[Docker] 通过python操作Docker

通过python操作Docker

安装docker python包

pip install docker

创建client

1. 从environment里面拿

import docker
client = docker.from_env()

2. 指定服务

from docker import DockerClient
client2 = DockerClient(base_url='unix://var/run/docker.sock')

运行容器

命令：client.containers.run()

• Returns:

  • The container logs, either STDOUT, STDERR, or both, depending on the value of the stdout and stderr arguments.

  • STDOUT and STDERR may be read only if either json-file or journald logging driver used. Thus, if you are using none of these drivers, a None object is returned instead. See the Engine API documentation for full details.

  • If detach is True, a Container object is returned instead.

• Raises:

  • docker.errors.ContainerError – If the container exits with a non-zero exit code and detach is False.
  • docker.errors.ImageNotFound – If the specified image does not exist.
  • docker.errors.APIError – If the server returns an error.

1. 默认等container运行完并返回logs, 类似docker run。

client.containers.run('<image>', '<command>')

example:

client.containers.run('alpine, 'echo hello world')

2. 如果detach是True，会运行container并立即返回Container对象，类似docker run -d.

container = client.containers.run('<image>', detach=True)
container.logs()

3. 查看log

• 得到byte类型log

container.logs()

• 得到可遍历log

logs = container.logs(stream=True)
for line in logs:
	print(output)

4. 查看返回转态码

exit_code = container.wait()
print(exit_code)

output:

{'Error': None, 'StatusCode': 0}