Part 2 - Section 3 and further

Question 1

Create a playbook to ping your localhost

Answer 1

vi first.yml

”—”
- name
hosts: localhost
tasks:
- name: “test connectivity
ping:

Question 2

Check the syntax of your playbook

Run your playbook without affecting anything

Answer 2

ansible-playbook –syntax-check first.yml

dry run - runs like it would normally but won’t affect anything
ansible-playbook –check first.yml

Question 3

Create playbook that outputs “Hello World” on localhost

Answer 3

vi heloworld.yml

• name: My Second Playbook
  hosts: localhost
  tasks:
  
  • name: Print Hello World
    debug: msg=”Hello World”

ansible-playbook helloworld.yml

Question 4

Create a playbook that pings the local host and also prints “Hello World”

Answer 4

vi mtask.yml
“—”
- name: Running Two Tasks
hosts: localhost
tasks:
- name: Test Connectivity
ping:

- name: Print Hello World
  debug: msg="Hello World" "..." ansible-playbook mtask.yml

Question 5

Install a package and start it via playbook

Answer 5

• name Install HTTPD
  hosts: localhost
  tasks:
  
  • name: Install Apache
    yum:
    name: httpd
    state: present
  • name: Start Httpd
    service:
    name: httpd
    state: started

Question 6

Create a webservers group of clients in your hosts file for 192.168.10.12
192.168.10.15-22

How would you specify a different hosts file in a different location using ansible-playbook

Answer 6

[webservers]
192.168.10.12
192.168.10.[15:22]

ansible-playbook -i /home/me/hosts

If you have hosts in another directory, in your playbook just list it as the name of the inventory. When referencing with “-i” put the complete path.

Question 7

If you don’t have a fqdn for your clients that you want in a hostfile, how can you setup an Alias for them?

Answer 7

[servers]
server1 ansible_ssh_host=192.168.10.142

Question 8

What’s the difference between static and dynamic hosts in a config file

Answer 8

dynamic - dhcp clients

Question 9

Run a command to see what’s in your hostfile

Answer 9

ansible-inventory –list

Question 10

Establish a connection to remote clients
ping all clients with ansible
Show all their uptime

Answer 10

in hosts
[webservers]
192.168.10.142

ansible-inventory –list

ssh-keygen
ssh-copy-id 192.168.10.142

ansible all -m ping

ansible -a “uptime” all

a = arguments

Question 11

Check remote client connectivity for all inventory via a playbook

Basically just ping everything in your hosts file

Answer 11

vi clientstatus.yml

-name: “Connectivity check”
hosts: all
tasks:
- name: Test Connectivity
ping:

ansible-playbook clientstatus.yml

Question 12

Copy a file over to multiple clients via a playbook
The file should be owned by the delsinm user and group. Permissions should be 0644

Answer 12

echo “data” > some.cfg
vi copy.yml

• name Copy
  hosts: all
  tasks:
  
  • name: copy
    become: True
    copy:
    src: /home/delsinm/some.cfg
    dest: /tmp
    owner: delsinm
    group: delsinm
    mode: 0644

become: True - run this as any user
owner: who will the owner be of the file

Question 13

Change the file permissions of a file via playbook

Answer 13

From any client
touch /home/delsinm/linux2

vi filepermissions.yml
- name: Change file permissions
hosts: all
tasks:
- name: change file permissions
file:
path: /home/delsinm/linux2
mode: a+w (do this or octal)

Question 14

Check file/directory status

Answer 14

vi checkFS.yml
- name FS checks
hosts: localhost
tasks:
- name: Check file status and attributes
stat:
path: /etc/hosts
register: fs

- name: Show result
  debug:
    msg: File attributes {{ fs }}

register - container to put output in, you can call is whatever you want

msg - This is just what will display on your output

Question 15

Create and remove a directory and add a file to it. Give it permissions and an owning user and group.
Stat the file - check if the file was created

Answer 15

vi crfile.yml
- name: Create and remove file
hosts: all
tasks:
- name: Create a directory
file:
path: /tmp/seinfeld
owner: delsinm
group: delsinm
mode: 0770
state: directory

 - name: create a file
    file: /tmp/seinfeld/jerry
    state: touch
 
 - name:  stat new file
   stat:
     path: /tmp /seinfeld/jerry
     registry: jf

 - name: Show file status
  debug: 
      msg: File status and attributes {{ jf }}

 - name: Remove file
  file: 
    path: /tmp/seinfeld/jerry
    state: absent
			
		- name: Remove directory
		  file: 
			  path: /tmp/seinfeld
				state: absent
			become: true

The msg here will display on the command line

Question 16

Create a file and add text to it.

Answer 16

vi addtext.yml
- name: Create a file and add text
hosts: localhost
tasks:
- name: Create a file
file:
path: /home/delsinm/file1.txt
state: touch

• name: Add text
  blockinfile:
  path: /home/delsinm/file1.txt
  block: George is on of the main Characters of the Seinfeld show and he is Jerry’s best friend.

If you want it indented the same way you type, do this

block: |
this that
and the
other

Question 17

Via playbook:
Install httpd
start httpd
open the port in firewall
restart firewalld

install the posix collection

Answer 17

ansible-galaxy collection install ansible.posix

• name: setup httpd and open firewall port
  hosts: all
  tasks:
  
  • name: install httpd
    yum:
    name: httpd
    state: present
  • name: start httpd
    service:
    name: httpd
    state: started
  • name: open port 80
    firewalld:
    service: http
    permanent: True
    state: enabled
  • name: Restart firewalld
    service:
    name: firewalld
    state: reload

permanent - enabled after system reboot