CUCM 9.1.2 Changing Just The Host Name

I used the following steps to change all the host names in a cluster that was upgraded to CUCM 9.1.2.

This closely follows the CCO guide for changing host names but a little more concise.

 

hello-my-name-is

– Step 1 –

On each server  check the replication status. I prefer the CLI and the following command.

  • show perf query class “Number of Replicates Created and State of Replication”

– Step 2 –

Validate or Reset DRF services. If any of the DRF services are not active and responsive the name change will fail.

  • utils service stop Cisco DRF Local – all nodes

  • utils service start Cisco DRF Local – all nodes

  • utils service stop Cisco DRF Master -Pub Only

  • utils service start Cisco DRF Master -Pub Only

– Step 3 –

Change DNS if the dns client is enable on the servers

 

– Step 4 –

Publisher Host name change requires changing the Cluster Publisher Host Name setting on each node. This can completed via the GUI or CLI

  • set network cluster publisher hostname {host name}

 

– Step 5 –

Now you can change the host name on the server requiring the change.

  • CLI: set network hostname

Note the following scripts will run  as component notification

  • adns_verify.sh
  • clm_notify_hostname.sh
  • drf_notify_hostname_change.py
  • regenerate_all_certs.sh
  • update_idsenv.sh

Note the server will automatically reboot.

– Step 6 –

After the reboot on the node that the host name was changed run  the dropadmin table to clear the syscdr configurations.

  • utils dbreplication dropadmindb

 

– Step 7 –

Reboot all other servers in the cluster, including the Publisher.

 

– Step 8 –

Verify that the name-IP association change

  • utils network host {name}

Note Do not proceed until the change propagates to all nodes.

– Step 9 –

From Publisher force the replication to restart and rebuild the replication connections.

  • utils dbreplication reset all

 

– Step 10 –

Check replication status periodically to ensure all replication get to state 2.

  • show perf query class “Number of Replicates Created and State of Replication”

 

– Step 11 –

Repeat for each node that needs to be renamed.

 

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