SaltStack之salt-ssh

1. salt-ssh介绍

salt-ssh可以让我们不需要在受控机上安装salt-minion客户端也能够实现管理操作。

1.1 salt-ssh的特点

远程系统需要Python支持,除非使用-r选项发送原始ssh命令
salt-ssh是一个软件包,需安装之后才能使用,命令本身也是salt-ssh
salt-ssh不会取代标准的Salt通信系统,它只是提供了一个基于SSH的替代方案,不需要ZeroMQ和agent
请注意,由于所有与Salt SSH的通信都是通过SSH执行的,因此它比使用ZeroMQ的标准Salt慢得多

1.2 salt-ssh远程管理的方式

salt-ssh有两种方式实现远程管理,一种是在配置文件中记录所有客户端的信息,诸如 IP 地址、端口号、用户名、密码以及是否支持sudo等;另一种是使用密钥实现远程管理,不需要输入密码。

2. salt-ssh管理

在 master 上安装 salt-ssh

[root@node1 ~]# yum -y install salt-ssh

2.1 通过使用用户名密码的SSH实现远程管理

修改配置文件,添加受控机信息

[root@node1 ~]# vim /etc/salt/roster 

# 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
node1:
  host: 192.168.136.164
  user: root
  passwd: 123456
node2:
  host: 192.168.136.165
  user: root
  passwd: 123456

测试连通性

[root@node1 ~]# salt-ssh '*' test.ping
node2:
    ----------
    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 '192.168.136.165 (192.168.136.165)' can't be established.
        ECDSA key fingerprint is SHA256:xb2UGeSbbMPWguFesJfqUhvaplJ9KuOCUifgRniaDSU.
        ECDSA key fingerprint is MD5:ad:94:a5:3d:68:1d:a6:b4:0a:f9:94:80:c8:ba:66:12.
        Are you sure you want to continue connecting (yes/no)? 
node1:
    ----------
    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 '192.168.136.164 (192.168.136.164)' can't be established.
        ECDSA key fingerprint is SHA256:uN0Vd9u/GGh1TgTNrXBRphj1OpHmNrDfRpU0H0l14tQ.
        ECDSA key fingerprint is MD5:07:4c:6d:0a:1b:ac:d0:c0:d1:b2:95:e3:a8:a3:65:e6.
        Are you sure you want to continue connecting (yes/no)? 

从上面的信息可以看出,第一次访问时需要输入 yes/no ,但是 saltstack 是不支持交互式操作的,所以为了解决这个问题,我们需要对其进行设置,让系统不进行主机验证。

[root@node1 ~]# vim ~/.ssh/config

StrictHostKeyChecking no
[root@node1 ~]# salt-ssh '*' test.ping
node1:
    True
node2:
    True
posted @ 2020-02-28 15:55  李平的博客  阅读(287)  评论(0编辑  收藏  举报