装系统太多，这种工具还是有必要的，自己视情况修改和调整吧
里面我牵涉到的密码，请自行修改为自己的设置

#!/bin/bash

if [[ "$(whoami)" != "root" ]]; then
    echo "请切换root用户 ." >&2
    exit 1
fi
echo "适用CENTOS 7.6+"
echo -e "\033[31m 修改selinux 关闭防火墙 系统参数等，有需要可自己微调 5秒后执行 \033[0m"
#sleep 1
#echo "1秒"
#sleep 1
#echo "2秒"
#sleep 1
#echo "3秒"
#sleep 1
#echo "4秒"
#sleep 1
echo "开始执行中请勿操作，结束后会有提示"

#下载yumepel源 ,获取阿里源
yum_config(){
    yum install wget epel-release -y
    cd /etc/yum.repos.d/ && mkdir bak && mv -f *.repo bak/
    wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
    wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
    yum clean all && yum makecache
    #选装，如需自行调整 yum -y install iotop iftop net-tools lrzsz gcc gcc-c++ make cmake libxml2-devel openssl-devel curl curl-devel unzip sudo ntp libaio-devel wget vim ncurses-devel autoconf automake zlib-devel  python-devel bash-completion
}

#防火墙关闭
iptables_config(){
    systemctl stop firewalld.service
    systemctl disable firewalld.service
    systemctl stop iptables
    systemctl disable iptables
}

#修改默认端口
ssh2_config(){
    sed -i "s/Port 22$/Port 2222/g" /etc/ssh/sshd_config
    systemctl restart sshd.service
}

#selinux关闭 时区 时间服务器chrony(需要自己删除注释)
system_config(){
    sed -i "s/SELINUX=enforcing/SELINUX=disabled/g" /etc/selinux/config
    #timedatectl set-local-rtc 1 && timedatectl set-timezone Asia/Shanghai
    #yum -y install chrony && systemctl start chronyd.service && systemctl enable chronyd.service
}

#打开文件限制
ulimit_config(){
    echo "ulimit -SHn 102400" >> /etc/rc.local
    cat >> /etc/security/limits.conf << EOF
*           soft   nofile       102400
*           hard   nofile       102400
*           soft   nproc        102400
*           hard   nproc        102400
EOF
}

#mac下打开报
lang_config(){
     cat >>  /etc/locale.conf << EOF
LC_ALL=en_US.utf8
LC_CTYPE=en_US.utf8
EOF
}

#安装一些常用yum包
yum_pkg_config(){
    yum -y install lshw pciutils gdisk install bash-completion zip unzip bzip2 tree tmpwatch pinfo man-pages install nano vim-enhanced tmux screen install net-tools psmisclsof sysstat install yum-plugin-security yum-utils createrepo install get wget curl eliks lynx lftp mailx mutt reync  install libaio make cmake gcc-c++ gcc zib zlib-devel open openssl-devel pcre pcre-devel
}

#时区同步配置，主要用于非国内服务器
ntp_config(){
    yum -y install ntp
    systemctl enable ntpd
    service ntpd restart
    timedatectl set-timezone Asia/Shanghai
    #上海，北京时间
    #ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
    #悉尼
    #ln -sf /usr/share/zoneinfo/Australia/Sydney  /etc/localtime
}

#安装和自动配置redis
redis_config(){
    yum install -y epel-release yum-utils
    yum install -y http://rpms.remirepo.net/enterprise/remi-release-7.rpm
    yum-config-manager --enable remi
    yum install -y redis
    chkconfig redis on
    sed -i 's/bind 127.0.0.1/bind 0.0.0.0/g' /etc/redis.conf
    sed -i 's/# requirepass foobared/requirepass xxxxx/g' /etc/redis.conf
    systemctl start redis
}

#jdk
jdk_config(){
    yum install -y java-1.8.0-openjdk-devel.x86_64
}

main(){
    yum_config &>/dev/mull
    iptables_config  &>/dev/mull
    system_config  &>/dev/mull
    ulimit_config  &>/dev/mull
    #lang_config  &>/dev/mull
    yum_pkg_config &>/dev/mull
    #ntp_config &>/dev/mull
    redis_config &>/dev/mull
    jdk_config &>/dev/mull
    echo "初始化完成！"
}
main

mysql8自动安装

#!/bin/bash
yum -y install expect
rpm -Uvh https://dev.mysql.com/get/mysql80-community-release-el7-1.noarch.rpm
yum --enablerepo=mysql80-community install -y mysql-community-server --nogpgcheck
cat >>  /etc/my.cnf << EOF
lower_case_table_names=1
default-authentication-plugin=mysql_native_password
max_connections=5000
wait_timeout = 600
interactive_timeout = 600
back_log=128
max_user_connections= 600
max_connect_errors = 2000
character-set-server = utf8mb4
sql_mode=STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION
EOF
mysqld --initialize --lower-case-table-names=1 --user=mysql --console
service mysqld start
pwd=$(grep 'temporary password' /var/log/mysqld.log |grep -P '[^\s]+$' -o)
expect << EOF
set timeout 1
spawn mysql -u root -p
expect "*password:"
send "$pwd\r"
expect 'mysql>*'
send "ALTER USER 'root'@'localhost' IDENTIFIED BY 'xxx';\r"
expect 'mysql>*'
send "flush privileges;\r"
expect 'mysql>*'
send "create USER 'root'@'%' IDENTIFIED BY 'xxx' PASSWORD EXPIRE NEVER;\r"
expect 'mysql>*'
send "GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION;\r"
expect 'mysql>*'
send "flush privileges;\r"
expect 'mysql>*'
send "quit\r";
interact
EOF

nginx自动安装

!/bin/bash
rpm -Uvh http://nginx.org/packages/centos/7/noarch/RPMS/nginx-release-centos-7-0.el7.ngx.noarch.rpm
yum install -y nginx
systemctl enable nginx.service
cp /etc/nginx/nginx.conf /etc/nginx/nginx.conf.bk
> /etc/nginx/nginx.conf
cat /etc/nginx/nginx.conf << EOF
user  nginx;
worker_processes  auto;

error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;

worker_rlimit_nofile 65536;
events {
    worker_connections  1024;
}

http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  /var/log/nginx/access.log  main;

    sendfile            on;
    tcp_nopush          on;
    tcp_nodelay         on;
    server_tokens       off;
    keepalive_timeout   65;
    types_hash_max_size 2048;
    client_max_body_size 10m;

    gzip on;
    gzip_min_length 1k;
    gzip_buffers 4 32k;
    gzip_http_version 1.1;
    gzip_comp_level 2;
    gzip_types text/plain application/x-javascript application/javascript text/css application/xml text/javascript application/x-httpd-php image/jpeg image/gif image/png application/vnd.ms-fontobject font/ttf application/json font/opentype font/x-woff image/svg+xml;
    gzip_vary on;
    gzip_disable "MSIE [1-6]\.";

    proxy_headers_hash_max_size 51200;
    proxy_headers_hash_bucket_size 6400;

    include conf.d/*.conf;
}
EOF

service nginx start