X-Git-Url: https://git.adam-barratt.org.uk/?a=blobdiff_plain;ds=sidebyside;f=input%2Fhowto%2Finstall-kvm.creole;h=77163e58e24d84cee021a02e02f1b5cd35ebad3e;hb=85dd43b1d687bfe86d3bee03bc6730b06b9f9ff0;hp=e4c760d348f708844a6043f42faa2171b8f42559;hpb=5aa2dee5eaffc1d7064f9a76d07947d0a19128b9;p=mirror%2Fdsa-wiki.git

diff --git a/input/howto/install-kvm.creole b/input/howto/install-kvm.creole
index e4c760d..77163e5 100644
--- a/input/howto/install-kvm.creole
+++ b/input/howto/install-kvm.creole
@@ -14,8 +14,32 @@ setup_env() {
  read guest &&
  target=/mnt/target &&
  mirror=`cat /etc/apt/sources.list /etc/apt/sources.list.d/debian.list 2>/dev/null | awk '/^deb.*debian/ {print $2; exit}'` &&
- vg=`vgdisplay -c | awk -F: '{print $1;exit}' | sed 's/ *//g'` &&
- echo "Chosen vg is $vg" &&
+ vgdefault=`vgdisplay -c | awk -F: '{print $1;exit}' | sed 's/ *//g'` &&
+ echo -n "Volume group? [$vgdefault]: " &&
+ read vg &&
+ if [ "$vg" = "" ]; then vg="$vgdefault"; fi &&
+ echo -n "Use lvm for non-swap partitions? [Y/n] " &&
+ read use_lvm &&
+ if [ "$use_lvm" = "n" ]; then
+   : SAN, as in the msa2012i at ubcece &&
+   : requires that it is already setup &&
+   dev_root="/dev/mapper/$guest-root" &&
+   dev_boot="/dev/mapper/$guest-boot" &&
+   echo "Root device will be $dev_root" &&
+   echo "Boot device will be $dev_boot" &&
+   echo "Make sure they exist already." &&
+   fs=xfs
+ else
+   use_lvm="y" &&
+   dev_root="/dev/mapper/$vg-$guest--root" &&
+   dev_boot="/dev/mapper/$vg-$guest--boot" &&
+   echo "Root device will be $dev_root" &&
+   echo "Boot device will be $dev_boot" &&
+   fs=ext3
+ fi &&
+ dev_swap="/dev/mapper/$vg-$guest--swap" &&
+ echo "Swap device will be $dev_swap" &&
+ echo "fs is $fs"
  echo "Chosen mirror is $mirror"
 }
 }}}
@@ -43,20 +67,22 @@ trivial.
 # install base
 
  apt-get install debootstrap kpartx &&
- lvcreate -L 128m -n "$guest"-boot /dev/"$vg" &&
- lvcreate -L 4g -n "$guest"-root /dev/"$vg" &&
+ if [ "$use_lvm" = "y" ]; then
+   lvcreate -L 128m -n "$guest"-boot /dev/"$vg" &&
+   lvcreate -L 4g -n "$guest"-root /dev/"$vg"
+ fi &&
  lvcreate -L 4g -n "$guest"-swap /dev/"$vg" &&
  : &&
- ( echo ',,L,*' | sfdisk /dev/"$vg"/"$guest"-boot ) &&
- kpartx -v -a /dev/"$vg"/"$guest"-boot &&
- mkfs.ext3 /dev/mapper/"$vg"-"$guest"--boot1 &&
- mkfs.ext3 /dev/"$vg"/"$guest"-root &&
- mkswap /dev/"$vg"/"$guest"-swap &&
+ ( echo ',,L,*' | sfdisk "$dev_boot" ) &&
+ kpartx -v -a "$dev_boot" &&
+ mkfs."$fs" "$dev_boot"1 &&
+ mkfs."$fs" "$dev_root" &&
+ mkswap "$dev_swap" &&
  : &&
  mkdir -p "$target" &&
- mount /dev/"$vg"/"$guest"-root "$target" &&
+ mount "$dev_root" "$target" &&
  mkdir -p "$target/boot" &&
- mount /dev/mapper/"$vg"-"$guest"--boot1 "$target/boot" &&
+ mount "$dev_boot"1 "$target/boot" &&
 
  cd "$target" &&
  debootstrap --variant=minbase lenny . "$mirror"
@@ -86,31 +112,38 @@ EOF
  apt-key exportall | chroot . apt-key add - &&
  chroot . apt-get update &&
  echo "Apt::Install-Recommends 0;" > etc/apt/apt.conf.d/local-recommends &&
- chroot . apt-get install net-tools iproute ifupdown dialog vim netbase &&
+ chroot . apt-get install net-tools iproute ifupdown dialog vim netbase xfsprogs &&
  #chroot . apt-get remove --purge cpp dpkg-dev g++ gcc gcc-4.2-base libatm1 libdevmapper1.02.1 libgpm2 libc6-dev linux-libc-dev libstdc++6-4.3-dev binutils cpp-4.3 gcc-4.3 gettext-base libgmp3c2 libgomp1 libmpfr1ldbl libtimedate-perl
  # don't - it may start daemons
  #chroot . apt-get dist-upgrade
  chroot . apt-get install grub &&
  cp -av usr/lib/grub/x86_64-pc boot/grub &&
  grub << EOF &&
-device (hd0) /dev/mapper/$vg-$guest--boot
+device (hd0) $dev_boot
 root (hd0,0)
 setup (hd0)
 quit
 EOF
  # install a kernel image
- echo -e "do_symlinks = yes\nlink_in_boot = yes\ndo_initrd = yes" > etc/kernel-img.conf &&
- chroot . apt-get install linux-image-2.6-amd64
-
+ cat > etc/kernel-img.conf << EOF &&
+do_symlinks = yes
+link_in_boot = yes
+do_initrd = yes
+EOF
+ chroot . apt-get install linux-image-2.6-amd64 &&
+ cat >> etc/kernel-img.conf << EOF
+postinst_hook = /usr/sbin/update-grub
+postrm_hook   = /usr/sbin/update-grub
+EOF
 }}}
 
 And a fstab and a boot loader config
 
 {{{
  # doesn't work: chroot . update-grub
- rootuuid=`vol_id /dev/"$vg"/"$guest"-root "$target" | awk -F= '$1=="ID_FS_UUID" {print $2}'` &&
- swapuuid=`vol_id /dev/"$vg"/"$guest"-swap "$target" | awk -F= '$1=="ID_FS_UUID" {print $2}'` &&
- bootuuid=`vol_id /dev/mapper/"$vg"-"$guest"--boot1  | awk -F= '$1=="ID_FS_UUID" {print $2}'` &&
+ rootuuid=`vol_id "$dev_root" "$target" | awk -F= '$1=="ID_FS_UUID" {print $2}'` &&
+ swapuuid=`vol_id "$dev_swap" "$target" | awk -F= '$1=="ID_FS_UUID" {print $2}'` &&
+ bootuuid=`vol_id "$dev_boot"1  | awk -F= '$1=="ID_FS_UUID" {print $2}'` &&
  cat > boot/grub/menu.lst << EOF &&
 default 0
 timeout 5
@@ -127,9 +160,14 @@ initrd /initrd.img
 
 ### END DEBIAN AUTOMAGIC KERNELS LIST
 EOF
+ if [ "$fs" = "ext3" ]; then
+   rootopts="errors=remount-ro"
+ else
+   rootopts="defaults"
+ fi
  cat > etc/fstab << EOF &&
-UUID=$rootuuid    /               ext3    errors=remount-ro 0       1
-UUID=$bootuuid    /boot           ext3    defaults        0       2
+UUID=$rootuuid    /               $fs    $rootopts 0       1
+UUID=$bootuuid    /boot           $fs    defaults        0       2
 UUID=$swapuuid    none            swap    sw              0       0
 EOF
  cat > etc/network/interfaces << EOF
@@ -155,13 +193,13 @@ And unmount:
   cd / &&
  umount "$target"/boot &&
  umount "$target" &&
- kpartx -v -d /dev/"$vg"/"$guest"-boot &&
+ kpartx -v -d "$dev_boot" &&
  rmdir "$target"
 }}}
 
 === virsh setup ===
 
-Setup a new kvm domain by creating a new file in /etc/dm-virt/`hostname/$guest.xml.
+Setup a new kvm domain by creating a new file in /etc/da-virt/`hostname/$guest.xml.
 
 * Properly configure hostname
 * Pick a new uuid ({{{uuidgen}}})
@@ -174,6 +212,9 @@ Setup a new kvm domain by creating a new file in /etc/dm-virt/`hostname/$guest.x
 ** {{{virsh destroy foo}}}
 ** {{{virsh vncdisplay foo}}} (and ssh -L 5900:localhost:<5900+x> $host  and  vnc localhost)
 
+=== post processing ===
+
+Do not forget to set a sane root password before installing ssh in the new kvm domain.
 
 === when stuff goes wrong ===
 
@@ -181,11 +222,11 @@ To get to the guest data from the host:
 
 {{{
   setup_env
- kpartx -v -a /dev/"$vg"/"$guest"-boot &&
+ kpartx -v -a "$dev_boot" &&
  mkdir -p "$target" &&
- mount /dev/"$vg"/"$guest"-root "$target" &&
+ mount "$dev_root" "$target" &&
  mkdir -p "$target/boot" &&
- mount /dev/mapper/"$vg"-"$guest"--boot1 "$target/boot"
+ mount "$dev_boot"1 "$target/boot"
 }}}
 
 and once you're done:
@@ -193,7 +234,7 @@ and once you're done:
  cd / &&
  umount "$target"/boot &&
  umount "$target" &&
- kpartx -v -d /dev/"$vg"/"$guest"-boot &&
+ kpartx -v -d "$dev_boot" &&
  rmdir "$target"
 }}}