This post describes how to change / modify host name / hostname under Redhat / CentOS.
1. Display Hostname
command:
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hostname |
you may see the output like:
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lab1.tecbar.net |
2. Change hostname
Edit /etc/sysconfig/network (should be root/sudoer user)
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sudo vi /etc/sysconfig/network |
change HOSTNAME to what you need and then save it. For example,
HOSTNAME=lab2.tecbar.net
Execute the following command:
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sudo hostname lab2.tecbar.net |
Then verify it, type command:
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hostname |
3. /etc/hosts (optional)
You can update /etc/hosts too to make sure hostname to IP address mapping is correct.
