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Kubernetes Documentation

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Kubernetes Documentation

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  1. Kubernetes Documentation Before you begin You must have Associate in Nursing existing cluster, this text is concerning upgrading from Kubernetes 1.22 to Kubernetes 1.23. If your cluster isn't presently running Kubernetes 1.22 then please check the documentation for the version of Kubernetes that you simply arrange to upgrade to. Upgrade approaches kubeadm If your cluster was deployed using the kubeadm tool, refer to Upgrading kubeadm clusters for detailed information on how to upgrade the cluster. Once you have upgraded the cluster, remember to install the latest version of kubectl. Manual deployments Caution: These steps do not account for third-party extensions such as network and storage plug-ins. You should manually update the control plane following this sequence: etcd (all instances) kube-apiserver (all control plane hosts) kube-controller-manager kube-scheduler cloud controller manager, if you use one At this point you should install the latest version of kubectl. For each node in your cluster, drain that node and then either replace it with a new node that uses the 1.23 kubelet, or upgrade the kubelet on that node and bring the node back into service. Other deployments

  2. Refer to the documentation for your cluster deployment tool to learn the recommended set up steps for maintenance. Post-upgrade tasks Switch your cluster's storage API version The objects that are serialized into etcd for a cluster's internal representation of the Kubernetes resources active in the cluster are written using a particular version of the API. When the supported API changes, these objects may need to be rewritten in the newer API. Failure to do this will eventually result in resources that are no longer decodable or usable by the Kubernetes API server. For each affected object, fetch it using the latest supported API and then write it back also using the latest supported API. Update manifests Upgrading to a new Kubernetes version can provide new APIs. You can use kubectl convert command to convert manifests between different API versions. For example: kubectl convert -f pod.yaml --output-version v1 The kubectl tool replaces the contents of pod.yaml with a manifest that sets kind to Pod (unchanged), but with a revised apiVersion. For More Details Click here Contact Num : +91- 9989971070

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