DevOps Classroom Series – 06/Jun/2021

Tomcat 9 with open JDK 8 using Chef

• Manual Steps are

1.  sudo apt update
2.  sudo apt-cache search openjdk
3.  sudo apt install openjdk-8-jdk -y
4.  java -version
5.  sudo groupadd tomcat
6.  sudo useradd -s /bin/false -g tomcat -d /opt/tomcat tomcat
7.  cd /tmp/
8.  wget https://mirrors.estointernet.in/apache/tomcat/tomcat-9/v9.0.46/bin/apache-tomcat-9.0.46.tar.gz
9.  sudo mkdir /opt/tomcat
10.  sudo tar xzvf apache-tomcat-*tar.gz -C /opt/tomcat --strip-components=1
11.  cd /opt/tomcat
12.  sudo chgrp -R tomcat /opt/tomcat
13.  sudo chmod -R g+r conf
14.  sudo chmod g+x conf
15.  sudo chown -R tomcat webapps/ work/ temp/ logs/
16.  sudo nano /etc/systemd/system/tomcat.service
17.  sudo systemctl daemon-reload
18.  sudo systemctl start tomcat
19.  sudo systemctl status tomcat

• In chef we can make a resource execute as an event

  • notifies
  • subscribes

• Refer Here for the changes made in the cookbook to make it work for both ubuntu and redhat flavours to install tomcat 9 with jdk 8

• Refer Here to view the changes to deploy a war file to tomcat server.

Exercises

• Deploy an asp.net core application on ubuntu Linux using chef
  • Refer Here
• Deploy a spring boot application to ubuntu Linux using chef
• Approach:
  • Execute the manual steps
  • Ensure manual steps are working
  • Start writing the cookbook step by step and checking with test kitchen at every step.