested the ruby script already, it works. Just to add: $ cat /etc/paths /usr/bin /bin /usr/sbin /sbin /usr/local/bin $ cat /etc/paths.d/git /Library/Frameworks/Git.framework/Programs The first few lines of the Ruby script (which runs via ./pre-commit or ruby pre-commit) #!/usr/bin/env ruby -wKU class String def expand_path File.expand_path self end def parent_dir File.dirname self.expand_path end end

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• User permissions linux. (proftpd / nginx)

  - by user55745

  I've been having a complete nightmare trying to configure proftpd. I've got proftp server working with an sql database. However I want to have any files uploaded able to viewed by the webserver running on the same box. The folders get created in /var/tmp/ as rwx------ 2 ftpuser ftpgroup 4096 Oct 8 20:35 50730c4346512 drwx------ 2 ftpuser ftpgroup 4096 Oct 8 20:38 50730f3a811ca I've tried adding www-data to group with the following usermod -g www-data ftpuser But this doesn't allow the web server access. In proftpd.conf I have the following umask set Umask 0022 It doesn't seem to make a difference what I set that value to. /etc/group (sure I've messed up one of these two but I'm getting desperate) ftpgroup:x:2001:www-data www-data:x:33:ftpgroup /etc/passwd www-data:x:33:33:www-data:/var/www:/bin/sh proftpd:x:108:65534::/var/run/proftpd:/bin/false ftp:x:109:65534::/srv/ftp:/bin/false ftpuser:x:2001:33:proftpd user www-data:/bin/null:/bin/false The ftpuser table in the database has uid / gid set to 2oo1 for both. I'm going absolutely crazy trying to solve this any help would be greatly appreciated. p.s Also, although if I manually connect to the ftp server I can upload files via FileZilla. Although this isn't working for the web-camera, although there is talky talky going on between the server and the camera.

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• Is this a good starting point for iptables in Linux?

  - by sbrattla

  Hi, I'm new to iptables, and i've been trying to put together a firewall which purpose is to protect a web server. The below rules are the ones i've put together so far, and i would like to hear if the rules makes sense - and wether i've left out anything essential? In addition to port 80, i also need to have port 3306 (mysql) and 22 (ssh) open for external connections. Any feedback is highly appreciated! #!/bin/sh # Clear all existing rules. iptables -F # ACCEPT connections for loopback network connection, 127.0.0.1. iptables -A INPUT -i lo -j ACCEPT # ALLOW established traffic iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT # DROP packets that are NEW but does not have the SYN but set. iptables -A INPUT -p tcp ! --syn -m state --state NEW -j DROP # DROP fragmented packets, as there is no way to tell the source and destination ports of such a packet. iptables -A INPUT -f -j DROP # DROP packets with all tcp flags set (XMAS packets). iptables -A INPUT -p tcp --tcp-flags ALL ALL -j DROP # DROP packets with no tcp flags set (NULL packets). iptables -A INPUT -p tcp --tcp-flags ALL NONE -j DROP # ALLOW ssh traffic (and prevent against DoS attacks) iptables -A INPUT -p tcp --dport ssh -m limit --limit 1/s -j ACCEPT # ALLOW http traffic (and prevent against DoS attacks) iptables -A INPUT -p tcp --dport http -m limit --limit 5/s -j ACCEPT # ALLOW mysql traffic (and prevent against DoS attacks) iptables -A INPUT -p tcp --dport mysql -m limit --limit 25/s -j ACCEPT # DROP any other traffic. iptables -A INPUT -j DROP

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• Send command through PuTTY automatic login

  - by Arthur

  I am using the following to login automatically to a remote server and then run commands listed in a commands.txt, like this: C:\path to\putty.exe -ssh adreese.ip -l user -pw Password -m C:\Path to\command.txt commands.txt contains the following: wakeonlan -i broadcast adress Macadress However, when I try to do so a new window for PuTTY appears, but it closes and exits instantly after login. As a result, I cannot see the output of the command(s). After a several tests, it appears that the command is not execute , cause my computer doesn't "wake on lan". I don't understand what's going on here ? I cannot use the plink.exe program cause I cannot make connection with public key ( too much distant site for doing all the registration keys in putty ) Can someone help me with this ? Or can i use another program to make ssh connection and send command with script from a windows os? Edit : I also try to make a bash file in the distant server with the same command and execute it from the session like this : C:\path to\putty.exe -ssh adreese.ip -l user -pw Password \home\user\script.sh Ihave the same problem... Need help please : /

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• How can I make grub2 boot into Windows 7?

  - by Grzenio

  I had Windows 7 installed on my system, then I installed Debian testing with grub2 as its boot manager. Initially I couldn't see windows entry in grub at all, so I ran: aptitude install os-prober kcpuload update-grub Now I can see the entry, but when I select it I get only Win7 system restore, instead of the the real thing. Any ides how to make it work? EDIT: I tried the suggested approach to add a new file to /etc/grub.d, which generated an entry in grub.cfg, but it does not appear in the grub menu on boot :( I have this: grzes:/home/ga# cat /etc/grub.d/11_Windows #! /bin/sh -e echo Adding Windows >&2 cat << EOF menuentry “Windows 7? { set root=(hd0,2) chainloader +1 } And I have the following grub.cfg file: grzes:/home/ga# cat /boot/grub/grub.cfg # # DO NOT EDIT THIS FILE # # It is automatically generated by /usr/sbin/grub-mkconfig using templates # from /etc/grub.d and settings from /etc/default/grub # ### BEGIN /etc/grub.d/00_header ### if [ -s $prefix/grubenv ]; then load_env fi set default="0" if [ ${prev_saved_entry} ]; then set saved_entry=${prev_saved_entry} save_env saved_entry set prev_saved_entry= save_env prev_saved_entry set boot_once=true fi function savedefault { if [ -z ${boot_once} ]; then saved_entry=${chosen} save_env saved_entry fi } insmod ext2 set root=(hd0,3) search --no-floppy --fs-uuid --set 6ce3ff31-0ef7-41df-a6f5-b6b886db3a94 if loadfont /usr/share/grub/unicode.pf2 ; then set gfxmode=640x480 insmod gfxterm insmod vbe if terminal_output gfxterm ; then true ; else # For backward compatibility with versions of terminal.mod that don't # understand terminal_output terminal gfxterm fi fi set locale_dir=/boot/grub/locale set lang=en insmod gettext set timeout=5 ### END /etc/grub.d/00_header ###

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• Servers/Websites Keep Going Down

  - by Tyler Johnson

  Okay, I'm a noobie. I know how to build and compose a website, but I have no idea what I'm doing when it comes to servers and server commands, etc. I've recently had a problem with all of my sites on our servers going down all at once and then I have to go in and reboot the server for them to come up again. At first this was annoying, but now it is becoming agonizing as it now takes 3-4 reboots for the websites to come back up. I contacted support for my hosting, but they are not being very helpful. They just keep telling me what the issue might be and basically telling me that I'm going to have to look into it and figure it out, which really isn't possible since I know nothing. Anyway, here are the things they said were possible reasons: They said I have "strange logs" in my Apache webserver log, error: sh: fetch: command not found. My php.ini memory limit is: 256M which is very high. It should be 32M or 64M. Server is reaching Max Clients, meaning we have more than 150 visitors at a time. (They supposedly "fixed" this, but the sites/server are still going down) I have some Wordpress sites with plugins getting errors like: PHP Warning: pack(): Type H: illegal hex digit G in... PHP Fatal error: Cannot use object of type stdClass as array in... PHP Fatal error: Maximum execution time of 30 seconds exceeded in... PHP Fatal error: Call to undefined function file_exists() in... PHP Parse error: syntax error, unexpected '<' I know that's a lot, but I really am at wits end and have no idea what to do now. If anyone could maybe give me some advice or point me in the right direction I would greatly appreciate it! Thanks! Oh, and here are the specs for my server: RAM: 2048MB CPU Shares: 40 Primary Disk: 50GB Data Transfer: 75GB Port Speed: 5Mbps Type: Linux

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• What's the mysql-5.5 compilation configuration arguments on Ubuntu 10.04?

  - by photon

  I want to install mysql 5.5 on my Ubuntu10.04 desktop system. But I'm not sure what arguments I should use after the cmake command. Though I've seen these articles: https://wikis.oracle.com/display/mysql/Cmake Building mysql-5.5.19 from source on ubuntu 11.10 with the static flag Compile MySQL 5.5.15 from source using autorun.sh and cmake, unable to start MySQL after Would anyone like to share the mysql-5.5 configuration arguments of compilation on Ubuntu 10.04? $cmake # what arguments to enter for this command update: cmake . -DBUILD_CONFIG=mysql_release -DCMAKE_INSTALL_PREFIX=/path/to/mysql_installation_dir -DWITH_SSL=no the official web site says it need to use cmake to compile the source package, but according to a teck blog, it doesn't need to compile the source, so which one is correct? When I use Cmake, I also had following error message: $ sudo cmake . -DBUILD_CONFIG=mysql_release -DCMAKE_INSTALL_PREFIX=/usr/local/mysql_community_5.5 -- The CXX compiler identification is unknown CMake Error: your CXX compiler: "CMAKE_CXX_COMPILER-NOTFOUND" was not found. Please set CMAKE_CXX_COMPILER to a valid compiler path or name. CMake Error at cmake/build_configurations/mysql_release.cmake:126 (MESSAGE): Clarification: I'm not clever and I'm a slow-thinking guy. And I cannot find a clever guy around me to give me some useful help. So I come here and hope someone is kind and generous enough to take the time to post the details.

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• Why is only one wget command working in my crontab?

  - by afEkenholm

  I wish to fetch content from a PHP script on my server two times a day, altering a query variable lang to set what language we want, and save this content in two language specific files. This is my crontab: */15 * * * * ~root/apache.sh > /var/log/checkapache.log 10 0 * * * wget -O /path/to/file-sv.sql "http://mydomain.com/path/?lang=sv" 11 0 * * * wget -O /path/to/file-en.sql "http://mydomain.com/path/?lang=en" The problem is that only the first wget command line is being executed (or to be precise: the only file that is being written is /path/to/file-sv.sql). If I switch the second and the third row, /path/to/file-en.sql gets written instead. The first line always runs as expected, no matter where it is. I then tried using lynx -dump "http://mydomain.com/path/?lang=xx" > /path/to/file-xx.sql to no avail; still only the first lynx line executed successfully. Even mixing wget and lynx did not change this! Getting kinda desperate! Am I missing something? There are thousands of articles on crontab (combined with) wget or lynx, but all seems to cover basic setups and syntax. Does anyone got a clue of what I am doing wrong? Thanks, Alexander

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• Ubuntu Launcher Items Don't Have Correct Environment Vars under NX

  - by ivarley

  I've got an environment variable issue I'm having trouble resolving. I'm running Ubuntu (Karmic, 9.10) and coming in via NX (NoMachine) on a Mac. I've added several environment variables in my .bashrc file, e.g.: export JAVA_HOME=$HOME/dev/tools/Linux/jdk/jdk1.6.0_16/ Sitting at the machine, this environment variable is available on the command line, as well as for apps I launch from the Main Menu. Coming in over NX, however, the environment variable shows up correctly on the command line, but NOT when I launch things via the launcher. As an example, I created a simple shell script called testpath in my home folder: #!/bin/sh echo $PATH && sleep 5 quit I gave it execute privileges: chmod +x testpath And then I created a launcher item in my Main Menu that simply runs: ./testpath When I'm sitting at the computer, this launcher runs and shows all the stuff I put into the $PATH variable in my .bashrc file (e.g. $JAVA_HOME, etc). But when I come in over NX, it shows a totally different value for the $PATH variable, despite the fact that if I launch a terminal window (still in NX), and type export $PATH, it shows up correctly. I assume this has to do with which files are getting loaded by the windowing system over NX, and that it's some other file. But I have no idea how to fix it. For the record, I also have a .profile file with the following in it: # if running bash if [ -n "$BASH_VERSION" ]; then # include .bashrc if it exists if [ -f "$HOME/.bashrc" ]; then . "$HOME/.bashrc" fi fi

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• S3sync not working

  - by user57833

  Hello, I managed to get s3sync to upload my test folder to Amazon S3 and can see it in the MWS Managment Console. Downloading the data back to a test folder results in the following error message: root@mybucketname:/var/s3sync# ./week_download.sh s3Prefix backups/weekly localPrefix /var/s3sync/testdown/weekly s3TreeRecurse mybucketname backups/weekly Creating new connection Trying command list_bucket mybucketname prefix backups/weekly max-keys 200 delimiter / with 100 retries le ft Response code: 200 prefix found: / s3TreeRecurse mybucketname backups/weekly / Trying command list_bucket mybucketname prefix backups/weekly/ max-keys 200 delimiter / with 100 retries l eft Response code: 200 S3 item backups/weekly/ s3 node object init. Name: Path:backups/weekly Size:0 Tag:d41d8cd98f00b204e9800998ecf8427e Date:Fri O ct 29 14:21:53 UTC 2010 local node object init. Name: Path:/var/s3sync/testdown/weekly/ Size: Tag: Date: source: dest: Update node s3sync.rb:638:in initialize': No such file or directory - /var/s3sync/testdown/weekly/.s3syncTemp (E rrno::ENOENT) from s3sync.rb:638:inopen' from s3sync.rb:638:in updateFrom' from s3sync.rb:393:inmain' from s3sync.rb:735 I am using the following download script: !/bin/bash script to download local directory upto s3 cd /var/s3sync/ export AWS_ACCESS_KEY_ID=nothing to see here export AWS_SECRET_ACCESS_KEY=nothing to see here export SSL_CERT_DIR=/var/s3sync/certs ruby s3sync.rb -r -v -d --progress --make-dirs mybucket:backups/weekly /var/s3sync/testdown copy and modify line above for each additional folder to be synced Any idea's? Does the download script need to download to the source of Amazon S3 i.e testup folder? Was hoping on the instance of a complete failure and the original folders won't exist that it would just download everything from me. Note: changed my bucket names to "mybucketname" so that it is not public!

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• Strange ssh login

  - by Hikaru

  I am running debian server and i have received a strange email warning about ssh login It says, that user mail logged in using ssh from remote address: Environment info: USER=mail SSH_CLIENT=92.46.127.173 40814 22 MAIL=/var/mail/mail HOME=/var/mail SSH_TTY=/dev/pts/7 LOGNAME=mail TERM=xterm PATH=/usr/local/bin:/usr/bin:/bin:/usr/bin/X11:/usr/games LANG=en_US.UTF-8 SHELL=/bin/sh KRB5CCNAME=FILE:/tmp/krb5cc_8 PWD=/var/mail SSH_CONNECTION=92.46.127.173 40814 my-ip-here 22 I looked in /etc/shadow and find out, that password for is not set mail:*:15316:0:99999:7::: I found this lines for login in auth.log n 3 02:57:09 gw sshd[2090]: pam_winbind(sshd:auth): getting password (0x00000388) Jun 3 02:57:09 gw sshd[2090]: pam_winbind(sshd:auth): pam_get_item returned a password Jun 3 02:57:09 gw sshd[2091]: pam_winbind(sshd:auth): user 'mail' granted access Jun 3 02:57:09 gw sshd[2091]: Accepted password for mail from 92.46.127.173 port 45194 ssh2 Jun 3 02:57:09 gw sshd[2091]: pam_unix(sshd:session): session opened for user mail by (uid=0) Jun 3 02:57:10 gw CRON[2051]: pam_unix(cron:session): session closed for user root and lots of auth failures for this user. There is no lines with COMMAND string for this user. Nothing was found with "rkhunter" and with "ps aux" process inspection, also there is no suspicious connections was found with "netstat" (as I can see) Can anyone tell me how it is possible and what else should be done? Thanks in advance.

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• Can I regenerate the rsa key for SSH access to a Cisco router? Or should I completely erase the SSH config?

  - by Josh

  I have a production 2691 that I administer via telnet. I'd like to change that to SSH. Looking at the config, it looks like there have been keys generated in the past. I think the history here is SSH was set up, they had issues connecting, and fell back to telnet. There are a number of crypto entries, including the following: crypto pki trustpoint Gateway-2691.xxx.com enrollment selfsigned subject-name cn=IOS-Gateway-2691.xxx.com revocation-check none rsakeypair Gateway-2691.xxx.com I've also got this going... Gateway-2691#sh ip ssh SSH Disabled - version 1.99 %Please create RSA keys (of atleast 768 bits size) to enable SSH v2. Authentication timeout: 120 secs; Authentication retries: 3 Gateway-2691# My question is simply, can I run crypto key generate rsa again to set it up again? Is there a way to negate or no all of the previous ssh config so that I can start fresh there? I may be asking the wrong questions, as I'm learning here. As for the SSH how-to, I'm sure I can find information in many places. I'm just basically wondering if I need to start fresh, or if I can pick up where the last attempt at SSH config left off.

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• upstart scripts: run a task after networking goes up

  - by The Journeyman geek

  I'm working on moving my current server setup to newer hardware, and migrating from ubuntu karmic koala to lucid lynx. Currently i'm using gw6c (compiled from the gogo6 website, as opposed to the version from the repositories) to get ipv6 access for my systems. On the karmic koala system, i used simple init.d script to get the ipv6 client started #! /bin/sh /usr/local/gw6c/bin/gw6c -f /usr/local/gw6c/bin/gw6c.conf I figured since this runs at any runlevel, it should translate to respawn console none start on startup stop on shutdown script exec /usr/local/gw6c/bin/gw6c -f /usr/local/gw6c/bin/gw6c.conf emit free6_ipv6_started end script this works fine started from initctrl, but it apparently fails to start when it boots. - its status being stop/waiting. It works fine (and respawns) when started otherwise.Any ideas on where i'm going wrong, and what would be the appropriate 'start on' arguement? EDIT: the exact error is 'init: gw6c main process (xxx) ended with status 8' followed by the process respawning , with xxx being a PID i suspect. I'm also half suspecting this is cause gw6c starts before networking does, and i need my eth0 up before gw6c is

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• Setting up logging for a remote backup script

  - by Brian Dainis

  So I wrote up a short script that I am planning to run via a cron job daily to package up my site files and send them to a remote location. I also plan to incorporate DB dumps, but I have not gotten that far yet. My issue today however is that Im am uncertain how to log the output of each command for errors, warnings, or other pertinent information the command may output. I would also like to install sometype of fail safe so if something goes horribly wrong the script will stop dead in its tracks and notify me via email or something. Ok the email thing is not as critical, but would be nice. Does anybody have any ideas for that? Here is what I have so far. By the way, both servers are CentOS 6.2 running standard LAMP. #!/bin/sh ################################# ### Set Vars ################################# THEDATE=`date +%m%d%y%H%M` ################################# ### Create Archives ################################# tar -cf /root/backups/files/server_BAK_${THEDATE}.tar -C / var/www/vhosts gzip /root/backups/files/server_BAK_${THEDATE}.tar ################################# ### Send Data to Remote Server ################################# scp /root/backups/files/server_BAK_${THEDATE}.tar.gz user@host:/home/bak1/ftp/backups/ ################################# ### Remove Data from this Server ################################# rm -rf /root/backups/files/server_BAK_${THEDATE}.tar.gz

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• Allow outgoing connections for DNS

  - by Jimmy

  I'm new to IPtables, but I am trying to setup a secure server to host a website and allow SSH. This is what I have so far: #!/bin/sh i=/sbin/iptables # Flush all rules $i -F $i -X # Setup default filter policy $i -P INPUT DROP $i -P OUTPUT DROP $i -P FORWARD DROP # Respond to ping requests $i -A INPUT -p icmp --icmp-type any -j ACCEPT # Force SYN checks $i -A INPUT -p tcp ! --syn -m state --state NEW -j DROP # Drop all fragments $i -A INPUT -f -j DROP # Drop XMAS packets $i -A INPUT -p tcp --tcp-flags ALL ALL -j DROP # Drop NULL packets $i -A INPUT -p tcp --tcp-flags ALL NONE -j DROP # Stateful inspection $i -A INPUT -m state --state NEW -p tcp --dport 22 -j ACCEPT # Allow established connections $i -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT # Allow unlimited traffic on loopback $i -A INPUT -i lo -j ACCEPT $i -A OUTPUT -o lo -j ACCEPT # Open nginx $i -A INPUT -p tcp --dport 443 -j ACCEPT $i -A INPUT -p tcp --dport 80 -j ACCEPT # Open SSH $i -A INPUT -p tcp --dport 22 -j ACCEPT However I've locked down my outgoing connections and it means I can't resolve any DNS. How do I allow that? Also, any other feedback is appreciated. James

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• How to configure iptables to use apt-get in a server?

  - by segaco

  I'm starting using iptables (newbie) to protect a linux server (specifically Debian 5.0). Before I configure the iptables settings, I can use apt-get without a problem. But after I configure the iptables, the apt-get stop working. For example I use this script in iptables: #!/bin/sh IPT=/sbin/iptables ## FLUSH $IPT -F $IPT -X $IPT -t nat -F $IPT -t nat -X $IPT -t mangle -F $IPT -t mangle -X $IPT -P INPUT DROP $IPT -P OUTPUT DROP $IPT -P FORWARD DROP $IPT -A INPUT -i lo -j ACCEPT $IPT -A OUTPUT -o lo -j ACCEPT $IPT -A INPUT -p tcp --dport 22 -j ACCEPT $IPT -A OUTPUT -p tcp --sport 22 -j ACCEPT $IPT -A INPUT -p tcp --dport 80 -j ACCEPT $IPT -A OUTPUT -p tcp --sport 80 -j ACCEPT $IPT -A INPUT -p tcp --dport 443 -j ACCEPT $IPT -A OUTPUT -p tcp --sport 443 -j ACCEPT # Allow FTP connections @ port 21 $IPT -A INPUT -p tcp --sport 21 -m state --state ESTABLISHED -j ACCEPT $IPT -A OUTPUT -p tcp --dport 21 -m state --state NEW,ESTABLISHED -j ACCEPT # Allow Active FTP Connections $IPT -A INPUT -p tcp --sport 20 -m state --state ESTABLISHED,RELATED -j ACCEPT $IPT -A OUTPUT -p tcp --dport 20 -m state --state ESTABLISHED -j ACCEPT # Allow Passive FTP Connections $IPT -A INPUT -p tcp --sport 1024: --dport 1024: -m state --state ESTABLISHED -j ACCEPT $IPT -A OUTPUT -p tcp --sport 1024: --dport 1024: -m state --state ESTABLISHED,RELATED -j ACCEPT #DNS $IPT -A OUTPUT -p udp --dport 53 --sport 1024:65535 -j ACCEPT $IPT -A INPUT -p tcp --dport 1:1024 $IPT -A INPUT -p udp --dport 1:1024 $IPT -A INPUT -p tcp --dport 3306 -j DROP $IPT -A INPUT -p tcp --dport 10000 -j DROP $IPT -A INPUT -p udp --dport 10000 -j DROP then when I run apt-get I obtain: core:~# apt-get update 0% [Connecting to ftp.us.debian.org] [Connecting to security.debian.org] [Conne and it stalls. What rules I need to configure to make it works. Thanks

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• Debian 100% cpu every 30 minutes but not loggable?

  - by user654123

  I have a Debian 7 x64 machine running with Digital Ocean that has every 30 Minutes a 100% cpu usage for about 1 minute. A couple of days ago it stayed there for a couple of hours so the server finally crashed and I had to repair my Mysql databases. The server is a pure webserver running apache2 and Mysql. I tried tracing which processes use the cpu but with no luck. The script I used: #!/bin/sh while true; do ps -A -eo pcpu,pid,user,args | sort -k 1 -r | head -3 >> proclog.txt; echo "\n" >> proclog.txt; sleep 2; done I was monitoring htop as well while this was happening, but the top processess' cpu usage didn't add up to ~15% even though htop's cpu meter showed constant 100%. htop was configured to show all users' processess, user- and kernel-threads. Edit: By stopping Apache2 & Mysql prior to the expected 100% usage I can tell both are not responsible for it. The 100% usage occurred anyway. This is what the graph looked like the past hours:

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