Ensure Integrity Monitoring for Shielded GKE Nodes is Enabled

Description:

Enable Integrity Monitoring for Shielded GKE Nodes to be notified of inconsistencies during the node boot sequence.

Rationale:

Integrity Monitoring provides active alerting for Shielded GKE nodes which allows administrators to respond to integrity failures and prevent compromised nodes from being deployed into the cluster.

None.

Once a Node pool is provisioned, it cannot be updated to enable Integrity Monitoring. You must create new Node pools within the cluster with Integrity Monitoring enabled

Using Google Cloud Console

1. Go to Kubernetes Engine by visiting https://console.cloud.google.com/kubernetes/list
2. From the list of clusters, click on the cluster requiring the update and click ADD NODE POOL
3. Ensure that the 'Integrity monitoring' checkbox is checked under the 'Shielded options' Heading.
4. Click SAVE.

You will also need to migrate workloads from existing non-conforming Node pools to the newly created Node pool, then the non-conforming pools.

Using Command Line

To create a Node pool within the cluster with Integrity Monitoring enabled, run the following command:

gcloud beta container node-pools create [NODEPOOL_NAME]
--cluster [CLUSTER_NAME] --zone [COMPUTE_ZONE]
--shielded-integrity-monitoring

You will also need to migrate workloads from existing non-conforming Node pools to the newly created Node pool, then delete the non-conforming pools.