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mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
yum clean all
yum makecache
yum clean all
yum makecache
安装扩展仓库
yum install epel-release
更换阿里云epel扩展仓库点此传送门
清除缓存目录下的软件包
yum clean all
清空缓存
yum makecache
dhclient # 开启DHCP,自动获取ip,此时可以上网,但关机后会恢复
yum install net-tools # 安装网络基本工具
traceroute 8.8.8.8 # 获取网关ip,gateway(192.168.1.1),ctrl+C退出
ipconfig # 输出如下
/etc/sysconfig/network-scripts/ifcfg-网卡编号
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=dhcp
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=eth0
UUID="每台电脑不一样,别动"
DEVICE=eth0
ONBOOT=no # 开机启动:若不固定ip,也记得设成yes
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static # 静态ip模式
IPADDR=192.168.1.111 # ip
NETMASK=255.255.255.0 # 子网掩码
GATEWAY=192.168.1.1 # 网关ip
DNS1=8.8.8.8 # 路由解析,会被同步到/etc/resolv.conf里
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=eth0
UUID="每台电脑不一样,别动"
DEVICE=eth0
ONBOOT=yes # 开机启动
:wq # 修改后保存退出
service network restart # 重启网络服务
ping baidu.com # 测试网络及DNS解析是否正常,Ctrl+C退出
ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa): # 提示密钥保存路径
Enter passphrase (empty for no passphrase): # 密钥文件是否设置密码,此处为空
Enter same passphrase again:
Your identification has been saved in /root/.ssh/id_rsa. # 私钥保存位置
Your public key has been saved in /root/.ssh/id_rsa.pub. # 公钥保存位置
pem私钥:部分ssh客户端软件需要pem格式的私钥,可以命令转换
ssh-keygen -p -m PEM -f id_rsa
,pem格式的id_rsa会替换原id_rsa
authorized_keys
chmod 700 /root/.ssh
文件chmod 600 /root/.ssh/authorized_keys
/etc/ssh/ssh_config
:当前电脑作为客户端
SSH连接远程服务器,受此文件约束/etc/ssh/sshd_config
:当前电脑作为服务端
接收SSH连接,受此文件约束RSAAuthentication yes # 去掉#号注释,开启RSA验证
PubkeyAuthentication yes # 去掉#号注释,开启公钥验证
PasswordAuthentication no # 关闭密码登录,注释掉没用,建议测试通过后再关闭
yum install dhclient
,其会生成/etc/sysconfig/network-scripts文件夹
yum install systemd
D-Bus
connection: Operation not permitted
以特权模式运行:
docker run -d --name centos7 --privileged=true centos:7 /usr/sbin/init
,docker exec -it centos7 /bin/bash
判断是否有/etc/ssh文件夹,如果没有
yum install openssh-server -y
,systemctl restart sshd
,或者重启下
yum install net-tools -y
yum install wget
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