Kubernetes Pugin cloud's default agent broken with failing to save jgit config file

Using Jenkins
3

I’ve solved the jgit problem; the issue is the security context fsgroup, runasgroup, and runasuser. Jnlp uses uid 1000, so changing it to 1000 works.

For error Caused by: java.net.ProtocolException: Expected HTTP 101 response but was '403 Forbidden was solved with adding rbac rules to the role:

apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
  namespace: jenkins
  name: jenkins-agent
rules:
- apiGroups: [""]
  resources: ["pods"]
  verbs: ["create","delete","get","list","patch","update","watch"]
- apiGroups: [""]
  resources: ["pods/exec"]
  verbs: ["create","delete","get","list","patch","update","watch"]
- apiGroups: [""]
  resources: ["pods/log"]
  verbs: ["get","list","watch"]
- apiGroups: [""]
  resources: ["secrets"]
  verbs: ["get"]
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