mongodb : Increasing max connections in mongodb

Question

i need your help in solving this

this is the result of my ulimit -a on my linux server

   core file size          (blocks, -c) 0
schedu         


        

Answer 1

It seems MongoDB has no limit on incoming connections and you should modify system-wide limit, see official doc:

Unless constrained by system-wide limits, MongoDB has no limit on incoming connections. On Unix-based systems, you can modify system limits using the ulimit command, or by editing your system’s /etc/sysctl file. See UNIX ulimit Settings for more information.

Recommended ulimit Settings(offical doc):

-f (file size): unlimited

-t (cpu time): unlimited

-v (virtual memory): unlimited

-n (open files): 64000

-m (memory size): unlimited

-u (processes/threads): 64000

Remember to restart your mongod and mongos instances after changing the ulimit settings to ensure that the changes take effect.

Source: number-of-connections recommended-ulimit-settings