[CentOS 7.9] PXE Server with KickStart 구축

1) 기본 설정

systemctl stop firewalld
systemctl disable firewalld
systemctl stop NetworkManager
systemctl disable NetworkManager
setenforce 0
sed -i ‘s/SELINUX=enforcing/ SELINUX=disabled/g’ /etc/selinux/config
yum install -y epel-release && yum update -y

 

2) PXE 관련 Package 설치 및 설정

yum install -y dhcp tftp tftp-server syslinux vsftpd xinetd

cat > /etc/dhcp/dhcpd.conf <<EOF
# DHCP Server Configuration file.

ddns-update-style interim;
ignore client-updates;
authoritative;
allow booting;
allow bootp;
allow unknown-clients;

# internal subnet for my DHCP Server
subnet 10.10.10.0 netmask 255.255.255.0 {
interface eth0;
range 10.10.10.101 10.10.10.200;            // IP range
option domain-name-servers 8.8.8.8;         // DNS Server
option routers 10.10.10.1;                  // GateWay IP
option broadcast-address 10.10.10.255;
default-lease-time 600;
max-lease-time 7200;

# IP of PXE Server
next-server 10.10.10.1;                     // PXE Server IP
filename "pxelinux.0";
}
EOF

cat /etc/xinetd.d/tftp <<EOF
service tftp
{
        socket_type             = dgram
        protocol                = udp
        wait                    = yes
        user                    = root
        server                  = /usr/sbin/in.tftpd
        server_args             = -s /var/lib/tftpboot
        disable                 = no
        per_source              = 11
        cps                     = 100 2
        flags                   = IPv4
}
EOF

 

3) Rocky 8.6, RHEL 8.6 Mount 및 파일 복사

mkdir -p /var/ftp/pub/rhel8
mkdir -p /var/ftp/pub/rocky8
mount -o loop rhel-8.6-x86_64-dvd.iso /mnt
cp -av /mnt/* /var/ftp/pub/rhel8 && umount /mnt
mount -o loop Rocky-8.6-x86_64-dvd1.iso /mnt
cp -av /mnt/* /var/ftp/pub/rocky8/ && umount /mnt

 

4) PXE 관련 파일 복사 및 작성

cp -v /usr/share/syslinux/pxelinux.0 /var/lib/tftpboot
cp -v /usr/share/syslinux/menu.c32 /var/lib/tftpboot
cp -v /usr/share/syslinux/memdisk /var/lib/tftpboot
cp -v /usr/share/syslinux/mboot.c32 /var/lib/tftpboot
cp -v /usr/share/syslinux/chain.c32 /var/lib/tftpboot
mkdir /var/lib/tftpboot/pxelinux.cfg
mkdir -p /var/lib/tftpboot/networkboot/rocky-8.6
mkdir -p /var/lib/tftpboot/networkboot/rhel-8.6
cp /var/ftp/pub/rhel8/images/pxeboot/vmlinuz /var/lib/tftpboot/networkboot/rhel-8.6/
cp /var/ftp/pub/rhel8/images/pxeboot/initrd.img /var/lib/tftpboot/networkboot/rhel-8.6/
cp /var/ftp/pub/rocky8/images/pxeboot/vmlinuz /var/lib/tftpboot/networkboot/rocky-8.6/
cp /var/ftp/pub/rocky8/images/pxeboot/initrd.img /var/lib/tftpboot/networkboot/rocky-8.6/

cat > /var/lib/tftpboot/pxelinux.cfg/default <<EOF
default menu.c32
timeout 100
prompt 0
menu title ### OS Installer Boot Menu ###

LABEL rhel-8.6
        kernel /networkboot/rhel-8.6/vmlinuz
        append initrd=/networkboot/rhel-8.6/initrd.img inst.repo=ftp://10.10.10.1/pub/rhel8 ks=ftp://10.10.10.1/pub/rhel8.cfg 

LABEL rocky-8.6
        kernel /networkboot/rocky-8.6/vmlinuz
        append initrd=/networkboot/rocky-8.6/initrd.img inst.repo=ftp://10.10.10.1/pub/rocky8 ks=ftp://10.10.10.1/pub/rocky8.cfg
EOF

cat > /var/ftp/pub/rhel8.cfg <<EOF

/var/lib/tftpboot/pxelinux.cfg/default 파일에 해당 rhel8 설정에서 "ks=ftp://10.10.10.1/pub/rhel8.cfg" 부분을 지우면 Kickstart 이용한 자동 설치가 아닌 네트워크 부팅을 통해 수동 설치를 진행할 수 있다.

수동 설치를 통해 본인이 설정하고자 하는대로 root PWD 및 패키지, 파티셔닝등 진행 후 수동 설치를 끝내면 /root 디렉토리에 anaconda.cfg 파일이 있을텐데 해당 내용 긁어다가 여기에 넣어주면 된다.

EOF

cat > /var/ftp/pub/rocky8.cfg <<EOF

위와 동일

EOF

 

5) 데몬 재시작

systemctl restart xinetd  
systemctl restart dhcpd  
systemctl restart vsftpd