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== Inventory of managed nodes == | == Inventory of managed nodes == | ||
https://www.digitalocean.com/community/tutorials/how-to-manage-multistage-environments-with-ansible | https://www.digitalocean.com/community/tutorials/how-to-manage-multistage-environments-with-ansible | ||
− | Inventory is defined in <code> | + | Inventory is defined in <code>/etc/ansible/hosts</code> file. It allows you to define your managed hosts by hostname or IP address, and group them, such as "my_webservers_group" in our example in INI format. |
Groups of groups, hierarchies, is also supported using (:children) keyword: <code>[YOUR_NEW_GROUP_OF_GROUPS:children]</code> <ref>https://www.digitalocean.com/community/tutorials/how-to-manage-multistage-environments-with-ansible</ref> | Groups of groups, hierarchies, is also supported using (:children) keyword: <code>[YOUR_NEW_GROUP_OF_GROUPS:children]</code> <ref>https://www.digitalocean.com/community/tutorials/how-to-manage-multistage-environments-with-ansible</ref> | ||
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You can also read Ansible best practices<ref>http://docs.ansible.com/ansible/latest/user_guide/playbooks_best_practices.html</ref> | You can also read Ansible best practices<ref>http://docs.ansible.com/ansible/latest/user_guide/playbooks_best_practices.html</ref> | ||
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+ | '''Basic operations with your inventory:''' | ||
+ | * List managed hosts: | ||
+ | :: <code> ansible all --list-hosts</code> | ||
+ | :: <code> ansible YOUR_GROUP --list-hosts</code> | ||
+ | :: <code> [[ansible-inventory --graph]]</code> | ||
+ | :: <code> [[ansible-inventory --list]] </code> | ||
+ | :: To filter just one group of host: <code>ansible-inventory --list | jq '.["YOUR_GROUP_NAME"]' </code> | ||
+ | |||
+ | * List defined groups | ||
+ | ::<code>ansible localhost -m debug -a 'var=groups.keys()'</code> | ||
+ | ::<code>ansible localhost -m debug -a 'var=groups'</code> | ||
+ | |||
== Activities == | == Activities == | ||
* Read about Ansible dynamic inventory https://docs.ansible.com/ansible/latest/user_guide/intro_dynamic_inventory.html | * Read about Ansible dynamic inventory https://docs.ansible.com/ansible/latest/user_guide/intro_dynamic_inventory.html | ||
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== See also == | == See also == | ||
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* {{ansible}} | * {{ansible}} | ||
[[Category:Ansible]] | [[Category:Ansible]] |
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