I wanted a process to be unique in the cluster, thanks to :global name registration. I also wanted another node to start the child if the node hosting the child died.
First I tried to achieve that with Horde, but I really wanted the child to be in my supervision tree, and no “start the child on that other supervisor” Task under my tree.
Then I found this blog post that said that, indeed, Horde was not meant for that, and that there was a simpler way with :global. Plus, the author of that blog post is the author of the Horde library, which made me confident that I was on the right path.
The author proposed its own way using global, Highlander, but it seems abandoned.
So I made a similar tool called GlobalChild (+ docs), it is simple to use and works pretty well 
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