Centos7开荒脚本


#!/bin/sh
# 更新系统

function update_system() {
    yum update -y
}

# 更换阿里云源
function replace_yum() {
    mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.bak
    curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
    yum clean all && yum makecache
}

# 禁用防火墙
function disable_firewall() {
    systemctl stop firewalld.service
    systemctl disable firewalld.service
}

# 禁用SELinux
function disable_selinux() {
    sed -i 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config
    setenforce 0
}

# 安装常用软件
function install_packages() {
    yum install -y vim net-tools wget curl lsof
}

# 主菜单
while true; do
    echo "1. 执行yum update"
    echo "2. 更换阿里云源"
    echo "3. 禁用防火墙"
    echo "4. 禁用SELinux"
    echo "5. 安装常用软件"
    echo "6. 执行全部"
    echo "7. 退出"
    read -p "请输入选项：" option
    case $option in
        1 ) update_system;;
        2 ) replace_yum;;
        3 ) disable_firewall;;
        4 ) disable_selinux;;
        5 ) install_packages;;
        6 ) update_system && replace_yum && disable_firewall && disable_selinux && install_packages;;
        7 ) exit;;
        * ) echo "请输入正确的选项";;
    esac
done



#!/bin/bash

# 设置时区并同步时间
ln -s /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
ntpd -q &

# 禁用selinux
sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config

# 关闭防火墙
systemctl stop firewalld
systemctl disable firewalld

# 历史命令显示操作时间
echo 'export HISTTIMEFORMAT="%F %T `whoami` "' >> /etc/bashrc

# SSH超时时间
echo "export TMOUT=600" >> /etc/profile

# 禁止root远程登录
sed -i 's/#PermitRootLogin yes/PermitRootLogin no/g' /etc/ssh/sshd_config

# 禁止定时任务向发送邮件
sed -i 's/^MAILTO=root/MAILTO=""/g' /etc/crontab

# 设置最大打开文件数
cat <<EOF >> /etc/security/limits.conf
* soft nofile 65535
* hard nofile 65535
EOF

# 系统内核优化
cat <<EOF >> /etc/sysctl.conf
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_max_tw_buckets = 20480
net.ipv4.tcp_max_syn_backlog = 20480
net.core.netdev_max_backlog = 262144
net.ipv4.tcp_fin_timeout = 20
EOF

# 减少SWAP使用
echo "vm.swappiness = 0" >> /etc/sysctl.conf
sysctl -p

# 安装系统性能分析工具及其他
yum install -y gcc make autoconf vim sysstat net-tools iostat iftop

# 获取MQ堆积量
QUEUE_NAME="example_queue"
QUEUE_DEPTH=$(echo "dis qstatus($QUEUE_NAME) queue" | runmqsc | grep "CURDEPTH" | awk '{print $3}')
echo "MQ堆积量：$QUEUE_DEPTH"



#!/usr/bin/bash
echo "欢迎使用初始化jio本"
read -p "是否安装epel源？Y/N:" an1
if [ $an1 = 'y' ] || [ $an1 = 'Y' ];then
#安装epel源
  echo "正在安装epel源，请耐心等待..."
  yum -y install epel-release &> /dev/null
else
  break
fi
{
read -p "是否需要配置base源?Y/N:" an2
if [ $an2 = 'y' ] || [ $an2 = 'Y' ];then
#配置yum源
/bin/cp  /etc/yum.repos.d/CentOS-Base.repo  /etc/yum.repos.d/CentOS-Base.repo.bak
sed -ri "s/\(mirrorlist=\)/#1/g" /etc/yum.repos.d/CentOS-Base.repo
sed -ri "s/#\(baseurl=\)/1/g" /etc/yum.repos.d/CentOS-Base.repo
else
  break
fi
}
{
read -p "是否需要配置epel源？Y/N:" an3
if [ $an3 = 'y' ] || [ $an3 = 'Y' ];then
  /bin/cp /etc/yum.repos.d/epel.repo  /etc/yum.repos.d/epel.repo.bak
  sed -ri "s/\(mirrorlist=\)/#1/g" /etc/yum.repos.d/epel.repo
  sed -ri "s/.*\(baseurl=\)/1/g" /etc/yum.repos.d/epel.repo
else
  break
fi
}
read -p "是否清楚缓存并建立新的缓存？Y/N:" an4
if [ $an4 = 'y' ] || [ $an4 = 'Y' ];then
  echo "正在清理缓存并建立新的缓存，请稍后..."
  #清除缓存
  yum clean all  &> /dev/null
  #新建缓存
  yum makecache &> /dev/null
  if [ $? -eq 0 ];then
    echo "缓存建立完成！"
  else 
    echo "缓存建立失败，请检查网络或者日志文件！"
  fi
else
  break
fi
#关闭防火墙
systemctl stop firewalld  &> /dev/null
systemctl disable firewalld &> /dev/null

#关闭selinux
setenforce 0 &> /dev/null
sed -ri 's/\(SELINUX=\)enforcing/\1disabled' /etc/selinux/config &> /dev/null
yum -y install vim wget lsfo   &> /dev/null
if [ $? -eq 0 ];then
    echo "常用工具安装完成,祝您使用愉快！"
else
    echo "常用工具安装失败，请检查网络或日志"
fi