In this post, i will show you the basic guides on how to change the hostname on linux CentOS 5.8 server. Assumed that you have root account access on this CentOS server and this steps may working on RHEL 6, RHEl 5, CentOS 5.5, CentOS 5.6, CentOS 5.7, CentOS 6.0, CentOS 6.1 and CentOS 6.2.
1. Check current hostname :
[root@localhost ~]# hostname localhost.localdomain
2. Modify “/etc/sysconfig/network” to change hostname :
[root@localhost ~]# vi /etc/sysconfig/network
NETWORKING=yes NETWORKING_IPV6=no HOSTNAME=localhost.localdomain
Change the hostname to the following :
NETWORKING=yes NETWORKING_IPV6=no HOSTNAME=centos58.ehowtuff.local
Alternatively, you can execute the following command :
[root@localhost ~]# hostname centos58.ehowtuff.local
3. Change host file :
[root@localhost ~]# vi /etc/hosts
# Do not remove the following line, or various programs # that require network functionality will fail. 127.0.0.1 localhost.localdomain localhost ::1 localhost6.localdomain6 localhost6 127.0.0.1 centos58.ehowstuff.local centos58
4. Reboot the server.
[root@localhost ~]# reboot