Ansible Contd…
Ansible loops and variables in inventory
- we are supposed to install the following softwares into a node
- git
- tree
- nano
- net-tools
- Adding lists to ini inventory formats and executing playbook
- inventory
[local]
localhost packages='["git", "nano", "tree", "net-tools"]'
- playbook
---
- name: install utilities
hosts: all
tasks:
- name: install utilities
ansible.builtin.package:
name: "{{ item }}"
state: present
become: yes
loop: "{{ packages }}"
- lets try writing the inventory in yaml. Refer Here for the changes
- inventory in ini file
[appservers]
20.121.55.193 java_package_name=java-11-openjdk-devel
172.31.24.180 java_package_name=openjdk-11-jdk
[appservers:vars]
user_name=tomcat
group_name=tomcat
user_home=/opt/tomcat
user_shell=/bin/false
tomcat_version="10.1.4"
tomcat_major_version="10"
tomcat_service_name=tomcat.service
- same inventory in yaml file
---
all:
children:
appservers:
hosts:
20.121.55.193:
java_package_name: java-11-openjdk-devel
172.31.24.180:
java_package_name: openjdk-11-jdk
vars:
user_name: tomcat
group_name: tomcat
user_home: /opt/tomcat
user_shell: /bin/false
tomcat_version: "10.1.4"
tomcat_major_version: "10"
tomcat_service_name: tomcat.service
- It is not a good idea to define variables in inventory, variables should be treated seperately. Optimizing inventory Refer Here and Refer Here for organizing group and host variables.
- Refer Here for the changes done and screen shot below for output
Ansible Special Variables
- ansible while executing has lot of special variables defined by ansible Refer Here
- after fixing packages Refer Here
