node and Error: EMFILE, too many open files

Question

For some days I have searched for a working solution to an error

Error: EMFILE, too many open files

It seems that many people have the same proble

Answer 1

I did all the stuff above mentioned for same problem but nothing worked. I tried below it worked 100%. Simple config changes.

Option 1 set limit (It won't work most of the time)

user@ubuntu:~$ ulimit -n 65535

check available limit

user@ubuntu:~$ ulimit -n
1024

Option 2 To increase the available limit to say 65535

user@ubuntu:~$ sudo nano /etc/sysctl.conf

add the following line to it

fs.file-max = 65535

run this to refresh with new config

user@ubuntu:~$ sudo sysctl -p

edit the following file

user@ubuntu:~$ sudo vim /etc/security/limits.conf

add following lines to it

root soft     nproc          65535    
root hard     nproc          65535   
root soft     nofile         65535   
root hard     nofile         65535

edit the following file

user@ubuntu:~$ sudo vim /etc/pam.d/common-session

add this line to it

session required pam_limits.so

logout and login and try the following command

user@ubuntu:~$ ulimit -n
65535

Option 3 Just add below line in

DefaultLimitNOFILE=65535

to /etc/systemd/system.conf and /etc/systemd/user.conf