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/etc/hostname gets modified on reboot of ubuntu box

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Operating Systems Linux Ubuntu /etc/hostname gets modified on reboot of ubuntu box
# 1  
Old 12-14-2010
/etc/hostname gets modified on reboot of ubuntu box
Hi,
I have a ubuntu box with /etc/hostname entry like abcd-lx . However, if the machine shuts down without a proper shutdown , on reboot, the enter in /etc/hostname looks like %vserverguest%

Also, /etc/hosts gets an invalid entry in place of abcd-lx.

If anyone has any idea, please help!

Thanks,
M
# 2  
Old 12-27-2010
That's strange, it shouldn't change. You can also set the hostname using sysctl, maybe try that

sysctl kernel.hostname=NEW_HOSTNAME
# 3  
Old 12-27-2010
Is this your private machine, or are you using a VPS hoster?
# 4  
Old 12-28-2010
if the problem resists, the (most) final solution is to make a script into but that will write the value you want into /etc/hostname
Use gksudo for a password prompt (because editing suck a file needs extra permissions)
# 5  
Old 12-28-2010
An application is apparently modifying the contents of those file; probably at shutdown? The cleanest way, would be to find the guilty. Perhaps you could temporary rename /etc/hostname and see if someone complains?

The workaround of "rewriting the value in /etc/hostname" shall only work if you do so after the application...

HTH, Loïc
# 6  
Old 12-28-2010
I can't remind the name of the application, but there is a built-in or something application that shows you when a file was modified. I 'd used it 2-3 years ago. You can go find it, and then let it run from start-up till shutdown to see when the name changes. This way you'll find more effectively the guilty.
# 7  
Old 12-29-2010
Perhaps using inotifywait? (utility available in the inotify-tools package)

Cheers, Loïc
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