init

sh
#!/bin/bash
#
#********************************************************************
#Author:            zhangwei
#QQ:                200957079
#Date:              2020-03-02
#FileName:          disk-lvm.sh
#URL:               http://vanblog.ztunan.top
#Description:       The test script
#Copyright (C):     2020 All rights reserved
#********************************************************************
color () {
    RES_COL=60
    MOVE_TO_COL="echo -en \\033[${RES_COL}G"
    SETCOLOR_SUCCESS="echo -en \\033[1;32m"
    SETCOLOR_FAILURE="echo -en \\033[1;31m"
    SETCOLOR_WARNING="echo -en \\033[1;33m"
    SETCOLOR_NORMAL="echo -en \E[0m"
    echo -n "$1" && $MOVE_TO_COL
    echo -n "["
    if [ $2 = "success" -o $2 = "0" ] ;then
        ${SETCOLOR_SUCCESS}
        echo -n $"  OK  "    
    elif [ $2 = "failure" -o $2 = "1"  ] ;then 
        ${SETCOLOR_FAILURE}
        echo -n $"FAILED"
    else
        ${SETCOLOR_WARNING}
        echo -n $"WARNING"
    fi
    ${SETCOLOR_NORMAL}
    echo -n "]"
    echo 
}

#关闭SELinux 
disable_selinux () {
    sed -i '/^SELINUX=/c SELINUX=disabled' /etc/selinux/config
}
#关闭防火墙
disable_firewall (){
    systemctl disable --now firewalld
    color "防火墙已经关闭" 0 
}
#支持光盘,/misc/cd对应就是光盘内容
set_cdrom () {
    yum -y install autofs
    systemctl enable --now autofs
}
#配置yum 仓库
yum_config (){
    mkdir /etc/yum.repos.d/backup
    mv  /etc/yum.repos.d/*.repo /etc/yum.repos.d/backup/
    cat > /etc/yum.repos.d/base.repo <<EOF
[BaseOS]
name=BaseOS
baseurl=https://mirror.tuna.tsinghua.edu.cn/centos/8/BaseOS/x86_64/os/
        https://mirrors.huaweicloud.com/centos/8/BaseOS/x86_64/os/
        https://mirrors.cloud.tencent.com/centos/8/BaseOS/x86_64/os/
        https://mirrors.aliyun.com/centos/8/BaseOS/x86_64/os/
gpgcheck=0

[AppStream]
name=AppStream
baseurl=https://mirror.tuna.tsinghua.edu.cn/centos/8/AppStream/x86_64/os/
        https://mirrors.huaweicloud.com/centos/8/AppStream/x86_64/os/
        https://mirrors.cloud.tencent.com/centos/8/AppStream/x86_64/os/
        https://mirrors.aliyun.com/centos/8/AppStream/x86_64/os/
gpgcheck=0


[epel]
name=EPEL
baseurl=https://mirror.tuna.tsinghua.edu.cn/epel/\$releasever/Everything/\$basearch
        https://mirrors.cloud.tencent.com/epel/\$releasever/Everything/\$basearch
        https://mirrors.huaweicloud.com/epel/\$releasever/Everything/\$basearch
        https://mirrors.aliyun.com/epel/\$releasever/Everything/\$basearch
gpgcheck=0
enabled=1

[extras]
name=extras
baseurl=https://mirror.tuna.tsinghua.edu.cn/centos/\$releasever/extras/\$basearch/os
        https://mirrors.cloud.tencent.com/centos/\$releasever/extras/\$basearch/os
        https://mirrors.huaweicloud.com/centos/\$releasever/extras/\$basearch/os
        https://mirrors.aliyun.com/centos/\$releasever/extras/\$basearch/os
gpgcheck=0
enabled=1

[PowerTools]
name=CentOS- - PowerTools - mirrors.aliyun.com
baseurl=https://mirror.tuna.tsinghua.edu.cn/centos/\$releasever/PowerTools/\$basearch/os/
        https://mirrors.cloud.tencent.com/centos/\$releasever/PowerTools/\$basearch/os/
        https://mirrors.huaweicloud.com/centos/\$releasever/PowerTools/\$basearch/os/
        https://mirrors.aliyun.com/centos/\$releasever/PowerTools/\$basearch/os/
gpgcheck=0
enabled=1
gpgkey=https://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-Official

EOF
    color "yum仓库配置成功" 0
}

#修改网卡名称
config_network () {
    sed -ri '/GRUB_CMDLINE_LINUX=/s#(.*)"$#\1 net.ifnames=0"#' /etc/default/grub
    grub2-mkconfig -o /boot/grub2/grub.cfg 
}
#最小化安装系统后，建议安装常用软件

install_packages () {
    yum -y install autofs vim-enhanced tcpdump autofs chrony lrzsz tree telnet ftp lftp redhat-lsb-core bash-completion net-tools postfix wget bzip2 zip unzip xz lsof mlocate man-pages rsync
}
set_env () {
    cat > /etc/profile.d/env.sh <<EOF
PS1='\[\e[1;36m\][\u@\h \W]\\$\[\e[0m\]'
export EDITOR=vim
export HISTTIMEFORMAT="%F %T "
EOF
}
#优化内核参数
set_kernel () {
        cat >> /etc/sysctl.conf <<EOF
#inotify 事件队列最大长度，如值太小会出现 Event Queue Overflow 错误
fs.inotify.max_queued_events=66666 
#可以监视的文件的总数量
fs.inotify.max_user_watches=100000 
EOF
}
sysctl -p &>/dev/null
disable_selinux
disable_firewall
set_cdrom
yum_config
config_network
install_packages
set_env
set_kernel
color "系统初始化已完成!" 0
sleep 2
reboot