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  • Committer: Suren A. Chilingaryan
  • Date: 2017-04-03 02:45:17 UTC
  • Revision ID: csa@suren.me-20170403024517-dwzj0z0k1cmhxm7u
Restructuring, OpenShift, Ansible, Git

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Administration/Server/Provisioning/ansible/templates.txt
 
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Templates (Jinja2)
 
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=========
 
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 - Substituting variables or expressions '{{ <expression> }}'
 
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        "{{ variable }}"
 
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 Type mangling:
 
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         "{{ (variable1 | int) + (variable2 | int) }}"
 
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 Also can be part of the longer strings:
 
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         "/dev/sda{{ (variable1 | int) + (variable2 | int) }}"
 
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 - Accessing various variables
 
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    {{ lookup('env','HOME') }}                                          - shell environment
 
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    {{ hostvars[groups['webservers'][0]] }}                             - hosts in the groups defined in inventory (this will reference to the root of all gathered facts)
 
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 - Dynamic variables
 
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    {{ ansible_lvm['lvs'][<var_holding_lv>]['vg'] }}
 
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 - A complete J2 templates files can be substantiated and installed in specified locations using the 'template' module
 
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    template: src="path/to/template.j2" dst="/path/destination/file" owner="root" group="root' mode="0755"