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这篇文章主要介绍如何实现简易版Linux服务器初始化Shell脚本,文中介绍的非常详细,具有一定的参考价值,感兴趣的小伙伴们一定要看完!
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该Shell脚本主要用于新安装Linux服务器系统的初始化工作,具体包括:
关闭IPv6模块
关闭SELinux
让vim显示颜色
设置系统语言编码
优化系统服务
内核参数优化等。
可以根据自己的实际情况修改,可用于生产环境。原作者是NetSeek,本人做了部分修改。
#!/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 35 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,其中network、sshd、syslog是三项必须要启动的系统服务! 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!"
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