The default number of open files on Red Hat Linux 5 is 1024. Jive SBS requires a much higher limit for this. Not only does Jive open and close several files at once, but connections to ports are bundled in this limit as well. When a connection to a port is closed, it can hang in an open state for up to 3 minutes. If these connections are opened and closed rapidly, the number of open files can quickly spike to the limit.
If you reach the limit of open files, you will see something similar to this in the logs:
20:35:28,667 [http-0.0.0.0-9001-Acceptor-0] ERROR org.apache.tomcat.util.net.AprEndpoint - Socket accept failed I20:35:28,667 [http-0.0.0.0-9001-Acceptor-0] ERROR org.apache.tomcat.util.net.AprEndpoint - Socket accept failed org.apache.tomcat.jni.Error: Too many open files at org.apache.tomcat.jni.Socket.accept(Native Method) at org.apache.tomcat.util.net.AprEndpoint$Acceptor.run(AprEndpoint.java:1128) at java.lang.Thread.run(Thread.java:619)
In 18.104.22.168 it is not possible to install the RPM without first increasing the number of open files.
To fix this problem, increase the soft limit to 8192 and the hard limit to 65535 by following the steps below.
1. Edit /etc/security/limits.conf and add the lines:
* soft nofile 8192 * hard nofile 65535
2. Edit /etc/pam.d/login, adding the line:
session required /lib/security/pam_limits.so