I am using ubunto 18.04, When i run
redis-server on the terminal it says
# oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo # Redis version=4.0.9, bits=64, commit=00000000, modified=0, pid=11260, just started # Warning: no config file specified, using the default config. In order to specify a config file use redis-server /path/to/redis.conf # You requested maxclients of 10000 requiring at least 10032 max file descriptors. # Server can't set maximum open files to 10032 because of OS error: Operation not permitted. # Current maximum open files is 1022. maxclients has been reduced to 990 to compensate for low ulimit. If you need higher maxclients increase 'ulimit -n'. # Creating Server TCP listening socket *:6379: bind: Address already in use
I tried to increase this limit before by running
ulimit -n 10240
But it resulted in following error
bash: ulimit: open files: cannot modify limit: Operation not permitted
Then I tried to lower its value by running
ulimit -n 1022 and it surprisingly ran successfully and decreased that limit.
I then followed this answer, but after doing
echo 800000 > /proc/sys/fs/file-max overrides the "file-max" file but do not actually change max file limit
$ ulimit -n 1022
Here I found another related question and my case seem to be System C one. I tried doing the following.
1) I added the following lines in my
* soft nofile 4096 * hard nofile 10240
2) Added the following line in
3) Added the follwing in '/etc/pam.d/sshd' file
session required pam_limits.so
But still no effect.
ulimit -n command still shows 1022.