Ansible environment variables

Author: rahulwagh

ansible-environment-variable/README.md

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+## Run playbook
+
+```bash
+ansible-playbook --inventory inventory/ansible-env-variable-playbook/hosts ansible-env-variable-playbook.yml
+```

ansible-environment-variable/ansible-env-variable-playbook.yml

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+---
+- name: Example Ansible playbook for Handlers
+  hosts: all
+  become: yes
+  remote_user: ubuntu
+  roles:
+    - custom-role
+
+  environment:
+    EXAMPLE: "Foo bar"
+    MY_VAR1: "variable value1"
+
+  tasks:
+    # Environment variable at Playbook Level
+    - name: Environment var at Playbook Level
+      ansible.builtin.command: "echo $EXAMPLE"
+
+    # Environment variable only for tasks
+    - name: Environment var for only task Level
+      environment:
+        MY_TASK_LEVEL_VARIABLE: "Hello World!"
+      ansible.builtin.command: "echo $MY_TASK_LEVEL_VARIABLE"
+
+    #Testing Environment variable
+    - name: Testing both playbook level as well as environment level vars.
+      ansible.builtin.command: "echo $EXAMPLE $MY_TASK_LEVEL_VARIABLE "
+
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ansible-environment-variable/inventory/ansible-env-variable-playbook/hosts

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+[default]
+ec2-18-185-110-39.eu-central-1.compute.amazonaws.com ansible_ssh_private_key_file=/Users/rahulwagh/.ssh/aws_ec2_terraform

ansible-environment-variable/roles/custom-role/tasks/main.yml

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+---
+var_file_variable: "Hello, world in main var.yml!"

ansible-environment-variable/roles/custom-role/vars/main.yml

@@ -14,4 +14,9 @@ ansible-playbook --inventory inventory/ansible-variable-playbook/hosts ansible-v
 
 ```bash
 ansible-playbook --inventory inventory/ansible-variable-playbook/hosts ansible-variables-playbook.yml --extra-vars "@my-vars.yml"
+```
+
+```bash
+ansible-playbook playbook.yml 
+--extra-vars '{"version":"1.0"}' 
 ```

ansible-variables/README.md

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   vars:
     # 1. String Variable
-    main_playbook_variable: "Hello, world in main playbook!"
+    main_playbook_variable: "foo"
 
     # 2. Boolean Variable
     is_enabled: false