Web-based terminal を有効化

cf. https://argo-cd.readthedocs.io/en/stable/operator-manual/web_based_terminal/

手順

• ConfigMap: argocd-cm に下記設定を追記します:

data:
  exec.enabled: "true"

• ClusterRole: argocd-server に下記設定を追記します（namespaced mode の場合は同名の Role に追記）:

- apiGroups:
    - ""
  resources:
    - pods/exec
  verbs:
    - create