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Changing Hostname Fedora - CentOS

Submitted by ggarron on Thu, 02/08/2007 - 01:12.

Once I have a problem with a CentOS server (Could be the same on RedHat based). The HOSTNAME given on the instalation was not the reverse lookup name.

I solved with the help of the linux list, here is how.

I edited the /etc/hosts

[root@ns1 ~]# cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 ns1.somedomain.com ns1 localhost.localdomain localhost

and also make sure that the info on /etc/sysconfig/network is the same.

[root@ns1 ~]# cat /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=ns1.somedomain.com

and on the reverse lookup zone, you should have assigned

ns1.somedomain.com to the IP of the Eth in the server you have just configured.

If you do not have this way, your email server could probably not send emails from itself.

hope could be usefull.

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