You requested maxclients of 10000 requiring at least 10032 max file descriptors

I have installed it erpnext successfully. But now when I run bench start . It shows following. WHat does it mean .Also I could not get the url for this . I have installed it on centos vps. How to get url to open it.
Tried changing the domain using this link
I have created a sub domain for this and added it like it says in the link . But I cant get how to set up . I have added public_html to the domain folder on the hosting

-bash-4.2$ bench --site site1.local install-app erpnext
-bash-4.2$ bench start
14:21:22 system | redis_socketio.1 started (pid=14286)
14:21:22 redis_socketio.1 | 14286:M 28 Sep 14:21:22.814 # You requested maxclients of 10000 requiring at least 10032 max file descriptors.
14:21:22 redis_socketio.1 | 14286:M 28 Sep 14:21:22.814 # Server can’t set maximum open files to 10032 because of OS error: Operation not permitted.
14:21:22 redis_socketio.1 | 14286:M 28 Sep 14:21:22.814 # Current maximum open files is 4096. maxclients has been reduced to 4064 to compensate for low ulimit. If you need higher maxclients increase ‘ulimit -n’.
14:21:22 redis_socketio.1 | 14286:M 28 Sep 14:21:22.814 # Creating Server TCP listening socket 127.0.0.1:12000: bind: Address already in use
14:21:22 system | redis_socketio.1 stopped (rc=1)
14:21:22 system | redis_queue.1 started (pid=14296)
14:21:22 redis_queue.1 | 14296:M 28 Sep 14:21:22.817 # You requested maxclients of 10000 requiring at least 10032 max file descriptors.
14:21:22 redis_queue.1 | 14296:M 28 Sep 14:21:22.817 # Server can’t set maximum open files to 10032 because of OS error: Operation not permitted.
14:21:22 redis_queue.1 | 14296:M 28 Sep 14:21:22.817 # Current maximum open files is 4096. maxclients has been reduced to 4064 to compensate for low ulimit. If you need higher maxclients increase ‘ulimit -n’.
14:21:22 redis_queue.1 | 14296:M 28 Sep 14:21:22.818 # Creating Server TCP listening socket 127.0.0.1:11000: bind: Address already in use
14:21:22 system | redis_queue.1 stopped (rc=1)
14:21:22 system | worker_long.1 started (pid=14288)
14:21:22 system | web.1 started (pid=14297)
14:21:22 system | schedule.1 started (pid=14298)
14:21:22 system | worker_short.1 started (pid=14305)
14:21:22 system | worker_default.1 started (pid=14299)
14:21:22 system | redis_cache.1 started (pid=14302)
14:21:22 redis_cache.1 | 14302:M 28 Sep 14:21:22.838 # You requested maxclients of 10000 requiring at least 10032 max file descriptors.
14:21:22 redis_cache.1 | 14302:M 28 Sep 14:21:22.838 # Server can’t set maximum open files to 10032 because of OS error: Operation not permitted.
14:21:22 redis_cache.1 | 14302:M 28 Sep 14:21:22.838 # Current maximum open files is 4096. maxclients has been reduced to 4064 to compensate for low ulimit. If you need higher maxclients increase ‘ulimit -n’.
14:21:22 redis_cache.1 | 14302:M 28 Sep 14:21:22.838 # Creating Server TCP listening socket 127.0.0.1:13000: bind: Address already in use
14:21:22 system | redis_cache.1 stopped (rc=1)
14:21:22 system | socketio.1 started (pid=14300)
14:21:22 system | watch.1 started (pid=14301)
14:21:22 system | sending SIGTERM to worker_long.1 (pid 14288)
14:21:22 system | sending SIGTERM to watch.1 (pid 14301)
14:21:22 system | sending SIGTERM to web.1 (pid 14297)
14:21:22 system | sending SIGTERM to schedule.1 (pid 14298)
14:21:22 system | sending SIGTERM to worker_default.1 (pid 14299)
14:21:22 system | sending SIGTERM to socketio.1 (pid 14300)
14:21:22 system | sending SIGTERM to worker_short.1 (pid 14305)
14:21:22 system | socketio.1 stopped (rc=-15)
14:21:22 system | worker_short.1 stopped (rc=-15)
14:21:22 system | worker_default.1 stopped (rc=-15)
14:21:22 system | worker_long.1 stopped (rc=-15)
14:21:22 system | schedule.1 stopped (rc=-15)
14:21:22 system | watch.1 stopped (rc=-15)
14:21:22 system | web.1 stopped (rc=-15)

Check the maxclients in your OS, you might have to increase that setting.

Thanks for this . Fixed it . Right now its url is [my-ip-address]:8000 but I need to make the url as subdomain.maindomain.com. I tried domain setup in frappe. But I could not make it work .
The command executed successfully.
LINK

But nothing happens when I open the url .

maindomain is already pointed the vps.

Also Can I install another instance or a fresh copy on the same vps. How could I change change its port if by default it installs uses 8000.

Please start a new topic for a new issue.