bind public ip

[edison]

Hey guys
I`m tring to test consul cluster through two different dc.
So consul should connect each other with public ip.
what should i do?
Can i just "-bind=public ip"?
I got a error "Error starting agent: Failed to start Consul server: Failed to start RPC layer: listen tcp xxxx:8300: bind: cannot assign requested address "

Thanks

[James Phillips]

Hi,

The -bind argument should allow Consul to listen on an external address. That error message looks like there's no interface on the machine with the address you've chosen. Can you double check the network interfaces on that machine?

-- James

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[David Adams]

If you are on a cloud platform like AWS, your public IP may not be the same as your bind IP. In most cases you shouldn't need to specify a bind address, unless you have multiple network interfaces and you want to bind only to one of them. But if other members of your consul cluster will use a different IP address to connect to your consul server, you can specify that address using the "-advertise=public-ip" option or "-advertise-wan=public-ip" if it's *only* for WAN connectivity between datacenters.

In my case, using AWS with VPCs, we use just the -advertise-wan option, because local cluster clients in the same VPC will use the (automatically discovered) 10.x.x.x address to connect to the server, but WAN partners in other Consul datacenters use the instance's public IP address.

Hope that all makes sense.

-dave

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