ansible 実行速度 ControlMaster Pipelining

ControlMaster: 有効 ＆ pipeline: 有効

[defaults]
transport = ssh

[ssh_connection]
pipeline = true
ssh_args = -o ControlMaster=auto -o ControlPersist=300s 

https://blog.mosuke.tech/entry/2015/12/01/181304/