Activity 2: Lets install jdk 11 on Redhat 8 machine

• Lets find the manual steps to install openjdk 11 on RedHat 8 Refer Here for documentation to install openjdk 11
• Create a Redhat 8 virtual machine (in any cloud or hypervisor of your choice)
  
• We have verified that the manual steps are working

sudo yum install java-11-openjdk -y

• For the module for yum Refer Here
• In our lab setup we dont have a redhat 8 node, so lets add the redhat8 node as node2
  
  
  
  
• Now we need to copy the key from ansible control node to node2
  
• Refer Here for the changes made
• Now execute the playbook
  
• For installing java on two distributions of linux, we have used two seperate playbooks and two seperate inventory files which is not a good idea.
• So as approach 1, lets try to write both the tasks in the same file
• When we execute the ansible playbook, we have observed one extra step running Gathering facts.
• Ansible facts are data related to the remote node which include os, ip addresses, memory, network and many work…. Refer Here
• The module in ansible which can collect information about the node is setup Refer Here.
• Lets run some adhoc commands to fetch information
  • ubuntu instance (node1):
    
    
  • redhat instance (node2)
    
    
• To to write conditional statements Refer Here
• Refer Here for the changes done and execute the playbook
  
• When executing ansible-playbook we can see the debug/log information by adding -v or -vv or -vvv, -vvvv
• Exercise:
  • Can you make changes in your existing playbook to install node js to work on Redhat 8.