Re: apache-tomcat-8.5.59 too many open files on Linux 8

Mmm. Nothing very special in that netstat output. The sockets seen there look quite normal for tomcat, and there are not a lot. What about the IPv4 sockets ? (remove the -6 in your netstat command) Looks like lsof is counting things which are not IPv6 TCP sockets belonging to the tomcat JVM

RE: apache-tomcat-8.5.59 too many open files on Linux 8

Here it is: # netstat -p -a --tcp | grep 130244 tcp6 0 0 [::]:pcsync-https [::]:* LISTEN 130244/java tcp6 0 0 [::]:https [::]:* LISTEN 130244/java tcp6 0 0 [::]:37537 [::]:*