search

sassoftware / viya4-deployment

This project contains Ansible code that creates a baseline in an existing Kubernetes environment for use with the SAS Viya Platform, generates the manifest for an order, and then can also deploy that order into the Kubernetes environment specified.
Apache License 2.0
70 stars 64 forks source link

Question: how do I add more cas nodes/pods #477

Closed biohazd closed 7 months ago

biohazd commented 1 year ago

Hi

I have deployed the EKS cluster and set it to use 2 cas instances(pods). This works great.

how do I add more cas pods to the cluster? Do I edit the terraform/Ansible vars file to increase workers and redeploy ?

jarpat commented 9 months ago

Hey @biohazd,

The answer depends on how your infrastructure is currently configured.

If during infrastructure creation in viya4-iac-aws you configured the max_nodes for your CAS node pool to already be the target number of CAS nodes you desire or greater, all you have to do is update the V4_CFG_CAS_WORKER_COUNT in your ansible-vars.yaml and rerun the viya,install tasks. As more CAS worker pods come up EKS will provision up to max_nodes for the CAS pods to run on.

The Viya deployment does not need to be restarted either to add more workers, see:

Also, see viya4-iac-aws example file for max_nodes setting https://github.com/sassoftware/viya4-iac-aws/blob/main/examples/sample-input.tfvars#L48

Alternatively, if your max_nodes is not enough to reach the number of CAS nodes you desire. I would recommend doing the following.

  1. Run the cron job to stop the Viya deployment https://documentation.sas.com/?cdcId=sasadmincdc&cdcVersion=v_046&docsetId=calchkadm&docsetTarget=p17xfmmjjkma1dn1b5dcx3e5ejxq.htm#p0butgo7gtfyi0n14umtfv0voydt
  2. In your terraform.tfvars file from the viya4-iac-aws project adjust max_nodes for the CAS node pool
  3. Run terraform apply to apply these changes
  4. Run the cron job to start the Viya deployment https://documentation.sas.com/?cdcId=sasadmincdc&cdcVersion=v_046&docsetId=calchkadm&docsetTarget=p17xfmmjjkma1dn1b5dcx3e5ejxq.htm#p0butgo7gtfyi0n14umtfv0voydt
  5. Update the V4_CFG_CAS_WORKER_COUNT in your ansible-vars.yaml to your desired count and rerun the viya,install tasks.
jarpat commented 7 months ago

Marking as stale/inactive. If there are further questions please open a new GitHub issue.