[CentOS] logrotate, syslog, and chsh

Jeff Potter jpotter-centos at codepuppy.com
Sun Mar 11 13:17:38 UTC 2007


I'm noticing that logrotate's default configuration for rotating /var/ 
log/secure and /var/log/messages partially fails if root's shell is  
set to /bin/tcsh (via chsh).  (Running on CentOS 4.4;  
logrotate-3.7.1-5.RHEL4).

What seems to be happening is that the logrotate.d/syslog postrotate  
command runs:
	/bin/kill -HUP `cat /var/run/syslogd.pid 2> /dev/null` 2> /dev/null  
|| true

Under bash, this redirects stderr to /dev/null. Under tcsh, this  
produces the error:
	cat: 2: No such file or directory

What happens in this scenario is that the log gets rotated, but  
syslogd does not receive the SIGHUP, so nothing gets logged, at all.  
(i.e. secure and messages are 0 bytes until syslog is kicked).

I'm just going to set the default shell for root back to bash, but I  
wanted to ask the list if there is any general "rule of thumb" that  
root's shell should be bash?

best,
Jeff



More information about the CentOS mailing list