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CASMPET-7224: remove unnecessary checking of some kubelet certs #5370

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Sep 13, 2024
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CASMPET-7224: remove unnecessary checking of some kubelet certs #5370

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11 changes: 4 additions & 7 deletions operations/kubernetes/Cert_Renewal_for_Kubernetes_and_Bare_Metal_EtcD.md
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Original file line number Diff line number Diff line change
Expand Up @@ -53,7 +53,7 @@ Services (master nodes):
Client (master and worker nodes):

```text
/var/lib/kubelet/pki/kubelet-client-2021-09-07-17-06-36.pem
/var/lib/kubelet/pki/kubelet-client-<date-time>.pem
/var/lib/kubelet/pki/kubelet-client-current.pem
/var/lib/kubelet/pki/kubelet.crt
/var/lib/kubelet/pki/kubelet.key
Expand Down Expand Up @@ -250,7 +250,7 @@ Run the following steps on each master node.
***This task is for each master node and below example checks each certificate in [File Locations](#file-locations).***

```bash
for i in $(ls /etc/kubernetes/pki/*.crt;ls /etc/kubernetes/pki/etcd/*.crt;ls /var/lib/kubelet/pki/*.crt;ls /var/lib/kubelet/pki/*.pem);do echo ${i}; openssl x509 -enddate -noout -in ${i};done
for i in $(ls /etc/kubernetes/pki/*.crt;ls /etc/kubernetes/pki/etcd/*.crt;ls /var/lib/kubelet/pki/kubelet-client-current.pem);do echo ${i}; openssl x509 -enddate -noout -in ${i};done
```

Example output:
Expand All @@ -276,10 +276,6 @@ Run the following steps on each master node.
notAfter=Sep 22 17:13:29 2022 GMT
/etc/kubernetes/pki/etcd/server.crt
notAfter=Sep 22 17:13:29 2022 GMT
/var/lib/kubelet/pki/kubelet.crt
notAfter=Sep 21 19:50:16 2022 GMT
/var/lib/kubelet/pki/kubelet-client-2021-09-07-17-06-36.pem
notAfter=Sep 4 17:01:38 2022 GMT
/var/lib/kubelet/pki/kubelet-client-current.pem
notAfter=Sep 4 17:01:38 2022 GMT
```
Expand Down Expand Up @@ -428,9 +424,10 @@ Repeat the above step on every master node.
kubeadm init phase kubelet-finalize all --cert-dir /var/lib/kubelet/pki/ && echo OK
```

5. Check the expiration of the `kubectl` certificate files. See [File Locations](#file-locations) for the list of files.
5. Check the expiration of the `kubelet` certificate files. See [File Locations](#file-locations) for the list of files.

**This task is for each master and worker node. The example checks each `kubelet` certificate in [File Locations](#file-locations).**
**`NOTE`** As long as the `kubelet-client-current.pem` certificate is current, expiration dates for other `kubelet` certificates can be ignored.

```bash
for i in $(ls /var/lib/kubelet/pki/*.crt;ls /var/lib/kubelet/pki/*.pem);do echo ${i}; openssl x509 -enddate -noout -in ${i};done
Expand Down