让你的ansible飞起来

vim /etc/ssh/ssh_config

Host *
	GSSAPIAuthentication yes
# If this option is set to yes then remote X11 clients will have full access
# to the original X11 display. As virtually no X11 client supports the untrusted
# mode correctly we set this to yes.
	ForwardX11Trusted yes
# Send locale-related environment variables
	SendEnv LANG LC_CTYPE LC_NUMERIC LC_TIME LC_COLLATE LC_MONETARY LC_MESSAGES
	SendEnv LC_PAPER LC_NAME LC_ADDRESS LC_TELEPHONE LC_MEASUREMENT
	SendEnv LC_IDENTIFICATION LC_ALL LANGUAGE
	SendEnv XMODIFIERS
	ControlMaster yes      # 这个是新增的
	ControlPath   /tmp/%r@%h:%p   # 这个是新增的
	ControlPersist 10m    # 这个是新增的

[root@host-172-20-6-120 playbooks]# ssh -O check 172.20.6.121
root@172.20.6.121‘s password: 
Master running (pid=16802)    # 有这个说明开启成功

上面的不是”零“ 而是大写的0

[root@host-172-20-6-120 playbooks]# time ssh 172.20.6.121 /bin/true
root@172.20.6.121‘s password: 
ControlSocket /tmp/root@172.20.6.121:22 already exists, disabling multiplexing

real	0m2.137s
user	0m0.032s
sys	0m0.005s

# 启用pipelining 的ansible.cfg

[defaults]
pipelining = True