Get checks by state

[jeromegn]

Get checks by state

[pierresouchay]

Hello @jeromegn,

Yes, this endpoint is nice, but has a few drawbacks:

• it does not allow to list services (see this discussion for instance in hashicorp/consul#7384 )
• its output might be huge and change every ms in large clusters (in our case, it would be changing all the time)

What is exactly you use-case?

It really depends on what you want to do, I suspect some might use it in an interesting way, but I had no use for it now. If you want to do a PR to support it, I would be glad to help you implement it, however (see https://github.com/criteo/consul-templaterb/blob/master/lib/consul/async/consul_template.rb#L142 for example, implementation is straightforward)

[jeromegn]

I can work around it! Getting checks per node works for me.

Our use case is our global load balancer. We're currently manually querying Consul at runtime, but I'm now exploring generating the config outside of it. We're sometimes pulling 1 Gbps between our consul servers and clients...

We need to know about every service across all datacenters (our setup currently has a single "global" datacenter) and their health status. I'm fetching all services for each node, then all checks for the node. For each service I then select all checks that match its ID and manually instantiate a Consul::Async::ServiceInstance to use the status method and figure out if the service is healthy.

Do you have a public chat room, forum or some other place to discuss? I don't have any issues right now, but I found this project when reading consul issues and noticed you had issues similar to ours. Would be interesting to chat!

[pierresouchay]

No, it is far easier than that, have a look in samples, you can for instance check the HaProxy configuration examples, you can just use templates, it will work nicely, no real code to do.

[pierresouchay]

I'll be glad to exchange, drop me a msg on Twitter (@vizionr), I'll send you my address

[pierresouchay]

@jeromegn I would start how much bandwith uses this template on your cluster: https://github.com/criteo/consul-templaterb/blob/master/samples/all_services.txt.erb

[pierresouchay]

Fixed by d867412 and released in version 1.27.0