Host/Group Target Patterns

Host/Group Target Patterns
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OR (group1:group2)
NOT (!group2)
Wildcard (web*.ex.com)
Regex (~web[0-9]+) --> All systems that have web and number at the end.

Complex Patterns:
--
AND (group1:&group2)  --> hosts, which are joined in both group1 and group2 (Intersection).

Bit more complex:
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webservers:&prod:!python3  --> Hosts defined in Webservers AND Prod but NOT in Python3






Example:
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 To stop firewall:

  ansible webservers:dbservers -i inventory -m service -a "name=iptables state=stopped" --sudo