Share a simple version of Linux server initialization shell script

This shell script is primarily used to initialize the new Linux server system, including shutting down the IPV6 module, turning off the SELinux, allowing Vim to display colors, setting system language encoding, optimizing system services, kernel parameter optimization, and so on

This shell script is primarily used for initialization of newly installed Linux server systems, including:

Turn off the IPV6 module
Close SELinux
Let vim display color
Set System language encoding
Optimizing System Services
Kernel parameter optimization and so on.
Can be modified according to their actual situation, can be used in production environment. The original author is Netseek, I made a partial modification.

Copy Code code as follows:

#!/bin/sh


# desc:lsm03624 Modified by www.webnginx.com


#-------------------cut begin-------------------------------------------


#welcome


Cat << EOF


+--------------------------------------------------------------+


| = = = Welcome to Centos System init = = |


+--------------http://www.linuxtone.org------------------------+


+----------------------Author:netseek--------------------------+


EOF


#disable IPv6


Cat << EOF


+--------------------------------------------------------------+


| = = = Welcome to Disable IPV6 = = = |


+--------------------------------------------------------------+


EOF


echo "Alias net-pf-10 off" >>/etc/modprobe.conf


echo "Alias IPv6 off" >>/etc/modprobe.conf


/sbin/chkconfig--level ip6tables off


echo "IPv6 is disabled!"





#disable SELinux


sed-i '/selinux/s/enforcing/disabled/'/etc/selinux/config


echo "SELinux is disabled,you must reboot!"





#vim


sed-i "8 s/^/alias vi= ' vim '/"/ROOT/.BASHRC


echo ' syntax on ' >/ROOT/.VIMRC





#zh_cn


sed-i-E ' s/^lang=.*/lang= ' ZH_CN. UTF-8 "/'/etc/sysconfig/i18n


# Configure file Max to 52100


echo "* Soft nofile 52100


* Hard Nofile 52100 ">>/etc/security/limits.conf





#tunoff Services


#--------------------------------------------------------------------------------


Cat << EOF


+--------------------------------------------------------------+


| = = = Welcome to tunoff services = = |


+--------------------------------------------------------------+


EOF


#---------------------------------------------------------------------------------


for I in ' ls/etc/rc3.d/s* '


do


cursrv= ' echo $i |cut-c 15-'





Echo $CURSRV


Case $CURSRV in


Cpuspeed | Crond | Irqbalance | Microcode_ctl | mysqld | Network | Nginx | PHP-FPM | SendMail | sshd | syslog)


#这个启动的系统服务根据具体的应用情况设置, where network, sshd, and syslog are three system services that must be started!


echo "Base services, skip!"





*)


echo "Change $CURSRV to Off"


chkconfig--level 235 $CURSRV off


Service $CURSRV Stop





Esac


done





rm-rf/etc/sysctl.conf


echo "Net.ipv4.ip_forward = 0


Net.ipv4.conf.default.rp_filter = 1


net.ipv4.conf.default.accept_source_route = 0


KERNEL.SYSRQ = 0


kernel.core_uses_pid = 1


net.ipv4.tcp_syncookies = 1


KERNEL.MSGMNB = 65536


Kernel.msgmax = 65536


Kernel.shmmax = 68719476736


Kernel.shmall = 134217728


Net.ipv4.ip_local_port_range = 1024 65536


Net.core.rmem_max = 16777216


Net.core.wmem_max = 16777216


Net.ipv4.tcp_rmem = 4096 87380 16777216


Net.ipv4.tcp_wmem = 4096 65536 16777216


net.ipv4.tcp_fin_timeout = 3


net.ipv4.tcp_tw_recycle = 1


Net.core.netdev_max_backlog = 30000


Net.ipv4.tcp_no_metrics_save = 1


net.core.somaxconn = 262144


net.ipv4.tcp_syncookies = 0


Net.ipv4.tcp_max_orphans = 262144


Net.ipv4.tcp_max_syn_backlog = 262144


net.ipv4.tcp_synack_retries = 2


net.ipv4.tcp_syn_retries = 2


vm.swappiness = 6 ">>/etc/sysctl.conf


echo "optimizited kernel Configure was done!"