vm_host

   1 #!/bin/sh
   2 set -e -f ${DRY_RUN:+-n} -u
   3 tool=${0%/*}
   4 . "$tool"/lib/rule.sh
   5 . "$tool"/etc/vm.sh
   6 . "$tool"/lib/mk.sh
   7
   8 rule_help () { # SYNTAX: [--hidden]
   9         local hidden; [ ${1:+set} ] || hidden=set
  10         cat >&2 <<-EOF
  11                 DESCRIPTION:
  12                   ce script regroupe des règles pour administrer la VM ($vm_fqdn)
  13                   _depuis_ son hôte ($vm_host) ;
  14                   il sert à la fois d'outil (aisément bidouillable)
  15                   et de documentation (préçise).
  16                   Voir \`$tool/vm_hosted' pour les règles côté VM hébergée.
  17                 SYNTAX: $0 \$RULE \${RULE}_SYNTAX
  18                 RULES:
  19                 $(sed -ne "s/^rule_\(${hidden:+[^_]}[^ ]*\) () {\( *#.*\|\)/  \1\2/p" "$tool"/etc/vm.sh "$0")
  20                 ENVIRONMENT:
  21                   TRACE # affiche les commandes avant leur exécution
  22                 $(sed -ne 's/^readonly \([^ ][^ =]*\).*}\( *#.*\|\)$/\t$\1\2/p' "$tool"/etc/vm.sh "$0")
  23                 EOF
  24  }
  25
  26 readonly vm_dev_disk=/dev/mapper/domU-$(printf %s "$vm_fqdn-disk" | sed -e 's/-/--/g')
  27 readonly vm_dev_disk_boot="${vm_dev_disk}1"
  28
  29 rule_git_config () {
  30         (
  31         cd "$tool"
  32         git config --replace branch.master.remote .
  33         git config --replace branch.master.merge refs/remotes/master
  34         )
  35  }
  36 rule_git_reset () {
  37         (
  38         cd "$tool"
  39         #git checkout -f -B master remotes/master
  40         # NOTE: pas de -B sous squeeze
  41         git checkout HEAD'^' &&
  42         git branch -f master remotes/master &&
  43         git checkout master
  44         git clean -f -d -x
  45         )
  46  }
  47
  48 rule_vm_configure () {
  49         mk_reg mod=644 own=root:root /etc/xen/$vm_fqdn.cfg <<-EOF
  50                 #  -*- mode: python; -*-
  51                 # DOC: http://wiki.xen.org/wiki/Xen_Linux_PV_on_HVM_drivers
  52                 import os, re
  53                 name         = "$vm_fqdn"
  54                 arch         = os.uname()[4]
  55                 memory       = 2048
  56                 vcpus        = 1
  57                 pae          = 1
  58                 acpi         = 1
  59                 apic         = 1
  60                 vif          = ['mac=$vm_mac,bridge=$vm_bridge']
  61                 disk         = ['phy:/dev/domU/$vm_fqdn-disk,hda,w']
  62                 device_model = 'qemu-dm'
  63                 # HVM :
  64                 #kernel       = "/usr/lib/xen-4.0/boot/hvmloader"
  65                 #builder      = 'hvm'
  66                 #xen_platform_pci = 1 # NOTE: the guest VM can use optimized PV on HVM drivers
  67                 # PV :
  68                 #kernel       = "pv-grub.gz" # NOTE: pas encore dans Debian car il ne fonctionne qu'avec grub-legacy
  69                 #extra        = "(hd0,0)/grub/grub.cfg"
  70                 bootloader    = '/usr/bin/pygrub'
  71
  72                 # boot on floppy (a), hard disk (c) or CD-ROM (d)
  73                 #boot         = 'd'
  74
  75                 #vnc        = 1
  76                 #sdl        = 0
  77                 #vncconsole = 0
  78                 #vnclisten  = "0.0.0.0"
  79                 #vncpasswd  = ""
  80                 #usbdevice  = 'tablet'
  81
  82                 keymap      = 'fr'
  83                 serial      = 'pty'
  84                 on_poweroff = 'destroy'
  85                 on_reboot   = 'restart'
  86                 on_crash    = 'restart'
  87                 EOF
  88  }
  89 rule_vm_start () {
  90         test ! -e /dev/domU/$vm_fqdn-disk1
  91         sudo xm create $vm_fqdn.cfg
  92         rule vm_attach
  93  }
  94 rule_vm_attach () {
  95         assert '! pgrep -f "sudo xm console $vm_fqdn"'
  96         info 'Ctrl-] pour se détacher de la console'
  97         sudo xm console $vm_fqdn
  98  }
  99 rule_vm_stop () {
 100         sudo xm shutdown $vm_fqdn
 101  }
 102 rule_vm_stop_force () {
 103         sudo xm destroy $vm_fqdn
 104  }
 105
 106 rule_disk_mount () { # DESCRIPTION: montage du disque de la VM depuis l'hôte
 107         sudo kpartx -a -v /dev/domU/$vm_fqdn-disk
 108         #sudo xm block-attach 0 phy:/dev/domU/$vm_fqdn-disk $vm_dev_disk w
 109  }
 110 rule_disk_umount () { # DESCRIPTION: démontage du disque de la VM depuis l'hôte
 111         rule part_boot_umount
 112         case $vm_use_lvm in
 113          (yes)
 114                 rule part_lvm_umount
 115                 ;;
 116          (no)
 117                 rule part_root_umount
 118                 rule part_var_umount
 119                 rule part_home_umount
 120                 ;;
 121          (*) exit 1;;
 122          esac
 123         sudo kpartx -d -v /dev/domU/$vm_fqdn-disk
 124         #sudo xm block-detach 0 $vm_dev_disk
 125         # XXX: DANGEREUX ; si jamais il bloque parce que le disque était encore utilisé :
 126         #      utiliser xm block-detach 0 $vm_dev_disk --force ;
 127         #      ôter les éventuels mappages LVM concernés avec dmsetup table et dmsetup remove --force ;
 128         #      ôter les mappages concernés dans /etc/lvm/cache/.cache,
 129         #      et pour bien trouver tous les mappages :
 130         #        % sudo find /dev -type l -exec sh -c 'printf "%s -> " "$@"; readlink "$@"' - {} \; | grep $vm_dev_disk
 131         #      enfin, ôter l'éventuel verrou dans /var/lock/lvm/
 132  }
 133
 134 case $vm_use_lvm in
 135  (no)
 136         readonly vm_dev_disk_swap="${vm_dev_disk}5"
 137         readonly vm_dev_disk_root="${vm_dev_disk}6"
 138         readonly vm_dev_disk_var="${vm_dev_disk}7"
 139         readonly vm_dev_disk_home="${vm_dev_disk}8"
 140         ;;
 141  (yes)
 142         readonly vm_lvm_pv="${vm_dev_disk}2"
 143         readonly vm_dev_disk_swap=/dev/$vm_lvm_vg/${vm_lvm_lv}_swap
 144         readonly vm_dev_disk_root=/dev/$vm_lvm_vg/${vm_lvm_lv}_root
 145         readonly vm_dev_disk_var=/dev/$vm_lvm_vg/${vm_lvm_lv}_var
 146         readonly vm_dev_disk_home=/dev/$vm_lvm_vg/${vm_lvm_lv}_home
 147         ;;
 148  (*) exit 1;;
 149  esac
 150
 151 rule_disk_format () { # DESCRIPTION: partitionnage du disque de la VM
 152         case $vm_use_lvm in
 153         (no)
 154                 sudo sfdisk $vm_dev_disk <<-EOF
 155                         # partition table of $vm_dev_disk
 156                         unit: sectors
 157
 158                         ${vm_dev_disk}1 : start=       63, size=   497952, Id=83, bootable
 159                         ${vm_dev_disk}2 : start=   498015, size=418927005, Id= 5
 160                         ${vm_dev_disk}3 : start=        0, size=        0, Id= 0
 161                         ${vm_dev_disk}4 : start=        0, size=        0, Id= 0
 162                         ${vm_dev_disk}5 : start=   498078, size=  1959867, Id=82
 163                         ${vm_dev_disk}6 : start=  2458008, size= 29302497, Id=83
 164                         ${vm_dev_disk}7 : start= 31760568, size=  9767457, Id=83
 165                         ${vm_dev_disk}8 : start= 41528088, size=377896932, Id=83
 166                 EOF
 167                 ;;
 168         (yes)
 169                 sudo sfdisk $vm_dev_disk <<-EOF
 170                         # partition table of $vm_dev_disk
 171                         unit: sectors
 172
 173                         ${vm_dev_disk}1 : start=       63, size=   497952, Id=83, bootable
 174                         ${vm_dev_disk}2 : start=   498015, size=418927005, Id=8E
 175                         EOF
 176                 ;;
 177         (*) exit 1;;
 178          esac
 179         #sudo partprobe $vm_dev_disk
 180         sudo kpartx -u -v /dev/domU/$vm_fqdn-disk
 181  }
 182
 183 rule_part_lvm_format () {
 184         rule part_lvm_umount
 185         ! sudo vgs | grep -q "^  $vm_lvm_vg " ||
 186         sudo vgremove $vm_lvm_vg
 187         sudo pvcreate --dataalignment 512k $vm_lvm_pv
 188         sudo vgcreate --dataalignment 512k $vm_lvm_vg $vm_lvm_pv
 189         sudo lvcreate --contiguous y -n ${vm_lvm_lv}_swap -L  1G     $vm_lvm_vg
 190         sudo lvcreate --contiguous y -n ${vm_lvm_lv}_root -L 15G     $vm_lvm_vg
 191         sudo lvcreate --contiguous y -n ${vm_lvm_lv}_var  -L  5G     $vm_lvm_vg
 192         sudo lvcreate --contiguous y -n ${vm_lvm_lv}_home -l 99%FREE $vm_lvm_vg
 193         rule part_lvm_umount
 194  }
 195 rule_part_lvm_mount () {
 196         case $vm_use_lvm in
 197          (yes)
 198                 sudo vgchange -a y $vm_lvm_vg
 199                 ;;
 200          (*) exit 1;;
 201          esac
 202  }
 203 rule_part_lvm_umount () {
 204         case $vm_use_lvm in
 205          (yes)
 206                 rule part_root_umount
 207                 rule part_var_umount
 208                 rule part_home_umount
 209                 ! sudo vgs | grep -q "^  $vm_lvm_vg " ||
 210                 sudo vgchange -a n $vm_lvm_vg
 211                 ;;
 212          (*) exit 1;;
 213          esac
 214  }
 215
 216 rule_part_randomize () { # SYNTAX: $part # NOTE: à anticiper
 217         local part="$1"
 218         eval "sudo dd if=/dev/urandom of=\$vm_dev_disk_$part"
 219  }
 220 rule_part_randomize_stat () { # SYNTAX: $part # DESCRIPTION: fait afficher la progression de rule_part_randomize
 221         local part="$1"
 222         eval "pkill -USR1 -f \"^dd if=/dev/urandom of=\$vm_dev_disk_$part\""
 223  }
 224 rule__part_encrypted_format () { # SYNTAX: $part # DESCRIPTION: formatage d'une partition distincte de /
 225  # NOTE: la clef de chiffrement est dérivée de celle de /,
 226  #       / doit être déchiffrée pour que cela fonctionne.
 227         local part="$1"
 228         eval "local dev=\"\$vm_dev_disk_$part\""
 229         test ! -e /dev/mapper/${vm_lvm_lv}_root_deciphered ||
 230         sudo /bin/sh -c "/lib/cryptsetup/scripts/decrypt_derived ${vm_lvm_lv}_root_deciphered |
 231         cryptsetup luksFormat --hash=sha512 --key-size=512 \
 232          --cipher=aes-xts-essiv:sha256 --key-file=- --align-payload=8 $dev"
 233  }
 234 rule__part_encrypted_mount () { # SYNTAX: $part
 235         local part="$1"
 236         eval "local dev=\"\$vm_dev_disk_$part\""
 237         test -e /dev/mapper/${vm_lvm_lv}_${part}_deciphered ||
 238         sudo /bin/sh -c "/lib/cryptsetup/scripts/decrypt_derived ${vm_lvm_lv}_root_deciphered |
 239         cryptsetup luksOpen --key-file=- $dev ${vm_lvm_lv}_${part}_deciphered"
 240  }
 241 rule__part_encrypted_umount () { # SYNTAX: $part
 242         local part="$1"
 243         eval "local dev=\"\$vm_dev_disk_$part\""
 244         test ! -e     /dev/mapper/${vm_lvm_lv}_${part}_deciphered ||
 245         sudo cryptsetup luksClose ${vm_lvm_lv}_${part}_deciphered
 246  }
 247
 248 rule_part_root_format () {
 249         if ! mount | grep -q "^$vm_dev_disk_root "
 250          then
 251                 sudo cryptsetup luksFormat --hash=sha512 --key-size=512 \
 252                  --cipher=aes-xts-essiv:sha256 --key-file=- --align-payload=8 $vm_dev_disk_root
 253                 sudo cryptsetup luksOpen --key-file=- $vm_dev_disk_root ${vm_lvm_lv}_root_deciphered
 254                 sudo mke2fs -t ext4 -c -c -m 5 -T ext4 -b $vm_e2fs_block_size \
 255                  -E resize=30G${vm_e2fs_extended_options} \
 256                  -L ${vm_lvm_lv}_root \
 257                  /dev/mapper/${vm_lvm_lv}_root_deciphered
 258                 ! mountpoint -q /mnt/$vm_fqdn
 259                 sudo mount -v /dev/mapper/${vm_lvm_lv}_root_deciphered /mnt/$vm_fqdn
 260                 mk_dir mod=0770 own=root:root /mnt/$vm_fqdn/boot
 261                 mk_dir mod=0770 own=root:root /mnt/$vm_fqdn/dev
 262                 mk_dir mod=0770 own=root:root /mnt/$vm_fqdn/home
 263                 mk_dir mod=0770 own=root:root /mnt/$vm_fqdn/proc
 264                 mk_dir mod=0770 own=root:root /mnt/$vm_fqdn/sys
 265                 mk_dir mod=0770 own=root:root /mnt/$vm_fqdn/var
 266                 mk_dir mod=0770 own=root:root /mnt/$vm_fqdn/root
 267                 mk_dir mod=0770 own=root:root /mnt/$vm_fqdn/root/tool
 268                 mk_dir mod=0770 own=root:root /mnt/$vm_fqdn/root/tool/ateliers
 269                 sudo umount -v /mnt/$vm_fqdn
 270                 sudo cryptsetup luksClose ${vm_lvm_lv}_root_deciphered
 271          fi
 272  }
 273 rule_part_root_mount () {
 274         test -e /dev/mapper/${vm_lvm_lv}_root_deciphered ||
 275         sudo cryptsetup luksOpen $vm_dev_disk_root ${vm_lvm_lv}_root_deciphered
 276         mountpoint -q /mnt/$vm_fqdn ||
 277         sudo mount -v -t ext4 /dev/mapper/${vm_lvm_lv}_root_deciphered /mnt/$vm_fqdn
 278  }
 279 rule_part_root_umount () {
 280         ! mountpoint -q /mnt/$vm_fqdn ||
 281         sudo umount -v  /mnt/$vm_fqdn
 282         ! test -e     /dev/mapper/${vm_lvm_lv}_root_deciphered ||
 283         sudo cryptsetup luksClose ${vm_lvm_lv}_root_deciphered
 284  }
 285 rule_part_swap_format () {
 286         rule _part_encrypted_format swap
 287         rule _part_encrypted_mount  swap
 288         sudo mkswap -f -L ${vm_lvm_lv}_swap \
 289          /dev/mapper/${vm_lvm_lv}_swap_deciphered
 290         rule _part_encrypted_umount swap
 291  }
 292 rule_part_boot_format () {
 293         mount | grep -q "^$vm_dev_disk_boot " ||
 294         sudo mke2fs -t ext2 -c -c -m 5 -T small \
 295          -E resize=1G${vm_e2fs_extended_options} \
 296          -L ${vm_lvm_lv}_boot $vm_dev_disk_boot
 297  }
 298 rule_part_boot_mount () {
 299         mountpoint -q /mnt/$vm_fqdn
 300         test -d /mnt/$vm_fqdn/boot
 301         mountpoint -q                           /mnt/$vm_fqdn/boot ||
 302         sudo mount -v -t ext2 $vm_dev_disk_boot /mnt/$vm_fqdn/boot
 303  }
 304 rule_part_boot_umount () {
 305         ! mountpoint -q /mnt/$vm_fqdn/boot ||
 306         sudo umount -v  /mnt/$vm_fqdn/boot
 307  }
 308 rule_part_var_format () {
 309         rule _part_encrypted_format var
 310         rule _part_encrypted_mount  var
 311         sudo mke2fs -t ext4 -c -c -m 5 -T ext4 -b $vm_e2fs_block_size \
 312          -E resize=10G${vm_e2fs_extended_options} \
 313          -L ${vm_lvm_lv}_var \
 314          /dev/mapper/${vm_lvm_lv}_var_deciphered
 315         rule _part_encrypted_umount var
 316  }
 317 rule_part_var_mount () {
 318         rule _part_encrypted_mount var
 319         mountpoint -q /mnt/$vm_fqdn/var ||
 320         sudo mount -v -t ext4 /dev/mapper/${vm_lvm_lv}_var_deciphered /mnt/$vm_fqdn/var
 321  }
 322 rule_part_var_umount () {
 323         ! mountpoint -q /mnt/$vm_fqdn/var ||
 324         sudo umount -v  /mnt/$vm_fqdn/var
 325         rule _part_encrypted_umount var
 326  }
 327 rule_part_home_format () {
 328         rule _part_encrypted_format home
 329         rule _part_encrypted_mount  home
 330         sudo mke2fs -t ext4 -c -c -m 0 -T ext4 -b $vm_e2fs_block_size \
 331          -E resize=400G${vm_e2fs_extended_options} \
 332          -L ${vm_lvm_lv}_home \
 333          /dev/mapper/${vm_lvm_lv}_home_deciphered
 334          # NOTE: -O quota pas supporté par e2fsprogs/squeeze
 335         rule _part_encrypted_umount home
 336  }
 337 rule_part_home_mount () {
 338         rule _part_encrypted_mount home
 339         mountpoint -q /mnt/$vm_fqdn/home ||
 340         sudo mount -v -t ext4 /dev/mapper/${vm_lvm_lv}_home_deciphered /mnt/$vm_fqdn/home
 341  }
 342 rule_part_home_umount () {
 343         ! mountpoint -q /mnt/$vm_fqdn/home ||
 344         sudo umount -v  /mnt/$vm_fqdn/home
 345         rule _part_encrypted_umount home
 346  }
 347
 348 rule_debian_install () {
 349         rule disk_mount
 350         rule part_lvm_mount
 351         rule part_root_mount
 352         rule part_boot_mount
 353         rule part_var_mount
 354         sudo DEBOOTSTRAP_DIR=/usr/share/debootstrap/ LANG=C LC_CTYPE=C debootstrap \
 355          --arch=$vm_arch --verbose --keyring=/usr/share/keyrings/debian-archive-keyring.gpg \
 356          --exclude=vim-tiny \
 357          --include=$(printf '%s,' \
 358                  acl \
 359                  bsdmainutils \
 360                  busybox \
 361                  ca-certificates \
 362                  console-setup \
 363                  cryptsetup \
 364                  dash \
 365                  dnsutils \
 366                  dropbear \
 367                  etckeeper \
 368                  git-core \
 369                  gnupg \
 370                  hashalot \
 371                  htop \
 372                  ifupdown \
 373                  initramfs-tools \
 374                  kbd \
 375                  less \
 376                  locales \
 377                  lvm2 \
 378                  mosh \
 379                  molly-guard \
 380                  ncurses-term \
 381                  openssh-client \
 382                  openssh-server \
 383                  openssl \
 384                  pciutils \
 385                  procps \
 386                  quota \
 387                  quotatool \
 388                  rsync \
 389                  screen \
 390                  sudo \
 391                  sysprofile \
 392                  vim-nox \
 393                  wget \
 394                  zsh \
 395          ) \
 396          $vm_lsb_name /mnt/$vm_fqdn/ \
 397          http://ftp.fr.debian.org/debian/
 398         rule part_var_umount
 399         rule part_boot_umount
 400         rule part_root_umount
 401  }
 402
 403 rule_chroot () {
 404         rule disk_mount
 405         rule part_lvm_mount
 406         rule part_root_mount
 407         rule part_boot_mount
 408         rule part_var_mount
 409         #rule_part_home_mount
 410         mountpoint -q /mnt/$vm_fqdn/proc ||
 411         sudo mount -t proc proc /mnt/$vm_fqdn/proc
 412         mountpoint -q /mnt/$vm_fqdn/sys ||
 413         sudo mount -t sysfs sys /mnt/$vm_fqdn/sys
 414         mountpoint -q /mnt/$vm_fqdn/dev ||
 415         sudo mount --bind /dev /mnt/$vm_fqdn/dev
 416         if test -d /mnt/$vm_fqdn/root/tool/vm/.git
 417          then
 418                 mountpoint -q /mnt/$vm_fqdn/root/tool/vm ||
 419                 sudo mount --bind "$tool" /mnt/$vm_fqdn/root/tool/vm
 420          else
 421                 rsync -a "$tool"/ /mnt/$vm_fqdn/root/tool/vm
 422          fi
 423         sudo chroot /mnt/$vm_fqdn /bin/bash || true
 424         rule _chroot_clean
 425  }
 426 rule__chroot_clean () {
 427         ! sudo mountpoint -q /mnt/$vm_fqdn/root/tool/vm ||
 428         sudo umount -v /mnt/$vm_fqdn/root/tool/$vm
 429         ! mountpoint -q /mnt/$vm_fqdn/dev ||
 430         sudo umount -v /mnt/$vm_fqdn/dev
 431         ! mountpoint -q /mnt/$vm_fqdn/sys ||
 432         sudo umount -v /mnt/$vm_fqdn/sys
 433         ! mountpoint -q /mnt/$vm_fqdn/proc ||
 434         sudo umount -v /mnt/$vm_fqdn/proc
 435         rule part_home_umount
 436         rule part_var_umount
 437         rule part_boot_umount
 438         rule part_root_umount
 439         rule disk_umount
 440  }
 441
 442 rule=${1:-help}
 443 ${1+shift}
 444 case $rule in
 445  (help);;
 446  (*)
 447         assert 'test "$(hostname --fqdn)" = "$vm_host"' vm_host
 448         ;;
 449  esac
 450 rule $rule "$@"