consul-template: query by service.tag

[Ivan Savčić]

Hello,

I have troubles iterating over service.tag.

This doesn't work:

{{ range service "helloworld.prod" }}

  {{ .Address }}:{{ .Port }} {{ .Tags }}

{{ end }}

This does work:

{{ range service "helloworld" }}

  {{ if .Tags | contains "prod" }}

    {{ .Address }}:{{ .Port }} {{ .Tags }}

  {{ end }}

{{ end }}

helloworld has instances with only [prod] or with [prod foo] tags, the output of second template looks like:

x.x.x.x:a [foo prod]

y.y.y.y.b [prod]

Any ideas on what I am doing wrong?

Consul server is v0.6.3, consul-template is v0.15.0

Thanks!

Ivan

[Ivan Savčić]

Just to add, by "doesn't work" I mean "it returns nothing", there is no error.

Ivan

[Kevin Lee]

Try putting the tag before the service name like you would typically do when looking up a service by tag in consul.

tag.service
prod.helloworld

https://github.com/hashicorp/consul-template/issues/33

[Ivan Savčić]

Brilliant, thank you! It works like a charm. I've been looking at the documentation and the issues of course, but I somehow permuted those two... Thanks again

Ivan

[james....@made.com]

FWIW This is how I am using service tags in haproxy

{{ range $tag, $services := service "some-service" | byTag }}

backend some-service-{{ $tag }}

    {{ if eq $tag "something" }}

    ....

    {{ end }}

    ...

    {{ range $services }}

    server {{.Address}}-{{.Port}} {{.Address}}:{{.Port}} check downinter 3s inter 2000 fall 3 maxconn 100 check cookie {{.ID}} weight 1

    {{ end }}

{{ end }}

James