<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns:p="urn:schemas-microsoft-com:office:powerpoint" xmlns:a="urn:schemas-microsoft-com:office:access" xmlns:dt="uuid:C2F41010-65B3-11d1-A29F-00AA00C14882" xmlns:s="uuid:BDC6E3F0-6DA3-11d1-A2A3-00AA00C14882" xmlns:rs="urn:schemas-microsoft-com:rowset" xmlns:b="urn:schemas-microsoft-com:office:publisher" xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" xmlns:c="urn:schemas-microsoft-com:office:component:spreadsheet" xmlns:odc="urn:schemas-microsoft-com:office:odc" xmlns:oa="urn:schemas-microsoft-com:office:activation" xmlns:html="http://www.w3.org/TR/REC-html40" xmlns:q="http://schemas.xmlsoap.org/soap/envelope/" xmlns:rtc="http://microsoft.com/officenet/conferencing" xmlns:D="DAV:" xmlns:Repl="http://schemas.microsoft.com/repl/" xmlns:mt="http://schemas.microsoft.com/sharepoint/soap/meetings/" xmlns:x2="http://schemas.microsoft.com/office/excel/2003/xml" xmlns:ppda="http://www.passport.com/NameSpace.xsd" xmlns:ois="http://schemas.microsoft.com/sharepoint/soap/ois/" xmlns:dir="http://schemas.microsoft.com/sharepoint/soap/directory/" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns:dsp="http://schemas.microsoft.com/sharepoint/dsp" xmlns:udc="http://schemas.microsoft.com/data/udc" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:sub="http://schemas.microsoft.com/sharepoint/soap/2002/1/alerts/" xmlns:ec="http://www.w3.org/2001/04/xmlenc#" xmlns:sp="http://schemas.microsoft.com/sharepoint/" xmlns:sps="http://schemas.microsoft.com/sharepoint/soap/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:udcs="http://schemas.microsoft.com/data/udc/soap" xmlns:udcxf="http://schemas.microsoft.com/data/udc/xmlfile" xmlns:udcp2p="http://schemas.microsoft.com/data/udc/parttopart" xmlns:wf="http://schemas.microsoft.com/sharepoint/soap/workflow/" xmlns:dsss="http://schemas.microsoft.com/office/2006/digsig-setup" xmlns:dssi="http://schemas.microsoft.com/office/2006/digsig" xmlns:mdssi="http://schemas.openxmlformats.org/package/2006/digital-signature" xmlns:mver="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns:mrels="http://schemas.openxmlformats.org/package/2006/relationships" xmlns:spwp="http://microsoft.com/sharepoint/webpartpages" xmlns:ex12t="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:ex12m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:pptsl="http://schemas.microsoft.com/sharepoint/soap/SlideLibrary/" xmlns:spsl="http://microsoft.com/webservices/SharePointPortalServer/PublishedLinksService" xmlns:Z="urn:schemas-microsoft-com:" xmlns:st="" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv=Content-Type content="text/html; charset=us-ascii"> <meta name=Generator content="Microsoft Word 12 (filtered medium)"> <style>  </style>  </head> <body lang=EN-US link=blue vlink=purple> <div class=Section1> Hi,<o:p></o:p> <o:p> </o:p> I am still feeling my way around RHCS, and today I added a dummy fencing script just to see how fencing agents are called.<o:p></o:p> <o:p> </o:p> This script just says hello to syslog, and dumps the environment to a file in /tmp, and returns "Done" and a success code to fenced:<o:p></o:p> <o:p> </o:p> cat fence_ack_null<o:p></o:p> #! /usr/bin/perl -w<o:p></o:p> <o:p> </o:p> #<o:p></o:p> # Fencing agent that always succeeds<o:p></o:p> #<o:p></o:p> <o:p> </o:p> use Sys::Syslog;<o:p></o:p> <o:p> </o:p> my $dump = "/tmp/fence_ack_null.dat";<o:p></o:p> <o:p> </o:p> open( OUT, ">>$dump" ) || die "Failed: $!";<o:p></o:p> <o:p> </o:p> print OUT "=" x 80, "\n", scalar(localtime ), "\n";<o:p></o:p> foreach my $a ( sort keys %ENV ) {<o:p></o:p> print OUT "$a => $ENV{$a}\n";<o:p></o:p> }<o:p></o:p> <o:p> </o:p> print OUT "fence_ack_null @ARGV\n";<o:p></o:p> <o:p> </o:p> close(OUT);<o:p></o:p> <o:p> </o:p> openlog( 'fence_ack_null', 'cons,pid', 'user' );<o:p></o:p> syslog( 'info', 'fence_ack_null called');<o:p></o:p> closelog();<o:p></o:p> <o:p> </o:p> <o:p> </o:p> print "Done\n";<o:p></o:p> exit 0;<o:p></o:p> <o:p> </o:p> In the dump of the environment, I was surprised to find items from my environment when I started the cluster:<o:p></o:p> <o:p> </o:p> ================================================================================<o:p></o:p> Tue May 18 09:40:24 2010<o:p></o:p> HOME => /home/martin<o:p></o:p> HOSTNAME => vm-031-rhel64-mw<o:p></o:p> LANG => en_GB<o:p></o:p> LOGNAME => root<o:p></o:p> LS_COLORS => no=00:fi=00:di=00;34:ln=00;36:pi=40;33:so=00;35:bd=40;33;01:cd=40;33;01:or=01;05;37;41:mi=01;05;37;41:ex=00;32:*.cmd=00;32:*.exe=00;32:*.com=00;32:*.btm=00;32:*.bat=00;32:*.sh=00;32:*.csh=00;32:*.tar=00;31:*.tgz=00;31:*.arj=00;31:*.taz=00;31:*.lzh=00;31:*.zip=00;31:*.z=00;31:*.Z=00;31:*.gz=00;31:*.bz2=00;31:*.bz=00;31:*.tz=00;31:*.rpm=00;31:*.cpio=00;31:*.jpg=00;35:*.gif=00;35:*.bmp=00;35:*.xbm=00;35:*.xpm=00;35:*.png=00;35:*.tif=00;35:<o:p></o:p> MAIL => /var/spool/mail/martin<o:p></o:p> PATH => /sbin:/usr/sbin:/bin:/usr/bin<o:p></o:p> PWD => /home/martin<o:p></o:p> SHELL => /bin/bash<o:p></o:p> SHLVL => 1<o:p></o:p> SUDO_COMMAND => /etc/init.d/cman start<o:p></o:p> SUDO_GID => 1003<o:p></o:p> SUDO_UID => 1003<o:p></o:p> SUDO_USER => martin<o:p></o:p> TERM => xterm<o:p></o:p> USER => root<o:p></o:p> USERNAME => root<o:p></o:p> _ => /sbin/fenced<o:p></o:p> fence_ack_null<o:p></o:p> <o:p> </o:p> To my mind, this is a bug in the cluster system. I would expect a daemon process to sanitise its environment to prevent unexpected side effects from creeping in. <o:p></o:p> <o:p> </o:p> Checking /proc/<pid>/environ for the cluster daemons, the following are affected:<o:p></o:p> ccsd<o:p></o:p> groupd<o:p></o:p> fenced<o:p></o:p> dlm_controld<o:p></o:p> gfs_controld<o:p></o:p> clurgmgrd<o:p></o:p> <o:p> </o:p> Which raises a question: is there a bug tracking system for linux-clustering where I can record this issue ?<o:p></o:p> <o:p> </o:p> regards,<o:p></o:p> Martin<o:p></o:p> </div> </body> </html>