I want to use Consul to provide healthchecks for Amazon ELBs. Basically, I wanted to set the ELB healthcheck to query an instance's health by hitting some Consul HTTP endpoint. The /v1/agent endpoint seems close to what I want, but there doesn't seem to be a /v1/agent/service/<service_id>/health endpoint. Does such an endpoint exist (maybe I am looking in the wrong place)?
joshuaspence
All 5 comments
Hi @joshuaspence we don't currently have an agent-level endpoint to pull the health of an agent. There's https://www.consul.io/docs/agent/http/health.html#health_node but that'll end up going up to the Consul servers, and the HTTP status code doesn't indicate the state of the health checks. This looks like a possible dup of https://github.com/hashicorp/consul/issues/1468.
slackpad
on 9 Nov 2016
+1
How can I use consul with an ELB? I want to have the elb take out the instance if I put it in maintenance mode.
brumschlag
on 9 Jun 2017
Would the upstream be interested in a pull request for this functionality?
joshuaspence
on 20 Jul 2017
We would definitely be interested by having /v1/agent/service/<service id>/health return 200, 429 or 500.
That would allow to configure complex checks on consul side and expose a very simple interface for our loadbalancer (which would delegate healthchecks to consul).
kamaradclimber
on 6 Oct 2017
@joshuaspence
I wanted the same functionality, so I developed a sidecar that can be used to accomplish this: Consulate. The first version is done and I'm testing it in my dev environment this week. Would love any feedback!
kadaan
on 19 Feb 2018
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Most helpful comment
We would definitely be interested by having
/v1/agent/service/<service id>/healthreturn 200, 429 or 500.That would allow to configure complex checks on consul side and expose a very simple interface for our loadbalancer (which would delegate healthchecks to consul).