Ansible Inventory

From The Power of Many
Revision as of 03:39, 13 April 2020 by Snowshi (talk | contribs)

介绍

批量管理主机的时候, 需要预先定义主机或者组, 这个文件叫 Inventory, 默认位于 /etc/ansible/hosts.

/etc/ansible/hosts 文件的格式如下:

mail.example.com

[web]
web[1:5].example.com

[db]
db[1:3].example.com

[prod:children]
web
db
  • 指定主机 mail.example.com
  • 指定主机组 web, db
  • 主机组嵌套 prod

未被分组的主机默认在ungrouped组内

选择主机和组

举例主机清单

srv1.example.com
srv2.example.com
s1.lab.example.com
s2.lab.example.com

[web]
jupiter.lab.example.com
saturn.example.com

[db]
db1.example.com
db2.example.com
db3.example.com
#db[1:3].example.com

[lb]
lb1.lab.example.com
lb2.lab.example.com

[boston]
db1.example.com
jupiter.lab.example.com
lb2.lab.example.com

[london]
db2.example.com
db3.example.com
file1.lab.example.com
lb1.lab.example.com

[dev]
web1.lab.example.com
db3.example.com

[stage]
file2.example.com
db2.example.com

[prod]
lb2.lab.example.com
db1.example.com
jupiter.lab.example.com

[function:children]
web
db
lb
city

[city:children]
boston
london
environments

[environments:children]
dev
stage
prod
new

[new]
172.25.252.23
172.25.252.44

匹配所有主机

ansible all --list-hosts

匹配指定的主机或主机组

匹配单个主机

ansible db1.example.com --list-hosts

匹配多个主机

ansible 'db1.example.com,s1.lab.example.com' --list-hosts

匹配单个组

ansible prod --list-hosts

匹配多个组

ansbile 'london,boston' --list-hosts

匹配不属于任何组的主机

ansible ungrouped --list-hosts

通配符匹配

匹配 *.example.com

ansible '*.example.com' --list-hosts

通配符组合匹配

正则表达式匹配

通过 --limit 明确指定主机或组