구차니의 잡동사니 모음

윽... 뱀은 있어도 c계열은 unofficial이네..

걍 소켓으로 HTTP로 주고 받는게 편하려나...

[링크 : https://docs.docker.com/develop/sdk/]

ubuntu 18.04에서 docker-ce로 깐건데.. 이상하네

요거야 원래 옵션이고 도는 놈들만(run) 보여주는거니 문제 안되는데

읭.. -a과 --all이 같은거였나. -all이 아니었냐.. 아무튼 얘는 죽은것도 보여줌

얘는 일단 잘못된 옵션인데.. -a랑도 다르게 나오고 머지?

여러개는 힘들거 같고, 하나의 컨테이너만 살린다면

그걸 상속받아 만든 녀석에 대해서는 검색이 가능할 듯

[링크 : https://stackoverflow.com/questions/32073971/stopping-docker-containers-by-image-name-ubuntu]

아무생각이 없으니 이렇게 했겠지만..

docker create를 통해서 다운로드 받은 이미지를

컨테이너로 생성하는데 아무생각 없이 계속 create를 하니 계속 생겨날줄 알았는데 하나만 생겨난다.

그래서 테스트 하고 나서 삭제하려는데 어라?

지워도 지워도 계속 생겨난다 -ㅁ-?

의도된 작동인지 버그인지 내가 착각하는건지 모르겠네 -ㅁ-?

요약)

1. create로 container 생성시 계속 생겨나지만 가장 최신 녀석만 목록에 나옴

2. rm으로 container 삭제시에도 fifo 처럼 마지막에 생성된 녀석들의 이름만 나옴

디스크 용량 제한하기(늘리기)

[링크 : https://www.projectatomic.io/blog/2016/03/daemon_option_basedevicesize/]

cpu와 ram에 대한건 보이는데 디스크에 대한건 안보이네?

[링크 : https://docs.docker.com/config/containers/resource_constraints/]

docker system df

[링크 : https://docs.docker.com/engine/reference/commandline/system_df/]

[링크 : https://docs.docker.com/engine/reference/commandline/run/#set-storage-driver-options-per-container]

  [링크 : https://forums.docker.com/t/limit-disk-space-in-a-docker-container/61068/3]

docker는 vm이 아니다.

어쩌면 이게 정말 핵심인데

docker내부에서 어떠한 서비스가 실행되는게 아니라면

이미지로 부터 생성되는 컨테이너는 바로 exit 상태로 전환된다.

docker pull 을 통해서 image를 docker hub 로 부터 받고

docker create로 image에서 container로 만들고 

docker start로 container의 설정파일대로 실행하게 된다.

docker attach로 tty를 해당 도커의 stdin/stdout에 붙여준다.

docker run은 pull + create + start를 하나로 합친 명령어이다.

그런 관계로 docker 내부의 서비스가 죽어서 exited가 되면

docker start [containerid]로 구동을 시키면 되겠지만..

어떤 원인이 있어서 죽은 거테니.. 다음번에 다시 시도해봐야겠네?

[링크 : https://www.linuxnix.com/docker-start-exited-container/]

[링크 : https://stackoverflow.com/questions/21928691/how-to-continue-a-docker-container-which-has-exited]

[링크 : https://bestna.wordpress.com/2014/11/10/docker-container-run-이야기/]

[링크 : https://github.com/odota/core/issues/1121]

[링크 : https://stackoverflow.com/questions/21928691/how-to-continue-a-docker-container-which-has-exited]

+

docker commit 은 수정된 컨테이너를 이미지로 만들어 주는 명령어

어떠한 수정을 유지하는게 아니라 수정된 컨테이너를 이미지로 환원(?) 시키는 명령어

docker create [이미지 이름]

docker run [컨테이너UUID] -a

docker run [이미지 이름]

[링크 : https://stackoverflow.com/questions/21928691/how-to-continue-a-docker-container-which-has-exited]

$ docker exec --help

Usage: docker exec [OPTIONS] CONTAINER COMMAND [ARG...]

Run a command in a running container

Options:
  -d, --detach               Detached mode: run command in the background
      --detach-keys string   Override the key sequence for detaching a container
  -e, --env list             Set environment variables
  -i, --interactive          Keep STDIN open even if not attached
      --privileged           Give extended privileges to the command
  -t, --tty                  Allocate a pseudo-TTY
  -u, --user string          Username or UID (format: <name|uid>[:<group|gid>])
  -w, --workdir string       Working directory inside the container

$ docker run --help

Usage: docker run [OPTIONS] IMAGE [COMMAND] [ARG...]

Run a command in a new container

Options:
      --add-host list                  Add a custom host-to-IP mapping (host:ip)
  -a, --attach list                    Attach to STDIN, STDOUT or STDERR
      --blkio-weight uint16            Block IO (relative weight), between 10 and 1000, or 0 to disable (default 0)
      --blkio-weight-device list       Block IO weight (relative device weight) (default [])
      --cap-add list                   Add Linux capabilities
      --cap-drop list                  Drop Linux capabilities
      --cgroup-parent string           Optional parent cgroup for the container
      --cidfile string                 Write the container ID to the file
      --cpu-count int                  CPU count (Windows only)
      --cpu-percent int                CPU percent (Windows only)
      --cpu-period int                 Limit CPU CFS (Completely Fair Scheduler) period
      --cpu-quota int                  Limit CPU CFS (Completely Fair Scheduler) quota
      --cpu-rt-period int              Limit CPU real-time period in microseconds
      --cpu-rt-runtime int             Limit CPU real-time runtime in microseconds
  -c, --cpu-shares int                 CPU shares (relative weight)
      --cpus decimal                   Number of CPUs
      --cpuset-cpus string             CPUs in which to allow execution (0-3, 0,1)
      --cpuset-mems string             MEMs in which to allow execution (0-3, 0,1)
  -d, --detach                         Run container in background and print container ID
      --detach-keys string             Override the key sequence for detaching a container
      --device list                    Add a host device to the container
      --device-cgroup-rule list        Add a rule to the cgroup allowed devices list
      --device-read-bps list           Limit read rate (bytes per second) from a device (default [])
      --device-read-iops list          Limit read rate (IO per second) from a device (default [])
      --device-write-bps list          Limit write rate (bytes per second) to a device (default [])
      --device-write-iops list         Limit write rate (IO per second) to a device (default [])
      --disable-content-trust          Skip image verification (default true)
      --dns list                       Set custom DNS servers
      --dns-option list                Set DNS options
      --dns-search list                Set custom DNS search domains
      --entrypoint string              Overwrite the default ENTRYPOINT of the image
  -e, --env list                       Set environment variables
      --env-file list                  Read in a file of environment variables
      --expose list                    Expose a port or a range of ports
      --group-add list                 Add additional groups to join
      --health-cmd string              Command to run to check health
      --health-interval duration       Time between running the check (ms|s|m|h) (default 0s)
      --health-retries int             Consecutive failures needed to report unhealthy
      --health-start-period duration   Start period for the container to initialize before starting health-retries countdown
                                       (ms|s|m|h) (default 0s)
      --health-timeout duration        Maximum time to allow one check to run (ms|s|m|h) (default 0s)
      --help                           Print usage
  -h, --hostname string                Container host name
      --init                           Run an init inside the container that forwards signals and reaps processes
  -i, --interactive                    Keep STDIN open even if not attached
      --io-maxbandwidth bytes          Maximum IO bandwidth limit for the system drive (Windows only)
      --io-maxiops uint                Maximum IOps limit for the system drive (Windows only)
      --ip string                      IPv4 address (e.g., 172.30.100.104)
      --ip6 string                     IPv6 address (e.g., 2001:db8::33)
      --ipc string                     IPC mode to use
      --isolation string               Container isolation technology
      --kernel-memory bytes            Kernel memory limit
  -l, --label list                     Set meta data on a container
      --label-file list                Read in a line delimited file of labels
      --link list                      Add link to another container
      --link-local-ip list             Container IPv4/IPv6 link-local addresses
      --log-driver string              Logging driver for the container
      --log-opt list                   Log driver options
      --mac-address string             Container MAC address (e.g., 92:d0:c6:0a:29:33)
  -m, --memory bytes                   Memory limit
      --memory-reservation bytes       Memory soft limit
      --memory-swap bytes              Swap limit equal to memory plus swap: '-1' to enable unlimited swap
      --memory-swappiness int          Tune container memory swappiness (0 to 100) (default -1)
      --mount mount                    Attach a filesystem mount to the container
      --name string                    Assign a name to the container
      --network string                 Connect a container to a network (default "default")
      --network-alias list             Add network-scoped alias for the container
      --no-healthcheck                 Disable any container-specified HEALTHCHECK
      --oom-kill-disable               Disable OOM Killer
      --oom-score-adj int              Tune host's OOM preferences (-1000 to 1000)
      --pid string                     PID namespace to use
      --pids-limit int                 Tune container pids limit (set -1 for unlimited)
      --platform string                Set platform if server is multi-platform capable
      --privileged                     Give extended privileges to this container
  -p, --publish list                   Publish a container's port(s) to the host
  -P, --publish-all                    Publish all exposed ports to random ports
      --read-only                      Mount the container's root filesystem as read only
      --restart string                 Restart policy to apply when a container exits (default "no")
      --rm                             Automatically remove the container when it exits
      --runtime string                 Runtime to use for this container
      --security-opt list              Security Options
      --shm-size bytes                 Size of /dev/shm
      --sig-proxy                      Proxy received signals to the process (default true)
      --stop-signal string             Signal to stop a container (default "SIGTERM")
      --stop-timeout int               Timeout (in seconds) to stop a container
      --storage-opt list               Storage driver options for the container
      --sysctl map                     Sysctl options (default map[])
      --tmpfs list                     Mount a tmpfs directory
  -t, --tty                            Allocate a pseudo-TTY
      --ulimit ulimit                  Ulimit options (default [])
  -u, --user string                    Username or UID (format: <name|uid>[:<group|gid>])
      --userns string                  User namespace to use
      --uts string                     UTS namespace to use
  -v, --volume list                    Bind mount a volume
      --volume-driver string           Optional volume driver for the container
      --volumes-from list              Mount volumes from the specified container(s)
  -w, --workdir string                 Working directory inside the container

+

2019.06.12

-dit

[링크 : https://stackoverflow.com/.../practically-what-is-the-difference-between-docker-run-dit-itd-vs-docker-run]

$ file *
cdccdf50922d90e847e097347de49119be0f17c18b4a2d98da9919fa5884479d:      directory
fce289e99eb9bca977dae136fbe2a82b6b7d4c372474c9235adc1741675f587e.json: ASCII text, with very long lines, with no line terminators

manifest.json:                                                         ASCII text
repositories:                                                          ASCII text

$ file *
VERSION:   ASCII text, with no line terminators
hello:     ELF 64-bit LSB executable, x86-64, version 1 (SYSV), statically linked, BuildID[sha1]=1db23291fc8346e8622488be91d4c5438b760315, strippedjson:      ASCII text, with very long lines, with no line terminators
layer.tar: POSIX tar archive

$ cat fce289e99eb9bca977dae136fbe2a82b6b7d4c372474c9235adc1741675f587e.json 
{"architecture":"amd64","config":{"Hostname":"","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":["PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"],"Cmd":["/hello"],"ArgsEscaped":true,"Image":"sha256:a6d1aaad8ca65655449a26146699fe9d61240071f6992975be7e720f1cd42440","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels":null},"container":"8e2caa5a514bb6d8b4f2a2553e9067498d261a0fd83a96aeaaf303943dff6ff9","container_config":{"Hostname":"8e2caa5a514b","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":["PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"],"Cmd":["/bin/sh","-c","#(nop) ","CMD [\"/hello\"]"],"ArgsEscaped":true,"Image":"sha256:a6d1aaad8ca65655449a26146699fe9d61240071f6992975be7e720f1cd42440","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels":{}},"created":"2019-01-01T01:29:27.650294696Z","docker_version":"18.06.1-ce","history":[{"created":"2019-01-01T01:29:27.416803627Z","created_by":"/bin/sh -c #(nop) COPY file:f77490f70ce51da25bd21bfc30cb5e1a24b2b65eb37d4af0c327ddc24f0986a6 in / "},{"created":"2019-01-01T01:29:27.650294696Z","created_by":"/bin/sh -c #(nop)  CMD [\"/hello\"]","empty_layer":true}],"os":"linux","rootfs":{"type":"layers","diff_ids":["sha256:af0b15c8625bb1938f1d7b17081031f649fd14e6b233688eea3c5483994a66a3"]}}

$ cat manifest.json 
[{"Config":"fce289e99eb9bca977dae136fbe2a82b6b7d4c372474c9235adc1741675f587e.json","RepoTags":["hello-world:latest"],"Layers":["cdccdf50922d90e847e097347de49119be0f17c18b4a2d98da9919fa5884479d/layer.tar"]}]

$ cat repositories 
{"hello-world":{"latest":"cdccdf50922d90e847e097347de49119be0f17c18b4a2d98da9919fa5884479d"}}

$ cat VERSION 
1.0

$ cat json 
{"id":"cdccdf50922d90e847e097347de49119be0f17c18b4a2d98da9919fa5884479d","created":"2019-01-01T01:29:27.650294696Z","container":"8e2caa5a514bb6d8b4f2a2553e9067498d261a0fd83a96aeaaf303943dff6ff9","container_config":{"Hostname":"8e2caa5a514b","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":["PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"],"Cmd":["/bin/sh","-c","#(nop) ","CMD [\"/hello\"]"],"ArgsEscaped":true,"Image":"sha256:a6d1aaad8ca65655449a26146699fe9d61240071f6992975be7e720f1cd42440","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels":{}},"docker_version":"18.06.1-ce","config":{"Hostname":"","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":["PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"],"Cmd":["/hello"],"ArgsEscaped":true,"Image":"sha256:a6d1aaad8ca65655449a26146699fe9d61240071f6992975be7e720f1cd42440","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels":null},"architecture":"amd64","os":"linux"}

[링크 : https://serverfault.com/questions/701248/downloading-docker-image-for-transfer-to-non-internet-connected-machine]

[링크 : https://code-maze.com/docker-hub-vs-creating-docker-registry/]

$ sudo docker pull hello-world

$ sudo docker save -o hello-world  hello-world

-rw-------  1 root     root      13K  5월 16 19:04 hello-world

$ sudo file hello-world 
hello-world: POSIX tar archive

[링크 : https://serverfault.com/.../downloading-docker-image-for-transfer-to-non-internet-connected-machine]