RHCE 8/EX294 Exam Practice Question 2 (Using Ansible ad hoc Command)

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RHCE 8 EX294 exam practice question 2

Question

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Because you will have to install software on the managed hosts, you need to do the following:
*Create a shell script with the name packages.sh that runs an Ansible ad-hoc command to create a yum repository on all managed hosts using the information as below:

-The Appstream base URL and BaseOS URL are “http://hqdev1.tekneed.com/rpm/AppStream” and “http://hqdev1.tekneed.com/rpm/BaseOS”

-The Appstream and BaseOS description are “RHEL 8 Appstream” and “RHEL 8 BaseOS”

-The Appstream and BaseOS names are “RHEL_Appstream” “RHEL_BaseOS”

-The repositories must be enabled with a gpgkey of http://hqdev1.tekneed.com/rpm/RPM-GPG-KEY-redhat-release

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This question is based on understanding and using the Ansible ad hoc command in the RHCE 8/EX294 course on this website. If you have gone through this course, solving this wouldn’t be a problem.

RHCE/EX294 Course

Understanding and using the ansible ad hoc command

Answer

1. Create the packages.sh file, and use the yum_repository module.

[lisa@drdev1 ~]$ vim /home/lisa/ansible/packages.sh

#!/bin/bash

ansible all -m yum_repository -a 'baseurl=http://hqdev1.tekneed.com/rpm/AppStream description="RHEL 8 Appstream" name=RHEL_Appstream enabled=1 gpgcheck=1 gpgkey=http://hqdev1.tekneed.com/rpm/RPM-GPG-KEY-redhat-release file=rhel'
ansible all -m yum_repository -a 'baseurl=http://hqdev1.tekneed.com/rpm/BaseOS description="RHEL 8 BaseOS" name=RHEL_BaseOS enabled=1 gpgcheck=1 gpgkey=http://hqdev1.tekneed.com/rpm/RPM-GPG-KEY-redhat-release file=rhel'

2. Make the file executable

[lisa@drdev1 ~]$ chmod 667 /home/lisa/ansible/packages.sh

3. Verify that the file is executable.

[lisa@drdev1 ~]$ ls -l /home/lisa/ansible/packages.sh

-rw-rw-rwx. 1 lisa lisa 438 Jun 16 11:14 /home/lisa/ansible/packages.sh

4. Run the script.

[lisa@drdev1 ~]$ cd /home/lisa/ansible/

[lisa@drdev1 ansible]$ sudo ./packages.sh

.............
hqdev1.tekneed.com | CHANGED => {
    "ansible_facts": {
        "discovered_interpreter_python": "/usr/libexec/platform-python"
    },
    "changed": true,
    "repo": "RHEL_BaseOS",
    "state": "present"
..............

5. Verify your configuration

*since hqdev1.tekneed.com is among the managed hosts, one can use the ansible adhoc command to verify that the yum repository file was created on the host.

[lisa@drdev1 ansible]$ ansible hqdev1.tekneed.com -a 'cat /etc/yum.repos.d/rhel.repo'

hqdev1.tekneed.com | CHANGED | rc=0 >>
[RHEL_Appstream]
baseurl = http://hqdev1.tekneed.com/rpm/AppStream
enabled = 1
gpgcheck = 1
gpgkey = http://hqdev1.tekneed.com/rpm/RPM-GPG-KEY-redhat-release
name = RHEL 8 Appstream

[RHEL_BaseOS]
baseurl = http://hqdev1.tekneed.com/rpm/BaseOS
enabled = 1
gpgcheck = 1
gpgkey = http://hqdev1.tekneed.com/rpm/RPM-GPG-KEY-redhat-release
name = RHEL 8 BaseOS

NOTE

If gpgkeys are not given in the question, the packages.sh script will be written as below.

#!/bin/bash

ansible all -m yum_repository -a 'baseurl=http://hqdev1.tekneed.com/rpm/AppStream description="RHEL 8 Appstream" name=RHEL_Appstream enabled=1 gpgkey=0 file=rhel'
ansible all -m yum_repository -a 'baseurl=http://hqdev1.tekneed.com/rpm/BaseOS description="RHEL 8 BaseOS" name=RHEL_BaseOS enabled=1 gpgkey=0 file=rhel'

The script can also be written as below;

#!/bin/bash

ansible all -m yum_repository -a 'baseurl=http://hqdev1.tekneed.com/rpm/AppStream description="RHEL 8 Appstream" name=RHEL_Appstream enabled=1 gpgcheck=1 gpgkey=http://hqdev1.tekneed.com/rpm/RPM-GPG-KEY-redhat-release file=rhel'
ansible all -m yum_repository -a 'baseurl=http://hqdev1.tekneed.com/rpm/BaseOS description="RHEL 8 BaseOS" name=RHEL_BaseOS enabled=1 gpgcheck=1 gpgkey=http://hqdev1.tekneed.com/rpm/RPM-GPG-KEY-redhat-release file=rhel'
ansible all -m rpm_key -a 'key=http://hqdev1.tekneed.com/rpm/RPM-GPG-KEY-redhat-release stat
e=present'

Solution Summary

vim /home/lisa/ansible/packages.sh

chmod 667 /home/lisa/ansible/packages.sh

cd /home/lisa/ansible

./packages.sh

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