Ex294 The last day before exam: review common magic variables and filters

Filters

{{ myvar | default("NONE") }}

{{ 'plainpass' | password_hash("sha512", 65534|random(seed=inventory_hostname)|string ) }}

Magic variables

inventory_hostname

group_names

hostvars

groups

# generate /etc/hosts for DEV group nodes

$ cat collect.j2

{% for host in groups['DEV'] %}

{{ hostvars[host]['ansible_default_ipv4']['address'] }}{{ hostvars[host]['ansible_fqdn'] }}

{% endofr %}