配置国内镜像源 vi /etc/containerd/config.toml

https://------.mirror.aliyuncs.com 私有镜像仓库位址请自行阿里云获取

[plugins."io.containerd.grpc.v1.cri".registry]
  [plugins."io.containerd.grpc.v1.cri".registry.mirrors]
    [plugins."io.containerd.grpc.v1.cri".registry.mirrors."docker.io"]
      endpoint = ["https://------.mirror.aliyuncs.com", "https://registry-1.docker.io"]

使用私有镜像仓库

[plugins."io.containerd.grpc.v1.cri".registry]
   [plugins."io.containerd.grpc.v1.cri".registry.mirrors]
       [plugins."io.containerd.grpc.v1.cri".registry.mirrors."docker.io"]
                endpoint = ["https://registry-1.docker.io"] //到此为配置文件默认生成，之后为需要添加的内容
       [plugins."io.containerd.grpc.v1.cri".registry.mirrors."192.168.66.4"]
                endpoint = ["https://192.168.66.4:443"]
   [plugins."io.containerd.grpc.v1.cri".registry.configs]
         [plugins."io.containerd.grpc.v1.cri".registry.configs."192.168.66.4".tls]
                insecure_skip_verify = true
         [plugins."io.containerd.grpc.v1.cri".registry.configs."192.168.66.4".auth]
                username = "admin"
                password = "Harbor12345"

配置完成后需要重启服务

systemctl daemon-reload
systemctl restart containerd
systemctl status containerd