Prerequizites

1. Log in to VM as devops user and run Terminal (Applications - System Tools - Terminal)

Tasks

1. YUM package management

• Tomcat installation

  • install Tomcat application server: sudo yum install tomcat tomcat-webapps
  • inspect which packets were installed, where were they installed from
  • run tomcat service: sudo systemctl start tomcat.service
  • now enter in your browser http://localhost:8080 and you'll tomcat home page.

• repository installation

  • check list of installed repositories
  • install EPEL (epel-release) repository
  • check list of installed repositories again. Are there a new entries?

• Nginx installation

  • install Nginx web server without install confirmation
  • now you can run nginx.service and see homepage http://localhost

• uninstalling

  • stop both services (tomcat and nginx) and remove them with one line and without confirmation

• package searching

  • look for which package contains ifconfig tool (tips: yum provides)

• update your system

• show duplicates of tomcat web server

• install the earliest version of tomcat (etc. tomcat-7.0.76-7.el7_5)

2. RPM package management

• check of installed packages via rpm -qa. Count them and remember their quantity.
• download appropriate rpm package of httpd web server, install it via rpm -ivh and run httpd service
• check count of installed packages again and compare with previous number. How many packages were installed?
• look for the paths of all httpd files
• remove installed httpd web server with rpm

Helpful Materials

• https://www.youtube.com/watch?v=WU-MoPJsK9U&list=PLD_mb6U5Xp95cX_CDO3Cg-p8370lPwRR2&index=45
• https://www.youtube.com/watch?v=kQ59WV9lJU8&list=PLD_mb6U5Xp95cX_CDO3Cg-p8370lPwRR2&index=46
• https://www.youtube.com/watch?v=O2kKklCnD9Q&list=PLD_mb6U5Xp95cX_CDO3Cg-p8370lPwRR2&index=47
• https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/system_administrators_guide/sec-working_with_packages