#TIL : Ansible running host pattern

Ansible supports pattern to select and filter running hosts from all hosts. Here is some common pattern

• * : wildcard, standalone mean all
• group1,group2 : run hosts belong to group1 or group2
• *.web : run hosts belongs to group matches pattern. Ex: backend.web, frontend.web
• all:!abc : run all hosts exclude hosts belongs to group abc

Infrastructure by code ;)