正文
CentOS修改ulimit
提示：扫一扫查出行【扫一扫了解最新限行尾号】
复制提示
一、概述
查看limit配置
# ulimit -a
core file size (blocks, -c)
data seg size (kbytes, -d) unlimited
scheduling priority (-e)
file size (blocks, -f) unlimited
pending signals (-i)
max locked memory (kbytes, -l)
max memory size (kbytes, -m) unlimited
open files (-n)
pipe size ( bytes, -p)
POSIX message queues (bytes, -q)
real-time priority (-r)
stack size (kbytes, -s)
cpu time (seconds, -t) unlimited
max user processes (-u)
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
其中最大进程数和最大文件打开数，需要修改一下。否则相关软件，无法启动。
二、永久生效的方法环境说明
操作系统：centos 6.9
limits.conf
修改/etc/security/limits.conf文件
在文件末尾添加
* soft nofile
* hard nofile
* soft nproc
* hard nproc
说明：
* 代表针对所有用户
noproc 是代表最大进程数
nofile 是代表最大文件打开数
90-nproc.conf
光修改上面一个文件是不行的，还需要修改一个文件。
修改/etc/security/limits.d/90-nproc.conf文件
删掉默认配置，修改如下：
* soft nproc
* hard nproc
修改2个配置文件之后，重启后生效
reboot -f
查看配置# ulimit -a
core file size (blocks, -c)
data seg size (kbytes, -d) unlimited
scheduling priority (-e)
file size (blocks, -f) unlimited
pending signals (-i)
max locked memory (kbytes, -l)
max memory size (kbytes, -m) unlimited
open files (-n)
pipe size ( bytes, -p)
POSIX message queues (bytes, -q)
real-time priority (-r)
stack size (kbytes, -s)
cpu time (seconds, -t) unlimited
max user processes (-u)
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
# ulimit -a
core file size (blocks, -c)
data seg size (kbytes, -d) unlimited
scheduling priority (-e)
file size (blocks, -f) unlimited
pending signals (-i)
max locked memory (kbytes, -l)
max memory size (kbytes, -m) unlimited
open files (-n)
pipe size ( bytes, -p)
POSIX message queues (bytes, -q)
real-time priority (-r)
stack size (kbytes, -s)
cpu time (seconds, -t) unlimited
max user processes (-u)
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
本文参考链接：
https://blog.csdn.net/xzw_123/article/details/46878459
