This module contains terrafrom code for setting up a nomad cluster. The module creates:
- nomad-servers (datacenter: backoffice-master), nomad-clients (datacenter: public-services, private-services, backoffice, content-connector)
At examples/nomad there is a full running example (incl. minimal needed environment).
module "nomad" {
source = "git::https://github.com/MatthiasScholz/cos.git/modules/nomad?ref=v0.2.0.
# for parameters see vars.tf and the inputs section
}The variables consul_cluster_tag_key and consul_cluster_tag_value are important for creating a running nomad-cluster using consul. These are required to be set correctly to ensure that the consul-agents (on the nomad instances) are able to find the consul-server instances and register themselves.
consul_cluster_tag_key: Defines the name of the tag which was used to tag the consul-server nodes. Usually this is consul-servers.
consul_cluster_tag_value: Defines the value of the consul_cluster_tag_key that was used to tag the consul-server nodes. Usually this is the name of the consul-server instances.
On each nomad instance there is a consul-agent that tries to find the consul-server instances for being able to form a consul cluster.
If, for example, the consul-server EC2 instances are tagged with consul-server:my-consul-instance, then consul_cluster_tag_key="consul-server" and consul_cluster_tag_value="my-consul-instance"