ansible 提示安装sshpass

之前用ansible一直用的root身份、机器之间又早早的做好了ssh信任、所以一直也没有出现什么问题。今天想想自己不能这么浪了，还是用回普通用户吧；

然而马上就遇到了第一个问题，ansible提示安装sshpass这个软件包。

一、ansible提示安装sshpass这个软件包：

ansible workstudio -m ping
workstudio | FAILED! => {
    "failed": true,
    "msg": "to use the 'ssh' connection type with passwords, you must install the sshpass program"
}

二、安装sshpass ：

yum -y install sshpass
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
 * epel: mirrors.ustc.edu.cn
Resolving Dependencies
--> Running transaction check
---> Package sshpass.x86_64 0:1.06-1.el7 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

==============================================================================================================================
 Package                       Arch                         Version                          Repository                  Size
==============================================================================================================================
Installing:
 sshpass                       x86_64                       1.06-1.el7                       epel                        21 k

Transaction Summary
==============================================================================================================================
Install  1 Package

Total download size: 21 k
Installed size: 38 k
Downloading packages:
warning: /var/cache/yum/x86_64/7/epel/packages/sshpass-1.06-1.el7.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID 352c64e5: NOKEY
Public key for sshpass-1.06-1.el7.x86_64.rpm is not installed
sshpass-1.06-1.el7.x86_64.rpm                                                                          |  21 kB  00:00:00     
Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
Importing GPG key 0x352C64E5:
 Userid     : "Fedora EPEL (7) <epel@fedoraproject.org>"
 Fingerprint: 91e9 7d7c 4a5e 96f1 7f3e 888f 6a2f aea2 352c 64e5
 Package    : epel-release-7-9.noarch (installed)
 From       : /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Installing : sshpass-1.06-1.el7.x86_64                                                                                  1/1 
  Verifying  : sshpass-1.06-1.el7.x86_64                                                                                  1/1 

Installed:
  sshpass.x86_64 0:1.06-1.el7                                                                                                 

Complete!

三、注意sshpass这个包并不在系统光盘里面，它是epel这人源中包涵的包

四、测试ansible是否可用了：

ansible workstudio -m ping
workstudio | SUCCESS => {
    "changed": false,
    "ping": "pong"
}

五、什么情况会出现要求安装sshpass:

　　如果在/etc/ansible/host 中配置的ssh登录用户使用的是密钥的认证是不会出现这个问题的；也就是说

　　1、在运行ansible的主机上要与被控机建立ssh信任。

　　2、在/etc/ansible/host文件中不要指ansible_ssh_pass这个变量，不然它就强制走密码认证了，而不是密钥。 

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