cluster agent not capturing transactions

[Kenny.Yu]

The same configs (cluster-agent, and app deployment) are working in an existing k8s cluster.  When I copy (the intention is to move) to a new cluster, the new cluster successfully registers on the appd console, but no tier or transaction show up.

The cluster agent log says:

containermonitoringmodule.go:455 - Either there are no containers discovered or none of the containers are due for registration

and repeats:

agentregistrationmodule.go:145 - Successfully registered agent again DTVUS-IT-DTVCP-EPOCH-Dev-East

The cluster-aget has:

tierNameStrategy: manual
instrumentationRules:
- namespaceRegex: nodejs
tierName: dev-east
instrumentContainer: select
containerMatchString: epoch-awsmw-offerms-dcp   # I verified that this matches the container name.

What am I missing?

[Kenny.Yu · Accepted solution]

An update: Support helped me figure out that the problem was from a version mismatch between the cluster agent, which fetches the latest, and the operator, which has a fixed version tag.