Documentation
Rate This Document
Findability
Accuracy
Completeness
Readability
SubmitClose

Common Operations on All Nodes

  1. Change the host names to ensure that the host name of each server is unique.

    For example:

    • On the master node, change the host name to k8s-master.
      hostnamectl set-hostname k8s-master
bash
    • On the worker node, change the host name to k8s-slave1.
      hostnamectl set-hostname k8s-slave1
bash
  2. Change the passwords of all servers to the same.
  3. Disable the firewall.
    systemctl stop firewalld
systemctl disable firewalld
  4. Disable SWAP partitions.
    • Run the following command. The setting becomes invalid after the server restarts.
      swapoff -a
    • Comment out the code for automatic mounting of SWAP partitions in the fstab file. The setting is still valid after the server restarts.
      1. Open the fstab file.
        vi /etc/fstab
      2. Press i to enter the insert mode and comment out the line where /dev/mapper/openeuler-swap is located.
      3. Press Esc, type :wq, and press Enter to save the file and exit.
  5. Disable SELinux.

    1. Open the /etc/selinux/config file. If the file does not exist, create one and open it.

      vi /etc/selinux/config
    2. Press i to enter the insert mode and change the value of SELINUX to disabled.
      1
      SELINUX=disabled
    3. Press Esc, type :wq!, and press Enter to save the file and exit.
  6. Configure the source required for installing Kubernetes cluster software.
    1. Go to the /etc/yum.repos.d/ directory.
      cd /etc/yum.repos.d/
    2. Open the kubernetes.repo file.
      vi kubernetes.repo
    3. Press i to enter the insert mode and add the following content:
      [kubernetes]
name=Kubernetes
baseurl=https://pkgs.k8s.io/core:/stable:/v1.28/rpm/
enabled=1
gpgcheck=1
gpgkey=https://pkgs.k8s.io/core:/stable:/v1.28/rpm/repodata/repomd.xml.key
exclude=kubelet kubeadm kubectl cri-tools kubernetes-cni
    4. Press Esc, type :wq!, and press Enter to save the file and exit.
  7. Install Kubernetes cluster software.
    yum install -y kubelet kubeadm kubectl kubernetes-cni --disableexcludes=kubernetes
systemctl enable --now kubelet
  8. Install containerd and runC based on 1 to 3 in (Optional) Deploying the Containerd Environment. After the installation is successful, restart the Docker service based on 6 on the worker node.
  9. Modify the containerd configuration file.
    mkdir -p /etc/containerd/
cd /etc/containerd/
containerd config default > /etc/containerd/config.toml
    1. Open the /etc/containerd/config.toml file.
      vi /etc/containerd/config.toml
    2. Press i to enter the insert mode and change the value of SystemdCgroup to true.
      SystemdCgroup = true
    3. Press Esc, type :wq!, and press Enter to save the file and exit.
  10. Configure crictl.
    1. Open the crictl.yaml file.
      vi /etc/crictl.yaml
    2. Press i to enter the insert mode and add the following content:
      runtime-endpoint: unix:///run/containerd/containerd.sock
image-endpoint: unix:///run/containerd/containerd.sock
timeout: 10
    3. Press Esc, type :wq!, and press Enter to save the file and exit.
    4. Restart containerd.
      systemctl daemon-reload
systemctl restart containerd
  11. Configure network forwarding. Perform this step again after the server is restarted.
    modprobe overlay
modprobe br_netfilter
    1. Open the k8s.conf file.
      vi /etc/sysctl.d/k8s.conf
    2. Press i to enter the insert mode and add the following content:
      net.bridge.bridge-nf-call-ip6tables=1
net.bridge.bridge-nf-call-iptables=1
net.ipv4.ip_forward=1
    3. Press Esc, type :wq!, and press Enter to save the file and exit.
    4. Make the configuration take effect.
      sysctl -p /etc/sysctl.d/k8s.conf