Activity 5: Install tomcat 10 server contd
- Refer Here for manual steps
- Refer Here for the changes done to configure manager and host manager app
Tags in ansible
- Refer Here for tags
- Lets add the tags to the tomcat playbook Refer Here for the changes done to add tags
- The purpose of tags is run specific tasks or skip specific tasks
# runs only tasks with tag java
ansible-playbook -i hosts -t java tomcat.yaml
# run every thing but skips tag java
ansible-playbook -i hosts --skip-tags java tomcat.yaml
Re-usablity in Ansible
- Using Ansible we can reuse the playbooks in 3 ways
- import or include playbooks
- roles
- collections
Import or include playbooks
- Refer Here for two simple playbooks first and second which print message
- Now we want to execute both first and second
- import playbook Refer Here
- Refer Here for changes
- the above approach brings reusability but the hosts and other factors are set in the individual playbooks
- Refer Here for an approach where we have used import tasks
- We can acheive the same by using include tasks Refer Here
- Difference between include_ and import_ in ansible
- include is dynamic i.e. we have flexibility fo using include tasks conditionally
- import is static i.e. we need to execute this unconditionally
Ansible Roles
- Ansible role helps in creating reusability Refer Here
- Refer Here for role skelton
- There are lot of reusable roles created by Ansible community Refer Here
- Refer Here for the role for tomcat 10
Ansible Collections
- Refer Here for docs
Exercise
- Try this role and check if we can install mysql
