stresstesting: A repository from atxbyea

#Installing host

##Debian\Ubuntu based install of tftpd \ apache2 \ dhcp-server

apt install isc-dhcp-server tftpd-hpa syslinux-efi syslinux-common apache2 sshpass debootstrap nfs-kernel-server

##configuring the IP address of the pxe adapter

nano /etc/netplan/01-netcfg.yaml

network:echo hpilo | tee -a /etc/modules

  version: 2
  renderer: networkd
  ethernets:
    eth0:
      dhcp4: true
      dhcp6: false
      optional: true
      nameservers:
        addresses: [4.2.2.1, 4.2.2.2, 208.67.220.220]
    yourIF:
      dhcp4: false
      addresses: [10.1.0.1/20]

netplan apply

##create folders

mkdir /tftpboot
mkdir /tftpboot/image
mkdir /tftpboot/ubuntu
mkdir /tftpboot/runconfirm
mkdir /tftpboot/image/casper
mkdir /tftpboot/pxelinux.cfg

cd /usr/lib/syslinux/modules/efi64
cp ldlinux.e64 /tftpboot
cp {libutil.c32,menu.c32} /tftpboot


cd /tmp
wget https://mirrors.edge.kernel.org/pub/linux/utils/boot/syslinux/Testing/6.04/syslinux-6.04-pre1.tar.gz
tar -zxvf syslinux-6.04-pre1.tar.gz
cp /tmp/syslinux-6.04-pre1/efi64/efi/syslinux.efi /tftpboot

##configure tftpd nano /etc/default/tftpd-hpa

TFTP_DIRECTORY="/tftpboot"
TFTP_ADDRESS="10.1.0.1:69"

systemctl restart tftpd-hpa

##configure dhcp server

nano /etc/dhcp/dhcpd.conf

subnet 10.1.0.0 netmask 255.255.240.0 {
        range 10.1.1.1 10.1.15.200;
        option routers 10.1.0.1;
        default-lease-time 3600;
        max-lease-time 86400;
        next-server 10.1.0.1;
        option bootfile-name "syslinux.efi";
}
authoritative;

nano /etc/default/isc-dhcp-server

INTERFACESv4="yourIF"

systemctl restart isc-dhcp-server

##configure pxe boot menu

nano /tftpboot/pxelinux.cfg/default

UI menu.c32
PROMPT 1
TIMEOUT 1
LABEL Stresslinux Net Boot
         MENU LABEL EirikZ Stress Your DC
         KERNEL http://10.1.0.1/image/casper/vmlinuz
         APPEND root=/dev/nfs initrd=http://10.1.0.1/image/casper/initrd.img nfsroot=10.1.0.1:/tftpboot/ubuntu ip=dhcp rw boot=nfs nfsboot=nfs   
         TEXT HELP
                 It's getting hot in here
         ENDTEXT

##configure apache2

nano /etc/apache2/sites-enabled/000-default.conf

DocumentRoot /tftpboot

nano /etc/apache2/apache2.conf

<Directory /tftpboot>
	Options Indexes FollowSymLinks
	AllowOverride None
	Require all granted
</Directory>

apache2ctl restart

##configure NFS exports

nano /etc/exports

/home           10.1.0.0/20(rw,no_root_squash,async,insecure)
/opt            10.1.0.0/20(rw,no_root_squash,async,insecure)
/tftpboot/ubuntu 10.1.0.0/20(rw,no_root_squash,async,insecure)
/tftpboot/runconfirm 10.1.0.0/20(rw,no_root_squash,async,insecure)

Reload NFS exports

exportfs -rv

##creating the nfs diskless root

debootstrap --arch=amd64 --variant=minbase jammy /tftpboot/ubuntu http://archive.ubuntu.com/ubuntu

Then enter the chroot

mount --bind /dev /tftpboot/ubuntu/dev
mount --bind /run /tftpboot/ubuntu/run
chroot /tftpboot/ubuntu
mount none -t proc /proc
mount none -t sysfs /sys
mount none -t devpts /dev/pts
export HOME=/root
export LC_ALL=C

Populate the sources

cat <<EOF > /etc/apt/sources.list
deb http://us.archive.ubuntu.com/ubuntu/ jammy main restricted universe multiverse 
deb-src http://us.archive.ubuntu.com/ubuntu/ jammy main restricted universe multiverse
deb http://us.archive.ubuntu.com/ubuntu/ jammy-security main restricted universe multiverse 
deb-src http://us.archive.ubuntu.com/ubuntu/ jammy-security main restricted universe multiverse
deb http://us.archive.ubuntu.com/ubuntu/ jammy-updates main restricted universe multiverse 
deb-src http://us.archive.ubuntu.com/ubuntu/ jammy-updates main restricted universe multiverse    
EOF

Install software and do some local changes

apt-get update
apt install -y libterm-readline-gnu-perl systemd-sysv 
dbus-uuidgen > /etc/machine-id
ln -fs /etc/machine-id /var/lib/dbus/machine-id
dpkg-divert --local --rename --add /sbin/initctl
ln -s /bin/true /sbin/initctl
apt install -y stress-ng cron dmidecode ipmitool nfs-common openssh-server ubuntu-standard casper discover os-prober network-manager resolvconf net-tools locales grub-common grub-pc grub-pc-bin grub2-common vim nano less curl apt-transport-https
apt install -y --no-install-recommends linux-generic

Populate networkmanager

cat <<EOF > /etc/NetworkManager/NetworkManager.conf
[main]
rc-manager=resolvconf
plugins=ifupdown,keyfile
dns=dnsmasq
[ifupdown]
managed=false
EOF

Edit crontab to do

Start stress testing on boot
Turn on UID of chassis (should work for Dell and HPE)
Append system serial number to a NFS share so you know what servers have run

crontab -e

@reboot /usr/bin/stress-ng --vm 1 --vm-bytes 75% --vm-method all --cpu 0
@reboot /usr/bin/ipmitool chassis identify force
@reboot /usr/sbin/dmidecode -s system-serial-number >> /mnt/runconfirm/servers.txt

Edit fstab to accomodate NFS boot

proc            /proc           proc    defaults        0       0
/dev/nfs        /               nfs     defaults        1       1
none            /tmp            tmpfs   defaults        0       0
none            /var/tmp        tmpfs   defaults        0       0
10.1.0.1:/home /home          nfs     defaults        0       0
10.1.0.1:/opt /opt            nfs     defaults        0       0
10.1.0.1:/tftpboot/runconfirm	/mnt/runconfirm	nfs	defaults	0	0

Reconfigure and enable ssh

dpkg-reconfigure network-manager

chmod a+r /boot/vmlinuz*
systemctl enable ssh

Edit kernel posix

nano /etc/kernel/postinst.d/chmod-vmlinuz

#!/bin/sh -e

chmod 0644 /boot/vmlinuz-*

chmod a+x /etc/kernel/postinst.d/chmod-vmlinuz

Edit initramfs.conf to load netboot modules

nano /etc/initramfs-tools/initramfs.conf MODULES=netboot

Recreate initramfs

update-initramfs -u

Add required drivers at boottime (will vary)

echo hpilo | tee -a /etc/modules
echo bnx2x | tee -a /etc/modules

Change root password

passwd

Cleanup and leaving chroot

truncate -s 0 /etc/machine-id
rm /sbin/initctl
dpkg-divert --rename --remove /sbin/initctl

apt-get clean
rm -rf /tmp/* ~/.bash_history
umount /proc
umount /sys
umount /dev/pts
export HISTSIZE=0
exit

umount /tftpboot/ubuntu/dev
umount /tftpboot/ubuntu/run

##Copy out kernel and initrd

cp /tftpboot/ubuntu/boot/{vmlinuz,initrd.img} /tftpboot/image/casper

atxbyea/stresstesting