Kubernetes 领进门 | 使用 k3s 快速部署 kubernetes 集群

if [ -f /etc/update-extlinux.conf ]; then
  if ! grep -q cgroup /etc/update-extlinux.conf; then
      mods="cgroup_enable=cpuset cgroup_memory=1 cgroup_enable=memory"
      sed -i "s/rootfstype=ext4/rootfstype=ext4 $mods/" /etc/update-extlinux.conf
      update-extlinux
      reboot
  fi
fi

# k3s主服务器内网地址
export MY_SERVER_IP=172.21.0.11
# k3s认证令牌，任意字符串
export MY_TOKEN=943uoeitg4sh43589j38uj8irr439943oit
# 内部网卡设备号，`ifconfig` 查看
export MY_ETH_DEV=eth0
# 自动获取本机IP，若无法获取请手动指定
export MY_NODE_IP=`ip -o -4 addr list | grep $MY_ETH_DEV | awk '{print $4}' | cut -d/ -f1`

wget -qO- https://get.k3s.io | sh -s - server 
    --cluster-init 
    --token $MY_TOKEN 
    --node-ip $MY_NODE_IP 
    --advertise-address $MY_NODE_IP 
    --flannel-iface $MY_ETH_DEV 
    --disable-cloud-controller

wget -qO- https://get.k3s.io | sh -s - server 
    --server https://$MY_SERVER_IP:6443 
    --token $MY_TOKEN 
    --node-ip $MY_NODE_IP 
    --advertise-address $MY_NODE_IP 
    --flannel-iface $MY_ETH_DEV 
    --disable-cloud-controller

wget -qO- https://get.k3s.io | sh -s - agent 
    --server https://$MY_SERVER_IP:6443 
    --token $MY_TOKEN 
    --node-ip $MY_NODE_IP 
    --flannel-iface $MY_ETH_DEV

# 查看所有节点
kubectl get node
# 查看所有应用
kubectl get pod -A -o wide
# 查看所有服务
kubectl get service -A
kubectl get ingress -A
# 查看节点运行的容器
crictl ps

# 卸载服务器
if type k3s-uninstall.sh >/dev/null; then
    k3s-uninstall.sh
fi
# 卸载边缘节点
if type k3s-agent-uninstall.sh >/dev/null; then
    k3s-agent-uninstall.sh
fi
# 重启后清理
rm -rf ~/.kube
rm -rf /etc/rancher
rm -rf /var/lib/cni
rm -rf /var/lib/rancher
rm -rf /var/lib/kubelet
rm -rf /var/log/containers
rm -rf /var/log/k3s*
rm -rf /var/log/pods