1 在vim /etc/security/limits.conf 最后增加：
2 * soft nofile 65535
3 * hard nofile 65535
4 * soft nproc 65535
5 * hard nproc 65535
6 [root@centos8 ~]# reboot
7 [root@centos8 ~]# ulimit -a
8 core file size (blocks, -c) 0
9 data seg size (kbytes, -d) unlimited
10 scheduling priority (-e) 0
11 file size (blocks, -f) unlimited
12 pending signals (-i) 7661
13 max locked memory (kbytes, -l) 64
14 max memory size (kbytes, -m) unlimited
15 open files (-n) 65535
16 pipe size (512 bytes, -p) 8
17 POSIX message queues (bytes, -q) 819200
18 real-time priority (-r) 0
19 stack size (kbytes, -s) 8192
20 cpu time (seconds, -t) unlimited
21 max user processes (-u) 65535
22 virtual memory (kbytes, -v) unlimited
23 file locks (-x) unlimited
24 [root@centos8 ~]# ulimit -n
25 65535