1. #!/bin/bash
    3. #################### 插件一：字体 ######################
    4. ### 设置文件输出警告色，info/warning/error "你要输出信息"
    5. ### 使用方法
    6. ### info "This is a info!"
    7. ### warnning "This is a warn"
    8. ### error "This is a error"
    9. function info(){
    10.     # 32 绿色字
    11.     ARGE=${1:-'没有传参'}
    12.     echo -e "\033[1;32mINFO: $ARGE\033[0m"
    13. }
    14. function warnning(){
    15.     # 33 黄色字
    16.     ARGE=${1:-'没有传参'}
    17.     echo -e "\033[1;33mWARN: $ARGE\033[0m"
    18. }
    19. function error(){
    20.     # 31 红色字
    21.     ARGE=${1:-'没有传参'}
    22.     echo -e "\033[1;5;41;37mERROR: $ARGE\033[0m"
    23. }
    26. init_system(){
    27.     info "1. 关闭seLinux，firewalld"
    28.     setenforce 0
    29.     sed -i '/SELINUX/{s/enforcing/disabled/}' /etc/selinux/config
    30.     systemctl disable --now firewalld &>/dev/null
    32.     info "2. 配置网络yum源"
    33.     if [ ! -f /etc/yum.repos.d/epel.repo &>/dev/null ] ;then 
    34.         rm -rf /etc/yum.repos.d/*
    35.         curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo &>/dev/null
    36.         curl -o /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo &>/dev/null
    37.         yum clean all &>/dev/null && yum makecache &>/dev/null
    38.     fi
    40.     info "3. 安装需要使用的软件,可能时间较长请等待....."
    41.     yum install -y gcc make autoconf vim sysstat net-tools iostat iftop iotop lrzsz epel-release &>/dev/null
    42.     yum install -y bash-completion nmap dos2unix openssl openssh bash iproute wget tree &>/dev/null
    45.     info "4. 设置文件最大访问量"
    46.     grep 'ulimit -SHn 102400' /etc/rc.local &>/dev/null   
    47.     if ! grep 'hard nproc 102400' /etc/security/limits.conf &>/dev/null ;then
    48.         ulimit -SHn 102400
    49.         echo "ulimit -SHn 102400"   >> /etc/rc.local
    50.         echo "* soft nofile 102400"  >> /etc/security/limits.conf
    51.         echo "* hard nofile 102400" >> /etc/security/limits.conf
    52.         echo "* soft nproc 102400"  >> /etc/security/limits.conf
    53.         echo "* hard nproc 102400" >> /etc/security/limits.conf
    54.     fi
    56.     info "5. 删除用不到的用户与组"
    57.     if cat /etc/passwd |awk -F':' '{print $1}' | grep games &>/dev/null ;then
    58.         userdel adm       &>/dev/null
    59.         userdel lp        &>/dev/null
    60.         userdel shutdown  &>/dev/null
    61.         userdel halt      &>/dev/null
    62.         userdel operator  &>/dev/null
    63.         groupdel games    &>/dev/null
    64.         userdel games     &>/dev/null
    66.     fi
    67.     info    "6. 关闭swap分区"
    68.     if ! cat /etc/sysctl.conf |grep 'vm.swappiness=0' &>/dev/null ;then
    69.         swapoff -a
    70.         sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab
    71.         rm -rf /var/swapfile
    72.         echo "vm.swappiness=0" >> /etc/sysctl.conf
    73.         sysctl -p
    74.         echo 0 > /proc/sys/vm/swappiness
    75.     fi
    77. }
    79. init_system