One cause of the problems is that the servers are handling multiple ruby deamons amongst which some Rails apps.
I know things get simpler when you keep "one app/thread - one server". But price-wise that doesn't make sense, especially since many common Rails apps hardly run on a the cheapest VPS (a throttled dual-core 500MB server). If you run ten tiny services, ten servers add up quickly.
I also host some larger apps on their own server, some loadbalanced over multiple servers.
But throwing 10+ ruby services on a VPS is hard. Especially if you don't want to, or cannot constrain their ruby-versions, app-server, etc.
It is hard for the exact same reason why setting up a local env may be hard. I recently had to help a co-worker on an old MacOS machine who broke her entire mac-desktop because she installed RVM because somehow that was in the tutorial for getting the app locally.
Anything with a runtime is harder than anything without that runtime. This is too obvious, but does warrant some highlighting.
Ruby's runtime is one of the hardest of all runtimes because it comes with so many moving parts. Python is a close second, and on Ubuntu (my main driver) probably worse than Ruby, because fing up Node is fine, but fing up Python can render your machine unusable, unrecoverable so without good understanding of all python things.
I know things get simpler when you keep "one app/thread - one server". But price-wise that doesn't make sense, especially since many common Rails apps hardly run on a the cheapest VPS (a throttled dual-core 500MB server). If you run ten tiny services, ten servers add up quickly.
I also host some larger apps on their own server, some loadbalanced over multiple servers.
But throwing 10+ ruby services on a VPS is hard. Especially if you don't want to, or cannot constrain their ruby-versions, app-server, etc.
It is hard for the exact same reason why setting up a local env may be hard. I recently had to help a co-worker on an old MacOS machine who broke her entire mac-desktop because she installed RVM because somehow that was in the tutorial for getting the app locally.
Anything with a runtime is harder than anything without that runtime. This is too obvious, but does warrant some highlighting. Ruby's runtime is one of the hardest of all runtimes because it comes with so many moving parts. Python is a close second, and on Ubuntu (my main driver) probably worse than Ruby, because fing up Node is fine, but fing up Python can render your machine unusable, unrecoverable so without good understanding of all python things.