Writing playbook in ansible

Now lets write 1st playbook.
============================

[root@ansimaster ~]# cat apache_playbook.yml
---
- hosts: webservers
  become: true
  become_user: root
  tasks:
  - name: Install httpa package
    yum: name=httpd state=present
  - name: Start appache services
    service: name=httpd state=started
   
[root@ansimaster ~]#

===================================================================
We can check if there is any error in playboot using --sytax-check
===================================================================
[root@ansimaster ~]# ansible-playbook apache_playbook.yml --syntax-check

playbook: apache_playbook.yml
[root@ansimaster ~]#
[root@ansimaster ~]#
[root@ansimaster ~]#
[root@ansimaster ~]#
[root@ansimaster ~]#
[root@ansimaster ~]#
===================================================================
If you want to see on how many hosts this playbook will run
===================================================================
[root@ansimaster ~]# ansible-playbook apache_playbook.yml --list-hosts

playbook: apache_playbook.yml

  play #1 (webservers): webservers      TAGS: []
    pattern: [u'webservers']
    hosts (1):
      192.168.159.142
[root@ansimaster ~]#

===================================================================
Now run your 1st playbook
===================================================================

[root@ansimaster ~]# ansible-playbook apache_playbook.yml

PLAY [webservers] **********************************************************************************************************************

TASK [Gathering Facts] *****************************************************************************************************************
ok: [192.168.159.142]

TASK [Install httpa package] ***********************************************************************************************************
changed: [192.168.159.142]

TASK [Start appache services] **********************************************************************************************************
changed: [192.168.159.142]

PLAY RECAP *****************************************************************************************************************************
192.168.159.142            : ok=3    changed=2    unreachable=0    failed=0

[root@ansimaster ~]#


****  Now go to the client and check httd package should be installed and services should be running *****

[root@web1 ~]# yum list httpd
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
 * base: centos.mirrors.estointernet.in
 * epel: repos.del.extreme-ix.org
 * extras: repos.del.extreme-ix.org
 * updates: repos.del.extreme-ix.org
Installed Packages
httpd.x86_64                                                2.4.6-89.el7.centos                                                 @updates
[root@web1 ~]#
[root@web1 ~]# systemctl status httpd
● httpd.service - The Apache HTTP Server
   Loaded: loaded (/usr/lib/systemd/system/httpd.service; disabled; vendor preset: disabled)
   Active: active (running) since Sat 2019-05-04 10:43:22 EDT; 29s ago
     Docs: man:httpd(8)
           man:apachectl(8)
 Main PID: 14664 (httpd)
   Status: "Total requests: 0; Current requests/sec: 0; Current traffic:   0 B/sec"
   CGroup: /system.slice/httpd.service
           ├─14664 /usr/sbin/httpd -DFOREGROUND
           ├─14667 /usr/sbin/httpd -DFOREGROUND
           ├─14668 /usr/sbin/httpd -DFOREGROUND
           ├─14669 /usr/sbin/httpd -DFOREGROUND
           ├─14670 /usr/sbin/httpd -DFOREGROUND
           └─14671 /usr/sbin/httpd -DFOREGROUND

May 04 10:43:21 web1 systemd[1]: Starting The Apache HTTP Server...
May 04 10:43:22 web1 httpd[14664]: AH00558: httpd: Could not reliably determine the server's fully qualified domain name, usi... message
May 04 10:43:22 web1 systemd[1]: Started The Apache HTTP Server.
Hint: Some lines were ellipsized, use -l to show in full.
[root@web1 ~]#