Adding a compute node to a deployed topology

After deploying your topology, you can add a compute node system to your deployment. This does not apply to the Minimal topology.

1. Log in to the deployment system as the root user.
   This is the system where IBM Cloud Manager with OpenStack was installed.
2. Create a node specific attribute file. This step is only required when the new compute node requires different attributes from those defined in the environment for the topology. For more information on node specific attribute files, see the applicable Deploying a test or production cloud section for your compute node type.
3. Deploy the new compute node. Change the following in the command below.
   • node-fqdn: Set to the fully qualified domain name of the node system. You can also set to the public IP address, private IP address, or hostname.
   • node-run-list: Set the node run list to be the same as the run list for an existing compute node in the topology. You can look in the topology JSON file to see the run list for an existing compute node. For example, if the run list is "runlist": ["role[ibm-os-compute-node-kvm]","role[ibm-os-prs-compute-node]"], then set node-run-list to 'role[ibm-os-compute-node-kvm],role[ibm-os-prs-compute-node]'.
   • node-ssh-password: SSH root user password for the node. To use an SSH identity file instead of a password, use the -i node-ssh-identity option, where node-ssh-identity is the SSH identity file for the node.
   • node-attribute-file: Set to the node specific attribute file created in step 2. Remove this option if not required.
   • topology-file: Set to the fully qualified path and file name of the topology JSON file used to deploy the other nodes in the topology. The command updates the topology file with the added compute node information.

   knife os manage deploy node node-fqdn 'node-run-list' -P node-ssh-password --attribute-file node-attribute-file --topology-file topology-file

   For example, knife os manage deploy node hostname.my.company.com 'role[ibm-os-compute-node-kvm],role[ibm-os-prs-compute-node]' -P passw0rd --attribute-file /root/clouds/hostname_attributes.json --topology-file /root/clouds/my_topology.json

   Note: For more information on the knife os manage deploy node command and the topology file, see Commands.
4. After the deployment completes, you can check the status of the IBM Cloud Manager with OpenStack services, see Checking status of OpenStack services.