/iac_vagrant_ansible

Ansible exercises for training purposes

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Ansible Exercices Over Vagrant

This is a sample project that shows how to create tree VMs with Vagrant and configurate with Ansible.

Requeriments:

Project tree:

$ tree
.
├── README.rst
├── Vagrantfile
└── playbooks
    ├── ansible.cfg
    ├── demo.out
    └── hosts

1 directory, 5 files

Create VMs with Vagrant based on VagrantFile

$ vagrant up

#Enter to VM
$ vagrant ssh vagrant1

Configure Ansible with Vagrant:

# Export ANSIBLE_CONFIG
$ export ANSIBLE_CONFIG=./playbooks/ansible.cfg

#List all hosts
$ ansible --list-hosts all
hosts (3):
  vagrant2
  vagrant3
  vagrant1

#List hosts by role.
$ ansible --list-hosts webservers
hosts (1):
  vagrant1

$ ansible --list-hosts appservers
hosts (1):
  vagrant2

$ ansible --list-hosts dbservers
hosts (1):
  vagrant3

Excersice 1 - Copy file in all VMs:

$ ansible all -m copy -a "src=./playbooks/demo.out dest=/tmp/demo.out"

#View file on VM.
$ vagrant ssh vagrant1
vagrant@vagrant-ubuntu-trusty-64:~$ cat /tmp/demo.out
DOU Ansible Demo
$ exit
$ vagrant ssh vagrant2
vagrant@vagrant-ubuntu-trusty-64:~$ cat /tmp/demo.out
DOU Ansible Demo
$ exit
$ vagrant ssh vagrant3
vagrant@vagrant-ubuntu-trusty-64:~$ cat /tmp/demo.out
DOU Ansible Demo
$ exit

Excersice 2 - Provision Nginx on webservers

# Install nginx with apt module (Bad state value)
$ ansible webservers -m apt -a "name=nginx state=presetn"
vagrant1 | FAILED! => {
    "changed": false,
    "msg": "value of state must be one of: absent, build-dep, installed, latest, present, removed, present, got: presetn"
}

# Instal nginx with api module
$ ansible webservers -m apt -b -a "name=nginx state=present"

vagrant1 | SUCCESS => {
"cache_update_time": 1537220692,
"cache_updated": false,
"changed": true,
"stderr": "",
"stderr_lines": [],
"stdout": "Reading package lists...\nBuilding dependency tree...\nReading state information...\nThe following extra packages will be installed:\n  libxslt1.1 nginx-common nginx-core\nSuggested packages:\n  fcgiwrap nginx-doc\nThe following NEW packages will be installed:\n  libxslt1.1 nginx nginx-common nginx-core\n0 upgraded, 4 newly installed, 0 to remove and 0 not upgraded.\nNeed to get 495 kB of archives.\nAfterthis operation, 1802 kB of additional disk space will be used.\nGet:1 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libxslt1.1 amd64 1.1.28-2ubuntu0.1 [145 kB]\nGet:2 http://archive.ubuntu.com/ubuntu/ trusty-updates/main nginx-common all 1.4.6-1ubuntu3.8 [19.1 kB]\nGet:3 http://archive.ubuntu.com/ubuntu/ trusty-updates/main nginx-core amd64 1.4.6-1ubuntu3.8 [325 kB]\nGet:4 http://archive.ubuntu.com/ubuntu/ trusty-updates/main nginx all 1.4.6-1ubuntu3.8 [5394 B]\nPreconfiguring packages ...\nFetched 495 kB in 4s (110kB/s)\nSelecting previously unselected package libxslt1.1:amd64.\n(Reading database ... 63126 files and directories currently installed.)\nPreparing to unpack .../libxslt1.1_1.1.28-2ubuntu0.1_amd64.deb ...\nUnpacking libxslt1.1:amd64 (1.1.28-2ubuntu0.1) ...\nSelecting previously unselected package nginx-common.\nPreparing to unpack .../nginx-common_1.4.6-1ubuntu3.8_all.deb ...\nUnpacking nginx-common (1.4.6-1ubuntu3.8) ...\nSelecting previously unselected package nginx-core.\nPreparing to unpack .../nginx-core_1.4.6-1ubuntu3.8_amd64.deb ...\nUnpacking nginx-core (1.4.6-1ubuntu3.8) ...\nSelecting previously unselected package nginx.\nPreparing to unpack .../nginx_1.4.6-1ubuntu3.8_all.deb ...\nUnpacking nginx (1.4.6-1ubuntu3.8) ...\nProcessing triggers for ufw (0.34~rc-0ubuntu2) ...\nProcessing triggers for ureadahead (0.100.0-16) ...\nProcessing triggers for man-db (2.6.7.1-1ubuntu1) ...\nSetting up libxslt1.1:amd64 (1.1.28-2ubuntu0.1) ...\nSetting up nginx-common (1.4.6-1ubuntu3.8) ...\nProcessing triggers for ufw (0.34~rc-0ubuntu2) ...\nProcessing triggers for ureadahead (0.100.0-16) ...\nSetting up nginx-core (1.4.6-1ubuntu3.8) ...\nSetting up nginx (1.4.6-1ubuntu3.8) ...\nProcessing triggers for libc-bin (2.19-0ubuntu6.14) ...\n",
"stdout_lines": [
    "Reading package lists...",
    "Building dependency tree...",
    "Reading state information...",
    "The following extra packages will be installed:",
    "  libxslt1.1 nginx-common nginx-core",
    "Suggested packages:",
    "  fcgiwrap nginx-doc",
    "The following NEW packages will be installed:",
    "  libxslt1.1 nginx nginx-common nginx-core",
    "0 upgraded, 4 newly installed, 0 to remove and 0 not upgraded.",
    "Need to get 495 kB of archives.",
    "After this operation, 1802 kB of additional disk space will be used.",
    "Get:1 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libxslt1.1 amd64 1.1.28-2ubuntu0.1 [145 kB]",
    "Get:2 http://archive.ubuntu.com/ubuntu/ trusty-updates/main nginx-common all 1.4.6-1ubuntu3.8 [19.1 kB]",
    "Get:3 http://archive.ubuntu.com/ubuntu/ trusty-updates/main nginx-core amd64 1.4.6-1ubuntu3.8 [325 kB]",
    "Get:4 http://archive.ubuntu.com/ubuntu/ trusty-updates/main nginx all 1.4.6-1ubuntu3.8 [5394 B]",
    "Preconfiguring packages ...",
    "Fetched 495 kB in 4s (110 kB/s)",
    "Selecting previously unselected package libxslt1.1:amd64.",
    "(Reading database ... 63126 files and directories currently installed.)",
    "Preparing to unpack .../libxslt1.1_1.1.28-2ubuntu0.1_amd64.deb ...",
    "Unpacking libxslt1.1:amd64 (1.1.28-2ubuntu0.1) ...",
    "Selecting previously unselected package nginx-common.",
    "Preparing to unpack .../nginx-common_1.4.6-1ubuntu3.8_all.deb ...",
    "Unpacking nginx-common (1.4.6-1ubuntu3.8) ...",
    "Selecting previously unselected package nginx-core.",
    "Preparing to unpack .../nginx-core_1.4.6-1ubuntu3.8_amd64.deb ...",
    "Unpacking nginx-core (1.4.6-1ubuntu3.8) ...",
    "Selecting previously unselected package nginx.",
    "Preparing to unpack .../nginx_1.4.6-1ubuntu3.8_all.deb ...",
    "Unpacking nginx (1.4.6-1ubuntu3.8) ...",
    "Processing triggers for ufw (0.34~rc-0ubuntu2) ...",
    "Processing triggers for ureadahead (0.100.0-16) ...",
    "Processing triggers for man-db (2.6.7.1-1ubuntu1) ...",
    "Setting up libxslt1.1:amd64 (1.1.28-2ubuntu0.1) ...",
    "Setting up nginx-common (1.4.6-1ubuntu3.8) ...",
    "Processing triggers for ufw (0.34~rc-0ubuntu2) ...",
    "Processing triggers for ureadahead (0.100.0-16) ...",
    "Setting up nginx-core (1.4.6-1ubuntu3.8) ...",
    "Setting up nginx (1.4.6-1ubuntu3.8) ...",
    "Processing triggers for libc-bin (2.19-0ubuntu6.14) ..."
    ]
}

#Check if nginx is statarted
$ ansible webservers -m service -b -a "name=nginx state=started"
vagrant1 | SUCCESS => {
    "changed": false,
    "name": "nginx",
    "state": "started"
}

Excersice 3 - Check if Nginx is running on webservers hosts

$ curl http://localhost:8080
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
    body {
        width: 35em;
        margin: 0 auto;
        font-family: Tahoma, Verdana, Arial, sans-serif;
    }
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>

<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>

<p><em>Thank you for using nginx.</em></p>
</body>
</html>

Excersice 4 - Stop Nginx on webservers

$ ansible webservers -m service -b -a "name=nginx state=stopped"
vagrant1 | SUCCESS => {
    "changed": true,
    "name": "nginx",
    "state": "stopped"
}

Excersice 5 - Check if Nignx is stopped

$ curl http://localhost:8080
curl: (56) Recv failure: Connection reset by peer

Excersice 6 - Destroy all

$ vagrant destroy -f
==> vagrant3: Forcing shutdown of VM...
==> vagrant3: Destroying VM and associated drives...
==> vagrant2: Forcing shutdown of VM...
==> vagrant2: Destroying VM and associated drives...
==> vagrant1: Forcing shutdown of VM...
==> vagrant1: Destroying VM and associated drives...