Install Foreman PXE boot
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Foreman is a complete lifecycle management tool for physical and virtual servers. We give system administrators the power to easily automate repetitive tasks, quickly deploy applications, and proactively manage servers, on-premise or in the cloud.
I hawe a VM with two virtual interface the enp0s3 for NAT and enp0s9 with an internal network.
Install DHCP server
yum install -y dhcp nano -y
echo "DHCPDARGS=enp0s9" >> /etc/sysconfig/dhcpd
cat > /etc/dhcp/dhcpd.conf << EOF
#DHCP configuration for PXE boot server
ddns-update-style interim;
ignore client-updates;
authoritative;
allow booting;
allow bootp;
allow unknown-clients;
# A slightly different configuration for an internal subnet.
subnet 192.168.100.0
netmask 255.255.255.0
{
range 192.168.100.101 192.168.100.200;
option domain-name-servers 192.168.100.100;
option routers 192.168.100.100;
default-lease-time 600;
max-lease-time 7200;
# PXE SERVER IP
next-server 192.168.100.100; # PXE server ip
filename "pxelinux.0";
}
EOF
systemctl start dhcpd.service
systemctl enable dhcpd.service
systemctl status dhcpd.service
Install DNS server
yum -y install bind bind-utils
nano /etc/named.conf
options {
...
// listen-on port 53 { 127.0.0.1; };
// listen-on-v6 port 53 { ::1; };
...
allow-query { localhost; 192.168.100.0/24; };
...
forwarders {
8.8.8.8;
8.8.4.4;
};
};
include "/etc/named.my.zones";
touch /etc/named.my.zones
chown root:named /etc/named.my.zones
nano /etc/named.my.zones
zone "devopstales.intra" IN {
type master;
file "devopstales.intra.db";
allow-update { none; };
};
nano /var/named/devopstales.intra.db
@ IN SOA primary.devopstales.intra. root.mydomain.intra. (
1001 ;Serial
3H ;Refresh
15M ;Retry
1W ;Expire
1D ;Minimum TTL
)
;Name Server Information
@ IN NS primary.devopstales.intra.
;IP address of Name Server
primary IN A 192.168.100.100
;Mail exchanger
devopstales.intra. IN MX 10 mail.mydomain.intra.
;A - Record HostName To IP Address
foreman IN A 192.168.100.100
mail IN A 192.168.100.50
systemctl restart named
systemctl status named
systemctl enable named
Install vtftp
yum install vsftpd -y
nano /etc/vsftpd/vsftpd.conf
anonymous_enable=YES
write_enable=NO
systemctl enable vsftpd
systemctl restart vsftpd
systemctl status vsftpd
cd /opt
wget http://ftp.bme.hu/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1908.iso
wget http://ftp.bme.hu/centos/7/isos/x86_64/sha256sum.txt
sha256sum CentOS-7-x86_64-Minimal-1908.iso
cat sha256sum.txt
mount -o loop /opt/CentOS-7-x86_64-Minimal-1908.iso /mnt
mkdir /var/ftp/pub/CentOS_7_x86_64
rsync -rv --progress /mnt/ /var/ftp/pub/CentOS_7_x86_64/
umount /mnt
restorecon -Rv /var/ftp/pub/
Install Foreman
yum -y install https://yum.puppet.com/puppet6-release-el-7.noarch.rpm
yum -y install http://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
yum -y install https://yum.theforeman.org/releases/1.23/el7/x86_64/foreman-release.rpm
yum -y install foreman-installer
foreman-installer \
--foreman-initial-organization "mydomain" \
--foreman-initial-location "office" \
--enable-foreman-plugin-ansible \
--enable-foreman-proxy-plugin-ansible \
--enable-foreman-plugin-remote-execution \
--enable-foreman-proxy-plugin-remote-execution-ssh \
--enable-foreman-plugin-cockpit \
--enable-foreman-plugin-openscap
Configure hammer
nano ~/.hammer/cli.modules.d/foreman.yml
:foreman:
:host: 'https://foreman.devopstales.intra/'
:username: 'admin'
:password: '**********'
hammer defaults add --param-name organization --param-value "mydomain"
hammer defaults add --param-name location --param-value "office"
hammer defaults list
Configurate PXEboot
sudo ss -lnup | grep 69
grep disa /etc/xinetd.d/tftp
ls -l /var/lib/tftpboot/
# create subnet
hammer subnet create \
--name PXEnet \
--network-type IPv4 \
--network 192.168.100.0 \
--mask 255.255.255.0 \
--dns-primary 192.168.100.100 \
--domains devopstales.intra \
--tftp-id 1 \
--httpboot-id 1 \
--ipam "Internal DB" \
--from 192.168.100.101 \
--to 192.168.100.200 \
--boot-mode Static
hammer medium create \
--name "CentOS7_DVD_FTP" \
--os-family "Redhat" \
--path "ftp://foreman.devopstales.intra/pub/CentOS_7_x86_64/"
Create a file hardened_ptable.txt with the content below.
<%#
kind: ptable
name: Kickstart hardened
oses:
- CentOS
- Fedora
- RedHat
%>
# System bootloader configuration
bootloader --location=mbr --boot-drive=sda --timeout=3
# Partition clearing information
clearpart --all --drives=sda
zerombr
# Disk partitioning information
part /boot --fstype="xfs" --ondisk=sda --size=1024 --label=boot --fsoptions="rw,nodev,noexec,nosuid"
# 30GB physical volume
part pv.01 --fstype="lvmpv" --ondisk=sda --size=30720
volgroup vg_os pv.01
logvol / --fstype="xfs" --size=4096 --vgname=vg_os --name=lv_root
logvol /home --fstype="xfs" --size=512 --vgname=vg_os --name=lv_home --fsoptions="rw,nodev,nosuid"
logvol /tmp --fstype="xfs" --size=1024 --vgname=vg_os --name=lv_tmp --fsoptions="rw,nodev,noexec,nosuid"
logvol /var --fstype="xfs" --size=6144 --vgname=vg_os --name=lv_var --fsoptions="rw,nosuid"
logvol /var/log --fstype="xfs" --size=512 --vgname=vg_os --name=lv_log --fsoptions="rw,nodev,noexec,nosuid"
logvol swap --fstype="swap" --size=2048 --vgname=vg_os --name=lv_swap --fsoptions="swap"
hammer partition-table create \
--name "Kickstart hardened" \
--os-family "Redhat" \
--operatingsystems "CentOS 7.4.1708" \
--file "hardened_ptable.txt"
hammer os create \
--name "CentOS" \
--major "7" \
--minor "4.1708" \
--family "Redhat" \
--password-hash "SHA512" \
--architectures "x86_64" \
--media "CentOS7_DVD_FTP" \
--partition-tables "Kickstart hardened"
hammer hostgroup create \
--name "el7_group" \
--description "Host group for CentOS 7 servers" \
--lifecycle-environment "stable" \
--content-view "el7_content" \
--content-source-id "1" \
--environment "homelab" \
--puppet-proxy "foreman.devopstales.intra" \
--puppet-ca-proxy "foreman.devopstales.intra" \
--domain "devopstales.intra" \
--subnet "PXEnet" \
--architecture "x86_64" \
--operatingsystem "CentOS 4.1708" \
--medium "CentOS7_DVD_FTP" \
--partition-table "Kickstart hardened" \
--pxe-loader "PXELinux BIOS" \
--root-pass "Password1"
hammer hostgroup set-parameter \
--name "selinux-mode" \
--value "disabled" \
--hostgroup "el7_group"
hammer hostgroup set-parameter \
--name "disable-firewall" \
--value "true" \
--hostgroup "el7_group"
hammer hostgroup set-parameter \
--name "bootloader-append" \
--value "net.ifnames=0 biosdevname=0" \
--hostgroup "el7_group"
hammer host create \
--name "pxe-test" \
--hostgroup "el7_group" \
--interface "type=interface,mac=08:00:27:fb:ad:17,ip=192.168.100.110,managed=true,primary=true,provision=true"
ll /var/lib/tftpboot/pxelinux.cfg/
cat /var/lib/tftpboot/pxelinux.cfg/01-08-00-27-fb-ad-17
