iankelling.org Git - automated-distro-installer/blob - myfai-chboot-local

   1 #!/bin/bash
   2
   3 set -eE -o pipefail
   4 trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
   5
   6 case $1 in
   7     -h|--help)
   8         echo "see help from myfai-chboot"
   9         exit 0
  10         ;;
  11 esac
  12
  13 [[ $EUID == 0 ]] || exec sudo "${BASH_SOURCE}" "$@"
  14
  15 e() { echo "$@"; "$@"; }
  16
  17
  18 rm -f /srv/tftp/fai/pxelinux.cfg/*
  19 if [[ ! $1 ]]; then
  20     exit 0
  21 fi
  22
  23 host=$1
  24 ip=$(getent hosts $host | awk '{print $1}')
  25
  26 std_arg="-u nfs://faiserver/srv/fai/config"
  27 e fai-chboot -Iv $std_arg default # set it to default to get a val out of it next
  28 kernel=$(fai-chboot -L '^default$' | awk '{print $3}')
  29 # man page doesn't explain this, but this deletes & thus disables
  30 # all chboot systems.
  31 type -t host &>/dev/null || apt-get -y install dnsutils
  32 gateway_ip=$(route -n | sed -rn 's/^0\.0\.0\.0\s+(\S+).*/\1/p')
  33 my_ip=$(host faiserver $gateway_ip | sed -rn 's/^\S+ has address //p')
  34 k_args=$(fai-chboot -L '^default$' | \
  35              sed -r "s/^(\S+\s+){3}(.*root=)(.*)/\2$my_ip:\3/")
  36 rm -f /srv/tftp/fai/pxelinux.cfg/*
  37 e fai-chboot -k "$k_args" -v -f verbose,sshd,createvt,reboot $std_arg $kernel "$host"
  38
  39 # fai-setup without -e sets the ip to the local_ip/local_network, eg 192.168.1.3/24
  40 # I restrict it to one ip as simple but imperfect access control.
  41 sed -ri --follow-symlinks '\%^/srv/fai/%d' /etc/exports
  42 cat >>/etc/exports <<EOF
  43 /srv/fai/config $ip/32(async,ro,no_subtree_check)
  44 /srv/fai/nfsroot $ip/32(async,ro,no_subtree_check,no_root_squash)
  45 EOF
  46 exportfs -ra
  47
  48
  49 # todo, remove the nopxe script. adjust fai-check to reboot if it fails on the kexec.