centos7基础操作
一、更改镜像源
1、安装wget
1 yum install -y wget
2、下载阿里云镜像源,并替换为系统默认镜像源
1 wget -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
3、清除缓存、更新读取
1 yum clean all 2 yum makecache
二、更改IP设置
1、修改ip配置
1 #进入文件夹查看网卡情况 2 cd /etc/sysconfig/network-scripts 3 ls 4 5 6 #修改配置 7 vi ifcfg-ens33
2、添加默认网关
1 #打开配置文件 2 vi /etc/sysconfig/network 3 4 5 #写入网关地址: 6 GATEWAY=192.168.1.1
3、重启刷新网络配置
#关闭NetworkManager服务 systemctl disable NetworkManager #重启网络 systemctl restart network #或 service network restart
4、安装net-tools,以使用网络命令
1 yum install net-tools
5、ipv6相关
5.1关闭ipv6
#编辑/etc/sysctl.conf配置,增加/修改 net.ipv6.conf.all.disable_ipv6=1 net.ipv6.conf.default.disable_ipv6=1 net.ipv6.conf.lo.disable_ipv6=1 #编辑/etc/sysconfig/network配置,增加/修改 NETWORKING_IPV6=no #编辑/etc/sysconfig/network-scripts/ifcfg-ens33,增加/修改 IPV6INIT=no
5.2开启ipv6,逆关闭操作即可
#编辑/etc/sysctl.conf配置,增加/修改 net.ipv6.conf.all.disable_ipv6=0 net.ipv6.conf.default.disable_ipv6=0 net.ipv6.conf.lo.disable_ipv6=0 #编辑/etc/sysconfig/network配置,增加/修改 NETWORKING_IPV6=yes IPV6_DEFAULTDEV=eth0 #编辑/etc/sysconfig/network-scripts/ifcfg-ens33,增加/修改 IPV6INIT=yes IPV6_DEFROUTE=yes IPV6_PEERDNS=yes IPV6_PEERROUTES=yes IPV6_FAILURE_FATAL=no DHCPV6C=yes IPV6_ADDR_GEN_MODE=stable-privacy #如需手动填上公网ipv6地址,则注释【DHCPV6C=yes】后,改为 IPV6ADDR=【举例】2409:8057:2000:6::8
三、防火墙相关
1 #临时关停防火墙 2 systemctl stop firewalld.service 3 4 #永久关停防火墙 5 systemctl disable firewalld.service 6 7 #手动开启防火墙 8 systemctl start firewalld.service 9 10 #永久启用防火墙 11 systemctl enable firewalld.service 12 13 #查看防火墙状态 14 systemctl status firewalld.service