Tasting and findings on Docker Swarm cluster (docker-1.12+).
- Docker-1.12.0~rc4
- Adriano Vieira (adriano.svieira at gmail.com)
- TBD
Built on CentOS-7 as base.
- Virtualbox >= 4 (https://www.virtualbox.org)
- Vagrant >= 1.8 (https://vagrantup.com)
- plugin vagrant-hosts (vagrant-hosts - Manage vagrant guest local DNS resolution)
- plugin vagrant-hostsupdater (Vagrant::Hostsupdater - adds an entry to your /etc/hosts file on the host system)
- plugin vagrant-proxyconf -optional- (Proxy Configuration Plugin for Vagrant)
- optional install and use it only if you're behind a proxy
- Box
adrianovieira/centos7-docker1.12rc4(https://atlas.hashicorp.com/adrianovieira/boxes)
First of all install Virtualbox and Vagrant (if not installed yet) according to vendor manual for your platform.
$ vagrant plugin install vagrant-hosts
$ vagrant plugin install vagrant-hostsupdater
$ vagrant box add adrianovieira/centos7-docker1.12rc4
$ git clone https://github.com/adrianovieira/docker-swarm.git
$ cd docker-swarm
$ vagrant up
You could setup some environment variable for guests VM, as below:
OSLV_MEMORY: VM memory on virtualbox (default: 2048MB)OSLV_CPU: VM cpu/cores on virtualbox (default: 1 cpu/core)OSLV_PVTNET: VM private network (default: 192.168.50.10)OSLV_SWARM_WORKERS: VM docker swarm workers (default: 2)
If you want to personalize one of the above variable you need to export then before you turn the VM up
- e.g.
$ export OSLV_PVTNET=10.0.3.10 OSLV_SWARM_WORKERS=3.
We have a simple python app to taste this environment...
You could take a look at the script setup/docker-setup-swarm_test.sh and you could excute it to have a tasting of Swarm Cluster running a "real but simple app".
After bring environment up - and if everything goes up ok ;) - go inside manager1 and execute that script:
$ vagrant ssh manager1
then... inside manager1
$ /home/vagrant/sync/setup/docker-setup-swarm_test.sh
Well done... (if nothing goes wrong) now you could acces the application from your host browser: http://manager1/.
keep CALMS and having fun