This operation guide describes how to configure the host name of the DNS.

Conditions

• Log in to the server as user root through telnet.
• Please note if there are any alarms which alarm object is old hostname, please manully clear those alarms after the hostname changed to the new one.Because those alarms object (hostname) was changed, they can not be automatically cleared
• If the file to be modified is read-only, run the wq! command to save the file forcibly after the modification.

1. Check the host name of the server.

   # hostname

2. Edit the /etc/hosts file to change the existing host name to a new one.

   # TERM=vt100; export TERM # vi /etc/hosts

3. Edit the /etc/nodename file to change the existing host name to a new one.

   # vi /etc/nodename

4. Check whether the maintenance dual plane is configured. Then, determine whether to modify the corresponding file.
   1. If maintenance dual plane is configured, proceed with the next step.

      Edit the files /etc/hostname.ce0 and /etc/ hostname.ce2 to change the existing host names to new ones.

      # vi /etc/hostname.ce0 # vi /etc/hostname.ce2

   2. If maintenance dual plane is not configured, proceed with the next step.

      Modify only the /etc/hostname.ce0 file.

      # vi /etc/hostname.ce0 

      http://localhost:7904/pages/31185199/02/31185199/02/resources/public_sys-resources/icon-note.gif NOTE:

      • If the /etc/hostname.ce0 and /etc/hostname.ce2 files record IP addresses, you need not modify the two files.
      • In the files /etc/hostname.ce0 and /etc/hostname.ce2, no space is allowed at the beginning of each line of content.
5. Check the correlation between the /etc/inet/ipnodes and /etc/hosts files.
   1. Run the following command to check the correlation between the /etc/inet/ipnodes and / etc/inet/hosts files.

      # ls -al /etc/inet/ipnodes

      If the command result contains /etc/inet/ipnodes -> ./hosts, it indicates that the two files are correlated, Then, go to5.b.

      If the command result does not contain /etc/inet/ipnodes -> ./hosts, it indicates that the two files are not correlated.Then, go to

   2. Run the following command to check the correlation between the /etc/hosts and /etc/inet/ hosts files.

      # ls -al /etc/hosts

      If the command result contains /etc/hosts -> ./inet/hosts, it indicates that the /etc/hosts and /etc/inet/hosts files are correlated, and thus the /etc/hosts and /etc/ inet/ipnodes files are also correlated Then, go to7.

      If the command result does not contain /etc/hosts -> ./inet/hosts, it indicates that the /etc/hosts and /etc/inet/hosts files are not correlated, and thus the / etc/hosts and /etc/inet/ipnodes files are not correlated. Then, go to6.

6. Edit /etc/inet/ipnodes to change the previous host name to the new host name.

   # vi /etc/inet/ipnodes

7. Rename the host name directory in the /var/crash directory, and then change the previous host name directory to the new host name directory.

   # cd /var/crash # mv old host name new host name

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