一、下载containerd安装包
wget https://github.com/containerd/containerd/releases/download/v1.4.3/cri-containerd-cni-1.4.3-linux-amd64.tar.gz
二、解压安装包
tar -zxvf cri-containerd-cni-1.4.3-linux-amd64.tar.gz
三、移除不需要的文件（以下都在解压包下操作）
rm -rf etc/cni/
rm -rf opt/
#启动
systemctl status containerd
systemctl enable containerd
systemctl restart containerd
四、生成默认的配置文件
containerd config default > /etc/containerd/config.toml
修改配置文件：oom_score = -999
五、基本用法
NAME:
ctr -
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containerd CLI
USAGE:
ctr [global options] command [command options] [arguments...]
VERSION:
v1.4.3
DESCRIPTION:
ctr is an unsupported debug and administrative client for interacting
with the containerd daemon. Because it is unsupported, the commands,
options, and operations are not guaranteed to be backward compatible or
stable from release to release of the containerd project.
COMMANDS:
plugins, plugin provides information about containerd plugins
version print the client and server versions
containers, c, container manage containers
content manage content
events, event display containerd events
images, image, i manage images
leases manage leases
namespaces, namespace, ns manage namespaces
pprof provide golang pprof outputs for containerd
run run a container
snapshots, snapshot manage snapshots
tasks, t, task manage tasks
install install a new package
oci OCI tools
shim interact with a shim directly
help, h Shows a list of commands or help for one command
GLOBAL OPTIONS:
--debug enable debug output in logs
--address value, -a value address for containerd's GRPC server (default: "/run/containerd/containerd.sock") [$CONTAINERD_ADDRESS]
--timeout value total timeout for ctr commands (default: 0s)
--connect-timeout value timeout for connecting to containerd (default: 0s)
--namespace value, -n value namespace to use with commands (default: "default") [$CONTAINERD_NAMESPACE]
--help, -h show help
--version, -v print the version