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DarthSim / overmind

Process manager for Procfile-based applications and tmux
MIT License
2.82k stars 79 forks source link

Stop specific processes before terminating the rest of the processes #134

Open lunaisnotaboy opened 2 years ago

lunaisnotaboy commented 2 years ago

So this may be a weird request, but I have a dilemma. I have an application that requires patched versions of Redis and Memcached, so at checkout the setup script builds both of them from source. Because of this, both Redis and Memcached are started with the rest of the process in the development Procfile.

Would it be possible when Overmind receives a Ctrl+C to stop a program (in this case Rails and Sidekiq) before stopping Redis and Memcached so that the programs can store their data properly before shutdown?

Sorry for such a weird request.

lunaisnotaboy commented 2 years ago

Oh, I probably should've included my Procfile in the initial request, sorry!

web: bin/rails s -p 3000
webpacker: bin/webpacker-dev-server
sidekiq: bin/sidekiq
meilisearch: bin/meilisearch --master-key="apikey"
memcached: bin/memcached -vv
redis: bin/redis-server
DarthSim commented 1 year ago

Hey @lunaisnotaboy! This feature requires rewriting too much stuff for such a niche feature. So I'd not add it right away but I'll keep this feature request open just in case I or somebody comes up with a good solution.

lunaisnotaboy commented 1 year ago

Ah, okay. Thanks!

tenpaiyomi commented 1 year ago

Just making a note that I'm running into this exact situation as well of needing a few processes that are reliant on by others to be gracefully stopped before the other processes. Not sure of a real solution at the point, I'll noodle on it a bit, but could definitely see the value in having some way to say "don't send the kill signal to process X until after process Y has fully shut down."