Consul Notes

notes.txt

Grab the two node vagrant set up from here: 

https://github.com/hashicorp/consul/tree/master/demo/vagrant-cluster

Install consul

wget https://dl.bintray.com/mitchellh/consul/0.4.1_linux_amd64.zip

Copy consul into /usr/local/bin

Run it

consul agent -server -bootstrap-expect 1 -data-dir /tmp/consul

Run it with a directory with service definitions

1st, create /etc/consul.d

2nd, add a service defnition

sudo echo '{"service": {"name": "web", "tags": ["rails"], "port": 80}}' > /etc/consul.d/web.json

Then run it like

consul agent  -server -bootstrap-expect 1 -data-dir /tmp/consul -config-dir /etc/consul.d 

Note that I had to clear out /tmp/consul to get the service version to work

Some queries:

consul members
dig @127.0.0.1 -p 8600 n1.node.consul
dig @127.0.0.1 -p 8600 web.service.consul
curl localhost:8500/v1/catalog/nodes

For the web console

wget https://dl.bintray.com/mitchellh/consul/0.4.1_web_ui.zip

Unzip it, note the full path, in this case /home/vagrant/dist

Include the -web-ui argument to the agent. Also, by default clients are only
bound to 127.0.0.1, so add the -client option if that is not acceptable

consul agent -server -bootstrap-expect 1 -data-dir /tmp/consul \
 -node=agent-one -bind=172.20.20.10 -ui-dir /home/vagrant/dist/ -client 172.20.20.10