Elasticsearch grafana index is not easily configurable

[sonnysideup]

https://github.com/JonathanTron/chef-grafana/blob/master/attributes/default.rb#L64

Since node['grafana']['datasources']['elasticsearch']['index'] is a derived value (i.e. string interpolated using another node value), it will not change whenever someone changes node['grafana']['grafana_index'].

[JonathanTron]

I know, this is a pet peave I have with attributes, what do you propose to fix it?

There's a lot of alternatives, but each have it's own set of problems.

I'm usually keen to create wrapper cookbooks and chef-grafana is meant to be used wrapped into one when default configuration is not enough. Then replacing the whole default['grafana']['datasources'] makes more sense.

[sonnysideup]

You're right, there are a number of alternatives. Let me fork and toy with it a bit to see if can come up with something that works well.

[lock]

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