Getting Started with Docker

아~ 대충 이런거구나!!

Goal...

내 PC에 리눅스를 돌려보자!

 Mission...

질문은 안받습니다!

그냥 따라하세요 ㅋㅋ

Rules...

Installing Docker

Step 1

  • On Ubuntu

     
  • On Red Hat and family

     
  • On OS X
    install Boot2Docker
     
  • On Microsoft Windows
    install Boot2Docker 
$ sudo apt-get install lxc-docker

$ sudo yum -y install lxc-docker

Installing Boot2Docker

  • http://boot2docker.io 에서
    pkg, exe 파일 다운로드 받은 후 설치
     
  • installation documentaion 따라하기 
    • $ boot2docker init
    • $ boot2docker start
    • $ $(boot2docker shellinit)

Testing Boot2Docker

  • $ docker info
  • $ docker version
  • $ boot2docker
  • $ boot2docker ip
$ docker info
Containers: 0
Images: 0
Storage Driver: aufs
 Root Dir: /mnt/sda1/var/lib/docker/aufs
 Dirs: 0
Execution Driver: native-0.2
Kernel Version: 3.16.4-tinycore64
Operating System: Boot2Docker 1.3.0 (TCL 5.4); master : a083df4 - Thu Oct 16 17:05:03 UTC 2014
Debug mode (server): true
Debug mode (client): false
Fds: 10
Goroutines: 11
EventsListeners: 0
Init Path: /usr/local/bin/docker

$ docker version
Client version: 1.3.0
Client API version: 1.15
Go version (client): go1.3.3
Git commit (client): c78088f
OS/Arch (client): darwin/amd64
Server version: 1.3.0
Server API version: 1.15
Go version (server): go1.3.3
Git commit (server): c78088f

$ boot2docker
Usage: boot2docker [<options>] {help|init|up|ssh|save|down|poweroff|reset|restart|config|status|info|ip|socket|shellinit|delete|download|upgrade|version} [<args>]

$ boot2docker ip

The VM's Host only interface IP address is: 192.168.59.103

Build our first container

Step 2

$ docker run -i -t ubuntu /bin/bash

$ docker run -i -t ubuntu /bin/bash
Unable to find image 'ubuntu' locally
ubuntu:latest: The image you are pulling has been verified
511136ea3c5a: Pull complete
d497ad3926c8: Downloading [==========================>   d497ad3926c8: Pull complete
ccb62158e970: Pull complete
e791be0477f2: Pull complete
3680052c0f5c: Pull complete
22093c35d77b: Pull complete
5506de2b643b: Pull complete
Status: Downloaded newer image for ubuntu:latest
root@2e0f473304c5:/#

Working with

our first container

Step 3

  • hostname 확인

    root@2e0f473304c5:/# hostname 
     

  • /etc/hosts 파일 확인

    root@2e0f473304c5:/# cat /etc/hosts
     

  • 네트워크 설정 확인

    root@2e0f473304c5:/# ip a
     

  • 실행중인 프로세스 확인

    root@2e0f473304c5:/# ps -aux
     

  • 패키지 설치
    root@2e0f473304c5:/# apt-get update && apt-get install

root@2e0f473304c5:/# hostname
2e0f473304c5
root@2e0f473304c5:/# cat /etc/hosts
172.17.0.2	2e0f473304c5
::1	localhost ip6-localhost ip6-loopback
fe00::0	ip6-localnet
ff00::0	ip6-mcastprefix
ff02::1	ip6-allnodes
ff02::2	ip6-allrouters
127.0.0.1	localhost
root@2e0f473304c5:/# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
6: eth0: <BROADCAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 02:42:ac:11:00:02 brd ff:ff:ff:ff:ff:ff
    inet 172.17.0.2/16 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::42:acff:fe11:2/64 scope link
       valid_lft forever preferred_lft forever
root@2e0f473304c5:/# ps -aux
USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root         1  0.0  0.1  18172  3336 ?        Ss   01:11   0:00 /bin/bash
root        20  0.0  0.1  15572  2168 ?        R+   01:14   0:00 ps -aux
root@2e0f473304c5:/# apt-get update && apt-get install
Ign http://archive.ubuntu.com trusty InRelease
Ign http://archive.ubuntu.com trusty-updates InRelease
Ign http://archive.ubuntu.com trusty-security InRelease
Ign http://archive.ubuntu.com trusty-proposed InRelease
Get:1 http://archive.ubuntu.com trusty Release.gpg [933 B]
Get:2 http://archive.ubuntu.com trusty-updates Release.gpg [933 B]
Get:3 http://archive.ubuntu.com trusty-security Release.gpg [933 B]
Get:4 http://archive.ubuntu.com trusty-proposed Release.gpg [933 B]
Get:5 http://archive.ubuntu.com trusty Release [58.5 kB]
Get:6 http://archive.ubuntu.com trusty-updates Release [59.7 kB]
Get:7 http://archive.ubuntu.com trusty-security Release [59.7 kB]
Get:8 http://archive.ubuntu.com trusty-proposed Release [110 kB]
Get:9 http://archive.ubuntu.com trusty/main Sources [1335 kB]
Get:10 http://archive.ubuntu.com trusty/restricted Sources [5335 B]
Get:11 http://archive.ubuntu.com trusty/universe Sources [7926 kB]
Get:12 http://archive.ubuntu.com trusty/main amd64 Packages [1743 kB]
Get:13 http://archive.ubuntu.com trusty/restricted amd64 Packages [16.0 kB]
Get:14 http://archive.ubuntu.com trusty/universe amd64 Packages [7589 kB]
Get:15 http://archive.ubuntu.com trusty-updates/main Sources [173 kB]
Get:16 http://archive.ubuntu.com trusty-updates/restricted Sources [1250 B]
Get:17 http://archive.ubuntu.com trusty-updates/universe Sources [110 kB]
Get:18 http://archive.ubuntu.com trusty-updates/main amd64 Packages [447 kB]
Get:19 http://archive.ubuntu.com trusty-updates/restricted amd64 Packages [6341 B]
Get:20 http://archive.ubuntu.com trusty-updates/universe amd64 Packages [280 kB]
Get:21 http://archive.ubuntu.com trusty-security/main Sources [58.9 kB]
Get:22 http://archive.ubuntu.com trusty-security/restricted Sources [40 B]
Get:23 http://archive.ubuntu.com trusty-security/universe Sources [11.8 kB]
Get:24 http://archive.ubuntu.com trusty-security/main amd64 Packages [192 kB]
Get:25 http://archive.ubuntu.com trusty-security/restricted amd64 Packages [40 B]
Get:26 http://archive.ubuntu.com trusty-security/universe amd64 Packages [62.4 kB]
Get:27 http://archive.ubuntu.com trusty-proposed/main amd64 Packages [171 kB]
Get:28 http://archive.ubuntu.com trusty-proposed/restricted amd64 Packages [40 B]
Fetched 20.4 MB in 27s (756 kB/s)
Reading package lists... Done
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 6 not upgraded.
root@2e0f473304c5:/#

Container naming

Step 4

$ docker run --name my_ubuntu -i -t ubuntu /bin/bash

$ docker run --name my_ubuntu -i -t ubuntu /bin/bash
root@9ea32e787155:/# exit
exit

$ docker ps -a
CONTAINER ID  IMAGE          COMMAND      CREATED         STATUS                      NAMES
9ea32e787155  ubuntu:latest  "/bin/bash"  45 seconds ago  Exited (0) 40 seconds ago   my_ubuntu
2e0f473304c5  ubuntu:latest  "/bin/bash"  10 minutes ago  Exited (130) 4 minutes ago  prickly_nobel

Starting a stopped container

Step 5

$ docker start my_ubuntu
$ docker start my_ubuntu
my_ubuntu

$ docker ps -a
CONTAINER ID  IMAGE          COMMAND      CREATED         STATUS                      NAMES
e2ef689fbd48  ubuntu:latest  "/bin/bash"  28 seconds ago  Up 3 seconds                my_ubuntu
2e0f473304c5  ubuntu:latest  "/bin/bash"  15 minutes ago  Exited (130) 9 minutes ago  prickly_nobel
$ docker start 2e0f473304c5
$ docker start 2e0f473304c5
2e0f473304c5

$ docker ps
CONTAINER ID  IMAGE          COMMAND      CREATED         STATUS         NAMES
e2ef689fbd48  ubuntu:latest  "/bin/bash"  52 seconds ago  Up 27 seconds  my_ubuntu
2e0f473304c5  ubuntu:latest  "/bin/bash"  16 minutes ago  Up 6 seconds   prickly_nobel

Creating daemonized container

Step 6

$ docker run --name my_daemon -d -i -t ubuntu /bin/sh -c "....."

$ docker run --name my_daemon -d ubuntu /bin/sh -c \
> "while true; do echo hello world; sleep 1; done"
701f707500362ffa82451a45bc85d3d591542e632745e3d8a5d531ddfac56fd5

$ docker ps
CONTAINER ID   IMAGE           COMMAND               CREATED          STATUS          NAMES
701f70750036   ubuntu:latest   "/bin/sh -c 'while t  18 seconds ago   Up 18 seconds   my_daemon

Seeing what's happening inside our container

Step 7

$ docker logs my_daemon
$ docker logs my_daemon
hello world
hello world
hello world
hello world
hello world
hello world
hello world
hello world
hello world
hello world
hello world
hello world
hello world
hello world
$ docker logs -f my_daemon
$ docker logs -f my_daemon
hello world
hello world
hello world
. . .
$ docker logs -ft my_daemon
$ docker logs -ft my_daemon
[2014-10-31T01:48:29.746942182Z] hello world
[2014-10-31T01:48:30.753369401Z] hello world
[2014-10-31T01:48:32.757641439Z] hello world
. . .

Inspecting the container's processes

Step 8

$ docker top my_daemon
$ docker top my_daemon
PID    USER   COMMAND
1658   root   /bin/sh -c while true; do echo hello world; sleep 1; done
2342   root   sleep 1

Stopping a daemonized container

Step 9

$ docker stop my_daemon
$ docker stop my_daemon
my_daemon

$ docker ps -a
CONTAINER ID  IMAGE          COMMAND              CREATED        STATUS                     NAMES
701f70750036  ubuntu:latest  "/bin/sh -c 'while t 15 minutes ago Exited (-1) 27 seconds ago my_daemon

Finding out more about our container

Step 10

$ docker inspect my_daemon
$ docker inspect my_daemon
[{
    "Args": [
        "-c",
        "while true; do echo hello world; sleep 1; done"
    ],
    "Config": {
        "AttachStderr": false,
        "AttachStdin": false,
        "AttachStdout": false,
        "Cmd": [
            "/bin/sh",
            "-c",
            "while true; do echo hello world; sleep 1; done"
        ],
        "CpuShares": 0,
        "Cpuset": "",
        "Domainname": "",
        "Entrypoint": null,
        "Env": [
            "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
        ],
        "ExposedPorts": null,
        "Hostname": "701f70750036",
        "Image": "ubuntu",
        "Memory": 0,
        "MemorySwap": 0,
        "NetworkDisabled": false,
        "OnBuild": null,
        "OpenStdin": false,
        "PortSpecs": null,
        "SecurityOpt": null,
        "StdinOnce": false,
        "Tty": false,
        "User": "",
        "Volumes": null,
        "WorkingDir": ""
    },
    "Created": "2014-10-31T01:39:11.567035219Z",
    "Driver": "aufs",
    "ExecDriver": "native-0.2",
    "HostConfig": {
        "Binds": null,
        "CapAdd": null,
        "CapDrop": null,
        "ContainerIDFile": "",
        "Devices": [],
        "Dns": null,
        "DnsSearch": null,
        "ExtraHosts": null,
        "Links": null,
        "LxcConf": [],
        "NetworkMode": "bridge",
        "PortBindings": {},
        "Privileged": false,
        "PublishAllPorts": false,
        "RestartPolicy": {
            "MaximumRetryCount": 0,
            "Name": ""
        },
        "VolumesFrom": null
    },
    "HostnamePath": "/mnt/sda1/var/lib/docker/containers/701f707500362ffa82451a45bc85d3d591542e632745e3d8a5d531ddfac56fd5/hostname",
    "HostsPath": "/mnt/sda1/var/lib/docker/containers/701f707500362ffa82451a45bc85d3d591542e632745e3d8a5d531ddfac56fd5/hosts",
    "Id": "701f707500362ffa82451a45bc85d3d591542e632745e3d8a5d531ddfac56fd5",
    "Image": "5506de2b643be1e6febbf3b8a240760c6843244c41e12aa2f60ccbb7153d17f5",
    "MountLabel": "",
    "Name": "/my_daemon",
    "NetworkSettings": {
        "Bridge": "",
        "Gateway": "",
        "IPAddress": "",
        "IPPrefixLen": 0,
        "MacAddress": "",
        "PortMapping": null,
        "Ports": null
    },
    "Path": "/bin/sh",
    "ProcessLabel": "",
    "ResolvConfPath": "/mnt/sda1/var/lib/docker/containers/701f707500362ffa82451a45bc85d3d591542e632745e3d8a5d531ddfac56fd5/resolv.conf",
    "State": {
        "ExitCode": -1,
        "FinishedAt": "2014-10-31T01:53:58.481142418Z",
        "Paused": false,
        "Pid": 0,
        "Restarting": false,
        "Running": false,
        "StartedAt": "2014-10-31T01:39:11.792736481Z"
    },
    "Volumes": {},
    "VolumesRW": {}
}
]%
$ docker inspect -f '{{ .State.Running }}' my_daemon
$ docker inspect -f '{{ .State.Running }}' my_daemon
false
$ docker inspect -f '{{ .State.ExitCode }}' my_daemon
$ docker inspect -f '{{ .NetworkSettings }}' my_daemon
map[PortMapping:<nil> Ports:<nil> Bridge: Gateway: IPAddress: IPPrefixLen:0 MacAddress:]
$ docker inspect -f '{{ .NetworkSettings }}' my_daemon
$ docker inspect -f '{{ .State.ExitCode }}' my_daemon
-1
$ docker inspect -f '{{.Name}} {{.State.Running}}' \
  my_ubuntu my_daemon
$ docker inspect -f '{{.Name}} {{.State.Running}}' my_ubuntu my_daemon
/my_ubuntu true
/my_daemon false

Deleting a container

Step 11

$ docker rm my_daemon
$ docker rm my_daemon
my_daemon

$ docker ps -a
CONTAINER ID   IMAGE   COMMAND   CREATED   STATUS   PORTS   NAMES

Play with Docker!

Getting Started with Docker

By bbugguj

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Getting Started with Docker

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