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• Gluster bricks are offline and errors in logs

  - by Roman Newaza

  I have substituted all the IP addresses with hostnames and renamed configs (IP to hostname) in /var/lib/glusterd by my shell script. After that I restarted Gluster Daemon and the volume. Then I checked if all the peers are connected: root@GlusterNode1a:~# gluster peer status Number of Peers: 3 Hostname: gluster-1b Uuid: 47f469e2-907a-4518-b6a4-f44878761fd2 State: Peer in Cluster (Connected) Hostname: gluster-2b Uuid: dc3a3ff7-9e30-44ac-9d15-00f9dab4d8b9 State: Peer in Cluster (Connected) Hostname: gluster-2a Uuid: 72405811-15a0-456b-86bb-1589058ff89b State: Peer in Cluster (Connected) I could see mounted volumes size change on all the nodes when I execute df command, so new data is coming. But recently I noticed error messages in app log: copy(/storage/152627/dat): failed to open stream: Structure needs cleaning readfile(/storage/1438227/dat): failed to open stream: Input/output error unlink(/storage/189457/23/dat): No such file or directory Finally, I have found out some bricks are offline: root@GlusterNode1a:~# gluster volume status Status of volume: storage Gluster process Port Online Pid ------------------------------------------------------------------------------ Brick gluster-1a:/storage/1a 24009 Y 1326 Brick gluster-1b:/storage/1b 24009 N N/A Brick gluster-2a:/storage/2a 24009 N N/A Brick gluster-2b:/storage/2b 24009 N N/A Brick gluster-1a:/storage/3a 24011 Y 1332 Brick gluster-1b:/storage/3b 24011 N N/A Brick gluster-2a:/storage/4a 24011 N N/A Brick gluster-2b:/storage/4b 24011 N N/A NFS Server on localhost 38467 Y 24670 Self-heal Daemon on localhost N/A Y 24676 NFS Server on gluster-2b 38467 Y 4339 Self-heal Daemon on gluster-2b N/A Y 4345 NFS Server on gluster-2a 38467 Y 1392 Self-heal Daemon on gluster-2a N/A Y 1402 NFS Server on gluster-1b 38467 Y 2435 Self-heal Daemon on gluster-1b N/A Y 2441 What can I do about that? I need to fix it. Note: CPU and Network usage of all the four nodes are about the same.

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• PHP/Linux File Permissions

  - by user1733435

  May I ask a question about file permission. I set up Ubuntu server where Apache got running. I have simple php upload form and able to upload file to /var/www/site/uploads as follows. sandbox@sandbox-virtual-machine:/var/www/site/uploads$ ll total 1736 drwxrwxrwx 2 www-data www-data 4096 Oct 18 02:53 ./ drwxrwxrwx 3 sandbox sandbox 4096 Oct 18 00:42 ../ -rw-r--r-- 1 www-data www-data 145998 Oct 18 02:53 3d wallpaper pic.jpg -rw-r--r-- 1 www-data www-data 166947 Oct 18 02:53 3D Wallpapers 9.jpg -rw-r--r-- 1 www-data www-data 1451489 Oct 18 02:53 6453_3d_landscape_hd_wallpapers_green.jpg Is there anyway to upload files and they show up as -rw-r--r-- 1 sandbox sandbox 145998 Oct 18 02:53 3d wallpaper pic.jpg -rw-r--r-- 1 sandbox sandbox 166947 Oct 18 02:53 3D Wallpapers 9.jpg -rw-r--r-- 1 sandbox sandbox 1451489 Oct 18 02:53 6453_3d_landscape_hd_wallpapers_green.jpg so that I could straight away feed them to waiting/running shell script. Right now waiting script(move,checksums,rename,resize,etc) unable to do anything to uploaded files with attributes of www-data. If I just do as local account, such as sandbox@sandbox-virtual-machine:/var/www/site/uploads$touch testfile then the script is able to run as I would like to. Any suggestion would be grateful,thanks in advance as well. Thanks for everyone giving help to me,that I was able to progress. Now I am close to getting solved and append the output sandbox@sandbox-virtual-machine:/var/www/site/uploads$ ll total 388 drwxrwxrwx 2 www-data www-data 4096 Oct 18 04:22 ./ drwxrwxrwx 3 sandbox sandbox 4096 Oct 18 04:17 ../ -rw-r--r-- 1 sandbox sandbox 166947 Oct 18 04:21 3D Wallpapers 9.jpg -rw-r--r-- 1 sandbox sandbox 219808 Oct 18 04:20 adafruit_pi.png -rw-rw-r-- 1 sandbox sandbox 0 Oct 18 04:22 test How may I set permission to uploaded files like 'test' only w difference in middle group. Such as adafruit_pi.png Vs test. Which statement shall I insert to php code,please?

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• With a username passed to a script, find the user's home directory

  - by Clinton Blackmore

  I am writing a script that gets called when a user logs in and check if a certain folder exists or is a broken symlink. (This is on a Mac OS X system, but the question is purely bash). It is not elegant, and it is not working, but right now it looks like this: #!/bin/bash # Often users have a messed up cache folder -- one that was redirected # but now is just a broken symlink. This script checks to see if # the cache folder is all right, and if not, deletes it # so that the system can recreate it. USERNAME=$3 if [ "$USERNAME" == "" ] ; then echo "This script must be run at login!" >&2 exit 1 fi DIR="~$USERNAME/Library/Caches" cd $DIR || rm $DIR && echo "Removed misdirected Cache folder" && exit 0 echo "Cache folder was fine." The crux of the problem is that the tilde expansion is not working as I'd like. Let us say that I have a user named george, and that his home folder is /a/path/to/georges_home. If, at a shell, I type: cd ~george it takes me to the appropriate directory. If I type: HOME_DIR=~george echo $HOME_DIR It gives me: /a/path/to/georges_home However, if I try to use a variable, it does not work: USERNAME="george" cd ~$USERNAME -bash: cd: ~george: No such file or directory I've tried using quotes and backticks, but can't figure out how to make it expand properly. How do I make this work?

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• Whitelist IP from google-authenticator in sshd pam

  - by spudwaffle

  My Ubuntu 12.04 server uses the google-authenticator pam module to provide two step authentication for ssh. I need to make it so that a certain IP does not need to type the verification code. The /etc/pam.d/sshd file is below: # PAM configuration for the Secure Shell service # Read environment variables from /etc/environment and # /etc/security/pam_env.conf. auth required pam_env.so # [1] # In Debian 4.0 (etch), locale-related environment variables were moved to # /etc/default/locale, so read that as well. auth required pam_env.so envfile=/etc/default/locale # Standard Un*x authentication. @include common-auth # Disallow non-root logins when /etc/nologin exists. account required pam_nologin.so # Uncomment and edit /etc/security/access.conf if you need to set complex # access limits that are hard to express in sshd_config. # account required pam_access.so # Standard Un*x authorization. @include common-account # Standard Un*x session setup and teardown. @include common-session # Print the message of the day upon successful login. session optional pam_motd.so # [1] # Print the status of the user's mailbox upon successful login. session optional pam_mail.so standard noenv # [1] # Set up user limits from /etc/security/limits.conf. session required pam_limits.so # Set up SELinux capabilities (need modified pam) # session required pam_selinux.so multiple # Standard Un*x password updating. @include common-password auth required pam_google_authenticator.so I've already tried adding a auth sufficient pam_exec.so /etc/pam.d/ip.sh line above the google-authenticator line, but I can't understand how to check an IP adress in the bash script.

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• Configuring vsftpd with nginx on Ubuntu 12.04 LTS

  - by arby

  I've attempted to configure a nginx / vsftpd server on Ubuntu 12.04 LTS (via amazon ec2) a couple times now, but I seem to keep making a mistake along the way. Currently, when I try to connect to my ftp server it takes a minute or so before it connects. Then when I issue a command, they all timeout with an operation failed error. Aside from these issues, I'm not completely confident with the file ownership & permissions or the configuration / settings. So, I think it's best if I just re-install and re-configure correctly. I believe the nginx installation comes with a default user of www-data:www-data and web root directory ownership by root:root. Vsftpd, however, needs to have a user created with the same group as the nginx user (www-data), and the same home directory as the nginx server (/usr/share/nginx/www), with g+w chmod permissions granted on that directory. The vsftpd.conf file should disable anonymous logins and enable local logins, file writing, and chroot local users. In my previous config, I had /bin/false set for the ftp user's shell and pam_shells.so disabled. I also had local_umask set to 0027. So, starting with a fresh ec2 instance, I've got: sudo apt-get install vsftpd sudo apt-get install nginx For the firewall I issued the command (not sure if necessary): sudo ufw allow ftp Which commands / config is recommended from here? I only need 1 ftp user that I can use to login with my ftp client to modify the single nginx web domain, which will need php & sql for WordPress.

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• How to find cause of main file system going to read only mode

  - by user606521

  Ubuntu 12.04 File system goes to readonly mode frequently. First of all I have read this question file system is going into read only mode frequently already. But I have to know if it's not caused by something else than dying hard drive. This is server provided by my client and I am just runing there some node.js workers + one node.js server and I am using mongodb. From time to time (every 20-50h) system suddenly makes filesystem read only, mongodb process fails (due read-only fs) and my node workers/server (which are started by forever) are just killed. Here is the log from dmesg - I can see there some errors and messages that FS is going to read-only, and there is also some JOURNAL error but I would like to find cause of those errors.. http://speedy.sh/Ux2VV/dmesg.log.txt edit smartctl -t long /dev/sda smartctl 5.41 2011-06-09 r3365 [x86_64-linux-3.5.0-23-generic] (local build) Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net SMART support is: Unavailable - device lacks SMART capability. A mandatory SMART command failed: exiting. To continue, add one or more '-T permissive' options. What I am doing wrong? Same is for sda2. Morover now when I type any command that not exists in shell I get this: Sorry, command-not-found has crashed! Please file a bug report at: https://bugs.launchpad.net/command-not-found/+filebug Please include the following information with the report:

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• sequential SSH command execution not working in Ubuntu/Bash

  - by kumar

  My requirement is I will have a set of commands that needs to be executed in a text file. My Shell script has to read each command, execute and store the results in a separate file. Here is the snippet which does the above requirement. while read command do echo 'Command :' $command >> "$OUTPUT_FILE" redirect_pos=`expr index "$command" '>>'` if [ `expr index "$command" '>>'` != 0 ];then redirect_fn "$redirect_pos" "$command"; else $command state=$? if [ $state != 0 ];then echo "command failed." >> "$OUTPUT_FILE" else echo "executed successfully." >> "$OUTPUT_FILE" fi fi echo >> "$OUTPUT_FILE" done < "$INPUT_FILE" Sample Commands.txt will be like this ... tar -rvf /var/tmp/logs.tar -C /var/tmp/ Commands_log.txt gzip /var/tmp/logs.tar rm -f /var/tmp/list.txt This is working fine for commands which needs to be executed in local machine. But When I am trying to execute the following ssh commands only the 1st command getting executed. Here are the some of the ssh commands added in my text file. ssh uname@hostname1 tar -rvf /var/tmp/logs.tar -C /var/tmp/ Commands_log.txt ssh uname@hostname2 gzip /var/tmp/logs.tar ssh .. etc When I am executing this in cli it is working fine. Could anybody help me in this?

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• Why from a virtualized Ubuntu system I can't discover the ip address of my router?

  - by AndreaNobili

  I am not into computer network and I have the following problem finding my router IP address. I have a Windows 8 PC on on which it is installed VmWare Workstation that virtualizes Linux Ubuntu. The network adapter settings of this Virtual Machine is setted as NAT. Now my problem is that if in the Windows 8 DOS shell I perform the ifconfig statment I obtain C:\Users\Andrea>ipconfig Configurazione IP di Windows Scheda Ethernet tap0: Stato supporto. . . . . . . . . . . . : Supporto disconnesso Suffisso DNS specifico per connessione: techub.lan Scheda Ethernet Connessione di rete Bluetooth: Stato supporto. . . . . . . . . . . . : Supporto disconnesso Suffisso DNS specifico per connessione: Scheda LAN wireless Connessione alla rete locale (LAN)* 11: Stato supporto. . . . . . . . . . . . : Supporto disconnesso Suffisso DNS specifico per connessione: Scheda LAN wireless Wi-Fi: Suffisso DNS specifico per connessione: DSL2750B Indirizzo IPv6 locale rispetto al collegamento . : fe80::89ff:6d12:49cf:4354%13 Indirizzo IPv4. . . . . . . . . . . . : 192.168.1.3 Subnet mask . . . . . . . . . . . . . : 255.255.255.0 Gateway predefinito . . . . . . . . . : 192.168.1.1 Scheda Ethernet Ethernet: Stato supporto. . . . . . . . . . . . : Supporto disconnesso Suffisso DNS specifico per connessione: Scheda Ethernet VMware Network Adapter VMnet1: Suffisso DNS specifico per connessione: Indirizzo IPv6 locale rispetto al collegamento . : fe80::edb3:8352:f954:2b0c%23 Indirizzo IPv4. . . . . . . . . . . . : 192.168.129.1 Subnet mask . . . . . . . . . . . . . : 255.255.255.0 Gateway predefinito . . . . . . . . . : Scheda Ethernet VMware Network Adapter VMnet8: Suffisso DNS specifico per connessione: Indirizzo IPv6 locale rispetto al collegamento . : fe80::d00b:8c6e:98b:f1ec%24 Indirizzo IPv4. . . . . . . . . . . . : 192.168.15.1 Subnet mask . . . . . . . . . . . . . : 255.255.255.0 Gateway predefinito . . . . . . . . . : Scheda Tunnel Teredo Tunneling Pseudo-Interface: Stato supporto. . . . . . . . . . . . : Supporto disconnesso Suffisso DNS specifico per connessione: Scheda Tunnel isatap.techub.lan: Stato supporto. . . . . . . . . . . . : Supporto disconnesso Suffisso DNS specifico per connessione: techub.lan Scheda Tunnel isatap.{5B95051D-79AB-4147-92CF-3A2E16698432}: Stato supporto. . . . . . . . . . . . : Supporto disconnesso Suffisso DNS specifico per connessione: Scheda Tunnel isatap.{340A5FAD-1597-402E-B658-29C37E8F7BC2}: Stato supporto. . . . . . . . . . . . : Supporto disconnesso Suffisso DNS specifico per connessione: Scheda Tunnel isatap.DSL2750B: Suffisso DNS specifico per connessione: DSL2750B Indirizzo IPv6 locale rispetto al collegamento . : fe80::5efe:192.168.1.3%26 Gateway predefinito . . . . . . . . . : So, looking at the previous output it appear clear that the default gateway (my router) is: 192.168.1.1, infact if I open it into a browser it apear to me the login mask to enter in the router settings.... Ok, if now I open the virtualized Ubuntu shell and perform the route command I obtain this output: andrea@andrea-virtual-machine:~$ route Tabella di routing IP del kernel Destination Gateway Genmask Flags Metric Ref Use Iface default 192.168.15.2 0.0.0.0 UG 0 0 0 eth0 link-local * 255.255.0.0 U 1000 0 0 eth0 192.168.15.0 * 255.255.255.0 U 1 0 0 eth0 So, here it say to me that the default gateway is 192.168.15.2 (that is not my router ip address), why? My idea is that it could depend by the NAT. Because my Windows system is connected using the wireless but in the virtualized Ubuntu I see that I am connected to a "wired network". So I think that the NAT virtualize a network adapter (or something like this) and that 192.168.15.2 could be the ip address of this network adapter... But it seems strange to me because, as you can see in the previous ipconfig output the VmWare network adapter addresses are: 192.168.129.1 and 192.168.15.1. So I have also 2 others doubts: 1) What device represents the 192.168.15.2 ip address that the virtualized Ubuntu see as Default gateway but that is not my router? 2) What exactly do the two VmWare network adapter that I have configured into my Windows 8 system? There is a way to discover my router ip from the virtualized Ubuntu system ? Tnx Andrea

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• Odd IIS FTP Failure

  - by Monkey Boson

  We're running a script on our production box that zips up our database and FTPs it to a backup box every night. Our production box is running Redhat Enterprise 5. Our backup box is running Windows XP Pro / IIS 5.1. Both machines are on the same VLAN (not sure if this is imporatant). The backup file usually clocks in at around 3GB. Every now and again (~5% of the time), the backup script fails. The shell script on the "client side" - which looks at return codes - never identifies any problem since ftp always returns 0. On the "server side", IIS writes out a log that looks like this: #Software: Microsoft Internet Information Services 5.1 #Version: 1.0 #Date: 2009-08-08 07:04:25 #Fields: time c-ip cs-method cs-uri-stem sc-status sc-win32-status 07:04:25 192.168.111.235 [15]USER backup 331 0 07:04:25 192.168.111.235 [15]PASS - 230 0 07:05:54 192.168.111.235 [15]created backup_20090808.zip 426 10035 07:06:16 192.168.111.235 [15]QUIT - 426 0 Now, I know that 426 means "Connection closed, transfer aborted", which is sort-of a catch-all for "IIS was not happy". The real puzzler is the wincode: 10035 (WSAEWOULDBLOCK -- Resource temporarily unavailable). My understanding is that this code is normal when using non-blocking socket calls - which would almost certainly be used by any FTP Server implementation. My first guess that it might be a timeout issue doesn't make sense, since we're only talking about a few minutes here and the timeout was left at the default 900 s. Does anybody have any ideas about what is causing this problem, and how it may be fixed? Thanks!

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• Mac Port error installing gsoap

  - by Kevin

  Hi All, I have installed Mac Ports V1.8.1 no worries. I ran sudo port -v selfupdate no worries. I ran sudo port install gsoap And get the following error message. --- Computing dependencies for gsoap --- Fetching gsoap --- Attempting to fetch gsoap_2.7.13.tar.gz from http://optusnet.dl.sourceforge.net/gsoap2 --- Verifying checksum(s) for gsoap --- Extracting gsoap --- Applying patches to gsoap --- Configuring gsoap Error: Target org.macports.configure returned: configure failure: shell command " cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_devel_gsoap/work/gsoap-2.7" && ./configure --prefix=/opt/local --enable-samples " returned error 77 Command output: checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for gawk... no checking for mawk... no checking for nawk... no checking for awk... awk checking whether make sets $(MAKE)... no checking build system type... i386-apple-darwin10.2.0 checking host system type... i386-apple-darwin10.2.0 checking whether make sets $(MAKE)... (cached) no checking for C++ compiler default output file name... configure: error: C++ compiler cannot create executables See `config.log' for more details. Error: Status 1 encountered during processing. Any ideas as to why it is failing. Regards Kevin

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• Environment variables in bash_profile or bashrc?

  - by Viriato

  I have found this question [blog]: Difference between .bashrc and .bash_profile very useful but after seeing the most voted answer (very good by the way) I have further questions. Towards the end of the most voted, correct answer I see the statement as follows : Note that you may see here and there recommendations to either put environment variable definitions in ~/.bashrc or always launch login shells in terminals. Both are bad ideas. Why is it a bad idea (I am not trying to fight, I just want to understand)? If I want to set an environment variable and add it to the PATH (for example JAVA_HOME) where it would be the best place to put the export entry? in ~/.bash_profile or ~/.bashrc? If the answer to question number 2 is ~/.bash_profile, then I have two further questions: 3.1. What would you put under ~/.bashrc? only aliases? 3.2. In a non-login shell, I believe the ~/.bash_profile is not being "picked up". If the export of JAVA_HOME entry was in bash_profile would I be able to execute javac & java commands? Would it find them on the PATH? Is that the reason why some posts and forums suggest setting JAVA_HOME and alike to ~/.bashrc? Thanks in advance.

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• Write access from a Windows client via a ZFS SMB, to a file created on the host in OpenIndiana

  - by Gerald Kaszuba

  I've got an OpenIndiana server running ZFS that is shared using a nobody user and group. I don't fully understand Solaris ACL permissions, but I do know Linux style permissions. The client is Windows 8 and the server is OpenIndiana is oi_148. I'm failing to work out how to make write permission work correctly for the Windows client. It is able to make new files, but can not modify files created by the shell in OpenIndiana. When a file ("local file") is created locally as the user nobody in bash, and another file ("smb file") created remotely via SMB (as nobody also), they are quite different in permissions: # ls -V -rw-r--r-- 1 nobody nobody 0 Dec 2 12:24 local file owner@:rw-p--aARWcCos:-------:allow group@:r-----a-R-c--s:-------:allow everyone@:r-----a-R-c--s:-------:allow -rwx------+ 1 nobody nobody 0 Dec 2 12:24 smb file user:nobody:rwxpdDaARWcCos:-------:allow group:2147483648:rwxpdDaARWcCos:-------:allow In bash, I'm able to write to smb file, but vice versa, the Windows client is not able to write to local file. This is confusing to me because it appears that it should allow the SMB client to write to local file, because nobody is the owner and it has a w in the ACL. The sharesmb setting is is fairly boring, although I'm hoping there can something to set in here similar to a umask: sharesmb name=shared,guestok=true How can I make these two work together and have a symmetrical permission system, where both SMB and the local user produce the same permissions? Is there some sort of ACL that can set at the root of the file system to allow all files to be created in a similar manner?

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• copSSH and cygwin - Can't use windows style paths

  - by DrFredEdison

  I setup copSSH on one of my windows servers, and within the copSSH bash shell, I can't seem to use windows-style paths to remove and copy files. If I do try, I get the following: $ /bin/cp -r C:/Domains/_temp/collage_push/* C:/Domains/collage/ cygwin warning: MS-DOS style path detected: C:/Domains/_temp/collage_push/ Preferred POSIX equivalent is: /cygdrive/c/Domains/_temp/collage_push/ CYGWIN environment variable option "nodosfilewarning" turns off this warning. Consult the user's guide for more details about POSIX paths: http://cygwin.com/cygwin-ug-net/using.html#using-pathnames I have created a windows environment variable CYGWIN set to nodosfilewarning. It has no effect. I added export CYGWIN=nodosfilewarning to my .bashrc and doing a echo $CYGWIN in my ssh session confirms it is indeed getting set; yet again, it has no effect finally, I noted that when not doing my own export that CYGWIN contains "nontsec binmode" (no quotes), so I tried: export CYGWIN="nodosfilewarning nontsec binmode" in my .bashrc and still no dice. Older versions of CopSSH didn't have this issue. How can I actually override this error? I have a lot of scripts that already use windows-style paths, and I'd rather not change them if possible.

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• How do I troubleshoot a segfault in Ubuntu that occurs when typing a bogus command?

  - by Alan

  We've got a production server running Ubuntu 11.10. We're encountering segfaults that appear under various conditions. The simplest reproducible case is when we login to an ssh session as our administrative user and enter a bogus command. You'd expect the standard "command not found" error message. Instead, we get a segfault in python. The user's default shell is /bin/bash. For example: $ asdf Segmentation fault Info from /var/log/syslog: Jul 6 15:39:20 PROD001 kernel: [2155960.605695] python[7873]: segfault at 0 ip (null) sp 00007fffd030b808 error 14 in python2.7[400000+233000] Some details about the server: $ uname -a Linux PROD001 3.0.0-16-server #29-Ubuntu SMP Tue Feb 14 13:08:12 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux $ cat /etc/issue Ubuntu 11.10 \n \l Before we ask the IT department to reinstall the O.S., I'd like to understand what got us here. The system and/or this particular user's environment is suspect. Many people have touched this server over the past year, so I'm wondering if it is missing libraries, incorrectly installed packages, etc. I'm hoping that if we can understand what's going wrong in this case, it will help explain why we're getting segfaults in a couple of other scenarios. Any tips on troubleshooting this segfault will be appreciated!

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• Ubuntu 10.04 Server on Hyper-V Server R2 has sluggish install and command line

  - by Paul Hobart

  I've installed Ubuntu Server 10.04 (64 bit) on a Hyper-V Server R2. I've encountered two issues that I think are related: Very slow install Very slow command prompt The text-mode installer goes through a series of text-based prompt windows. It takes 7-10 seconds for each of these windows to draw on the screen. The end result is that every time I answer a prompt and hit enter I wait for 15 seconds while the screen redraws line by line. I can literally see each line of text being drawn (like the old 300 baud modems days). Once done installing, scrolling on the command line is super slow. For instance, if a simple command, like "ls", causes the screen to scroll, it will scroll very slowly. This happens on a fresh install. The server functions as a LAMP server and an OpenSSH server, but that's it (I don't even have any Virtual Hosts set up yet). AND this only happens on the Virtual Machine console. I access the console through Hyper-V Manager and don't have this problem on any of my other Virtual Machines. Also, this problem does NOT happen when accessing a shell through OpenSSH. How can I improve this performance issue?

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• Hyperic HQ- Monitor process statistics for 50+ processes on Linux machine

  - by Chris

  Is there an easy way to get metrics on all processes that start with the letters XYZ? I have about 80 processes that I have to monitor individually that all start with the prefix XYZ. I have created a query using the sigar shell: ps State.Name.sw=XYZ, which will give me a list of the processes that I want. What I need to do is define this list of processes through said query and collect and track statistics from the Process service: http://support.hyperic.com/display/hypcomm/Process+service What I need is 3 or 4 key statistics for each of the XYZ processes defined by my query to show up as graphs in the web front end. Note: Hyperic HQ server is installed on a windows machine and I'm monitoring a Linux box via an agent. Thanks, Chris Edit: Here is my try at a plugin that may give me what I want, but it's not being inventoried/detected by the Hyperic web UI. Simply pointing me to one of Hyperic's tutorials won't do. Thanks. <!DOCTYPE plugin [ <!ENTITY process-metrics SYSTEM "/pdk/plugins/process-metrics.xml">]> <plugin> <server name="ABCStats"> <config> <option name="process.query" description="Process Query" default="State.Name.sw=XYZ"/> </config> <metric name="Availability" alias="Availability" template="sigar:Type=ProcState,Arg=%process.query%:State" category="AVAILABILITY" indicator="true" units="percentage" collectionType="dynamic"/> &process-metrics; <plugin type="autoinventory"/> <plugin type="measurement" class="org.hyperic.hq.product.MeasurementPlugin"/> </server> </plugin>

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• Server reporting incorrect mime type for css files

  - by Becky

  We have a VPS server that we host our websites on. I have written a CMS using CodeIgniter. On one of the interfaces, I am attempting to upload a css file to the system. This worked correctly when we had it hosted on shared hosting. Since we've moved it to the VPS, I am getting an "incorrect filetype" error. It all comes down to the fact that the server is reporting a mime type of text/x-c for the css file rather than text/css. I logged in via shell and ran the following command on an existing valid css file (to make sure it wasn't an issue with either CodeIgniter or with php). file --brief --mime 'filename.css' 2>&1 The server gave me the following in response to my command: text/x-c; charset=us-ascii My question ... is there some sort of server setting that I need to tweak to get the server to correctly identify the css file as text/css? Do I just have to add a mime type for the css files to the server? I found the mime types file (etc/mime.types), and it just hase video types and a couple other that I have no idea what they are. There is nothing in there for css or images or html files. Unless I'm looking in the wrong spot. I'm not a server person, so I'm hoping someone can help me out. Some server specs: Apache/2.2.22 (Unix) php 5.3.13 Server API = CGI/FastCGI the fileinfo php extension appears to be disabled

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• (solved) `ssh foo "<command/>"` not loading remote aliases?

  - by TomRoche

  summary: Why does this fail $ ssh foo 'R --version | head -n 1' bash: R: command not found but this succeeds $ ssh foo 'grep -nHe 'bashrc' ~/.bash_profile' /home/me/.bash_profile:3:# source the users .bashrc if it exists /home/me/.bash_profile:4:if [ -f "${HOME}/.bashrc" ] ; then /home/me/.bash_profile:5: source "${HOME}/.bashrc" $ ssh foo 'grep -nHe "\WR\W" ~/.bashrc' /home/me/.bashrc:118:alias R='/share/linux86_64/bin/R' $ ssh foo '/share/linux86_64/bin/R --version | head -n 1' R version 2.14.1 (2011-12-22) ? details: I am a (rootless) user on 2 clusters. One uses environment modules, so any given server on that cluster can provide (via module add) pretty much the same resources. The other cluster, on which I must also unfortunately work, has servers managed individually, so I get in the habit of doing, e.g., EXEC_NAME='whatever' for S in 'foo' 'bar' 'baz' ; do ssh ${SERVER} "${EXEC_NAME} --version" done This works fine for packages installed normally/consistently, but often (for reasons unknown to me) packages are not: e.g. (compare alias below to alias above), $ ssh bar 'R --version | head -n 1' bash: R: command not found $ ssh bar 'grep -nHe 'bashrc' ~/.bash_profile' /home/me/.bash_profile:3:# source the users .bashrc if it exists /home/me/.bash_profile:4:if [ -f "${HOME}/.bashrc" ] ; then /home/me/.bash_profile:5: source "${HOME}/.bashrc" $ ssh bar 'grep -nHe "\WR\W" ~/.bashrc' /home/me/.bashrc:118:alias R='/share/linux/bin/R' $ ssh bar '/share/linux86_64/bin/R --version | head -n 1' R version 2.14.1 (2011-12-22) Using aliases copes well with these install differences when I interactively shell into the server, but fails when I try to script ssh commands (as above); i.e., # interactively $ ssh foo ... foo> R --version calls my alias for R on remote host=foo, but # scripting $ ssh foo 'R --version' doesn't. What do I need to do to make ssh foo "<command/>" load my aliases on the remote host?

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• supervisord launches with wrong setuid

  - by friendzis

  I am trying to test a pilot system with nginx connecting to uwsgi served application controlled by supervisord running on ubuntu-server. Application is written in python with Flask in virtualenv, although I'm not sure if that is relevant. To test the system I have created a simple hello world with flask. I want nginx and uwsgi both to run as www-data user. If I launch uwsgi "manually" from root shell I can see uwsgi processes runing as appropriate user (www-data). Although, if I let supervisor launch the application something strange happens - uwsgi processes are runing under my user (friendzis). Consequently, socket file gets created under wrong user and nginx cannot communicate with my applicaion. note: the linux server runs as Hyper-V VM, under Windows Server 2008. Relevant configuration: [uwsgi] socket = /var/www/sockets/cowsay.sock chmod-socket = 666 abstract-socket = false master = true workers = 2 uid = www-data gid = www-data chdir = /var/www/cowsay/cowsay pp = /var/www/cowsay/cowsay pyhome = /var/www/cowsay module = cowsay callable = app supervisor [program:cowsay] command = /var/www/cowsay/bin/uwsgi -s /var/www/sockets/cowsay.sock -w cowsay:app directory = /var/www/cowsay/cowsay user = www-data autostart = true autorestart = true stdout_logfile = /var/www/cowsay/log/supervisor.log redirect_stderr = true stopsignal = QUIT I'm sure I'm missing some minor detail, but I'm unable to notice it. Would appreciate any suggestions.

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• Removing SCIM input method as default from gnome terminal

  - by Mark

  Hello - I am recently back into the Linux world after about a 10 year absence. While I can find my way around most things, terminals and desktop managers are different than I remember. One of the biggest problems that I am encountering today is that when running a gnome terminal (this is Suse 10.0 enterprise), I'm getting behavior in the window that I don't want. Specifically, when I type, my typing is underlined as if something is trying to spell check my window. Further, it seems as if when running vi or less, my keystrokes are only processed by these apps when I hit 'return'. I.e. if I'm running less and want to go back a page, I'll hit b, but nothing happens until I hit 'return'. I seem to have tracked this down to the 'input method". Right clicking in the Gnome terminal allows me to set my input method to one of a dozen values. It seems that currently, it's set to "SCIM Input Method". If I then select 'default' or 'X Input Method', apps (i.e. things like less, vi, and even the bash shell) behave as I would expect. Can someone tell me a) what is this SCIM input method b) how can I make it so that it is not the default? I've poked around various configuration files in my home directory as well as in /etc, but I can't see to find how this is set. I guess as a final question, can I just get rid of SCIM? Or is that tied into the window manager somehow? I do appreciate any clarifications that I can get. Thanks.

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• Are relative-path symlinks reliable on Rackspace Cloud Sites?

  - by Jakobud

  Rackspace's Cloud Sites have a lot of stupid limitations. For example, no SSH (in or out), no shell, no RSYNC, etc... (even through cron). Recently I learned that you can't reliably use symlinks in Cloud Sites. Apparently this is because the absolute path of your sites could change at any moment, since it's a shared host environment split up between many disks/servers. I guess different account's sites get moved from disk to disk whenever Rackspace decides to. Supposedly to increase efficiency across the board. So after talking with a Rackspace tech, he said they cannot guarantee that symlinks would always work. Obviously this is because if you have a symlink that use's an absolute path like this: //mnt/disk-34566/home/user34566/files/sites/www.mysite.com/mydir If you files go moved to a different disk (or whatever they do), then the absolute path would be different and the link would now be broken. That makes sense. So next, I asked the Rackspace tech if relative path symlinks were reliable. So if I have the following link: files/sites/www.mysite.com/mylink --> ../www.myothersite.com/anotherdir You can see that the symlink simply points to a nearby directory's sub-directory. He said they cannot guarantee that even those would always work either. Since it uses a relative path to another nearby directory I'm not sure how it could ever break from something Rackspace would do. Do relative symlinks somehow rely on absolute paths underneath? Or is Rackspace using some weird custom filesystem where they will break from absolute path changes? It seems like a relative-path symlink would be fine and would only break if the user did something to mess up the directories involved. But when the tech's say that they "don't officially support symlinks of any kind" that makes me hesitant to use them for large commercial websites in Cloud Sites. Can anyone with Rackspace experience give input on this topic?

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• needing storage integrity (write/read) test - for BASH

  - by Mr. Bash

  In need of shell scripts / bash commands to verify data integrity of local harddrives, usb-drives, etc, ... Like the famous www.heise.de/download/h2testw; or something that is at least common within repositories. (h2testw writes a specific datastring over and over onto the medium, then reads it again to verify if it was written correctly and displays write/read time/speed.) please no dd if=/dev/random of=/dev/sdx bs=1k && dd if=/dev/sdx of=/dev/null bs=1k since it won't verify if everything was written correctly. It is only a test if read/write is successful to the device. So far, I'm not too happy with badblocks -w -v /dev/sdx1 either, since it seems rather slow and I don't know what it exactly writes, and if it considers wear-leveling on flash media. There is also a program named F3 http://oss.digirati.com.br/f3/ that needs to be compiled. Designed after h2testw, the concept sounds interesting, i'd just rather have it as a ready to go bash script.

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• Hyperic HQ- Monitor process statistics for 50+ processes on Linux machine

  - by Chris

  Is there an easy way to get metrics on all processes that start with the letters XYZ? I have about 80 processes that I have to monitor individually that all start with the prefix XYZ. I have created a query using the sigar shell: ps State.Name.sw=XYZ, which will give me a list of the processes that I want. What I need to do is define this list of processes through said query and collect and track statistics from the Process service: http://support.hyperic.com/display/hypcomm/Process+service What I need is 3 or 4 key statistics for each of the XYZ processes defined by my query to show up as graphs in the web front end. Note: Hyperic HQ server is installed on a windows machine and I'm monitoring a Linux box via an agent. Thanks, Chris Edit: Here is my try at a plugin that may give me what I want, but it's not being inventoried/detected by the Hyperic web UI. Simply pointing me to one of Hyperic's tutorials won't do. Thanks. <!DOCTYPE plugin [ <!ENTITY process-metrics SYSTEM "/pdk/plugins/process-metrics.xml">]> <plugin> <server name="ABCStats"> <config> <option name="process.query" description="Process Query" default="State.Name.sw=XYZ"/> </config> <metric name="Availability" alias="Availability" template="sigar:Type=ProcState,Arg=%process.query%:State" category="AVAILABILITY" indicator="true" units="percentage" collectionType="dynamic"/> &process-metrics; <plugin type="autoinventory"/> <plugin type="measurement" class="org.hyperic.hq.product.MeasurementPlugin"/> </server> </plugin>

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• Elevating UAC via .bat file?

  - by jslaker

  Pretty straightforward one that I'm having trouble finding an answer to. serverfault previously helped me with finding a way to automate Windows updates without using WSUS. It's working fantastically, but to run it over the network, you have to first mount a shared drive. That's pretty simple XP since you just mount the drive and run the updater. On Vista and W7, though, this all has to be done with elevated privileges to work correctly. The UAC account can't see network drives mounted by the regular user, so in order to get everything working, I have to mount the share via net use from an escalated shell. I'd like to automate mounting this share and launching the updater via a simple .bat file. I could probably just instruct everybody to right click "Run as Administrator" on the .bat file, but I'd like to keep things as simple as possible and have the .bat automatically prompt the user to escalate their privileges. Since these computers don't belong to us, I can't count on anything like Powershell being installed, so that rules any solution along those lines out and pretty much have to rely on things that would be included in an RTM Vista install. I'm hoping I'm mostly missing something obvious here. :)

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• SFTP only works occasionally

  - by 82din

  I suddenly get this error using SFTP: Status: Connecting to example.com... Response: fzSftp started Command: open "[email protected]" 22 Command: Pass: ********* Status: Connected to example.com Status: Retrieving directory listing... Command: pwd Response: Current directory is: "/root" Command: ls Status: Listing directory /root Error: Connection timed out Error: Failed to retrieve directory listing I tried using FileZila, Cyberduck, Shell (Terminal), same result. However, it worked fine today (just a few seconds) in Passive mode. I guess something changed in my network, so I have tried both: Active and Passive mode: Connecting to probe.filezilla-project.org Response: 220 FZ router and firewall tester ready USER FileZilla Response: 331 Give any password. PASS 3.6.0.2 Response: 230 logged on. Checking for correct external IP address Retrieving external IP address from http://checkip.dyndns.org:8245/ Checking for correct external IP address IP <external IP> big-bf-ccc-f Response: 200 OK PREP 49565 Response: 200 Using port 49565, data token 380352881 PORT 186,15,222,5,193,157 Response: 200 PORT command successful LIST Response: 150 opening data connection Response: 503 Failure of data connection. Server sent unexpected reply. Connection closed Because I'm working behind a router, I get my external IP from http://checkip.dyndns.org:8245/ I also tested different range of ports.

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