RedHat EX294 Exam - Topic 3 Question 58 Discussion

Actual exam question for RedHat's EX294 exam

Question #: 58
Topic #: 3

[All EX294 Questions]

Generate a hosts file:

* Download an initial template file hosts.j2 from http://classroom.example.com/

hosts.j2 to

/home/admin/ansible/ Complete the template so that it can be used to generate a file

with a

line for each inventory host in the same format as /etc/hosts:

172.25.250.9 workstation.lab.example.com workstation

* Create a playbook called gen_hosts.yml that uses this template to generate the file

/etc/myhosts on hosts in the dev host group.

* When completed, the file /etc/myhosts on hosts in the dev host group should have a

line for

each managed host:

127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4

::1 localhost localhost.localdomain localhost6 localhost6.localdomain6

172.25.250.10 serevra.lab.example.com servera

172.25.250.11 serevrb.lab.example.com serverb

172.25.250.12 serevrc.lab.example.com serverc

172.25.250.13 serevrd.lab.example.com serverd

-----------------------------------------------------------------

while practising you to create these file hear. But in exam have to download as per

questation.

hosts.j2 file consists.

localhost localhost.localdomain localhost4 localhost4.localdomain4

::1

localhost localhost.localdomain localhost6 localhost6.localdomain6

-------------------------------------------------------------------

AExplanation:
Solution as:
# pwd
/home/admin/ansible
# wget http://classroom.example.com/hosts.j2
# vim hosts.j2
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1
localhost localhost.localdomain localhost6 localhost6.localdomain6
{% for host in groups['all'] %}
{{ hostvars[host]['ansible_facts']['default_ipv4']['address'] }} {{ hostvars[host]
['ansible_facts']['fqdn'] }} {{ hostvars[host]['ansible_facts']['hostname'] }}
{% endfor %}
:wq!
# vim gen_hosts.yml
---
- name: collecting all host information
hosts: all
tasks:
- name:
template:
src: hosts.j2
dest: /etc/myhosts
when: inventory_hostname in groups['dev']
:wq
# ansible-playbook gen_hosts.yml ---syntax-check
# ansible-playbook gen_hosts.yml

Show Suggested Answer

Suggested Answer: A

by Jamey at Jan 10, 2025, 09:16 AM

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Louis

5 months ago

This is a great way to automate host file generation!

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Valentin

5 months ago

Totally agree, localhost should be included for local resolution!

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Jamika

6 months ago

Looks straightforward, but why do we need to specify localhost entries?

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Polly

6 months ago

Wait, are we sure the IPs are correct? Seems off to me.

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Xochitl

6 months ago

Just downloaded the hosts.j2 template from the link!

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Dan

6 months ago

I definitely remember the localhost entries, but I’m worried about getting the loop for the hosts right in the template.

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Rebecka

7 months ago

I feel a bit confused about the inventory groups. Do we need to specify the dev group in the playbook?

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Nada

7 months ago

I think we did a similar question where we had to generate a file from a template. I hope I can recall the correct Ansible commands.

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Orville

7 months ago

I remember we practiced creating a hosts file, but I’m not sure if I got the template syntax right for the Jinja2 file.

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Beckie

7 months ago

This seems straightforward enough. I'll start by downloading the template file, then I'll use Jinja2 syntax to loop through the inventory hosts and generate the necessary lines in the file. The playbook part should be pretty simple too, just need to make sure I target the right host group.

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Willie

7 months ago

Okay, I think I've got a good strategy for this. First, I'll download the template file from the URL, then I'll update it to include the necessary variables for the inventory hosts. After that, I'll create the playbook to generate the /etc/myhosts file on the dev hosts. Shouldn't be too difficult as long as I follow the instructions carefully.

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Cory

8 months ago

Hmm, I'm a little confused about the template file. Do we need to download it from the URL first, or can we just create it locally? And what exactly should the contents of the template be?

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Elza

8 months ago

This looks like a pretty straightforward task. I think I can handle generating the hosts file using the provided template and the playbook.

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Jeannine

1 year ago

I bet the website with the hosts.j2 file is hosted on a private server that's only accessible to the exam organizers. Good luck finding that one, folks!

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Marya

11 months ago

Let's hope they provide us with the necessary files during the exam, or else we'll have to think on our feet.

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Billy

11 months ago

Yeah, we might have to come up with a different solution if we can't download the hosts.j2 file.

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Lucia

12 months ago

It's tricky, we'll have to figure out a way to access that file during the exam.

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Fabiola

1 year ago

The playbook looks clean and straightforward. I'm curious to see if it works as expected when we run it against the dev host group.

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Malinda

1 year ago

User 3: Fingers crossed that it generates the file correctly on the dev hosts.

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Eleonore

1 year ago

User 2: I agree, the playbook seems well-structured.

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Nada

1 year ago

User 1: Let's run the playbook and see if it works.

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Tegan

1 year ago

Ha! Looks like the exam wants us to download the hosts.j2 file, but doesn't provide the actual URL. Where's that hidden treasure trove of a website?

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Bette

12 months ago

Got it! I'll follow the steps to generate the hosts file.

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Laurel

12 months ago

Make sure to complete the template and create the playbook as instructed.

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Amie

1 year ago

Oh, thanks for the info! I'll go grab it from there.

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Wynell

1 year ago

You can find the hosts.j2 file at http://classroom.example.com/

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Gaston

1 year ago

I like the use of the Jinja2 template to generate the /etc/myhosts file dynamically based on the inventory. That's a smart approach.

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Dwight

1 year ago

User 2: Definitely, it's a great way to automate the generation of files based on inventory.

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Belen

1 year ago

User 1: I agree, using Jinja2 templates makes the process more efficient.

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Izetta

1 year ago

The solution looks good, but I'm not sure how the hosts.j2 template file is supposed to be downloaded from the classroom.example.com website. Is that part of the exam question?

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