去客户偶遇RH7，操作记录如下
修改主机名
直接编辑 /etc/hostname，立即生效
添加hosts解析 vim /etc/hosts
IP地址 主机名 主机域
172.24.17.x Tbcsvc Tbcsvc.localdomain
配置centos-yum源
可用的替换rpm脚本，版本参数不对，自行查找替换即可
#!/bin/sh
#删除原有yum包
rpm -aq|grep yum|xargs rpm -e --nodeps
#按照删除的查找对应的yum，依次下载
wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-3.4.3-125.el7.centos.noarch.rpm
wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm
wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-utils-1.1.31-29.el7.noarch.rpm
wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-updateonboot-1.1.31-29.el7.noarch.rpm
wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-29.el7.noarch.rpm
#存在互相依赖，一次性导入
rpm -ivh yum-*.rpm
添加repo，指向yum源，选择对应版本修改repo中的对应参数
[root@]# cat /etc/yum.repos.d/CentOS-Base.repo
[base]
name=CentOS-7 - Base
baseurl=http://mirrors.163.com/centos/7/os/$basearch/
gpgcheck=1
gpgkey=http://mirrors.163.com/centos/7/os/x86_64/RPM-GPG-KEY-CentOS-7
#released updates
[updates]
name=CentOS-7 - Updates
baseurl=http://mirrors.163.com/centos/7/updates/$basearch/
gpgcheck=1
gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7
#packages used/produced in the build but not released
[addons]
name=CentOS-7 - Addons
baseurl=http://mirrors.163.com/centos/7/os/$basearch/
#baseurl=http://mirrors.163.com/centos/7/addons/$basearch/
gpgcheck=1
#gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7
#additional packages that may be useful
[extras]
name=CentOS-7 - Extras
baseurl=http://mirrors.163.com/centos/7/extras/$basearch/
gpgcheck=1
gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7
#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-7 - Plus
baseurl=http://mirrors.163.com/centos/7/centosplus/$basearch/
gpgcheck=1
enabled=0
关闭防火墙
查看防火墙状态。
#systemctl status firewalld
临时关闭防火墙命令。重启电脑后，防火墙自动起来。
systemctl stop firewalld
永久关闭防火墙命令。重启后，防火墙不会自动启动。
systemctl disable firewalld
打开防火墙命令。
systemctl enable firewalld