Microk8s.ctr是用于microk8s下的容器管理（containerd，https://containerd.io）的命令，下面来探索一下其参数。
主要命令
ubuntu@ubuntu:/etc/systemd/system$ sudo microk8s.ctr
NAME:
ctr -
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containerd CLI
USAGE:
ctr [global options] command [command options] [arguments...]
VERSION:
v1.2.5
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 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
shim interact with a shim directly
cri interact with cri plugin
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")
--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") [$CONTAINERD_NAMESPACE]
--help, -h show help
--version, -v print the version查看容器镜像
ubuntu@ubuntu:/etc/systemd/system$ sudo microk8s.ctr images
NAME:
ctr images - manage images
USAGE:
ctr images command [command options] [arguments...]
COMMANDS:
check check that an image has all content available locally
export export an image
import import images
list, ls list images known to containerd
pull pull an image from a remote
push push an image to a remote
remove, rm remove one or more images by reference
label set and clear labels for an image
OPTIONS:
--help, -h show help
ubuntu@ubuntu:/etc/systemd/system$ sudo microk8s.ctr images ls
REF TYPE DIGEST SIZE PLATFORMS LABELS 查看容器实例
ubuntu@ubuntu:/etc/systemd/system$ sudo microk8s.ctr containers ls
CONTAINER IMAGE RUNTIME
ubuntu@ubuntu:/etc/systemd/system$ sudo microk8s.ctr containers
NAME:
ctr containers - manage containers
USAGE:
ctr containers command [command options] [arguments...]
COMMANDS:
create create container
delete, del, rm delete one or more existing containers
info get info about a container
list, ls list containers
label set and clear labels for a container
OPTIONS:
--help, -h show help更多参考
- ContainerD官网，https://containerd.io
- ContainerD快速入门，https://containerd.io/docs/getting-started/
- 高性能容器伺服器-containerd简介
- MicroK8s 快速入门
- MicroK8s-部署到Windows、macOS和Raspberry Pi
- k3s/k3OS-轻量级Kubernetes及操作系统
