salt-ssh的使用（不需要安装客户端）
什么情况下才使用salt-ssh，有一些比较老的红帽服务器，也有一些不方便安装salt-minion客户端。总会有一些服务器比较难安装上salt-minion的。好了，下面来说说简单配置
默认使用roster配置文件
vim /etc/salt/roster
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# Sample salt-ssh config file
#web1:
#host: 192.168.42.1 # The IP addr or DNS hostname
#user: fred # Remote executions will be executed as user fred
#passwd: foobarbaz# The password to use for login, if omitted, keys are used
#sudo: True # Whether to sudo to root, not enabled by default
#web2:
#host: 192.168.42.2
hdd: //ID名字可以随便定义
host: 10.0.0.221
user: hdd
passwd: 66666
sudo: Ture
已经完成配置！下面直接使用salt-ssh
第一次运行没有添加-i，未能如期运行。
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root@salt-master ~]# salt-ssh "*" -r 'free -m'
hdd:
----------
retcode:
254
stderr:
stdout:
The host key needs to be accepted, to auto accept run salt-ssh with the -i flag:
The authenticity of host '10.0.0.221 (10.0.0.221)' can't be established.
ECDSA key fingerprint is b9:36:f5:d8:3a:88:94:93:43:78:8e:cb:43:78:8e:cb.
Are you sure you want to continue connecting (yes/no)?
#
添加-i参数继续执行命令
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# salt-ssh "*" -r 'free -m' -i
hdd:
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retcode:
0
stderr:
Warning: Permanently added '10.0.0.221' (ECDSA) to the list of known hosts.
stdout:
hdd@10.0.0.221's password:
total used free shared buffers cached
Mem: 7856 6698 1157 18 317 4298
-/+ buffers/cache: 2082 5773
Swap: 8061 0 8061
#
# salt-ssh "hdd" -r 'df -h'
hdd:
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retcode:
0
stderr:
stdout:
Filesystem SizeUsed Avail Use% Mounted on
udev 3.9G4.0K3.9G 1% /dev
tmpfs 786M1.5M785M 1% /run
/dev/sda1 910G454G410G53% /
none 4.0K 04.0K 0% /sys/fs/cgroup
none 5.0M 05.0M 0% /run/lock
none 3.9G 84K3.9G 1% /run/shm
none 100M 12K100M 1% /run/user
但是我有一个问题，保存的密钥放在哪里呢？暂时我未有发现。
11111111111111111111111 111111111111 111111111111111111 2222222222222222222222222
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