Provide details when logging the error "Failed to retrieve client pool. "

[anurag-work]

Description

What happened:
Cluster was reconfigured with a different name . Some old nodes that were not re-configured continue to try to connect to the old cluster
What you expected to happen:
Error log prints details about the node that is trying to access . Like an IP address or hostname or some other identifying information.

Reproduction Steps

As minimally and precisely as possible, describe step-by-step how to reproduce the problem.

1. Setup a cluster and add a node to the cluster
2. Reconfigure the cluster with the FQDN/IP but change the cluster name. Don't reconfigure the node to use the new cluster
3. New cluster is full of error messages but with no information regarding the node .

Failed to retrieve client pool. Client cluster "old-cluster-name", target cluster "new-cluster-name"

Server Details

• Teleport version (run teleport version):6.2.3
• Server OS (e.g. from /etc/os-release):
• Where are you running Teleport? (e.g. AWS, GCP, Dedicated Hardware):
• Additional details:

In environments where teleport is not the only method of access , some servers might have stale teleport configurations and it is not possible to find the offending server.

[qixiangyang]

same question