Delay upstart started event until Consul is ready

[gdavison]

When Consul is started with upstart, upstart emits a started event once the service is launched, but it takes several seconds before it is ready to serve requests. If you have other services, such as consul-replicate, which depend on Consul, they can thrash before Consul is ready.

A stanza can be added to the Consul upstart config that would delay emitting the event until it is ready, or a similar stanza can be added to the upstart configs of any services that depend on Consul. See http://upstart.ubuntu.com/cookbook/#post-start

I think it would make sense to add it to this cookbook, so that it's handled in one place, and also because it signals that Consul is truly ready.

Thoughts?

[johnbellone]

This makes sense to me. It should be added as a separate template and we can add the override in service options (consul service resource).

[lock]

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