c12s-kubespray/roles/kubernetes/control-plane/templates/k8s-certs-renew.sh.j2

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#!/bin/bash
echo "## Expiration before renewal ##"
{{ bin_dir }}/kubeadm {{ 'alpha ' if kube_version is version('v1.20.0', '<') }}certs check-expiration
echo "## Renewing certificates managed by kubeadm ##"
{{ bin_dir }}/kubeadm {{ 'alpha ' if kube_version is version('v1.20.0', '<') }}certs renew all
echo "## Restarting control plane pods managed by kubeadm ##"
{% if container_manager == "docker" %}
{{ docker_bin_dir }}/docker ps -af 'name=k8s_POD_(kube-apiserver|kube-controller-manager|kube-scheduler|etcd)-*' -q | /usr/bin/xargs {{ docker_bin_dir }}/docker rm -f"
{% else %}
{{ bin_dir }}/crictl pods --namespace kube-system --name 'kube-scheduler-*|kube-controller-manager-*|kube-apiserver-*|etcd-*' -q | /usr/bin/xargs {{ bin_dir }}/crictl rmp -f
{% endif %}
echo "## Updating /root/.kube/config ##"
/usr/bin/cp {{ kube_config_dir }}/admin.conf /root/.kube/config
echo "## Waiting for apiserver to be up again ##"
until printf "" 2>>/dev/null >>/dev/tcp/127.0.0.1/6443; do sleep 1; done
echo "## Expiration after renewal ##"
{{ bin_dir }}/kubeadm {{ 'alpha ' if kube_version is version('v1.20.0', '<') }}certs check-expiration