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@tuxmartin /howto.md
Last active Aug 17, 2016

What would you like to do?
Okamzite spousteni prikazu ve virtualu

Ukazka

YouTube video:

ukazka

Instalace

mkdir -p /home/martin/qemu/data
cd /home/martin/qemu/data
qemu-img create -f qcow2 /home/martin/qemu/debian.qcow2 8G
wget http://debian.superhosting.cz/debian-cd/8.5.0/amd64/iso-cd/debian-8.5.0-amd64-CD-1.iso -O /home/martin/Stažené/debian-8.5.0-amd64-CD-1.iso

qemu-system-x86_64 -enable-kvm -m 512 -smp 2 -boot once=d -drive file=/home/martin/qemu/debian.qcow2,media=disk,format=qcow2 -drive file=/home/martin/Stažené/debian-8.5.0-amd64-CD-1.iso,media=cdrom -localtime -device e1000,netdev=user.0 -netdev user,id=user.0,hostfwd=tcp::2222-:22,smb=/home/martin/qemu/data

Nainstalovat Debian s SSH serverem.

Po instalaci Debianu do virtualu se do nej prihlasit a vytvorit soubor /usr/local/bin/asdf s obsahem:

#!/bin/bash

MD5=""
while true ; do
	MD5_TMP=`md5sum /mnt/qemu/cmd.sh`
	if [ "$MD5" != "$MD5_TMP" ]; then
		MD5=$MD5_TMP
		cat /mnt/qemu/cmd.sh | bash > /dev/tty1
	fi
	sleep 1
done
 

Dalsi veci... :

chmod a+x /usr/local/bin/asdf
sed -i 's/deb cdrom/#deb cdrom/g' /etc/apt/sources.list
apt-get update
apt-get install cifs-utils
mkdir /mnt/qemu
sed -i 's/PermitRootLogin without-password/PermitRootLogin yes/g' /etc/ssh/sshd_config
systemctl restart ssh.service 
sed -i 's/GRUB_TIMEOUT=5/GRUB_TIMEOUT=0/g' /etc/default/grub
update-grub

do /etc/rc.local pridat pred radek exit 0:

/usr/local/bin/asdf &

do /etc/fstab pridat (nakonec dat prazdny radek):

mount -t cifs -o guest //10.0.2.4/qemu /mnt/qemu
//10.0.2.4/qemu /mnt/qemu cifs  guest  0  0

Pridat do virtualu svuj SSH klic:

ssh-copy-id -p 2222 root@localhost

Pouzivani

Spustit virtual

qemu-system-x86_64 -enable-kvm -m 512 -smp 2 -drive file=/home/martin/qemu/debian.qcow2,media=disk,format=qcow2 -localtime -device e1000,netdev=user.0 -netdev user,id=user.0,hostfwd=tcp::2222-:22,smb=/home/martin/qemu/data

a do souboru /home/martin/qemu/data/cmd.sh pridat libovolne prikazy.

echo "echo 'Hello world z virtualu'" > /home/martin/qemu/data/cmd.sh
echo "echo 'text z virtualu' > /mnt/qemu/vystup.txt" >> /home/martin/qemu/data/cmd.sh

ihned po ulozeni souboru se prikazy ve virtualu vykonaji (posilaji se pres rouru do bashe pod rootem).

Do virtualu se da prihlasit pres ssh: ssh -p 2222 root@localhost (bez hesla, prihlasovani klicem).

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