温故而知新，虽然工作中用到的系统都是 CentOS 6.X，但我们不能一直沉浸在过去的经验中，要跟上时代的节奏
一、实验环境
- 操作系统：CentOS Linux release 7.2.1511 (Core)
- 网卡地址：192.168.100.147/24
- 光盘镜像：CentOS-7-x86_64-Minimal-1511.iso
- 安装工具：kickstart + dhcp + tftp + ftp
二、准备工作
2.1 关闭防火墙
[root@localhost ~]# systemctl stop iptables
[root@localhost ~]# systemctl stop firewalld2.2 关闭selinux
[root@localhost ~]# setenforce 0
[root@localhost ~]# getenforce
Permissive三、原理和流程图
四、DHCP服务安装及配置
4.1 安装dhcp
[root@localhost ~]# yum install dhcp -y4.2 配置dhcpd
[root@localhost ~]# vi /etc/dhcp/dhcpd.conf
default-lease-time 600;
max-lease-time 7200;
log-facility local7;
subnet 192.168.100.0 netmask 255.255.255.0 {
option routers 192.168.100.2;
option subnet-mask 255.255.255.0;
option domain-name-servers 192.168.100.2;
option time-offset -18000; # Eastern Standard Time
range dynamic-bootp 192.168.100.60 192.168.100.100;
default-lease-time 21600;
max-lease-time 43200;
next-server 192.168.100.147;
filename "pxelinux.0";
}4.3 启动dhcpd
[root@localhost ~]# systemctl start dhcpd4.4 dhcp服务测试
[root@localhost ~]# ss -nulp | grep dhcpd
UNCONN 0 0 *:67 *:* users:(("dhcpd",pid=8769,fd=7))
UNCONN 0 0 *:7773 *:* users:(("dhcpd",pid=8769,fd=20))
UNCONN 0 0 :::55406 :::* users:(("dhcpd",pid=8769,fd=21))也可以启动新服务器，看看能否获取到IP地址
4.5 设置开机自启动（可选）
[root@localhost ~]# systemctl enable dhcpd
Created symlink from /etc/systemd/system/multi-user.target.wants/dhcpd.service to /usr/lib/systemd/system/dhcpd.service.五、ftp服务安装及配置
5.1 安装vsftpd
[root@localhost ~]# yum install -y vsftpd5.2 配置vsftpd
使用默认配置即可
5.3 挂载系统盘
系统安装盘挂载到 /var/ftp/pub 目录下，不要挂载到其它地方，因为 /var/ftp 是 anonymous 匿名用户的家目录
如果是光驱，可以这样挂
[root@localhost ~]# mount /dev/cdrom /var/ftp/pub
mount: /dev/sr0 is write-protected, mounting read-only如果是光盘镜像，可以这样挂
[root@localhost ~]# mount /opt/CentOS-7-x86_64-Minimal-1511.iso /var/ftp/pub -o loop
mount: /dev/loop0 is write-protected, mounting read-only查看光盘内容
[root@localhost ~]# ls /var/ftp/pub
CentOS_BuildTag EULA images LiveOS repodata RPM-GPG-KEY-CentOS-Testing-7
EFI GPL isolinux Packages RPM-GPG-KEY-CentOS-7 TRANS.TBL5.4 启动vsftpd服务
[root@localhost ~]# systemctl start vsftpd5.5 ftp服务器测试
[root@localhost ~]# ftp 192.168.100.147
Connected to 192.168.100.147 (192.168.100.147).
220 (vsFTPd 3.0.2)
Name (192.168.100.147:root): anonymous
331 Please specify the password.
Password:
230 Login successful.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> ls
227 Entering Passive Mode (192,168,100,147,113,88).
150 Here comes the directory listing.
-rw-r--r-- 1 0 0 1068 Aug 09 08:56 ks.cfg
dr-xr-xr-x 8 0 0 2048 Dec 09 2015 pub
226 Directory send OK.
ftp> get ks.cfg
local: ks.cfg remote: ks.cfg
227 Entering Passive Mode (192,168,100,147,126,155).
150 Opening BINARY mode data connection for ks.cfg (1068 bytes).
226 Transfer complete.
1068 bytes received in 6.8e-05 secs (15705.88 Kbytes/sec)
ftp> quit
221 Goodbye.
[root@localhost ~]# ls
anaconda-ks.cfg ks.cfg成功拿到 ks.cfg 则表示 ftp 服务正常
5.6 设置开机自启动（可选）
[root@localhost ~]# systemctl enable vsftpd
Created symlink from /etc/systemd/system/multi-user.target.wants/vsftpd.service to /usr/lib/systemd/system/vsftpd.service.六、tftp服务安装及配置
6.1 安装tftp和xinetd服务
[root@localhost ~]# yum install -y xinetd
[root@localhost ~]# yum install -y tftp-server tftp syslinux-tftpboot6.2 配置xinetd
[root@localhost ~]# vi /etc/xinetd.d/tftp
service tftp
{
socket_type = dgram
protocol = udp
wait = yes
user = root
server = /usr/sbin/in.tftpd
server_args = -s /var/lib/tftpboot
#默认disable是yes的，把它改为no即可
disable = no
per_source = 11
cps = 100 2
flags = IPv4
}6.3 配置tftp-server
[root@localhost ~]# cp /var/ftp/pub/images/pxeboot/initrd.img /var/lib/tftpboot/
[root@localhost ~]# cp /var/ftp/pub/images/pxeboot/vmlinuz /var/lib/tftpboot/
[root@localhost ~]# mkdir /var/lib/tftpboot/pxelinux.cfg
[root@localhost ~]# vi /var/lib/tftpboot/pxelinux.cfg/default
default linux
prompt 1
timeout 60
display boot.msg
label linux
kernel vmlinuz
append initrd=initrd.img text ks=ftp://192.168.100.147/ks.cfg6.4 配置kickstart
以 ~/anaconda-ks.cfg 为模板，再做一些适当的修改
[root@localhost ~]# cp ~/anaconda-ks.cfg /var/ftp/ks.cfg
[root@localhost ~]# vi /var/ftp/ks.cfg
#version=DEVEL
# System authorization information
auth --enableshadow --passalgo=sha512
# Install OS instead of upgrade
install
# Use network installation
url --url=ftp://192.168.100.147/pub
# Use graphical install
graphical
# Run the Setup Agent on first boot
firstboot --enable
# Keyboard layouts
keyboard --vckeymap=us --xlayouts='us'
# System language
lang en_US.UTF-8 --addsupport=zh_CN.UTF-8
# Network information
network --bootproto=dhcp --device=eno16777736 --onboot=yes --ipv6=auto
network --hostname=localhost.localdomain
# Root password
# root密码是: rootroot
rootpw --iscrypted $6$7gdZF8XhDef10LyT$2uRiP4qFYaBBTgpggKU/BXKgMDJLWN/BriXXgBwyzkjaz9G9YP/xD08I1OJfgBcPMoURsE5inVIoX.J6aERmR0
# System services
services --disabled="chronyd"
# System timezone
timezone Asia/Shanghai --isUtc --nontp
# System bootloader configuration
bootloader --location=mbr --boot-drive=sda
autopart --type=lvm
# Partition clearing information
clearpart --none --initlabel
%packages
@^minimal
@core
%end
%addon com_RedHat_kdump --disable --reserve-mb='auto'
%end修改访问权限
[root@localhost ~]# ll /var/ftp/ks.cfg
-rw-------. 1 root root 1083 Aug 8 16:39 /var/ftp/ks.cfg
[root@localhost ~]# chmod +r /var/ftp/ks.cfg
[root@localhost ~]# ll /var/ftp/ks.cfg
-rw-r--r--. 1 root root 1083 Aug 8 16:39 /var/ftp/ks.cfg6.5 启动tftp服务
[root@localhost ~]# systemctl start xinetd6.6 测试tftp服务
[root@localhost ~]# ls
anaconda-ks.cfg ks.cfg
[root@localhost ~]# tftp 192.168.100.147
tftp> get vmlinuz
tftp> quit
[root@localhost ~]# ls
anaconda-ks.cfg ks.cfg vmlinuz如果能成功拿到 vmlinuz 文件，则表示 tftp 服务器状态正常
6.7 设置开机自启动（可选）
[root@localhost ~]# systemctl enable xinetd
Created symlink from /etc/systemd/system/multi-user.target.wants/xinetd.service to /usr/lib/systemd/system/xinetd.service.七、启动安装
到这里已经配置完成了。
系统安装前，需要设置BIOS从网卡启动，安装完后马上改回去
八、注意事项
- 注意dhcp冲突
- 注意权限
- 注意防火墙
- 注意selinux
文章来源网络，作者：运维，如若转载，请注明出处：https://shuyeidc.com/wp/213127.html<
