DevOps Classroom notes 28/Feb/2024

Activity 4: Installing tomcat on ubuntu

• Refer Here for manual steps

sudo apt update
sudo apt install openjdk-11-jdk -y
sudo useradd -r -m -U -d /opt/tomcat -s /bin/false tomcat
cd /tmp/
wget https://archive.apache.org/dist/tomcat/tomcat-10/v10.0.10/bin/apache-tomcat-10.0.10.tar.gz

• The command sudo useradd -r -m -U -d /opt/tomcat -s /bin/false tomcat means create a user tomcat with
  • home directory in /opt/tomcat
  • tomcat as a system user
  • ensure there is group called as tomcat
  • shell is /bin/false
• Refer Here for the playbook to automate the above steps and execute the playbook
  
• Refer Here for debug messages added.
  
• Next set of steps

sudo tar xzf apache-tomcat-*.tar.gz -C /opt/tomcat 

• Refer Here for the changes done to extract tomcat and Refer Here for the remote src to yes for downloading from external sources

Exercise:

• Make changes in the above playbook to work on centos 8
• Ensure /opt/tomcat/apache-tomcat-10.0.10 has tomcat user and tomcat group as owner.

References

• Understanding previlege escalation i.e. using become Refer Here
• printing messages during execution of playbook is considered to be a good ractice. we can use debug module Refer Here