[root@fwang5stash ~]# ulimit -a
core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
scheduling priority             (-e) 0
file size               (blocks, -f) unlimited
pending signals                 (-i) 7167
max locked memory       (kbytes, -l) 32
max memory size         (kbytes, -m) unlimited
open files                      (-n) 1024
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) 10240
cpu time               (seconds, -t) unlimited
max user processes              (-u) 7167
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited

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1.临时修改

[root@fwang5stash ~]# ulimit -n 8192

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2.永久修改

修改/etc/security/limits.conf 添加如下一行：
* - nofile 8192

修改/etc/pam.d/login添加如下一行
session required /lib/security/pam_limits.so

重新登录后生效

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