Multiple mongrel_clusters in single machine problem

Hi,

I have just tried to setup multiple mongrel_clusters on a single
machine. When started, it looked fine and all clusters were up, however,
after a while, only 1 cluster was still alive, all others gone.

Here’s the settings:

CentOS 4.3
mongrel (0.3.13.3)
mongrel_cluster (0.2.0)
rails (1.1.4)
ruby (1.8.4)

Links in /etc/mongrel_cluster
peter.yml
mary.yml
and so on…

cluster 1

user: mongrel
cwd: /usr/local/apache2/htdocs/peter
port: “8000”
environment: development
group: mongrel
address: 127.0.0.1
pid_file: log/mongrel.pid
servers: 3

cluster 2

user: mongrel
cwd: /usr/local/apache2/htdocs/mary
port: “3000”
environment: development
group: mongrel
address: 127.0.0.1
pid_file: log/mongrel.pid
servers: 3

and so on…
I have made sure that the ports are unused and have no overlapping.

Anyone has got a clue?