RedHat8配置DHCP

RedHat 8配置DHCP

环境：redhat8-DHCP（服务器）、windows server2008（客户端）

1. redhat配置静态IP地址：

   vim /etc/sysconfig/network-scripts/ifcfg-ens160
   TYPE="Ethernet"
   PROXY_METHOD="none"
   BROWSER_ONLY="no"
   ONBOOT="YES"
   BOOTPROTO="none"
   IPADDR=192.168.0.1
   METMASK=255.255.255.0
   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="ens160"
   UUID="dbba5a7e-bd62-438b-a188-68cb83d46b95"
   DEVICE="ens160"
   ONBOOT="yes"
   IPV6_PRIVACY="no"
   

   [root@localhost ~]# systemctl restart NetworkManager
   [root@localhost ~]# ifconfig
   ens160: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
           inet 192.168.0.1  netmask 255.255.255.0  broadcast 192.168.0.255
           inet6 fe80::54eb:b207:4fc8:7d6c  prefixlen 64  scopeid 0x20<link>
           ether 00:0c:29:cb:6e:4b  txqueuelen 1000  (Ethernet)
           RX packets 687  bytes 53516 (52.2 KiB)
           RX errors 0  dropped 0  overruns 0  frame 0
           TX packets 192  bytes 20560 (20.0 KiB)
           TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
   

2. 把镜像接入光驱，用于安装dhcpd安装包
3. df查看光驱挂在位置

   [root@localhost ~]# df
   文件系统                 1K-块    已用     可用 已用% 挂载点
   devtmpfs                892204       0   892204    0% /dev
   tmpfs                   921340       0   921340    0% /dev/shm
   tmpfs                   921340    9908   911432    2% /run
   tmpfs                   921340       0   921340    0% /sys/fs/cgroup
   /dev/mapper/rhel-root 17811456 4647752 13163704   27% /
   /dev/nvme0n1p1         1038336  234392   803944   23% /boot
   tmpfs                   184268    1168   183100    1% /run/user/42
   tmpfs                   184268    4644   179624    3% /run/user/0
   /dev/sr0               8238560 8238560        0  100% /run/media/root/RHEL-8-2-0-BaseOS-x86_64
   

4. 查找dhcp安装包

   [root@localhost ~]# cd /run/media/root/RHEL-8-2-0-BaseOS-x86_64/BaseOS/Packages/
   [root@localhost Packages]# ls dhcp-*
   dhcp-client-4.3.6-40.el8.x86_64.rpm  dhcp-libs-4.3.6-40.el8.x86_64.rpm
   dhcp-common-4.3.6-40.el8.noarch.rpm  dhcp-relay-4.3.6-40.el8.x86_64.rpm
   dhcp-libs-4.3.6-40.el8.i686.rpm      dhcp-server-4.3.6-40.el8.x86_64.rpm
   

5. 安装dhcp

   [root@localhost Packages]# rpm -ivh dhcp-server-4.3.6-40.el8.x86_64.rpm 
   警告：dhcp-server-4.3.6-40.el8.x86_64.rpm: 头V3 RSA/SHA256 Signature, 密钥 ID fd431d51: NOKEY
   Verifying...                          ################################# [100%]
   准备中...                          ################################# [100%]
   正在升级/安装...
      1:dhcp-server-12:4.3.6-40.el8      ################################# [100%]
   

6. 配置dhcp文件

   [root@localhost ~]# cd /etc/dhcp/
   [root@localhost dhcp]# ls
   dhclient.conf  dhclient.d  dhcpd6.conf  dhcpd.conf
   [root@localhost dhcp]# cp /usr/share/doc/dhcp-server/dhcpd.conf.example dhcpd.conf 
   cp：是否覆盖'dhcpd.conf'？ yes
   [root@localhost dhcp]# vim dhcpd.conf
   

   dhcpd.conf
   #
   # Sample configuration file for ISC dhcpd
   #
   
   # option definitions common to all supported networks...
   option domain-name "example.org";
   option domain-name-servers 114.114.114.114;
   
   default-lease-time 600;
   max-lease-time 7200;
   
   # Use this to enble / disable dynamic dns updates globally.
   #ddns-update-style none;
   
   # If this DHCP server is the official DHCP server for the local
   # network, the authoritative directive should be uncommented.
   #authoritative;
   
   # Use this to send dhcp log messages to a different log file (you also
   # have to hack syslog.conf to complete the redirection).
   log-facility local7;
   
   # This is a very basic subnet declaration.
   
   subnet 192.168.0.0 netmask 255.255.255.0 {           ##设置网段、掩码
     range dynamic-bootp 192.168.0.100 192.168.0.200;   ##分配IP地址
     option routers 192.168.0.1;                        ##网关
   }
   

7. 重启服务

   [root@localhost dhcp]# systemctl restart dhcpd
   

8. 测试dhcp服务器

   在windows server 2008上查看是否生效

   

   在Redhat8中查看IP分配情况