Ansible Exercices Over Vagrant
This is a sample project that shows how to create tree VMs with Vagrant and configurate with Ansible.
Requeriments:
- Vagrant https://www.vagrantup.com/downloads.html
- Ansible https://docs.ansible.com/ansible/latest/installation_guide/intro_installation.html
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...