Linux初始化配置——RHEL7.9、9.3环境部署

目录

一、环境搭建

 1. 新建虚拟机

二、环境部署

 1. RHEL9.3

 2. 克隆RHEL9.3

 3. RHEL7.9

---

一、环境搭建

 1. 新建虚拟机

  1）具体步骤请见煮波之前的Linux文章，7.9、9.3都一样哦

  2）两个虚拟机内存都设为100G

  3）注意：9.3配置分区时可能会出现如下报错

• 可先将9.3虚拟机关机，右击选择 “设置”===>“选项”===>“高级”===>选择 “BIOS”即可

• 自定义分区

二、环境部署

 1. RHEL9.3

• 配置仓库

[root@localhost ~]# cd /etc/yum.repos.d/    # 上传base.repo
[root@localhost yum.repos.d]# cat base.repo
[baseos]
name=baseos
baseurl=file:///media/BaseOS
gpgcheck=0
[App]
name=app
baseurl=file:///media/AppStream
gpgcheck=0[root@loclhost yum.repos.d]# vi /etc/rc.local
末行添加如下内容：
mount /dev/sr0  /media[root@loclhost yum.repos.d]#[root@loclhost yum.repos.d]# grep mount /etc/rc.d/rc.local   # 查看[root@loclhost yum.repos.d]# chmod +x /etc/rc.d/rc.local    # 赋权
[root@loclhost yum.repos.d]# cat /etc/rc.d/rc.local    #若不显示可能光盘未挂载[root@loclhost yum.repos.d]# yum install vim bash-completion net-tools -y

• 配置网络

[root@localhost ~]# vim /usr/local/bin/config_net.sh
添加如下内容：
#!/bin/bash
if [ "$#" -lt 3 ];thenecho -e "Usage: $0  interface-name connection-name ipv4address
Usage: $0  interface-name connection-name ipv4address ipv4gateway"exit 1
fi
interface=$1
conname=$2
ipaddress=$3
gateway=$4
dns=114.114.114.114
nmcli connection delete  $conname &> /dev/null
if  [ -n "$gateway"  ];thennmcli connection add   type ethernet  con-name  $conname  ifname  $interface  ipv4.method  manual  ipv4.addresses  $ipaddress ipv4.gateway $gateway ipv4.dns $dns   autoconnect  yes
elsenmcli connection add   type ethernet  con-name  $conname  ifname  $interface  ipv4.method  manual  ipv4.addresses  $ipaddress autoconnect  yes
fi
nmcli connection up $conname[root@localhost ~]# chmod +x /usr/local/bin/config_net.sh   # 赋权[root@localhost ~]# config_net.sh ens160 ens160-static 192.168.248.133/24 192.168.248.2

• 安全软件

[root@localhost ~]# systemctl disable --now firewalld
[root@localhost ~]# setenforce 0
[root@localhost ~]# sed -i 's/^SELINUX=.*/SELINUX=disabled/' /etc/selinux/config

• 修改主机名

[root@localhost ~]# hostnamectl set-hostname rhel93
[root@localhost ~]# reboot    # 重启

• 做快照

 2. 克隆RHEL9.3

• 修改IP、名称、做快照

[root@rhel93 ~]# hostnamectl  set-hostname  mysql
[root@rhel93 ~]# reboot   

 3. RHEL7.9

• 完整的初始化脚本

[root@localhost ~]# vi /root/initial.sh
#!/bin/bash
#######################1.install pkg
cat > /etc/yum.repos.d/base7-9.repo << EOF
[baseos]
name=baseos
baseurl=file:///media/
gpgcheck=0
EOF
echo "mount /dev/sr0  /media" >> /etc/rc.d/rc.local
chmod +x /etc/rc.d/rc.local
/etc/rc.d/rc.local
yum install vim  bash-completion net-tools -y
####################3.firewalld and selinux
systemctl disable  --now firewalld
setenforce  0
sed -i 's/^SELINUX=.*/SELINUX=disabled/' /etc/selinux/config[root@localhost ~]# chmod +x /root/initial.sh
[root@localhost ~]# /root/initial.sh[root@localhost ~]# vim /usr/local/bin/config_net.sh
#!/bin/bash
if [ "$#" -lt 3 ];thenecho -e "Usage: $0  interface-name connection-name ipv4address
Usage: $0  interface-name connection-name ipv4address ipv4gateway"exit 1
fi
interface=$1
conname=$2
ipaddress=$3
gateway=$4
dns=114.114.114.114
nmcli connection delete  $conname &> /dev/null
if  [ -n "$gateway"  ];thennmcli connection add   type ethernet  con-name  $conname  ifname  $interface  ipv4.method  manual  ipv4.addresses  $ipaddress ipv4.gateway $gateway ipv4.dns $dns   autoconnect  yes
elsenmcli connection add   type ethernet  con-name  $conname  ifname  $interface  ipv4.method  manual  ipv4.addresses  $ipaddress autoconnect  yes
fi
nmcli connection up $conname[root@localhost ~]# chmod +x /usr/local/bin/config_net.sh
[root@localhost ~]# config_net.sh ens32  ens32-static 192.168.248.135/24  192.168.248.2

• 修改主机名

[root@localhost ~]# hostnamectl set-hostname rhel79
[root@localhost ~]# reboot

• 做快照