Installing Kubernetes

Procedure

1. Configure the Kubernetes software source.
   

   SSL verification is performed during software installation by default. Therefore, you need to disable SSL verification first. Add sslverify=false to the /etc/yum.conf file.

   cat > /etc/yum.repos.d/kubernetes.repo <<EOF
   [kubernetes]
   name=Kubernetes
   baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-aarch64/ 
   enabled=1
   gpgcheck=1
   repo_gpgcheck=1
   gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
   EOF

2. Install the kubelet, Kubeadm, and kubectl components.

   yum install -y kubelet-1.20.6 kubeadm-1.20.6 kubectl-1.20.6 cri-tools-1.24.0-0 kubernetes-cni-0.8.7-0

   

3. Configure kubelet. In this example, configure kubelet to use containerd as the container runtime and set the cgroup driver to systemd.

   cat > /etc/sysconfig/kubelet <<EOF
   KUBELET_EXTRA_ARGS=--cgroup-driver=systemd
   EOF

4. Configure kubelet to automatically start upon system startup.

   systemctl enable --now kubelet && systemctl restart kubelet

5. Configure the CRL client tool crictl. In this example, configure crictl to use containerd as the container runtime.

   cat > /etc/crictl.yaml <<EOF
   runtime-endpoint: unix:///run/containerd/containerd.sock
   image-endpoint: unix:///run/containerd/containerd.sock
   timeout: 10
   debug: false
   EOF