ctr

containerd의 CLI

• ctr [global options]<color> <color #ff7f27>command [command options] [arguments]
• global options
  • –address, -a container sockert (default: /urn/containerd/containrd.sock)
  • –namespace namespace, -n namespace namespace(default: default)
  • –debug

k8s는 k8s.io네임스페이스, docker는 moby

• ctr namespace ls 네임스페이스 목록
• ctr namespace create name
• ctr namespace rm name

• ctr image pull image 이미지 pull
  • –platform</clolor> linux/amd64'' * ctr image ls 이미지 목록 * ctr image rm image 이미지 삭제 * ctr image tag src dst 태그 * ctr image export file.tar image 내보내기 * ctr image import file.tar 가져오기 * ctr image check 이미지 레이어 무결성 확인 * ctr image mount image mountpoint 이미지 마운트 * ctr image unmount mountpoint ==== container ==== <code shell> ctr container create \ –env KEY=VALUE \ –mount type=bind,src=/host,dst=/container,options=rbind:rw \ –net-host \ <image> <id> </code> * ctr container create image id 컨테이너 생성 * ctr container ls 목록 * ctr container info id 상세정보 JSON * ctr container rm id 삭제 ==== task ==== > 실제 프로세스 실행단위 * ctr task start id task 시작 * –detach, -d * ctr task ls 실행중인 task 목록 * ctr task exec eid id cmd 실행 tty |
    ctr task exec sh1 -t id sh tty attach * ctr task attach id stdout/stderr attach * ctr task pause id * ctr task resume id * ctr task kill id * –signal SIGKILL * ctr task rm id task 제거(stop) * ctr task ps id task 내 프로세스 목록 ==== run ==== <code shell> ctr run -d \ –env KEY=VAL \ –mount type=bind,src=/data,dst=/data,options=rbind:rw \ <image> <id> <cmd> </code> > create + start * ctr run image id forground * –detach, -d * –net-host * –rm 실행 후 작동 삭제 ==== snapshot ==== > 레이어 관리 * ctr snapshot ls forground * ctr snpashot info key forground * ctr snapshot rm key forground * ctr snapshot tree forground ==== content ==== > blob 관리 * ctr content ls forground * ctr content get digest * ctr content delete digest ==== lease === * ctr leases ls * ctr leases create –id id * ctr leases delete id ==== plugin ==== * ctr plugin ls 로드된 플러그인 목록 ==== HELP ==== ++ ctr --help

    NAME:
       ctr - 
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             containerd CLI
    
    
    USAGE:
       ctr [global options] command [command options]
    
    VERSION:
       2.2.0
    
    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
       sandboxes, sandbox, sb, s  Manage sandboxes
       info                       Print the server info
       deprecations               
       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 (default: false)
       --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 (default: false)
       --version, -v                Print the version (default: false)

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