1.优化脚本
if [ `grep 'soft memlock unlimited' /etc/security/limits.conf|wc -l ` -eq 0 ];then
echo '* soft memlock unlimited' >> /etc/security/limits.conf
fi
if [ `grep 'hard memlock unlimited' /etc/security/limits.conf|wc -l ` -eq 0 ];then
echo '* hard memlock unlimited' >> /etc/security/limits.conf
fi
if [ `grep 'vm.max_map_count' /etc/sysctl.conf|wc -l` -eq 0 ];then
echo 'vm.max_map_count=262144' >>/etc/sysctl.conf
fi
if [ `grep 'soft nofile 65536' /etc/security/limits.conf|wc -l` -eq 0 ];then
echo "* soft nofile 65536" >> /etc/security/limits.conf
fi
if [ `grep 'hard nofile 65536' /etc/security/limits.conf|wc -l` -eq 0 ];then
echo "* hard nofile 65536" >> /etc/security/limits.conf
fi
2.limits文件全部内容
[root@centos7 ~]# cat /etc/security/limits.conf
# /etc/security/limits.conf
#
#This file sets the resource limits for the users logged in via PAM.
#It does not affect resource limits of the system services.
#
#Also note that configuration files in /etc/security/limits.d directory,
#which are read in alphabetical order, override the settings in this
#file in case the domain is the same or more specific.
#That means for example that setting a limit for wildcard domain here
#can be overriden with a wildcard setting in a config file in the
#subdirectory, but a user specific setting here can be overriden only
#with a user specific setting in the subdirectory.
#
#Each line describes a limit for a user in the form:
#
#<domain> <type> <item> <value>
#
#Where:
#<domain> can be:
# - a user name
# - a group name, with @group syntax
# - the wildcard *, for default entry
# - the wildcard %, can be also used with %group syntax,
# for maxlogin limit
#
#<type> can have the two values:
# - "soft" for enforcing the soft limits
# - "hard" for enforcing hard limits
#
#<item> can be one of the following:
# - core - limits the core file size (KB)
# - data - max data size (KB)
# - fsize - maximum filesize (KB)
# - memlock - max locked-in-memory address space (KB)
# - nofile - max number of open file descriptors
# - rss - max resident set size (KB)
# - stack - max stack size (KB)
# - cpu - max CPU time (MIN)
# - nproc - max number of processes
# - as - address space limit (KB)
# - maxlogins - max number of logins for this user
# - maxsyslogins - max number of logins on the system
# - priority - the priority to run user process with
# - locks - max number of file locks the user can hold
# - sigpending - max number of pending signals
# - msgqueue - max memory used by POSIX message queues (bytes)
# - nice - max nice priority allowed to raise to values: [-20, 19]
# - rtprio - max realtime priority
#
#<domain> <type> <item> <value>
#
#* soft core 0
#* hard rss 10000
#@student hard nproc 20
#@faculty soft nproc 20
#@faculty hard nproc 50
#ftp hard nproc 0
#@student - maxlogins 4
# End of file
* soft nofile 65535
* hard nofile 65535
* soft nproc 65535
* hard nproc 65535
* soft memlock unlimited
* hard memlock unlimited
* soft nofile 65536
* hard nofile 65536
3.sysctl文件全部内容
[root@centos7 ~]# cat /etc/sysctl.conf
# sysctl settings are defined through files in
# /usr/lib/sysctl.d/, /run/sysctl.d/, and /etc/sysctl.d/.
#
# Vendors settings live in /usr/lib/sysctl.d/.
# To override a whole file, create a new file with the same in
# /etc/sysctl.d/ and put new settings there. To override
# only specific settings, add a file with a lexically later
# name in /etc/sysctl.d/ and put new settings there.
#
# For more information, see sysctl.conf(5) and sysctl.d(5).
vm.max_map_count=262144
