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