Ubuntu ulimit ихэсгэх
Set Permanently ulimit -n / open files in ubuntu
Few days ago, my golang app in development server halted, then i check app’s log.
2018/03/26 10:06:56.373 [server.go:2921] [HTTP] http: Accept error: accept tcp [::]:80: accept4: too many open files; retrying in 1s
so, i check ulimit in my server, got open files configuration is default, 1024. Then i try set to 65535 which is that configuration is standart configuration in production server to avoid that error. Just typing as following :
- set limit
user@ubuntu:~$ ulimit -n 65535
When i relogin, i check again open files configuration, got 1024 or back to default. So, i want to set that new configuration (65535) permanently in my server. You can do it with following steps below :
- available limit
user@ubuntu:~$ ulimit -n 1024
- To increase the available limit to say 65535
user@ubuntu:~$ sudo vim /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
if you got error “sysctl: permission denied on key ‘fs.file-max’”, you can skip that step, then you doing steps as below :
- edit the following file
user@ubuntu:~$ sudo vim /etc/security/limits.conf
- add following lines to it
- soft nproc 65535
- hard nproc 65535
- soft nofile 65535
- hard nofile 65535
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
