综合架构_前优化

#把以下内容vi到123.sh里 sh 123.sh即可运行
#1优化yum源为阿里云镜像源
curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
curl -o /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
#下载常用软件
yum install -y vim wget net-tools telnet bash-completion bash-completion-extras tree lrzsz htop ntpdate

#关闭防火墙
systemctl stop firewalld.service
systemctl disable firewalld.service

#临时及永久关闭selinux
setenforce 0
sed -i 's#SELINUX=enforcing#SELINUX=disabled#g'

#高亮显示命令行(可选)
echo "
export PS1='\[\e[32;1m\][\[\e[0m\]\[\e[35;1m\]\u\[\e[0m\]\[\e[31;1m\]@\[\e[0m\]\[\e[36;1m\]\h\[\e[0m\] \W\[\e[32;1m\]]\[\e[0m\]\[\e[34;1m\]\$\[\e[0m\]' " >>/etc/profile

#关闭邮件服务器(可选)
systemctl stop postfix
systemctl disable postfix

#主机解析(可选)
cat >>/etc/hosts<<EOF
172.16.1.81 firewalld
172.16.1.5 lb01
172.16.1.6 lb02
172.16.1.7 web01
172.16.1.8 web02
172.16.1.9 web03
172.16.1.51 db01
172.16.1.31 nfs01
172.16.1.41 backup
172.16.1.61 m01
172.16.1.71 zabbix
EOF

#定时更新时间(可选)
echo "#定时更新时间
*/5 * * * * /usr/sbin/ntpdate ntp1.aliyun.com &> dev/null " >>/var/spool/cron/root

#ssh优化(可选)
sed -i 's#GSSAPIAuthentication yes#GSSAPIAuthentication no#g' /etc/ssh/sshd_config
sed -i 's#\#UseDNS yes#UseDNS no#g' /etc/ssh/sshd_config

#删除UUID HWADDR(只是删除现有网卡UUID)
sed -ri '/UUID|HWADDR/d' /etc/sysconfig/network-scripts/ifcfg-eth[01]

#一键更改主机名在其它脚本(此功能暂不开放)
#mkdir -p /server/scripts
#cat >>/etc/hosts<<EOF
#"#!/bin/bash
#name=\$1
#ip=\$2
#
##参数限制配置
#if [ $# -ne 2 ]
#then
#echo '你没有输入两个参数'
#exit
#fi
#
##修改主机名称
#hostnamectl set-hostname $name
#
##修改网卡地址
#sed -i "s#200#$ip#g" /etc/sysconfig/network-scripts/ifcfg-eth[01] " > /server/scripts/init.sh
#EOF