Lab 4 - Tasks

Mandatory

Create a YAML List

• create an empty file and save it as lab4.yml

• edit the file and define a YAML list named ntp_servers and add this items:

  • 0.ch.pool.ntp.org
  • 1.ch.pool.ntp.org
  • 2.ch.pool.ntp.org
  • 3.ch.pool.ntp.org

Create a YAML dictionary

• add a dictionary named ntp_settings with these key/values

  • driftfile -> /var/lib/ntp/ntp.drift
  • restrict -> 127.0.0.1
  • statistics -> loopstats peerstats clockstats

Run some ad-hoc tasks

• Install telnet via yum module on web2.<firstname>.lab
• Run the installation again
• Remove the package telnet via yum module on web2.<firstname>.lab
• Run the deinstallation again

Install tree

• Install tree via apt module on web1.<firstname>.lab

Create your first YAML task

• Create a task in YAML style for a ntp installation via apt. Save the tasks also in the file lab4.yml

  • state -> latest

Optional

Expand your dictionary

• Replace the string restrict with a list and add these items:

  • 127.0.0.1
  • ::1

• save the content in a file

Install a specific version of a package

• Install httpd version 2.4.6-88.el7.centos via yum module on web2.<firstname>.lab

Hint

state=latest is not the solution.