SaltStack实战之配置管理-YAML编写技巧
学习 SaltStack
1. 概述和内容
salt包含一个健壮且灵活的配置管理框架，它构建在远程执行核心上。这个框架运行于minion上，它通过特定呈现语言的state文件，即可轻松地同时配置成千上万的主机。
后面配置管理所介绍的内容有：
file_roots
设置状态文件的位置env
Base环境
开发、测试、预生产环境、生产环境SLS
YAML
Jinja
编写技巧state模块
file
pkg
service
cmdstate关系
require
require_in
watch
watch_in
unless
onlyif- 实践案例
LAMP
LNMP
Zabbix
Haproxy+keepalived - 项目实战
OpenStack自动化部署
2. YAML编写技巧
2.1 缩进
- YAML使用一个固定的缩进风格表示数据层结构关系。salt需要每个缩进级别使用2个空格。
- 不要使用table键。
2.2 冒号
冒号2边表示key和value。
my_key: my_value second_key: second_value2.3 短横线
想要表示列表项，使用一个短横杠加一个空格。多个项使用同样的缩进级别作为同一列表的一部分。
my_dictionary: - list_value_one - list_value_two - list_value_three3. 同步文件实战
下面介绍同步Linux下dns配置文件/etc/resolv.conf。
vim /etc/salt/master
state_top: top.sls
file_roots: base: - /srv/salt dev: - /srv/salt/dev test: - /srv/salt/test prod: - /srv/salt/prod[[email protected] salt]# mkdir dev test prod[[email protected] salt]# cat top.sls yamlbase: ‘*‘: - init.dns[[email protected] salt]# cat init/dns.sls /etc/resolv.conf: file.managed: - source: - salt://init/files/resolv.conf - user: root - group: root - mode: 644[[email protected] salt]# cat init/files/resolv.conf nameserver 10.1.0.2nameserver 114.114.114.114执行文件同步
[[email protected] salt]# salt ‘*‘ state.highstatenode1.test.com:---------- ID: /etc/resolv.conf Function: file.managed Result: True Comment: File /etc/resolv.conf updated Started: 17:50:20.016276 Duration: 39.221 ms Changes: ---------- diff: --- +++ @@ -1,3 +1,2 @@ -# Generated by NetworkManager nameserver 10.1.0.2 nameserver 114.114.114.114
Summary for node1.test.com------------Succeeded: 1 (changed=1)Failed: 0------------Total states run: 1Total run time: 39.221 msmaster.test.com:---------- ID: /etc/resolv.conf Function: file.managed Result: True Comment: File /etc/resolv.conf updated Started: 01:47:36.747919 Duration: 32.041 ms Changes: ---------- diff: --- +++ @@ -1,3 +1,2 @@ -# Generated by NetworkManager nameserver 10.1.0.2 nameserver 114.114.114.114
Summary for master.test.com------------Succeeded: 1 (changed=1)Failed: 0------------Total states run: 1Total run time: 32.041 msnode2.test.com:---------- ID: /etc/resolv.conf Function: file.managed Result: True Comment: File /etc/resolv.conf updated Started: 17:50:20.642481 Duration: 58.623 ms Changes: ---------- diff: --- +++ @@ -1,3 +1,2 @@ -# Generated by NetworkManager nameserver 10.1.0.2 nameserver 114.114.114.114
Summary for node2.test.com------------Succeeded: 1 (changed=1)Failed: 0------------Total states run: 1Total run time: 58.623 ms[[email protected] salt]# .test.com:---------- ID: /etc/resolv.conf Function: file.managed Result: True Comment: File /etc/resolv.conf updated Started: 01:40:04.210096 Duration: 29.966 ms Changes: ---------- diff: --- +++ @@ -1,2 +1,3 @@ # Generated by NetworkManager nameserver 10.1.0.2 +nameserver 114.114.114.114
Summary for master.test.com------------Succeeded: 1 (changed=1)Failed: 0------------Total states run: 1Total run time: 29.966 msnode1.test.com:---------- ID: /etc/resolv.conf Function: file.managed Result: True Comment: File /etc/resolv.conf updated Started: 17:42:47.647214 Duration: 50.04 ms Changes: ---------- diff: --- +++ @@ -1,2 +1,3 @@ - +# Generated by NetworkManager nameserver 10.1.0.2 +nameserver 114.114.114.114
Summary for node1.test.com------------Succeeded: 1 (changed=1)Failed: 0------------Total states run: 1Total run time: 50.040 msnode2.test.com:---------- ID: /etc/resolv.conf Function: file.managed Result: True Comment: File /etc/resolv.conf updated Started: 17:42:48.218295 Duration: 70.125 ms Changes: ---------- diff: --- +++ @@ -1,2 +1,3 @@ - +# Generated by NetworkManager nameserver 10.1.0.2 +nameserver 114.114.114.114
Summary for node2.test.com------------Succeeded: 1 (changed=1)Failed: 0------------Total states run: 1Total run time: 70.125 ms在minion端查看下/etc/resolv.conf。
[[email protected] ~]# cat /etc/resolv.confnameserver 10.1.0.2nameserver 114.114.114.114[[email protected] ~]# 发现文件已更新。
时间： 2024-08-24 09:31:22