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How can I manually change my server's hostname?

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  • How can I manually change my server's hostname?

    This solution will work on all RH-based operating systems.

    1. Login to your server as 'root' and run
    #vi /etc/hosts - this will open up the /etc/hosts file using VIM editor
    2. Change the values after your server's main IP address to reflect your desired hostname. You must put in a valid hostname, one that will resolve as one of the options. Example:
    127.0.0.1 localhost
    1.1.1.1 myhostname.mydomain.com myhostname
    3. After you are finished, save the file by running
    :wq
    4. When you're back at the prompt, run
    #vi /etc/sysconfig/network
    5. In the network file, next to your IP, change the current value with your new valid hostname (myhostname.mydomain.com)
    6. When you're done, save the file
    :wq

    If the hostname did not take effect automatically (as it should), issue a server wide reboot for these effects to take change
    #shutdown -r now


    Wait for the machine to come back up and double check your new hostname by running the #hostname command.
    www.AYKsolutions.com
    From Shared to Dedicated
    Professional. Painless. Polite.

  • #2
    Just to note, you can also check to make sure that /proc/sys/kernel/hostname has also been updated to the new hostname.
    www.AYKsolutions.com
    From Shared to Dedicated
    Professional. Painless. Polite.

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