ansible conditionals

Author: rahulwagh

part-9-ansible-conditionals/README.md

@@ -3,3 +3,17 @@
 ```bash
 ansible-playbook --inventory inventory/ansible-conditionals-playbook/hosts ansible-conditionals-playbook.yml
 ```
+
+
+## How to find apache is installed or not 
+
+```
+type -a apache2 
+```
+
+
+## SSH to EC2 instance
+
+```
+ssh -i /Users/rahulwagh/.ssh/aws_ec2_terraform [email protected] 
+```

part-9-ansible-conditionals/roles/custom-role/tasks/main.yml

@@ -0,0 +1,46 @@
+---
+## Boolean Conditional check for installing Apache
+- name: Install Apache web server
+  apt:
+    name: apache2
+    state: absent
+  when: install_apache_flag
+
+## Conditionals based on ansible_facts
+- name: How to use ansible_facts
+  debug:
+    var: ansible_facts['distribution']
+    #var: ansible_facts['distribution_major_version']
+    #var: ansible_facts['kernel_version']
+    #var: ansible_facts
+  when: ansible_facts['os_family'] == "Debian"
+
+## Putting multiple condition using ansible_facts
+- name: Combine conditions using ansible facts
+  debug:
+    var: ansible_facts['kernel_version']
+  when:
+    - ansible_facts['os_family'] == "Debian"
+    - ansible_facts['distribution_major_version'] == "20"
+
+## Setting complex condition
+- name: Setting complex condition
+  debug:
+    var: ansible_facts['kernel_version']
+  when: ansible_facts['os_family'] == "Debian" and ansible_facts['distribution_major_version'] | int >= 20
+
+## Register a variables and evaluate the value using when condition
+- name: Register a variable
+  ansible.builtin.command: cat /home/ubuntu/test-file.txt
+  register: test_file_content
+
+- name: Use the variable in conditional statement
+  debug:
+    var: test_file_content.stdout
+  when: test_file_content.stdout.find('hi') != -1 #and test_file_content is succeeded
+
+## When with Loop
+- name: Run with items greater than 5
+  ansible.builtin.command: echo {{ item }}
+  loop: [ 0, 2, 4, 6, 8, 10 ]
+  when: item > 5

part-9-ansible-conditionals/roles/custom-role/vars/main.yml

@@ -1,2 +1,2 @@
 ---
-var_file_variable: "Hello, world in main var.yml!"
+install_apache_flag: false