lookup tailscale-operator-testing.tail0225ab.ts.net on 127.0.0.53:53: no such host;

1. From github action
   Run tailscale/github-action@v2
   with:
   oauth-client-id: ***
   oauth-secret: ***
   tags: tag:ci

kubeconfig configured for "tailscale-operator-testing"

helm upgrade --install persistent-test ./persistent-test
--namespace testing
--set database.enabled=true
--wait
--timeout=2m
--debug

Error: Kubernetes cluster unreachable: Get "https://tailscale-operator-testing.tail0225ab.ts.net/version": dial tcp: lookup tailscale-operator-testing.tail0225ab.ts.net on 127.0.0.53:53: no such host

This was working earlier today.

2. Kubectl with the same command is fine when running from local machine:
   tailscale configure kubeconfig tailscale-operator-testing
   kubeconfig configured for "tailscale-operator-testing"
   helm upgrade --install persistent-test ./persistent-test
   --namespace testing
   --set database.enabled=true
   --wait
   --timeout=2m
   --debug

Release "persistent-test" has been upgraded. Happy Helming!
NAME: persistent-test
LAST DEPLOYED: Wed Apr 9 17:32:32 2025
NAMESPACE: testing
STATUS: deployed
REVISION: 48
TEST SUITE: None

Start with the workflow step invoking tailscale/github-action@v2 and the helm upgrade command shown in the report. Compare DNS and cluster reachability on the GitHub Actions runner with the local kubectl setup; done means the workflow can resolve the cluster endpoint and complete the Helm deployment reliably.