2022年山东省职业院校技能大赛高职组“网络系统管理”赛项模块C

Posted 2023-03-13

Client TASK

要求能访问所有服务器，用于测试应用环境

root@Client:~# hostname -f-->查看名称
  Client.Client.com
root@Client:~# vi /etc/hostname-->更改主机名
  Client
root@Client:~# vi /etc/hosts-->更改权限域名

​ 127.0.0.1 localhost ​ 172.16.100.1 ​​Client.Client.com​​ Client-->更改前 ​ 172.16.100.1 Client Client-->更改后

root@Client:~# reboot-->重启查看
root@Client:~# hostname -f-->查看名称
root@Client:~# ip addr show | grep inet && ip route-->查看IP地址

inet 127.0.0.1/8 scope host
  inet6 ::1/128 scope host
  inet 172.16.100.1/24 brd 172.16.100.266 scope global ens33
  inet6 fe80::20c:29ff:fe08:ccf9/64 scope link
default via 172.16.100.100 dev ens33 onlink
172.16.100.0/24 dev ens33 proto kernel scope link src 172.16.100.1
root@Client:~# vim /etc/network/interfaces-->编辑network

先对dns文件进行注释

# This file describes the network interfaces available in your system
# and how to activate them.For more information,see interfaces(5).

source /etc/network/interfaces.d/*

# The loopback network interface
auto 10
iface 10 inet loopback

# The primary network interface
allow-hotplug ens33
iface ens33 inet static
    address 10.10.100.1/24-->IP地址更改处
    address 10.10.100.254-->网关更改处
    # dns-* options are implemented by the resolvconf package,if installed
    # dns-nameservers 172.16.100.100
    # dns-search Client.com

root@Client:~# systemctl restart networking.service-->重启网卡
root@Client:~# ip addr show | grep inet && ip route-->查看IP地址

请为该主机安装支持GNOME桌面环境

root@Client:~# yum groupinstall "GNOME Desktop" "Graphical Administration Tools" -y-->按装GNOME桌面环境
root@Client:~# systemctl set-default graphical.target-->开机启动图形化界面
root@Client:~# reboot-->重启

调整显示分辨率至1280*768

settings-devices-displays-resolution 1280*768

测试DHCP，该主机网卡IPv4地址为自动获取

root@Client:~# yum install -y dhcp-->安装dhcp
root@Client:~# vim /etc/dhcp/dhcpd.conf-->查看可进入选项
root@Client:~# vim /usr/share/doc/dhcp*/dhcpd.conf.example-->进入并修改

:set nu-->显示行数
49 subnet 10.10.100.0 network 255.255.255.0 
50 range 10.10.100.1 10.10.100.254;
51 option domain-name-servers 10.10.100.1;
52 option domain-name "www.Clent.com";-->记得更改
53 option routers 10.10.100.100;-->网关

root@Client:~# systemctl restart dhcpd-->重启dhcp，不报错即成功
root@Client:~# systemctl enable dhcpd-->启动dhcp
root@Client:~# firewall-cmd --permanent --add-service=dhcp-->开启dhcp服务端口
root@Client:~# firewall-cmd --reload
root@Client:~# firewall-cmd --list-all

进行验证检查

root@Client:~# nmtui
编辑连接-编辑-IPv4配置：自动，地址：移除-启用连接-ens先停用后激活
root@Client:~# ifconfig ens33
root@Client:~# ip route
root@Client:~# nslookup
>server

测试dns，安装dnsutils、dig命令行工具

root@Client:~# yum install -y bind-utils bind-->安装dig
root@Client:~# dig www.163.com-->测试dig

安装SSH

一.安装net-tools

su root

yum install -y net-tools

下载之后就可以使用ifconfig了，中间遇到询问就一路Y或者yes之类就可。

二.安装ssh服务

yum install -y openssh-server

三.配置-依次输入。

sudo systemctl start sshd
sudo systemctl status sshd
sudo systemctl enable sshd

看到这个active（running）就基本成功了