Red Hat EX447 Online Practice Questions and Exam Preparation

Red Hat EX447 Online Questions & Answers

• Question 1:

  CORRECT TEXT

  Create a playbook calledtimesvnc.yml in /home/sandy/ansible using rhel system role timesync. Set the time to use currently configured nip with the server 0.uk.pool.ntp.org. Enable burst. Do this on all hosts.

  See the for complete Solution below.

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  explanation:

  Solution as:

  

• Question 2:

  CORRECT TEXT

  Using the Simulation Program, perform the following tasks:

  Static Inventories Task:

  1.

  Add a new group to your default ansible host file. call the group [ec2]

  2.

  Add a newhost to the new group you created.

  3.

  Add a variable to a new host entry in the /etc/ansible/hosts file. Add the following. localhost http_port=80 maxRequestsPerChild=808

  4.

  Check to see if maxRequestsPerChild is pulled out with an ad-hoccommand.

  5.

  Create a local host file and put a target group and then a host into it. Then ping it with an ad-hoc command.

  See the for complete Solution below.

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  explanation:

  1.

  Edit the /etc/ansible/hosts file. Add a group.

  2.

  Edit the /etc/ansible/hosts file. Add a user under the group you created.

  3.

  Edit the /etc/ansible/hosts file. Find a host. if we add a variable called maxRequestsPerChild to the host it would look like this. host1 maxRequestsPerChild=808

  4.

  ansible ec2 -m shell -a "echo {{ maxRequestsPerChild }}"

  5.

  Edit a local file. It could be called anything. Lets call it myhosts. Inside the file it would have a host like the following. [mygroup] myusername1.mylabserver.com

• Question 3:

  CORRECT TEXT

  Using the Simulation Program,perform the following tasks:

  1.

  Use an ansible ad-hoc command, check the connectivity of your servers.

  2.

  Use an ad-hoc ansible command, find the free space of your servers.

  3.

  Use an ad-hoc ansible command, find out the memory usage of your servers.

  4.

  Do an ls -l on the targets /var/log/messages file.

  5.

  Tail the contents of the targets /var/log/messages file.

  See the for complete Solution below.

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  explanation:

  1.

  ansible all -m ping

  2.

  ansible all -a "/bin/df -h"

  3.

  ansible all-a "/usr/bin/free"

  4.

  ansible all -a "ls -l /var/log/messages"

  5.

  ansible local -b -a "tail /var/log/messages"

• Question 4:

  CORRECT TEXT

  Install and configure ansible

  User sandy has been created on your control node with the appropriate permissions already, do not change or modify ssh keys. Install the necessary packages to run ansible on the control node. Configure ansible.cfg to be in folder /home/ sandy/ansible/ansible.cfg and configure to access remote machines via the sandy user. All roles should be in the path /home/sandy/ansible/roles. The inventory path should be in /home/sandy/ansible/invenlory.

  You will have access to 5 nodes. node1.example.com

  node2.example.com

  node3.example.com

  node4.example.com

  node5.example.com

  Configure these nodes to be in an inventory file where node I is a member of group dev. nodc2 is a member of group test, node3 is a member of group proxy, nodc4 and node 5 are members of group prod. Also, prod is a member of group webservers.

  See the for complete Solution below.

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  explanation:

  In/home/sandy/ansible/ansible.cfg [defaults] inventory=/home/sandy/ansible/inventory roles_path=/home/sandy/ansible/roles remote_user= sandy host_key_checking=false [privilegeescalation] become=true become_user=root become_method=sudo become_ask_pass=false

  In /home/sandy/ansible/inventory [dev] node1 .example.com [test] node2.example.com [proxy] node3 .example.com [prod] node4.example.com node5 .example.com [webservers:children] prod

• Question 5:

  CORRECT TEXT

  In /home/sandy/ansible/create a playbook calledlogvol.yml. Inthe play create a logical volume calledIv0and make it of size 1500MiB on volume groupvgOIf there is not enough space in the volume groupprinta message"Not enough space for logical volume"and then make a 800MiBIv0instead. If the volume group still doesn't exist, create a message "Volume group doesn't exist"Create anxfsfilesystem on allIv0logical volumes. Don't mount the logical volume.

  See the for complete Solution below.

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  explanation:

  Solution as:

  

• Question 6:

  CORRECT TEXT

  Create a file in/home/sandy/ansible/calledreport.yml.Using this playbook, get a filecalled report.txt(make it look exactly as below). Copy this file over to all remote hosts at /root/report.txt.Then edit the lines in the file to provide the real informationofthehosts. Ifa disk does not exist then write NONE.

  

  See the for complete Solution below.

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  explanation:

  Solution as:

  

  

• Question 7:

  CORRECT TEXT

  Create a playbookthatchanges the default target onallnodes tomulti-usertarqet. Do this in playbook file called target.yml in /home/sandy/ansible

  See the for complete Solution below.

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  explanation:

  -

  name: change default target

  hosts: all

  tasks:

  -

  name: change target

  file:

  src:/usr/lib/systemd/system/multi-user.target dest: /etc/systemd/system/default.target state:

  link

• Question 8:

  CORRECT TEXT

  Using the Simulation Program, perform the following tasks:

  Ad-Hoc Ansible Commands (Number Two) Task:

  1.Use the ad-hoc command to make sure php is installed.

  2.

  Use the ad-hoc command to make sure that php is installed and is the latest version.

  3.

  Use the ad-hoc command to make sure that httpd is installed.

  4.

  Use the ad-hoc command to remove httpd fromthe servers.

  See the for complete Solution below.

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  explanation:

  1.

  ansible all -b -m yum -a 'name=php state=present'

  2.

  ansible all -b -m yum -a 'name=php state=latest'

  3.

  ansible all -b -m yum -a 'name=httpd state=latest'

  4.

  ansibleall -b -m yum -a 'name=httpd state=absent'

• Question 9:

  CORRECT TEXT

  Create a playbook called issue.yml in /home/sandy/ansible which changes the file /etc/issue on all managed nodes: If host is a member of (lev then write "Development" If host is a member oftestthen write "Test" If host is a member ofprodthen write "Production"

  See the for complete Solution below.

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  explanation:

  Solution as:

  

• Question 10:

  CORRECT TEXT

  Create a role called sample-apache and store it in /home/bob/ansible/roles. The role should

  satisfy the following requirements:

  In the role, install and enable httpd. Also enable the firewall to allow http. Also run the template

  index.html.j2 and make sure this runs Create a template index.html.j2that displays "Welcome to the server HOSTNAME"

  In a play called apache.yml in /home/bob/ansible/ run the sample-apache role.

  See the for complete Solution below.

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  explanation:

  /home/sandy/ansible/apache.yml

  

  /home/sandy/ansible/roles/sample-apache/tasks/main.yml

  

  /home/sandy/ansible/roles/sample-apache/templates/index.html.j2

  

  In /home/sandy/ansible/roles/sample-apache/handlers/main.yml