# K8s Master Node 1 year cert expire problem

**URL:** <https://discuss.kubernetes.io/t/k8s-master-node-1-year-cert-expire-problem/14821>\
**Category:** General Discussions\
**Created:** [February 13, 2021, 6:17pm UTC](https://discuss.kubernetes.io/t/k8s-master-node-1-year-cert-expire-problem/14821 "2021-02-13T18:17:24Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![murat](https://sea2.discourse-cdn.com/flex016/user_avatar/discuss.kubernetes.io/murat/32/6962_2.png) [@murat](https://discuss.kubernetes.io/u/murat)\
**Post date:** [February 13, 2021, 6:17pm UTC](https://discuss.kubernetes.io/t/k8s-master-node-1-year-cert-expire-problem/14821/1 "2021-02-13T18:17:24Z")

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Asking for help? Comment out what you need so we can get more information to help you!

### Cluster information:

Kubernetes version: 1.17  
Cloud being used: (put bare-metal if not on a public cloud)  
Installation method: On-Prem VM in ESX Server  
Host OS: CentOS 7.x  
CNI and version:calico/node:v3.15.0  
CRI and version:

Has the 1 year valid certificate problem of K8s been resolved in the next versions? Could you please share this information?

Respects

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**Author:** ![mrbobbytables](https://sea2.discourse-cdn.com/flex016/user_avatar/discuss.kubernetes.io/mrbobbytables/32/7_2.png) [@mrbobbytables](https://discuss.kubernetes.io/u/mrbobbytables)\
**Post date:** [February 14, 2021, 8:33pm UTC](https://discuss.kubernetes.io/t/k8s-master-node-1-year-cert-expire-problem/14821/2 "2021-02-14T20:33:38Z")

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Was this done with kubeadm?

If yes, the certs will renew each time you update the cluster. Their default duration is for 1 year.  
To manually renew - check out these steps: [Certificate Management with kubeadm | Kubernetes](https://kubernetes.io/docs/tasks/administer-cluster/kubeadm/kubeadm-certs/#manual-certificate-renewal)