ansicol
This containes a testbed entirely on docker-compose for experimenting with ansible. The setup consists of 3 centos7 containers and 3 Ubuntu18.08 container as target hosts and a control host from where to run the ansible playbooks.
What is the environment setup?
There is a control host followed by 3 Centos 7 and 3 Ubuntu 16.04 hosts. The src folder is mounted to bash /opt/sandbox/src of the control container.
Each non-control host has the below users and password:
root:root
ansicol:ansicolansicol is a sudor.
How to start the environment?
Go to the root of the project and run:
docker-compose up
This should bring up the whole cluster of machines mentioned above.
ansible/ansicol [ docker-compose ps master * ] 5:11 pm
Name Command State Ports
---------------------------------------------------------------------------
ansicol_c1_1 /usr/sbin/sshd -D Up 22/tcp
ansicol_c2_1 /usr/sbin/sshd -D Up 22/tcp
ansicol_c3_1 /usr/sbin/sshd -D Up 22/tcp
ansicol_control_1 /bin/bash Up 22/tcp
ansicol_u1_1 /usr/sbin/sshd -D Up 22/tcp, 50070/tcp, 8088/tcp
ansicol_u2_1 /usr/sbin/sshd -D Up 22/tcp, 50070/tcp, 8088/tcp
ansicol_u3_1 /usr/sbin/sshd -D Up 22/tcp, 50070/tcp, 8088/tcpHow do I validate the setup?
- Connect to the control host and validate ansible is installed.
ansible/ansicol [ docker container exec -it ansicol_control_1 bash master * ] 5:28 pm
root@control:/# ansible --version
ansible 2.5.1
config file = /etc/ansible/ansible.cfg
configured module search path = [u'/root/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
ansible python module location = /usr/lib/python2.7/dist-packages/ansible
executable location = /usr/bin/ansible
python version = 2.7.17 (default, Jul 20 2020, 15:37:01) [GCC 7.5.0]- Validate the control machine can reach all target hosts.
root@control:/# ping -c3 ansicol_c1_1
PING ansicol_c1_1 (10.6.0.4) 56(84) bytes of data.
64 bytes from ansicol_c1_1.ansicol_local (10.6.0.4): icmp_seq=1 ttl=64 time=0.108 ms
64 bytes from ansicol_c1_1.ansicol_local (10.6.0.4): icmp_seq=2 ttl=64 time=0.088 ms
64 bytes from ansicol_c1_1.ansicol_local (10.6.0.4): icmp_seq=3 ttl=64 time=0.099 ms
root@control:/# ping -c3 ansicol_c2_1
PING ansicol_c2_1 (10.6.0.5) 56(84) bytes of data.
64 bytes from ansicol_c2_1.ansicol_local (10.6.0.5): icmp_seq=1 ttl=64 time=0.445 ms
64 bytes from ansicol_c2_1.ansicol_local (10.6.0.5): icmp_seq=2 ttl=64 time=0.143 ms
64 bytes from ansicol_c2_1.ansicol_local (10.6.0.5): icmp_seq=3 ttl=64 time=0.184 ms
--- ansicol_c2_1 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2064ms
rtt min/avg/max/mdev = 0.143/0.257/0.445/0.134
etc- Validate the control host can ssh to all target hosts as ansicol user (password: ansicol)
ansible/ansicol [ docker container exec -it ansicol_control_1 bash master ] 8:35 pm
root@control:/opt/sandbox/src# ssh ansicol@c1
ansicol@c1's password:
Last login: Tue Aug 11 10:34:04 2020 from ansicol_control_1.ansicol_local
[ansicol@c1 ~]$ sudo su
[root@c1 ansicol]#
root@control:/opt/sandbox/src# ssh ansicol@u1
The authenticity of host 'u1 (10.6.0.7)' can't be established.
ECDSA key fingerprint is SHA256:a71Z38MkY/MVx569IiV9ZNvqUAKZa5IMMDHKEKUEZco.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'u1,10.6.0.7' (ECDSA) to the list of known hosts.
ansicol@u1's password:
Welcome to Ubuntu 16.04.6 LTS (GNU/Linux 4.19.76-linuxkit x86_64)
* Documentation: https://help.ubuntu.com
* Management: https://landscape.canonical.com
* Support: https://ubuntu.com/advantage
The programs included with the Ubuntu system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted by
applicable law.
$ sudo su
root@u1:/home/ansicol#Now we are all set!!!
What are the development workflow?
- On your host machine, using your favourite editor, compose any playbook.
- Update the hosts file as required.
- Connect to control container, and run the playbook