MongoDB: too many connections, exiting?

[cjlee112]

Today I found the production site giving an error message indicating no DB connection. I checked the server and found mongoDB had exited, apparently normally, no indication why.

Possibly related issue: watching the mongod messages, I see the number of open connections going up steadily (24 at present). Not sure why, or even whether this is incorrect behavior (client driver libraries tend to use connection pooling which might make this normal, at least up to a point). Conceivably, if this keeps growing and growing, it could make the server exit?

Ideas:

• protect against mongod exit by running it from a script that just loops and restarts it.
• research the open connections growth question
• assess whether there's anything we could do in our code make this work better.

[cjlee112]

OK, I'm now running mongod within a while loop that will automatically restart it if it exits.