使用python的docker-py實現docker的api操作
前沿：
聽同事說，以後的dba申請可能有部分走其他部門的docker ，那邊貌似在搞一個類似docker的平臺管理系統，據說很霸道。於是乎，我自己也想嘗試寫一個簡單的doker管理平臺。 做為起步我先搞搞docker api，docker官網有個docker-py，用起來很是清爽簡單。
有關docker的更多的文章，大家可以到我的獨立部落格看看。 xiaorui.cc
首先安裝docker的python相關的模組。
[email protected]:~#pipinstalldocker-py Requirementalreadysatisfied(use--upgradetoupgrade):docker-pyin/usr/local/lib/python2.7/dist-packages Requirementalreadysatisfied(use--upgradetoupgrade):requests==2.2.1in/usr/lib/python2.7/dist-packages(fromdocker-py) Requirementalreadysatisfied(use--upgradetoupgrade):six>=1.3.0in/usr/lib/python2.7/dist-packages(fromdocker-py) Requirementalreadysatisfied(use--upgradetoupgrade):websocket-client==0.11.0in/usr/local/lib/python2.7/dist-packages(fromdocker-py) Requirementalreadysatisfied(use--upgradetoupgrade):mock==1.0.1in/usr/local/lib/python2.7/dist-packages(fromdocker-py) Requirementalreadysatisfied(use--upgradetoupgrade):coverage==3.7.1in/usr/local/lib/python2.7/dist-packages(fromdocker-py) Cleaningup...[email protected]:~# [email protected]:~#
咱們先檢視下已經下載好的模組
[[email protected] ~]$docker p_w_picpaths
http://rfyiamcool.blog.51cto.com/1030776/1539500 REPOSITORYTAGIMAGEIDCREATEDVIRTUALSIZE ubuntu_redislatest57672d1b5979Aboutanhourago257.6MB rastasheep/ubuntu-sshd14.04636d86f228c72daysago254.9MB rastasheep/ubuntu-sshd12.041147568d245b6daysago144.6MB rastasheep/ubuntu-sshd13.108a63145eed526daysago231.6MB rastasheep/ubuntu-sshdlatest47386e322f5d8daysago254.9MB lemonbar/centos6-sshlatestb78c71c001db11daysago296.9MB rastasheep/ubuntu-sshd12.10c9c48c3cb34c4weeksago188.9MB rastasheep/ubuntu-sshd13.04bf49ae3d55344weeksago213.1MB
檢視已經啟動的容器
[[email protected] ~]$docker ps -a
CONTAINERIDIMAGECOMMANDCREATEDSTATUSPORTSNAMES c5f6d0240531ubuntu_redis:latest/usr/sbin/sshd-DAboutanhouragoUpAboutanhour0.0.0.0:49154->22/tcpredis_sshd df7b7568fa7arastasheep/ubuntu-sshd:latest/usr/sbin/sshd-DAboutanhouragoUpAboutanhour0.0.0.0:49153->22/tcptest_sshd
檢視 docker 相關的版本
原文:http://rfyiamcool.blog.51cto.com/1030776/1539500
[[email protected] ~]$docker version
Clientversion:0.9.1 Goversion(client):go1.2.1 Gitcommit(client):3600720 Serverversion:0.9.1 Gitcommit(server):3600720 Goversion(server):go1.2.1 Laststableversion:1.1.2,pleaseupdatedocker [[email protected]~]$
好了，到現在為止 docker p_w_picpath有了，容器也有了，docker-py這個api也有了。。。
下面是我的操作的記錄，有過shell操作經驗的人，應該就很好上手的。
[[email protected] ~]$ipython
Python 2.7.6 (default, Mar 22 2014, 22:59:56)
Type "copyright", "credits" or "license" for more information.
IPython 1.2.1 -- An enhanced Interactive Python.
? -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help -> Python's own help system.
object? -> Details about 'object', use 'object??' for extra details.
In [1]: import docker
建立docker的連結，這裡是通過sock連線的。
In [2]: c = docker.Client(base_url='unix://var/run/docker.sock',version='1.9',timeout=10)
我們可以看到裡面有很多的功能。
In [3]: c.
c.adapters c.copy c.headers c.login c.proxies c.send
c.attach c.create_container c.history c.logs c.pull c.start
c.attach_socket c.create_container_from_config c.hooks c.max_redirects c.push c.stop
c.auth c.delete c.p_w_picpaths c.mount c.put c.stream
c.base_url c.diff c.import_p_w_picpath c.options c.remove_container c.tag
c.build c.events c.info c.params c.remove_p_w_picpath c.top
c.cert c.export c.insert c.patch c.request c.trust_env
c.close c.get c.inspect_container c.ping c.resize c.verify
c.commit c.get_adapter c.inspect_p_w_picpath c.port c.resolve_redirects c.version
c.containers c.get_p_w_picpath c.kill c.post c.restart c.wait
c.cookies c.head c.load_p_w_picpath c.prepare_request c.search
這裡是檢視已經部署好的p_w_picpaths映象
In [3]: c.p_w_picpaths()
Out[3]:
[{u'Created': 1407902496,
u'Id': u'57672d1b597912c7b6841c05c0e07e525890cfd64cbd37c84754e7d7e54ee766',
u'ParentId': u'47386e322f5deffbc04c777632e1f1ac7e6ddd6909ae6b9ce8d1d78dc2bb6d0c',
u'RepoTags': [u'ubuntu_redis:latest'],
u'Size': 2675587,
u'VirtualSize': 257554797},
{u'Created': 1407684299,
u'Id': u'636d86f228c7c6e844d1473245a9580d9c57fd0bfd1b5b9172aa5c168581978c',
u'ParentId': u'e882dd610d1ca64817106dcbda29b2c78536f5fb75f780583cc9fac0efe05398',
u'RepoTags': [u'rastasheep/ubuntu-sshd:14.04'],
u'Size': 0,
u'VirtualSize': 254925704},
{u'Created': 1407342004,
u'Id': u'1147568d245b369495b19b1943c0946a2b2d823d0a96b48bb7bee5f128090d29',
u'ParentId': u'12175cbcbe499c80dd71e3085467d9178a1b5cfa47ecf1463302e09fe2f09e58',
u'RepoTags': [u'rastasheep/ubuntu-sshd:12.04'],
u'Size': 0,
u'VirtualSize': 144645266},
{u'Created': 1407341844,
u'Id': u'8a63145eed52cf9ae6bdb064f370469d6fa3653f0da5d370ece9e270baf8d9cb',
u'ParentId': u'ca60f67629d2c43012fb53f714e60672c4ad5b61520bb306e3a35614190dcf76',
u'RepoTags': [u'rastasheep/ubuntu-sshd:13.10'],
u'Size': 0,
u'VirtualSize': 231639963},
{u'Created': 1407167259,
u'Id': u'47386e322f5deffbc04c777632e1f1ac7e6ddd6909ae6b9ce8d1d78dc2bb6d0c',
u'ParentId': u'a8bbc54283bbc341c703970ed429e4def6c034273ede59aaf451449164c95775',
u'RepoTags': [u'rastasheep/ubuntu-sshd:latest'],
u'Size': 0,
u'VirtualSize': 254879210},
{u'Created': 1406884906,
u'Id': u'b78c71c001db87eb2da7049f5f9610039afd3484f65e22a3284098792460040d',
u'ParentId': u'e13b39edfcb4c5e15f876c2824fea1d738fb3825437162fad497138123f3235b',
u'RepoTags': [u'lemonbar/centos6-ssh:latest'],
u'Size': 0,
u'VirtualSize': 296869021},
{u'Created': 1405333140,
u'Id': u'c9c48c3cb34c4b8305d7bae4f0c3c753fbca3ac96195e73e9fdab4a8fa24708a',
u'ParentId': u'30ffc511bbe11f6205cdc0f2749cadcc0c2eca4f7296285b1af867afcb6ef842',
u'RepoTags': [u'rastasheep/ubuntu-sshd:12.10'],
u'Size': 0,
u'VirtualSize': 188947523},
{u'Created': 1405333120,
u'Id': u'bf49ae3d55344648b354bddf22b2f15c48e2d74e52933404757a9eb470ac35e3',
u'ParentId': u'561b2d67fd0a80367e9ab98f9893ce6d36006dbb452e7c8693f028fcaa5f6c7f',
u'RepoTags': [u'rastasheep/ubuntu-sshd:13.04'],
u'Size': 0,
u'VirtualSize': 213124480}]
這裡是搜尋映象，比如我想搜下， ubuntu redis 字眼的，結果沒有搜到。 但是搜ubuntu_sshd有關的映象會發現有的。
原文:http://rfyiamcool.blog.51cto.com/1030776/1539500
In [5]: c.search('ubuntu_redis')
Out[5]: []
In [6]: c.search('ubuntu_sshd')
Out[6]:
[{u'description': u'',
u'is_official': False,
u'is_trusted': False,
u'name': u'pungoyal/ubuntu_sshd',
u'star_count': 0}]
這裡是下載映象
In []: c.pull('core9/docker-mongodb')
In [6]: c.create_container(p_w_picpath="ubuntu_redis", command="/usr/sbin/sshd -D",name="test_nima")
Out[6]:
{u'Id': u'15bd8d4ecd1a50604732e1f81763eb347a1cf8937da929799e65261b004894ce',
u'Warnings': None}
In [7]:
啟動容器
In [7]: c.start(container="15bd8d4ecd1a50604732e1f81763eb347a1cf8937da929799e65261b004894ce")
檢視日誌
In [8]: c.logs(container="15bd8d4ecd1a50604732e1f81763eb347a1cf8937da929799e65261b004894ce")
Out[8]: ''
我們再試圖關閉下這個容器，然後inspect看下他的執行狀態
In [18]: c.stop('15bd8d4ecd1a')
In [20]: re_info = c.inspect_container('15bd8d4ecd1a')
In [22]: re_info['State']['Running']
Out[31]: False
原文:http://rfyiamcool.blog.51cto.com/1030776/1539500
好了，我們通過docker shell看下剛才建立的結果。 我們在用python docker api的時候，建立了一個叫test_nima的容器。
篇幅的問題就不多說了， api幾乎包含了docker的功能，最少能滿足我的應用，及在開發中與運維平臺的對接。朋友的公司已經在用純node.js寫了套api，為公司內部服務。其實官網和社群提供了好幾個web ui，但是那畢竟是別人寫的。改起來不簡單。我打算在下篇文章會介紹下， 如何自己實現一套簡單的docker rest api 介面。
偶了 ！
轉載於:https://blog.51cto.com/rfyiamcool/1539500