Overview

If your FileCatalyst Server is installed on a Linux/Unix system and after few hours/days of using the FileCatalyst Server an error of Too many open files is observed it is an indication that the FileCatalyst Server service is hitting the default soft open file limit which is 1024. This is a default value allocated to all running applications on Linux/Unix system.

Environment

FileCatalyst Server v3.0 or later.
Linux OS.

Resolution

Configure the ulimit values and run the commands below as a root user.

1. Stop the FileCatalyst Server service. Run the following command:
   
   service fcserver stop
   
   
2. Set ulimit values for open files at the application level. Edit /etc/init.d/fcserver using nano or vi and add the following lines:
   
   ulimit -Sn 60000
   ulimit -Hn 60000
   
   In this example, we set the ulimit value for the FileCatalyst Server is 60000.
   
   
3. Reload the systemd manager configuration to use the new ulimit values using the command below:
   
   systemctl daemon-reload
   
   Alternatively, you can also reboot the Linux OS running the FileCatalyst Server.
   
   
4. To verify if the changes we made are applied to the FileCatalyst Server use the following steps:
   
   
   • Find Process ID (PID) of FileCatalyst Server. Run the following command and note down the PID of the server which is the very first value right next to the user value.
     
     ps -ef | grep java
     
     Output:
     
     [email protected]:/etc/init.d# ps -ef | grep java
     root       985 804 99 11:29 ?        00:00:15 /usr/bin/java -XX:MaxDirectMemorySize=1G -XX:+UseConcMarkSweepGC -Dsun.java2d.noddraw=true -Dsun.java2d.d3d=false -Xms4096m -Xmx4096m -Djava.library.path=./lib:. -classpath ./lib/wrapper.jar:./FileCatalystServer.jar…
     
     In the following example, the user is “root” and the PID value is 985.
     
     
5. To check if the limits were applied run:
   
   cat /proc/{PID}/limits
   
   Example:
   
   cat /proc/985/limits
   
   Limit               Soft Limit      Hard Limit Units
   Max open files   60000          60000 files