使用Dnsmasq 部署GPXE 安装 Centos7

蔚落 2022-01-10 10:23 461阅读 0赞

#### 实验环境 1台Centos7.6的虚拟机 ip: 192.168.148.17/24 配置PXE环境；新建一台虚拟机作为测试机 ####

##### 本次实验采用 dnsmasq作为dhcp、tftp服务器; vsftpd 提供安装源 #####

# 关闭防火墙
    [root@localhost ~]# systemctl stop firewalld
    [root@localhost ~]# systemctl disable firewalld
    #syslinux 提供pxe启动的引导文件
    [root@localhost ~]# yum -y install dnsmasq vsftpd syslinux
    [root@localhost ~]# mkdir /var/ftp/pub/centos7
    [root@localhost ~]# systemctl enable dnsmasq vsftpd 
    [root@localhost ~]# systemctl start  vsftpd 
    [root@localhost ~]# mkdir /var/ftp/pub/centos7
    [root@localhost ~]# mount /dev/sr0 /var/ftp/pub/centos7/
    # 创建tftp服务目录
    [root@localhost ~]# mkdir /var/lib/dnsmasq/tftpboot/
    [root@localhost ~]# cd /var/lib/dnsmasq/tftpboot/
    [root@localhost tftpboot]# cp /usr/share/syslinux/{menu.c32,gpxelinux.0} .
    [root@localhost tftpboot]# mkdir pxelinux.cfg
    [root@localhost tftpboot]# cp /var/ftp/pub/centos7/isolinux/isolinux.cfg pxelinux.cfg/default
    # 编辑default文件最终内容如下 Gpxe除了支持传统的tftp还支持ftp,http方式下载文件
    default menu.c32
    timeout 600
    menu title CentOS 7
    
    label linux
      menu label ^Install CentOS 7
      kernel ftp://192.168.148.17/pub/centos7/isolinux/vmlinuz
      append initrd=ftp://192.168.148.17/pub/centos7/isolinux/initrd.img  inst.repo=ftp://192.168.148.17/pub/centos7/
    
    label local
      menu label Boot from ^local drive
      menu default
      localboot 0xffff
    
    # 在/etc/dnsmasq.d/ 创建pxe.conf  ;指定 dhcp地址池的范围，启用tftp功能,指定tftp服务器地址和引导文件；文件内容如下:
    [root@localhost ~]# cat /etc/dnsmasq.d/pxe.conf 
    dhcp-range=192.168.148.50,192.168.148.100,255.255.255.0,12h
    enable-tftp
    dhcp-boot=/var/lib/dnsmasq/tftpboot/gpxelinux.0,192.168.148.17
    
    [root@localhost ~]# systemctl start dnsmasq
    # 检测ipv4 监听的udp端口
    [root@localhost ~]# ss -4  -unl
    State      Recv-Q Send-Q                      Local Address:Port                                     Peer Address:Port              
    UNCONN     0      0                                       *:53                                                  *:*                  
    UNCONN     0      0                                       *:67                                                  *:*                          
    UNCONN     0      0                                       *:69                                                  *:* 
    
    # 所需端口都正常开启
    # 如果需要开启防火墙 需要添加对应的服务
    [root@localhost ~]# systemctl enable firewalld
    [root@localhost ~]# systemctl start firewalld
    [root@localhost ~]# firewall-cmd --list-all
    public (active)
      target: default
      icmp-block-inversion: no
      interfaces: eth0
      sources: 
      services: ssh dhcpv6-client
      ports: 
      protocols: 
    
    [root@localhost ~]#  firewall-cmd  --permanent --add-service=ftp
    [root@localhost ~]#  firewall-cmd  --permanent --add-service=tftp
    [root@localhost ~]#  firewall-cmd  --permanent --add-service=dhcp
    [root@localhost ~]# firewall-cmd --reload
    [root@localhost ~]# firewall-cmd --list-all
    public (active)
      target: default
      icmp-block-inversion: no
      interfaces: eth0 eth1
      sources: 
      services: ssh dhcpv6-client dhcp ftp tftp

#### 启动另一台新的虚拟默认从网络启动进行系统安装 ####

![使用Dnsmasq 部署GPXE 安装 Centos7][Dnsmasq _GPXE _ Centos7]

转载于:https://blog.51cto.com/1012682/2382324

[Dnsmasq _GPXE _ Centos7]: https://s1.51cto.com/images/blog/201904/21/18980b1a87e6a870a71bef7743d7fc4d.jpg?x-oss-process=image/watermark,size_16,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_90,type_ZmFuZ3poZW5naGVpdGk=