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