To prepare a sample lab environment for testing Ansible , you can use Vagrant to create an environment with 3 nodes as follows:
lab-ans-control : 192.168.4.200 control.example.com
lab-ans-ansible1: 192.168.4.201 ansible1.example.com
lab-ans-ansible2: 192.168.4.202 ansible2.example.comNOTE
- The environment is not secure and it is only for testing Ansible.
- All passwords of ansible users are ansible.
- The vagrant user is sudoer on all nodces.
- The ansible user is sudoer in all of nodes.
- In the home of ansible user on lab-ans-control, the sandervanvugt/rhce8-live repository is already checked out here:
/home/_ansible_/rhce8-live.
Steps to prepare the environment on your host Linux:
- Install VirtualBox© based on your Linux distribution from here
- Install Vagrant© based on your Linux distribution from here
- Install git
- Running the Vagrant environment on your host Linux:
-
To check, if VirtualBox is installed correct
$ vboxmanage --version 5.2.36r135684 # Without any Error -
To check, if Vagrant is installed correct
$ vagrant --version Vagrant 2.x.x # Without any Error -
Clone repository of the course into your existing path like /path/to/repos
$ git clone https://github.com/sandervanvugt/rhce8-live.git /path/to/repos/rhce8-live $ cd /path/to/repos/rhce8-live/ansible-lab -
Check the validity of Vagrantfile with your installed version
$ vagrant validate Vagrantfile validated successfully.
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Start Vagrant
$ vagrant up --provider=virtualbox # It can take a long time depending on the speed of your PC and internet access. # You should see a lot of log for each node.
-
Vagrant Status
$ vagrant status Current machine states: lab-ans-ansible1 running (virtualbox) lab-ans-ansible2 running (virtualbox) lab-ans-control running (virtualbox)
-
Access to Vagrant Nodes via SSH:
$ vagrant ssh lab-ans-control Last login: Mon Jan 20 11:26:32 2020 from 10.0.2.2 [vagrant@control ~]$ su - ansible Password: ansible Last login: Mon Jan 20 11:26:41 UTC 2020 on pts/0 # Check the access to managed node 1 [ansible@control ~]$ ssh ansible1.example.com Last login: Mon Jan 20 11:26:52 2020 from 192.168.4.200 [ansible@ansible1 ~]$ logout Connection to ansible1.example.com closed. # Check the access to managed node 2 [ansible@control ~]$ ssh ansible2.example.com Last login: Mon Jan 20 11:26:57 2020 from 192.168.4.200 [ansible@ansible2 ~]$ logout Connection to ansible2.example.com closed.
$ vagrant ssh lab-ans-ansible1
$ vagrant ssh lab-ans-ansible2
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Access to all created nodes via GUI of VirtualBox is possible, more info here
$ vagrant ssh lab-ans-control [vagrant@control ~]$ sudo su - ansible Last login: Mon Jan 20 12:33:58 UTC 2020 [ansible@control ~]$ ll total 0 drwxrwxr-x. 14 ansible ansible 244 Jan 20 12:34 rhce8-live [ansible@control ~]$ ll rhce8-live/ total 20 -rwxrwxr-x. 1 ansible ansible 151 Jan 20 12:34 countdown drwxrwxr-x. 4 ansible ansible 212 Jan 20 12:34 lesson11 drwxrwxr-x. 3 ansible ansible 156 Jan 20 12:34 lesson12 drwxrwxr-x. 3 ansible ansible 119 Jan 20 12:34 lesson13 drwxrwxr-x. 3 ansible ansible 271 Jan 20 12:34 lesson15 drwxrwxr-x. 7 ansible ansible 4096 Jan 20 12:34 lesson16 drwxrwxr-x. 2 ansible ansible 102 Jan 20 12:34 lesson2 drwxrwxr-x. 2 ansible ansible 181 Jan 20 12:34 lesson4 drwxrwxr-x. 4 ansible ansible 90 Jan 20 12:34 lesson5 drwxrwxr-x. 4 ansible ansible 32 Jan 20 12:34 lesson7 drwxrwxr-x. 2 ansible ansible 4096 Jan 20 12:34 lesson8 drwxrwxr-x. 3 ansible ansible 194 Jan 20 12:34 lesson9 -rw-rw-r--. 1 ansible ansible 13 Jan 20 12:34 README.md -rw-rw-r--. 1 ansible ansible 457 Jan 20 12:34 setup_repo.yml
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To stop the nodes of Vagrant
vagrant halt -
To delete the nodes of Vagrant
vagrant destroy -
Running a sample playbook rhce8-live/lesson4/install-httpd.yml :
- The sample on the control node:
vagrant ssh lab-ans-control [vagrant@control ~]$ sudo su - ansible Last login: Mon Jan 20 12:51:13 UTC 2020 [ansible@control ~]$ cd rhce8-live/lesson4 [ansible@control lesson4]$ cat install-httpd.yml --- - name: install httpd hosts: ansible2.example.com tasks: - name: install package package: name: httpd state: present - name: create an index.html copy: content: 'welcome to this webserver' dest: /var/www/html/index.html - name: start the service service: name: httpd state: started enabled: true - name: open firewall firewalld: service: http permanent: yes state: enabled
- The execution result of ansible-playbook on the control node:
[ansible@control lesson4]$ ansible-playbook install-httpd.yml PLAY [install httpd] ************************************************************************************************** TASK [Gathering Facts] ************************************************************************************************ ok: [ansible2.example.com] TASK [install package] ************************************************************************************************ changed: [ansible2.example.com] TASK [create an index.html] ******************************************************************************************* changed: [ansible2.example.com] TASK [start the service] ********************************************************************************************** changed: [ansible2.example.com] TASK [open firewall] ************************************************************************************************** changed: [ansible2.example.com] PLAY RECAP ************************************************************************************************************ ansible2.example.com : ok=5 changed=4 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
- Check the installed httpd on the control node:
[ansible@control lesson4]$ curl http://ansible2.example.com welcome to this webserver
- Check the installed httpd on the second managed node, the same result:
vagrant ssh lab-ans-ansible2 [vagrant@ansible2 ~]$ curl http://localhost/ welcome to this webserver
- The sample on the control node:
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