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ansible-DockerLab

Infrastructure where you can test Docker stacks/services having a shared filesystem and a Virtual IP. The playbook install a Docker swarm on several nodes and setup gluster to share configuration.

Schema

Getting Started

You can play the playbook against a list of nodes prepared in an inventory

Prerequisites

To deploy you need Ansible.

The inventory should contain the group of nodes docker-bare_metal and the swarm managers docker_swarm_manager. Normally they coincide.

Example of inventory:

[docker-bare_metal]
raspberrypi0
raspberrypi1
raspberrypi2

[docker_swarm_manager:children]
docker-bare_metal

You should define the Virtual IP coherently with your subnet without collision. For example in a network 192.168.1.0/24:

keepalived_shared_ip=192.168.1.253

Deployment

Execution on live environment:

git clone --recursive https://github.com/fabrizio2210/ansible-DockerLab.git
cd ansible-DockerLab
ansible-playbook -i ../hosts.list setDocker-on-Raspberry.yml

Then you can access with browser to Portainer on port 9000 using the defined IP:

http://192.168.1.253:9000

Testing

Prerequisites

If you want to test the deploy in a virtual environment you need:

  • Vagrant
  • libvirt
  • Ansible

You can follow these guides for Vagrant/libvirt:

https://linuxsimba.com/vagrant-libvirt-install

https://docs.cumulusnetworks.com/display/VX/Vagrant+and+Libvirt+with+KVM+or+QEMU

https://docs.cumulusnetworks.com/cumulus-vx/Getting-Started/Libvirt-and-KVM-QEMU/

In summary the steps to do are:

sudo apt install vagrant vagrant-libvirt

sudo apt install libvirt-daemon-system  python3-distutils  python3-gi-cairo  python3-lib2to3  python3-libvirt qemu-kvm   spice-client-glib-usb-acl-helper  systemd-container    virt-manager  virt-viewer   virtinst  libgovirt-common   gir1.2-gtk-vnc-2.0

sudo systemctl restart libvirtd

# logout and login, you should have the libvirt group

sudo apt install python3-paramiko python3-venv python3-pip

I am using debian/jessie64 box.

Deployment

After you have Vagrant-libvirt intalled you can setup a testing environment with

git clone --recursive https://github.com/fabrizio2210/ansible-DockerLab.git
cd ansible-DockerLab
./test.sh

create test environment

Then you can access with browser to Portainer on port 9000 using the defined IP:

http://192.168.121.253:9000

Build with

I used these components:

  • Keepalived
  • Docker Swarm
  • GlusterFS
  • Portainer

I find useful to install after deployment also Traefik.

Authors