Getting a single service instance with consul-template

[Jeff Fouchard]

Hello,

Doing some initial exploration with consul-template and have hit a bit of stumbling block.  Is there an easy way to return a single instance of a service without resorting to DNS? I may be dense but the examples all seem to show one line per instance. Thats fine for HAProxy, but sometimes we need just one.  Currently the environment is not guaranteed to have consul as DNS endpoint.  

Thanks,

Jeff

[Armon Dadgar]

Hey Jeff,

You basically just want to query the service which will return a list of IPs and just consume one of them.

For example:

{{ with $instances := service “my-service” }}

{{ if len $instances > 0 }}

    {{ with $first := index $instances 0 }}

    my-service: {{ first.Addr }}

{{ end }}

This has not been tested, but something like that should work.

Best Regards,

Armon Dadgar

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