Passenger and multiple instances

Our production server has a pool size of 9, but Passenger for some reason spawn more than one pool of 9 insta开发者_C百科nces!

It appears that multiple Passenger instances are running. Please select a specific one by running:

passenger-status

The following Passenger instances are running: PID: 13281 PID: 31592

Of course, this kills our server a bit, since we really want to have just 9 instances (max) up. Any idea why this happens?

Thanks for any feedback!

From the Passenger documentation:

5.11.1. PassengerMaxPoolSize <integer>

[...]

This option may only occur once, in the global server configuration. The default value is 6.

This means you cannot use PassengerMaxPoolSize inside a vhost. Inside a vhost, you can use the PassengerMinInstances option to ensure that no single application takes up all the instances, or you may specify PassengerMaxInstancesPerApp on a global level to define the maximum number of instances per app.

For details, look at the Passenger documentation.