Simple Linux Server initialization Shell script

The Shell script is mainly used to initialize the new Linux server system, including:

It can be modified according to your actual situation and used in the production environment. The original author is NetSeek and I have made some modifications.

#! /Bin/sh # desc: lsm03624 modified by www.webnginx.com # ----------------- cut begin response # welcomecat <EOF + response + |== Welcome to Centos System init ==|+ -------------- http://www.linuxtone.org response ++ upload hoautr: netSeek -------------------------- + EOF # disable ipv6cat <EOF + Welcome + | === Welcome to Disable IPV6 ==|+ ------------------------------------------------------------------ + EOFecho "alias net-pf-10 off">/etc/modprobe. confecho "alias ipv6 off">/etc/modprobe. conf/sbin/chkconfig -- level 35 ip6tables offecho "ipv6 is disabled! "# Disable selinuxsed-I '/SELINUX/s/enforcing/disabled/'/etc/selinux/configecho" selinux is disabled, you must reboot! "# Vimsed-I" 8 s/^/alias vi = 'vim '/"/root /. bashrcecho 'syntax on'>/root /. vimrc # zh_cnsed-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 ==|+ response + EOF # response for I in 'ls/etc/rc3.d/S * 'docursrv = 'echo $ I | cut-c 15-'echo $ CURSRVcase $ CURSRV incpuspeed | crond | irqbalance | microcode_ctl | mysqld | network | nginx | php-fpm | sendmail | sshd | syslog) # This system service is set based on the specific application. 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 offservice $ CURSRV stop; esacdonerm-rf/etc/sysctl. confecho "net. ipv4.ip _ forward = 0net. ipv4.conf. default. rp_filter = 1net. ipv4.conf. default. accept_source_route = 0kernel. sysrq = 0kernel. core_uses_pid = 1net. ipv4.tcp _ syncookies = 1kernel. msgmnb = 65536kernel. msgmax = 65536kernel. shmmax = 68719476736kernel. shmall = 134217728net. ipv4.ip _ Local_port_range = 1024 65536net. core. rmem_max = 16777216net. core. wmem_max = 16777216net. ipv4.tcp _ rmem = 4096 87380 16777216net. ipv4.tcp _ wmem = 4096 65536 16777216net. ipv4.tcp _ fin_timeout = 3net. ipv4.tcp _ tw_recycle = 1net. core. netdev_max_backlog = 30000net. ipv4.tcp _ no_metrics_save = 1net. core. somaxconn = 262144net. ipv4.tcp _ syncookies = 0net. ipv4.tcp _ max_orphans = 262144net. ipv4.tcp _ max_syn_backlog = 262144net. ipv4.tcp _ synack_retries = 2net. ipv4.tcp _ syn_retries = 2vm. swappiness = 6 ">/etc/sysctl. confecho" optimizited kernel configure was done!"

Editor's note: This script can be used with other security scripts and optimization scripts.

Original article: http://www.linuxde.net/2011/12/3273.html