use ulimit -n instead of change the limits globally

README.md

@@ -10,25 +10,7 @@ We assume you have created the `steam` user to store steamcmd and your ARK serve
 
 ## Requirements
 
-### Increase max open files
-
-Edit /etc/sysctl.conf and set:
-```
-fs.file-max=100000
-```
-Edit /etc/security/limits.conf and set these limits:
-```
-* soft nofile 100000
-* hard nofile 100000
-```
-Add the following line to `/etc/pam.d/common-session` (Debian/Ubuntu) or `/etc/pam.d/system-auth` (RHEL/CentOS/Fedora):
-```
-session required pam_limits.so
-```
-
-After these edits, you'll need to restart your bash session or reconnect to your SSH shell to make the changes effective.
-
-### Open firewall ports
+To allow your ARK server to communicate with the outside you have to open some ports in your firewall:
 
 ```sh
 iptables -I INPUT -p udp --dport 27016 -j ACCEPT

tools/arkmanager

@@ -34,6 +34,7 @@ timestamp=$( date +%T )
 GREEN="\\033[1;32m"
 RED="\\033[1;31m"
 NORMAL="\\033[0;39m"
+maxOpenFiles=100000
 
 arkmanagerLog="arkmanager.log"  # here are logged the actions performed by arkmanager
 arkserverLog="arkserver.log"    # here is logged the output of ShooterGameServer
@@ -187,6 +188,8 @@ doStart() {
     arkserveropts="${arkserveropts}?listen"
     # run the server in background
     echo "$timestamp: start" >> "$logdir/$arkserverLog"
+    # set max open files limit before we start the server
+    ulimit -n $maxOpenFiles
     nohup "$arkserverroot/$arkserverexec" "$arkserveropts" </dev/null >"$logdir/$arkserverLog" 2>&1 & # output of this command is logged
     echo "$timestamp: start" >> "$logdir/$arkmanagerLog"
     tput rc; tput ed;