Nodes not Setting Hostname When Using /etc/hosts for Static IP’s in Perceus

Recently I’ve been working on moving a cluster from assigning node IP’s with DHCP to statically defined IP’s, in order to work around Torque/Moab not starting when it is unable to resolve the name of every node.

To do this, I entered all of the relevant information into the /etc/hosts file. But, after doing this and rebooting the nodes they were no longer automatically setting their hostname which had previously been retrieved from the DHCP server. Instead it would look like the following after logging in:

[root@localhost ~]#

This can be solved by enabling the Perceus hostname module.

perceus module activate hostname

After enabling this it should like the following when logging into the nodes:

[root@n0000 ~]#

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