how to create a VM

content/bootstrap_alpine.rst

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+1 - boot a VM with the last alpine linux iso and a hard disk
+2 - setup network interface (setup-interfaces, then ifup eth0)
+3 - setup dns (add gateway / any DNS to /etc/resolv.conf)
+4 - apk add e2fsprogs
+5 - mkfs.ext4 /dev/vda
+6 - mount -t ext4 /dev/vda /mnt
+7 - /sbin/apk --arch x86_64 -X http://dl-cdn.alpinelinux.org/alpine/latest-stable/main/ -U --allow-untrusted --root /mnt --initdb add alpine-base agetty # replace latest-stable by the wanted version
+8 - echo "UUID=`blkid -s UUID -o value /dev/vda`    /   ext4 defaults,errors=remount-ro,discard,noatime   0    1" > /mnt/etc/fstab
+9 - (optional)  tty1::respawn:/sbin/agetty --autologin root tty1 linux # replace tty line from /etc/inittab with this line to have autologin - no need to set root password. you can remove other ttys
+10 - cp /etc/network/interfaces /mnt/etc/network/interfaces
+11 - cp /etc/resolv.conf /mnt/etc/resolv.conf
+12 - vi /mnt/etc/hostname # setup hostname
+13 - cp /etc/apk/repositories /mnt/etc/apk/repositories # setup alpine repos (edit to set alpine version), enable community
+14 - for a in proc sys dev; do mount -o bind /$a /mnt/$a; done; chroot /mnt /bin/ash # chroot into target
+15 - apk update
+16 - apk add linux-virt linux-firmware-none acpi mkinitfs vim screen qemu-guest-agent
+17 - enable services
+rc-update add seedrng boot
+rc-update add swap boot
+rc-update add networking boot
+rc-update add modules boot
+rc-update add hostname boot
+rc-update add hwclock boot
+rc-update add bootmisc boot
+rc-update add acpid default
+rc-update add crond default
+rc-update add qemu-guest-agent default
+rc-update add devfs sysinit
+rc-update add dmesg sysinit
+rc-update add mdev sysinit
+rc-update add hwdrivers sysinit
+rc-update add killprocs shutdown
+rc-update add mount-ro shutdown
+rc-update add savecache shutdown
+18 - shutdown VM (force)
+19 - setup kernel
+

content/vm_creation

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+# choose a name ($NEW_VM)
+# choose a volume size ($SIZE)
+virsh vol-create-as vg0 rootfs-$NEW_VM $SIZE --format logical
+virsh define $NEW_VM
+virsh edit $NEW_VM
+# add hard disk as "vda" and set volume to boot on (vg0/rootfs-$NEW_VM)
+# add cdrom  as "hda" and set volume to the distro iso (use "virt" version)
+# copy the mac address of the network card ($MAC)
+# choose an ip ($IP)
+~/libvirt/scripts/net-add_static_lease new_vm $MAC $IP
+virsh start $NEW_VM
+virsh domdisplay $NEW_VM
+# check the port the vnc display is switched on ($PORT)
+virsh domdisplay $NEW_VM | cut -d: -f3
+# on the local machine, create a ssh tunnel:
+ssh root@freepoteries.fr -L 5900:127.0.0.1:59$PORT
+# out of the newly created ssh session (keep it open for log messages)
+vncviewer 127.0.0.1:5900
+# login into your newly booted os
+# all the following instructions are done into the VM, by the VNC client
+# (vncviewer)
+
+# instructions for alpine linux :
+# choose your keymap $KM (fr)
+setup-keymap $KM
+# choose your hostname
+setup-hostname
+# answer your system hostname (that will also be its subdomain)
+# choose your timezone $TZ (Europe/Paris)
+setup-timezone -z $TZ
+# setup interfaces (answer "eth0" and "dhcp")
+setup-interfaces
+/etc/init.d/networking restart
+# choose your ssh server (openssh)
+setup-sshd
+# choose your ntp server (chrony)
+setup-ntp
+# choose your repo (36 : alpine.42.fr)
+setup-apkrepos
+# setup the dns
+setup-dns
+# answer 1 : freepoteries.fr
+# answer 2 : 192.168.42.11
+# test by pinging freepoteries.fr and belugaspot.freepoteries.fr (always up),
+# they should give "192.168.42.1" and "192.168.42.55"
+# setup mail server
+setup-mta 
+# answer:  mail.freepoteries.fr
+# install syslinux and e2fsprogs if not installed
+apk add syslinux e2fsprogs xfsprogs
+# create your disks
+fdisk /dev/vda
+# create a partition that takes the whole hard disk
+# make it bootable "a"
+# save your changes "w"
+# format it to the right fs
+mkfs.xfs /dev/vda1
+# fix the mbr
+dd bs=440 count=1 conv=notrunc if=/usr/share/syslinux/mbr.bin of=/dev/vda
+# mount the partition
+mount /dev/vda1 /mnt
+mkdir /mnt/boot
+# install the system on the created partition
+setup-disk -m sys /mnt
+mount -o bind /dev /mnt/dev
+mount -o bind /proc /mnt/proc
+chroot /mnt
+# install the bootloader
+extlinux -i /boot
+update-extlinux
+# change password (toor)
+passwd
+
+exit
+poweroff
+
+# in the first ssh session
+virsh edit $NEW_VM
+# set the boot dev to "hd" - ~/libvirt/scripts/switch_boot_device.sh $NEW_VM
+virsh destroy $NEW_VM
+virsh start $NEW_VM
+
+# ssh
+vim /etc/ssh/sshd_config
+# set "PermitRootLogin yes"
+rc-service sshd restart
+mkdir ~/.ssh
+
+# on the host:
+scp ~/.ssh/authorized_keys new_host.freepoteries.fr:~/.ssh/
+
+# on the vm
+vim /etc/ssh/sshd_config
+# set "PermitRootLogin without-password"
+rc-service sshd restart
+
+# on the host
+eval $(ssh-agent)
+ssh-add ~/.ssh/*
+ssh root@new_host.freepoteries.fr (should not ask password)
+
+# add zone on unbound
+# add proxy on revproxy
+
+# packages : 
+screen
+vim
+git
+nginx
+php7-fpm
+ruby
+python3
+
+# var/www :
+garradin
+
+# etc/nginx/conf.d :
+garradin.conf
+
+# follow these instructions
+https://wiki.alpinelinux.org/wiki/Nginx_with_PHP#PHP7_Installation