Use elb address as retry-join?

[Yong Zhang]

Hi, all

I'm using a public cloud provider to build consul cluster, cluster nodes are managed by Auto Scaling Group (this means when nodes are dead they will be killed by ASG and ASG will start new one), and in front of consul server nodes there's an ELB (load balancer), consul cloud auto-joining supports cloud provider like aws, azure... so it supports defining retry-join like -retry-join "provider=aws tag_key=... tag_value=...", but my cloud provider is not in the list, I'm wondering if I can use elb IP address as the value of -retry-join so it can find dynamic nodes behind elb? 

Thanks.

[Shantanu Gadgil]

In my quick opinion, if the ELB ip address/cname/dns name is constant, then this could work, (eventually) though, what also comes to mind is...
How/why will the connection go to all servers?

This is a good use case to try and see what actually happens when you delete one server and new one is created in its place.

[Jason]

I've done this (well, I used the ELB _DNS_ as IP addresses of ELBs
change). Everything worked fine. My observation was Consul used the ELB
to initially connect to a consul server, after which gossip took over
and the ELB was not further used.

-Jason Martin

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[Yong Zhang]

Thanks Jason. And is this a production ready solution? Official documents didn't mention this even one word.