Chef: Modify existing resource from another cookbook - resources

Question

I have two cookbooks: elasticsearch and curator.
Elasticsearch cookbook installs and configure an elasticsearch. The following resource (from elasticsearch cookbook), has to be modified from curator cookbook:
elasticsearch_configure 'elasticsearch' do
configuration ({
'http.port' => port,
'cluster.name' => cluster_name,
'node.name' => node_name,
'bootstrap.memory_lock' => false,
'discovery.zen.minimum_master_nodes' => 1,
'xpack.monitoring.enabled' => true,
'xpack.graph.enabled' => false,
'xpack.watcher.enabled' => true
})
end
I need to modify it on curator cookbook and add a single line:
'path.repo' => (["/backups/s3_currently_dev", "/backups/s3_currently", "/backups/s3_daily", "/backups/s3_weekly", "/backups/s3_monthly"])
How I can do that?

Answer 1

I initially was going to point you to the chef-rewind gem, but that actually points to the edit_resource provider that is now built into Chef. A basic example of this:
# cookbook_a/recipes/default.rb
file 'example.txt' do
content 'this is the initial content'
end
.
# cookbook_b/recipes/default.rb
edit_resource! :file, 'example.txt' do
content 'modified content!'
end
If both of these are in the Chef run_list, the actual content within example.txt is that of the edited resource, modified content!.
Without fully testing your case, I'm assuming the provider can be utilized the same way, like so:
edit_resource! :elasticsearch_configure, 'elasticsearch' do
configuration ({
'http.port' => port,
'cluster.name' => cluster_name,
'node.name' => node_name,
'bootstrap.memory_lock' => false,
'discovery.zen.minimum_master_nodes' => 1,
'xpack.monitoring.enabled' => true,
'xpack.graph.enabled' => false,
'xpack.watcher.enabled' => true,
'path.repo' => ["/backups/s3_currently_dev", "/backups/s3_currently", "/backups/s3_daily", "/backups/s3_weekly", "/backups/s3_monthly"]
})
end