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Merge branch 'master' of ssh://gitea.zwackl.de:2222/dominik/k3s

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Dominik Chilla 2021-11-27 16:03:39 +01:00
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README.md
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@ -17,6 +17,7 @@
* [Installation](#install-nginx-ingress)
* [Cert-Manager (references ingress controller)](#cert-manager)
* [Installation](#cert-manager-install)
* [Cluster-internal CA issuer](#cert-manager-cluster-ca-issuer)
* [Let´s Encrypt issuer](#cert-manager-le-issuer)
* [Deploying a LE-certificate with ingress](#cert-manager-ingress)
* [Deploying a LE-certificate by CRD](#cert-manager-crd)
@ -39,6 +40,9 @@
* [Node maintenance](#node-maintenance)
* [What happens if a node goes down?](#what-happens-node-down)
* [Dealing with disruptions](#disruptions)
* [Troubleshooting](#troubleshooting)
* [Deleting a stuck namespace](#ts-delete-stuck-namespace)
* [Deleting stuck CRDs](#ts-delete-stuck-crd)
# kubectl - BASH autocompletion <a name="user-content-kubectl-bash-autocompletion"></a>
For current shell only:
@ -318,6 +322,9 @@ kubectl create namespace cert-manager
helm install cert-manager --namespace cert-manager --set 'extraArgs={--dns01-recursive-nameservers-only,--dns01-recursive-nameservers=8.8.8.8:53\,1.1.1.1:53}' jetstack/cert-manager
kubectl -n cert-manager get all
```
## Cluster-internal CA Issuer <a name="user-content-cert-manager-cluster-ca-issuer"></a>
Docs: https://cert-manager.io/docs/configuration/ca/
## Let´s Encrypt issuer <a name="user-content-cert-manager-le-issuer"></a>
Docs: https://cert-manager.io/docs/tutorials/acme/ingress/#step-6-configure-let-s-encrypt-issuer
```
@ -933,3 +940,13 @@ node/k3s-node2 uncordoned
* https://kubernetes.io/docs/concepts/workloads/pods/disruptions/
* https://kubernetes.io/docs/tasks/administer-cluster/safely-drain-node/
# Troubleshooting <a name="user-content-troubleshooting"></a>
## Deleting a stuck namespace <a name="user-content-ts-delete-stuck-namespace"></a>
```
kubectl get namespace "stucked-namespace" -o json \
| tr -d "\n" | sed "s/\"finalizers\": \[[^]]\+\]/\"finalizers\": []/" \
| kubectl replace --raw /api/v1/namespaces/stucked-namespace/finalize -f -
```
## Deleting stuck CRDs <a name="user-content-ts-delete-stuck-crd"></a>
https://github.com/kubernetes/kubernetes/issues/60538#issuecomment-369099998