Fabric2 template

This is a template for running commands parallelly in multi-servers with python fabric 2.4, because some functions, such as sudo and put, are not implentmented in ThreadingGroup.

Requirement

pip install fabric==2.4

How to use

• test_connection(hosts)

  run hostname for each host, print exception for failed connection.

  hosts = ['user@host1:port', 'user@host2:port']

• parallelly_run(hosts, operations)

  run commands parallelly

  supported functions: connection.run, connection.sudo, connection.put

  hosts = ['user@host1:port', 'user@host2:port']
  
  operations = [
      # [files or commands, function: put, run (default) or sudo, other parameters]
      # or  
      # [ file list or command list, function: put, run (default) or sudo, other parameters (can be dict, if same for all hosts) or other parameter list]
      # Detailed parameters can be found in fabirc.connection.
      ['./test.md', 'put', {}],
      ['whoami'],
      ['whoami', 'sudo'],
      ['whoami', 'sudo', {'user': 'another_user'}],
      ["""cat ~/test.md
  whoami"""],
      [['./test.md', './test.md'], 'put',
          [{'remote': '1.txt'}, {'remote': '2.txt'}]],
  
      [['cat 1.txt', 'cat 2.txt']],
      ]

  $ python template.py
  
  excute: put ./test1.md
  
  excute: run whoami
  user
  user
  
  excute: sudo whoami
  root
  root
  
  excute: sudo whoami
  another_user
  another_user
  
  excute: run cat ~/test1.md
  hello test 1.
  hello test 1.
  
  excute: run whoami
  user
  user
  
  excute diff commands, example: put ./test1.md
  
  excute diff commands, example: run cat 1.txt
  hello test 2.
  hello test 1.