salt-ssh
文章目录
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。
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
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。
salt-ssh管理
在 master 上安装 salt-ssh
[root@master ~]# yum -y install salt-ssh
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@master ~]# vim /etc/salt/roster
[root@master ~]# cat /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
lamp:
host: 192.168.240.70
user: root
passwd: 1
测试连通性
[root@master ~]# salt-ssh '*' test.ping
vm1:
----------
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 '192.168.69.202 (192.168.69.202)' can't be established.
ECDSA key fingerprint is SHA256:Nz8CAwwL3HRh/Lvqejqa+eiV3A09xGYYfG2A/W8wRPs.
ECDSA key fingerprint is MD5:8c:b3:22:14:7a:8a:bc:34:f9:9d:3c:3a:07:8a:96:20.
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@master ~]# vim ~/.ssh/config
[root@master ~]# cat .ssh/config
StrictHostKeyChecking no
[root@master ~]# salt-ssh lamp test.ping
lamp:
True
通过salt-ssh初始化系统安装salt-minion
安装 salt-ssh
[root@master ~]# yum -y install salt-ssh
修改roster配置文件，添加受控主机
[root@master ~]# vim /etc/salt/roster
[root@master ~]# cat /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
lamp:
host: 192.168.240.70
user: root
passwd: 1
测试连通性
[root@master ~]# salt-ssh lamp test.ping
lamp:
True
执行状态命令，初始化系统，安装salt-minion
[root@master init]# cat yum/main.sls
{% if grains['os'] == 'RedHat' %}
/etc/yum.repos.d/centos-{{ grains['osrelease'] }}.repo
file.managed:
- source: salt://init/yum/files/centos-{{ grains['osrelease'] }}.repo
- user: root
- group: root
- mode: '0644'
{% endif %}
/etc/yum.repos.d/epel.repo:
file.managed:
- source: salt://init/yum/files/epel.repo
- user: root
- group: root
- mode: '0644'
/etc/yum.repos.d/salt.repo:
file.managed:
- source: salt://init/yum/files/salt.repo
- user: root
- group: root
- mode: '0644'
[root@master init]# cat salt_minion/minion.sls
include:
- init.yum.main
salt-minion:
pkg.installed:
- pkg: salt-minion
/etc/salt/minion
file.managed:
- source: salt://init/salt_minion/files/minion.j2
- user: root
- user: root
- mode: '0644'
- template: jinja
salt-minion.service:
service.running:
- enable: true
[root@master salt_minion]# salt-ssh lamp state.sls init.salt_minion.minion
lamp:
----------
ID: /etc/yum.repos.d/epel.repo
Function: file.managed
Result: True
Comment: File /etc/yum.repos.d/epel.repo is in the correct state
Started: 02:36:34.403639
Duration: 29.538 ms
Changes:
----------
ID: /etc/yum.repos.d/salt.repo
Function: file.managed
Result: True
Comment: File /etc/yum.repos.d/salt.repo is in the correct state
Started: 02:36:34.433416
Duration: 5.386 ms
Changes:
----------
ID: salt-minion
Function: pkg.installed
Result: True
Comment: All specified packages are already installed
Started: 02:36:35.236310
Duration: 706.151 ms
Changes:
----------
ID: /etc/salt/minion
Function: file.managed
Result: True
Comment: File /etc/salt/minion updated
Started: 02:36:35.942680
Duration: 41.556 ms
Changes:
----------
mode:
0644
----------
ID: salt-minion.service
Function: service.running
Result: True
Comment: The service salt-minion.service is already running
Started: 02:36:35.985279
Duration: 36.332 ms
Changes:
Summary for lamp
------------
Succeeded: 5 (changed=1)
Failed: 0
------------
Total states run: 5
Total run time: 818.963 ms