after hostname change, syslogd still output previous hostname to messages file

tiger2000 · 07-21-2009, 02:33 AM

Dear All,

We're running two servers : CentOS 4.4 and RedHat ent. 5.1, both of them have same issues :

after we change to another hostname, the syslog (/var/log/messages) still keeps the previous hostname.

the way we're change hostname are :
/etc/hosts
/etc/sysconfig/network
service network restart
(actually, we've reboot this server several times)

but we still found the log messages are still in previous hostname. (in /var/log/messages)

any advice on this? Thanks.

jhwilliams · 07-21-2009, 02:49 AM

Code:

root@salmon:~#echo "foo" > /etc/hostname 
root@salmon:~#hostname
foo
root@salmon:~#echo "bar" > /etc/hostname 
root@salmon:~#hostname
bar

Tinkster · 07-21-2009, 03:20 AM

Quote:

Originally Posted by tiger2000

the way we're change hostname are :
/etc/hosts
/etc/sysconfig/network
service network restart
(actually, we've reboot this server several times)

but we still found the log messages are still in previous hostname. (in /var/log/messages)

any advice on this? Thanks.

I hope you're not expecting historical lines in the
logs to change the hostname entry? That won't happen.

Cheers,
Tink

tiger2000 · 07-22-2009, 09:36 PM

I've fingure out the reason, and it looks like I should take this action before 'service syslog restart' .

echo "my.new.host.name" > /proc/sys/kernel/hostname

there's `hostname my.new.host.name` command seems doing the same thing.

Thanks.