Deployment and migration scenarios for CP server

CP server deployment and migration scenarios describes the supported deployment and migration scenarios, as well as the required procedures to be performed on the VCS cluster and CP server node or cluster.

CP server deployment and migration scenarios

Scenario

CP server

VCS cluster

Action required

Setup of CP server  

New CP server 

New VCS cluster using CP server as coordination point 

On the designated CP server, perform the following tasks: 

  1. Prepare to configure the new CP server.
  2. Configure the new CP server.

On the VCS cluster nodes, configure server-based I/O fencing. 

See the Veritas Cluster Server Installation Guide for the procedures. 

Add a new VCS cluster to an existing and operational CP server 

Existing and operational CP server 

New VCS cluster 

On the VCS cluster nodes, configure server-based I/O fencing. 

See the Veritas Cluster Server Installation Guide for the procedures. 

Replace the coordination point from an existing CP server to a new CP server 

New CP server 

Existing VCS cluster using CP server as coordination point 

On the designated CP server, perform the following tasks: 

  1. Prepare to configure the new CP server.
  2. Configure the new CP server.
  3. Prepare the new CP server for use by the VCS cluster

See the Veritas Cluster Server Installation Guide for the procedures. 

On the VCS cluster nodes run the vxfenswap command to move to replace the CP server.  

See Replacing coordination points for server-based fencing in an online cluster

Replace the coordination point from an existing CP server to an operational CP server 

Operational CP server 

Existing VCS cluster using CP server as coordination point 

On the designated CP server, prepare to configure the new CP server manually. 

See the Veritas Cluster Server Installation Guide for the procedures. 

On the VCS cluster run the vxfenswap command to move to replace the CP server: 

See Replacing coordination points for server-based fencing in an online cluster

Enabling fencing in a VCS cluster with a new CP server 

Note: This procedure incurs application downtime on the VCS cluster. 

New CP server 

Existing VCS cluster with fencing configured in disabled or scsi3 mode 

On the designated CP server, perform the following tasks: 

  1. Prepare to configure the new CP server.
  2. Configure the new CP server.
  3. Prepare the new CP server for use by the VCS cluster

See the Veritas Cluster Server Installation Guide for the procedures. 

On the VCS cluster nodes, perform the following: 

  1. Stop all applications, VCS, and fencing on the VCS cluster.
  2. To stop VCS, use the following command (to be run on all the VCS cluster nodes):

    hastop -local

  3. Stop fencing using the following command:

    # /etc/init.d/vxfen stop

  4. Reconfigure I/O fencing on the VCS cluster.

    See the Veritas Cluster Server Installation Guide for the procedures.

Refreshing registrations of VCS cluster nodes on coordination points without incurring application downtime 

Operational CP server 

Existing VCS cluster using the CP server as coordination point 

On the VCS cluster run the vxfenswap command to refresh the keys on the CP server. 

See Refreshing registration keys on the coordination points for server-based fencing