Some experiments with setting up Nomad and
Consul using Ansible in Vagrant (1.8+ required
as it uses ansible_local provisioning).
Create 4 machines with
vagrant up
and head to localhost:8080 to see Consul's web UI with all the nodes.
It's time to throw some tasks into the cluster. Download Nomad
to have nomad command available in terminal and run the following
nomad node-status
output should be like this
ID DC Name Class Drain Status
90c877a8-b52c-1867-7b8e-8f83543ea782 dc1 client2 <none> false ready
ac53e70d-8a3b-bd96-8b35-111629e2bb0e dc1 client1 <none> false ready
This means Nomad server is visible from your host.
Now you can run nomad jobs and have nomad schedule them
nomad run example.nomad
This should allocate 1 nginx and 1 redis docker container.
Type nomad status to check job's status and nomad status example to
take a closer look at the example nomad task. Consul (at localhost:8080)
should show its availability status and monitor each container's health (try
to kill the container on client1 or client2 with docker kill [containerId]).
Feel free to adjust count parameter in example.job, run nomad run example.nomad
and watch nomad do the resize.