docker-py的配置与使用

测试环境

75机：Red Hat Enterprise Linux Server 7.0，无外网访问权限

73机：Red Hat Enterprise Linux Server 7.0，无外网访问权限，已安装Docker Server

183机：OS X Yosemite 10.10.4，完全外网访问，用于下载安装包

配置过程

1. 如果开发环境可联网，则直接通过如下命令进行安装即可：

sudo pip install docker-py

如果没有安装pip命令，可通过如下命令进行安装：

sudo easy_install pip

2. 如果不能连外网，则需要从github的docker-py页面中下载zip包docker-py-master.zip进行离线安装。下载完之后，将zip包从183机scp到75机中：

scp docker-py-master.zip scs@10.11.150.75:/opt/scs/openxxs/

在75机上解压：

unzip docker-py-master.zip

查看setup.py文件，发现有三个依赖包需要安装，且有版本要求：

requirements = [
    'requests >= 2.5.2',
    'six >= 1.3.0',
    'websocket-client >= 0.32.0',
]

可从如下网站下载 requests、six和websocket-client 三个安装包（如果不知道具体url，运行sudo python setup.py install时会有提示）：

requests: https://pypi.python.org/simple/requests/
six: https://pypi.python.org/simple/six/
websocket-client: https://pypi.python.org/simple/websocket-client/

下载完成后scp到75机上再使用 tar -zxvf 解压，依照如下顺序安装：

cd requests-2.7.0
sudo python setup.py install
cd ../six-1.9.0
sudo python setup.py install
cd ../websocket_client-0.32.0
sudo python setup.py install
cd ../docker-py-master
sudo python setup.py install

3. 在73机上用同样方式安装docker-py

4. 以Unix Socket方式在73机上启动docker server：

[@tc_150_73 ~]$ sudo docker -d &
[1] 1255
[@tc_150_73 ~]$ INFO[0000] Listening for HTTP on unix (/var/run/docker.sock) 
INFO[0000] [graphdriver] using prior storage driver "devicemapper" 
WARN[0000] Running modprobe bridge nf_nat failed with message: , error: exit status 1 
INFO[0000] Loading containers: start.                   
..
INFO[0000] Loading containers: done.                    
INFO[0000] Daemon has completed initialization          
INFO[0000] Docker daemon                                 commit=0baf609 execdriver=native-0.2 graphdriver=devicemapper version=1.7.0

在73机上开启若干个docker容器后进行测试，测试如下：

[@tc_150_73 ~]$ python
Python 2.7.5 (default, Apr  9 2015, 11:03:32) 
[GCC 4.8.3 20140911 (Red Hat 4.8.3-9)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from docker import Client
>>> clt = Client(base_url='unix://var/run/docker.sock')
>>> clt.containers()
[{u'Status': u'Up About a minute', u'Created': 1437743168, u'Image': u'centos:7', u'Labels': {}, u'Ports': [], u'Command': u'/bin/bash', u'Names': [u'/suspicious_galileo'], u'Id': u'a81dbf9200fbf6a4180e8b8e80f4fe30b3f8be612ea0e58ac04fb65080429043'}]
>>>

可以看到正常显示了正在运行中的容器，Unix Socket方式测试成功。

5. 关闭73机上刚才开启的docker server（使用service docker stop 和 systemctl docker stop方式停止无效）：

sudo killall docker

6. 以TCP方式在73机上启动docker server：

[@tc_150_73 ~]$ sudo docker -H 0.0.0.0:2375 -d &
[1] 1625
[@tc_150_73 ~]$ WARN[0000] /!\ DON'T BIND ON ANY IP ADDRESS WITHOUT setting -tlsverify IF YOU DON'T KNOW WHAT YOU'RE DOING /!\ 
INFO[0000] Listening for HTTP on tcp (0.0.0.0:2375)     
INFO[0000] [graphdriver] using prior storage driver "devicemapper" 
WARN[0000] Running modprobe bridge nf_nat failed with message: , error: exit status 1 
INFO[0000] Loading containers: start.                   
....
INFO[0000] Loading containers: done.                    
INFO[0000] Daemon has completed initialization          
INFO[0000] Docker daemon                                 commit=0baf609 execdriver=native-0.2 graphdriver=devicemapper version=1.7.0

在75机上进行测试，测试结果如下：

[@tc_150_75 ~]$ python
Python 2.7.5 (default, Apr  9 2015, 11:03:32) 
[GCC 4.8.3 20140911 (Red Hat 4.8.3-9)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from docker import Client
>>> clt = Client(base_url='tcp://10.11.150.73:30001')
>>> clt.containers()
[]

TCP方式测试成功（此时显示的是73机上的正在运行的容器状态，没有，所以为空）。

openxxs