iankelling.org Git - automated-distro-installer/blob - faiserver-setup

   1 #!/bin/bash
   2 # Copyright (C) 2018 Ian Kelling
   3
   4 # This program is free software; you can redistribute it and/or
   5 # modify it under the terms of the GNU General Public License
   6 # as published by the Free Software Foundation; either version 2
   7 # of the License, or (at your option) any later version.
   8
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program; if not, write to the Free Software
  16 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  17
  18 x="$(readlink -f "$BASH_SOURCE")"; source "${x%/*}/bash-trace"
  19
  20 [[ $EUID == 0 ]] || exec sudo -E "${BASH_SOURCE[0]}" "$@"
  21
  22 LC_USEBASHRC=t; . ~/.bashrc
  23
  24 usage() {
  25   cat <<EOF
  26 usage: ${0##*/} [-h|--help] [BASE_CODENAME] [ARCH]
  27 install fai-server on the current machine
  28
  29 Initial setup of a fai server. works on localhost.  Set's the current ip
  30 as the tftp server. I vaguely remember that using a hostname does not
  31 work.  Separate from running this, faiserver needs to be setup in dns to
  32 point to whatever host this is run on.
  33
  34 Default BASE_CODENAME is buster. Default ARCH is 64. The script expects corresponding
  35 $BASEFILE_DIR/${UPCASED_BASE_CODENAME}${ARCH}.tar.(gz|xz) to exist, and it must have been
  36 generated around the same time as the nfsroot, at least so it has the
  37 same kernel version.
  38
  39 EOF
  40   exit $1
  41 }
  42 case $1 in
  43   -h|--help) usage ;;
  44 esac
  45
  46
  47 e() { echo "+ $@"; "$@"; }
  48
  49
  50 base=${1:-buster}
  51 arch=${2:-64}
  52
  53 if [[ $base == [[:upper:]] ]]; then
  54   echo $0: error: use lowercase base
  55   exit 1
  56 fi
  57
  58 basefile=($BASEFILE_DIR/${base^^}${arch^^}.tar.gz)
  59 sed="sed -ri --follow-symlinks"
  60
  61 if [[ ! -e $basefile ]]; then
  62   printf "%s\n" "$0: error basefile=$basefile  does not exist" >&2
  63   exit 1
  64 fi
  65
  66 if [[ ! -d $BASEFILE_DIR ]]; then
  67   printf "%s\n" "$0: error BASEFILE_DIR=$BASEFILE_DIR  does not exist" >&2
  68   exit 1
  69 fi
  70
  71
  72 if ! type -p wget &>/dev/null; then
  73   apt-get install -y wget
  74 fi
  75
  76 armhf() {
  77   [[ $(dpkg --print-architecture) == armhf ]]
  78 }
  79
  80 if grep -xFq 'VERSION="8 (jessie)"' /etc/os-release; then
  81   gpg -a --recv-keys 2BF8D9FE074BCDE4; gpg -a --export 2BF8D9FE074BCDE4 | apt-key add -
  82   cat >/etc/apt/sources.list.d/fai.list <<'EOF'
  83 deb https://fai-project.org/download jessie koeln
  84 EOF
  85 elif grep -iE 'VERSION=.*(stretch|flidas|xenail|buster|bullseye|etiona)' /etc/os-release; then
  86   # fai on ubuntu only has official support using the universe repo, but newer
  87   # tends to have less bugs.
  88   wget -O - https://fai-project.org/download/2BF8D9FE074BCDE4.asc | apt-key add -
  89
  90   case $base in
  91     stretch|buster|bullseye)
  92       cat >/etc/apt/sources.list.d/fai.list <<EOF
  93 deb https://fai-project.org/download $base koeln
  94 EOF
  95       ;;
  96     *)
  97       echo "$0: error: script needs updating for new base" >&2
  98       exit 1
  99       ;;
 100   esac
 101 else
 102   rm -f /etc/apt/sources.list.d/fai.list
 103 fi
 104
 105 apt-get update
 106
 107 # Relevant packages from fai-quickstart depends and fai-server recommends.
 108 # I especially do not wait isc-dhcp-server or an inetd. Also excludes
 109 # nfs-kernel-server. On an android chroot, we don\'t have nfs in the
 110 # kernel, or the ability to install it.
 111 # xorriso is for running fai-cd -a, not strictly need for fai-server
 112 # perl-tk is for fai-monitor-gui
 113 pkgs=(fai-doc tftpd-hpa tar reprepro squashfs-tools binutils xorriso)
 114 if modprobe nfsd &>/dev/null; then
 115   pkgs+=(nfs-kernel-server)
 116 else
 117   pkgs+=(apache2)
 118 fi
 119
 120
 121 e apt-get install -y ${pkgs[@]}
 122 # confnew since we edit /etc/fai/NFSROOT in an automated way
 123 # fai-client is already a fai-server dependency, but make sure it gets upgraded
 124 e apt-get install --no-install-recommends -y -o Dpkg::Options::=--no-force-confdef -o Dpkg::Options::=--force-confnew fai-server fai-client
 125
 126 r=http://http.us.debian.org/debian
 127 # like default, but scrap httpredir, and nonfree.
 128 # All my systems should be able to get along without nonfree
 129 # for a base working system afaik.
 130
 131 cat >/etc/fai/apt/sources.list <<EOF
 132 deb $r $base main contrib
 133 EOF
 134 case $base in
 135   jessie|stretch|buster)
 136     cat >>/etc/fai/apt/sources.list <<EOF
 137 deb http://security.debian.org/debian-security $base/updates main contrib
 138 EOF
 139     ;;
 140   *)
 141     # new naming convention
 142     cat >>/etc/fai/apt/sources.list <<EOF
 143 deb http://security.debian.org/debian-security $base-security main contrib
 144 EOF
 145 esac
 146
 147
 148 cat >>/etc/fai/apt/sources.list <<EOF
 149 # use fai repo. it's commented in the defaults. it's got bug fixes.
 150 # and may contain newer packages.
 151 deb http://fai-project.org/download $base koeln
 152 EOF
 153
 154 if [[ $base == jessie ]]; then
 155   cat >>/etc/fai/apt/sources.list <<'EOF'
 156 # fix tar https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=819978
 157 deb http://ftp.debian.org/debian jessie-backports main
 158 EOF
 159   # note, fai doesn\'t look at /etc/fai/apt/preferences.d
 160   cat >/etc/fai/apt/preferences <<'EOF'
 161 Package: tar
 162 Pin: release a=jessie-backports
 163 Pin-Priority: 500
 164 EOF
 165 fi
 166
 167
 168 $sed -f - /etc/fai/nfsroot.conf <<EOF
 169 $ a FAI_ROOTPW='$(</q/root/shadow/standard)'
 170 /^\s*FAI_ROOTPW/d
 171 $ a SSH_IDENTITY=/root/.ssh/home.pub
 172 /^\s*SSH_IDENTITY/d
 173 s,^( *FAI_DEBOOTSTRAP=).*,\1"$base $r",
 174 # add --arch amd64. this is needed on arm system which is
 175 # used to install amd64 clients. On amd64 servers, it's redundant.
 176 # disabled for now, since creating fai nfsroot on my arm machine
 177 # is not working
 178 #/--arch amd64/!s/^(\s*FAI_DEBOOTSTRAP_OPTS=")/\1--arch amd64 /
 179 EOF
 180
 181 $sed 's/#LOGUSER/LOGUSER/' /etc/fai/fai.conf
 182 $sed -i '/^LOGUSER=/d' /etc/fai/fai.conf
 183 $sed -i '/^FAI_FLAGS=/d' /etc/fai/fai.conf
 184 echo "FAI_FLAGS=verbose" >>/etc/fai/fai.conf
 185 # note if this isnt set, the user isnt created
 186 echo "LOGUSER=fai" >>/etc/fai/fai.conf
 187
 188 # from man fai-make-nfsroot,
 189 # figured out after partitioning ignored my crypt partition
 190
 191
 192 cedit /etc/fai/NFSROOT <<'EOF' || [[ $? == 1 ]]
 193 # inserted by faserver-setup
 194 PACKAGES install
 195 cryptsetup
 196 # default one is linux-image-server, doesnt exist anymore
 197 linux-image-amd64
 198 # default is btrfs-tools which doesnt exist anymore
 199 btrfs-progs
 200 iw
 201 # got an error in error.log about not having gpg.
 202 # system seemed to still install ok, so i havent tested if this fixes it.
 203 gpg
 204 EOF
 205
 206 if armhf; then
 207   cd /srv/fai
 208   e rm -rf nfsroot
 209   e tar Jxf $basefile
 210   # background: Can't build the nfsroot on my arm system now.  First,
 211   # fai-make-nfsroot won't work out of the box. One idea to make it work
 212   # is by installing qemu-user-static, then copying qemu-x86_64-static
 213   # into the nfsroot, and prepending it to chroot commands in
 214   # fai-make-nfsroot, but that fails in odd ways. ls has permissions
 215   # problems on reading directories, various programs segfault
 216   # immediately, cat can't open a file, etc.
 217
 218   NFSROOT=/srv/fai/nfsroot
 219   TFTPROOT=/srv/tftp/fai
 220
 221   # test if our copy of setup_tftp has changed in fai-make-nfsroot,
 222   # and if not, run it.
 223   setup_tftp(){
 224
 225     # tftp environment
 226     local pxebin
 227
 228     # wheezy path
 229     if [ -f $NFSROOT/usr/lib/PXELINUX/pxelinux.0 ]; then
 230       pxebin=$NFSROOT/usr/lib/PXELINUX/pxelinux.0
 231     else
 232       # jessie+ path
 233       pxebin=$NFSROOT/usr/lib/syslinux/pxelinux.0
 234     fi
 235
 236     rm -f $NFSROOT/boot/*.bak
 237     mkdir -p $TFTPROOT/pxelinux.cfg
 238     if ! chmod a+r $NFSROOT/boot/initrd.img-*; then
 239       echo "$0: error: No initrd was created. Check the package name of the linux-image package in /etc/fai/NFSROOT."
 240       exit 1
 241     fi
 242     cp -p $v $NFSROOT/boot/vmlinu?-* $NFSROOT/boot/initrd.img-* $TFTPROOT
 243     cp -u $pxebin $TFTPROOT
 244     if [ -f $NFSROOT/usr/lib/syslinux/modules/bios/ldlinux.c32 ]; then
 245       cp -u $NFSROOT/usr/lib/syslinux/modules/bios/ldlinux.c32 $TFTPROOT
 246     fi
 247     if [ X$verbose = X1 ]; then
 248       echo "TFTP environment prepared. Enable DHCP and start the TFTP daemon on root $TFTPROOT."
 249     fi
 250   }
 251   diff -u <(type setup_tftp) <(cat <(sed -n '/^setup_tftp(){/,/^}/p' $(which fai-make-nfsroot) ) - <<'EOF' |bash
 252 type setup_tftp
 253 EOF
 254                               )
 255   e setup_tftp
 256
 257   # -g causes skipping set_root_pw() in fai-make-nfsroot, -ag
 258   # is the only way to make it run without chrooting. the options
 259   # seem contradictory, but it works.
 260   e fai-setup -evag
 261
 262 else # not armhf
 263   # note, this copies the -B arg to
 264   # /srv/fai/nfsroot/var/tmp/base.tar.xz
 265   e fai-setup -evf -B $basefile
 266   # fai-setup expert mode avoids writing to /var/log/fai/variables
 267   # at least config_src is needed for autodiscover
 268   $sed '/^FAI_CONFIGDIR|^FAI_CONFIG_SRC|^LOGUSER/d' /var/log/fai/variables
 269   tee -a /var/log/fai/variables <<'EOF'
 270 LOGUSER=fai
 271 FAI_CONFIGDIR=/srv/fai/config
 272 FAI_CONFIG_SRC=nfs://faiserver/srv/fai/config
 273 EOF
 274   # make the faiserver also the apt proxy server
 275   apt-get -y install apt-cacher-ng
 276 fi
 277
 278 rm -f /srv/fai/nfsroot/root/.ssh/known_hosts
 279 key=$(ssh-keyscan localhost |& grep -o "ecdsa-sha2-nistp256.*")
 280 for ip in faiserver $(ip addr show up| grep -w '^ *inet' | awk '{print $2}'| cut -d / -f 1 | grep -vF 127.0.0.1); do
 281   echo "$ip $key" >>/srv/fai/nfsroot/root/.ssh/known_hosts
 282 done
 283
 284
 285 # serial console
 286 # mainly from
 287 # https://wiki.archlinux.org/index.php/working_with_the_serial_console
 288 # at runtime, running this from ssh worked:
 289 # https://unix.stackexchange.com/questions/242778/what-is-the-easiest-way-to-configure-serial-port-on-linux
 290 # stty -F /dev/ttyS0 115200 cs8 -cstopb -parenb
 291 # /sbin/agetty 115200 ttyS0 linux
 292 # dated info, but validation that this might work on debian:
 293 # https://help.ubuntu.com/community/SerialConsoleHowto
 294 # note in the nfsroot, systemd is not running.
 295 echo "c0:2345:respawn:/sbin/agetty 115200 ttyS0 linux" >>/srv/fai/nfsroot/etc/inittab
 296
 297 # initially did the basic fai-chboot -Iv $std_arg default
 298 # but found in console that it wanted to mount nfsroot
 299 # to be the same as my dhcp server.
 300 # Figured out to change the root= parameter from googling,
 301 # and seeing fai-chboot -L
 302 # using hostname failed.
 303 # for -f, combined the 2 defaults so it will reboot and print to screen.
 304
 305 # Add debug to -f flag for more verbose output.
 306
 307
 308 # background on choosing apt-cacher-ng:
 309 # googling around a bit finds 2 main solutions:
 310 # http://askubuntu.com/questions/3503/best-way-to-cache-apt-downloads-on-a-lan
 311 # apt-cacher-ng doesn\'t have zeroconf.
 312 # It touts having minimal dependencies, but I don\'t care.
 313 # The downside to squid-deb-proxy is that it\'s config is for specific repos,
 314 # you have to add all the repos you use.
 315 # That is the main reason I use apt-cacher-ng.
 316 # It has a web portal, at http://faiserver:3142/acng-report.html
 317
 318
 319 # random fai note: as far as I can tell, profiles are just for putting
 320 # in a selectable boot menu, which I don\'t want.
 321
 322 # the logsave prompted because the hostname faiserver was uknown.
 323 # Here it was faiserver.lan when running from a faiserver vm.
 324 # When running from a normal host with faiserver alias, it was the normal hosts name.
 325 $sed 's/(^[^,]+,)\S+/\1faiserver/' /srv/fai/nfsroot/root/.ssh/known_hosts
 326 # ditch the logo banner up top which screws with less.
 327 touch /srv/fai/nfsroot/.nocolorlogo