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--- ansible:ansible_best_practice [2021/09/09 01:38]
manu
+++ ansible:ansible_best_practice [2025/11/18 13:26] (current)
manu
@@ Line 2: / Line 2: @@
 Reference:  xavki (youtube)
-/etc/ansible/ansible.cfg
+Use the command
+<cli prompt='#'>
+# ansible-config [init|list|view|dump|validate]
+</cli>
+**/etc/ansible/ansible.cfg**
 <code>
 [defaults]
+inventory = /etc/ansible/inventory
 host_key_checking = False             # don't ask for accepting ssh keys
 callback_whithelist = profile_task    # Print tasks duration
 forks = 30                            # Parallel sessions
+log_path = ./ansible_log.txt
 [ssh_connection]
@@ Line 19: / Line 26: @@
 [defaults]
 fact_caching = jsonfile
-fact_caching_timeout = 3600
+fact_caching_timeout = 3600          # 1 hour
 fact_caching_connection = /tmp/myfacts
 </code>
+<code>
+[defaults]
+ask_pass = True
+[privilege_escalation]
+sudo_user = root
+ask_sudo_pass = True
+become = True
+become_user = root
+become_ask_pass = True
+vault_password_file = /mypath/vault_file
+</code>
+Test you playbook
+<cli prompt='#'>
+# ansible-playbook -i inventories/production myplaybook.yml --check
+</cli>
+Or
+<cli prompt='#'>
+# ansible-playbook -i inventories/production myplaybook.yml --dry-run
+</cli>
+=== Using setup module ===
+Collect directly gather facts
+<cli prompt='#'>
+# ansible-playbook -i inventory.yml all -m setup
+</cli>
+Filter on a specific setting
+<cli prompt='#'>
+# ansible-playbook -i inventory.yml all -m setup -a "filter=ansible_user*"
+</cli>
+===== Create a base folder structure =====
+<cli prompt='$'>
+[ansible@lnxa100 ~]$ ansible-galaxy init test-role-1
+- Role test-role-1 was created successfully
+[ansible@lnxa100 ~]$ ll
+drwxrwxr-x  2 ansible ansible  39 Mar  6 13:17 facts
+drwxrwxr-x 10 ansible ansible 154 Mar  6 14:21 test-role-1
+[ansible@lnxa100 ~]$ cd test-role-1/
+[ansible@lnxa100 test-role-1]$ ll
+drwxrwxr-x 2 ansible ansible   22 Mar  6 14:21 defaults
+drwxrwxr-x 2 ansible ansible    6 Mar  6 14:21 files
+drwxrwxr-x 2 ansible ansible   22 Mar  6 14:21 handlers
+drwxrwxr-x 2 ansible ansible   22 Mar  6 14:21 meta
+-rw-rw-r-- 1 ansible ansible 1328 Mar  6 14:21 README.md
+drwxrwxr-x 2 ansible ansible   22 Mar  6 14:21 tasks
+drwxrwxr-x 2 ansible ansible    6 Mar  6 14:21 templates
+drwxrwxr-x 2 ansible ansible   39 Mar  6 14:21 tests
+drwxrwxr-x 2 ansible ansible   22 Mar  6 14:21 vars
+</cli>
+===== Inventory ====
+You can export the variable or use the default
+<cli prompt='#'>
+export ANSIBLE_HOSTS=~/hosts
+</cli>
+Inventory type file can be json, text or yml
+<cli prompt='#'>
+# vi /etc/ansible/hosts
+[servers]
+server1 ansible_host=203.0.113.111
+server2 ansible_host=203.0.113.112
+server3 ansible_host=203.0.113.113
+[all:vars]
+ansible_python_interpreter=/usr/bin/python3
+</cli>
+List your inventory:
+<cli prompt='#'>
+# ansible-inventory --list -y
+all:
+  children:
+    servers:
+      hosts:
+        server1:
+          ansible_host: 203.0.113.111
+          ansible_python_interpreter: /usr/bin/python3
+        server2:
+          ansible_host: 203.0.113.112
+          ansible_python_interpreter: /usr/bin/python3
+        server3:
+          ansible_host: 203.0.113.113
+          ansible_python_interpreter: /usr/bin/python3
+    ungrouped: {}
+</cli>
+Another example
+<cli prompt='#'>
+# vi /etc/ansible/hosts
+[servers]
+server1 ansible_host=203.0.113.111
+server2 ansible_host=203.0.113.112
+server3 ansible_host=203.0.113.113
+[all:vars]
+ansible_python_interpreter=/usr/bin/python3
+[linux:var]
+ansible_connection=ssh
+ansible_ssh_user=ansible
+ansible_ssh_pass=secret_password
+ansible_python_interpreter='/usr/bin/env python3'
+ansible_become_method=sudo
+</cli>
+==== Send result by mail ====

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