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Merge pull request #1191 from rancher/leader-election-lease

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Update trobleshooting tips regarding leader election
This commit is contained in:
Sunil Singh
2024-03-28 12:50:11 -07:00
committed by GitHub
parent 29c8fe37f9 680e7d4d20
commit cd940d28c5
2 changed files with 16 additions and 6 deletions
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versioned_docs/version-2.8/troubleshooting/other-troubleshooting-tips/rancher-ha.md
+8 -3
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@@ -74,10 +74,15 @@ kubectl -n ingress-nginx logs -l app=ingress-nginx
### Leader election
The leader is determined by a leader election process. After the leader has been determined, the leader (`holderIdentity`) is saved in the `cattle-controllers` ConfigMap (in this example, `rancher-7dbd7875f7-qbj5k`).
The leader is determined by a leader election process. After the leader has been determined, the leader (`holderIdentity`) is saved in the `cattle-controllers` Lease in the `kube-system` namespace (in this example, `rancher-dbc7ff869-gvg6k`).
```
kubectl -n kube-system get configmap cattle-controllers -o jsonpath='{.metadata.annotations.control-plane\.alpha\.kubernetes\.io/leader}'
{"holderIdentity":"rancher-7dbd7875f7-qbj5k","leaseDurationSeconds":45,"acquireTime":"2019-04-04T11:53:12Z","renewTime":"2019-04-04T12:24:08Z","leaderTransitions":0}
kubectl -n kube-system get lease cattle-controllers
```
Example output:
```
NAME HOLDER AGE
cattle-controllers rancher-dbc7ff869-gvg6k 6h10m
```