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

   1 #!/bin/bash
   2
   3 # note, this script gets piped to bash, so cant cd to current dir
   4 set -eE -o pipefail
   5 trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
   6
   7 fai_action=install
   8 fai_reboot_arg=,reboot
   9 case $1 in
  10   -h|--help)
  11     echo "see help from myfai-chboot"
  12     exit 0
  13     ;;
  14   -S)
  15     fai_action=sysinfo
  16     fai_reboot_arg=
  17     shift
  18     ;;
  19   -i) #inventory
  20     fai_action=inventory
  21     fai_reboot_arg=
  22     shift
  23     ;;
  24 esac
  25
  26 [[ $EUID == 0 ]] || exec sudo "${BASH_SOURCE}" "$@"
  27
  28 e() {
  29   echo "$*"
  30   if ! "$@"; then
  31     echo "$0: error: exit code $? from: $*"
  32     exit 1
  33   fi
  34 }
  35
  36 host=$1
  37
  38 # assuming ipv4, or else we might need to deal with multiple addresses
  39 # in an ipv4 + ipv6 network.
  40 my_ip=$(ip -4 route get 8.8.8.8 | sed -nr 's,^.*src\s+(\S+).*,\1,p')
  41 if [[ ! $my_ip || $my_ip =~ [[:space:]] ]]; then
  42   echo "$0: error: failed to get \$my_ip, got: $my_ip"
  43   exit 1
  44 fi
  45
  46 if [[ $host == default ]]; then
  47   ip='*'
  48 elif [[ $host == [0-9]*.[0-9]*.[0-9]*.[0-9]* ]]; then
  49   ip=$host/32
  50 else
  51   type -t host &>/dev/null || apt-get -y install dnsutils
  52   ip=$(host $host | sed -rn 's/^\S+ has address //p;T;q' ||:)
  53   if [[ ! $ip || $ip =~ [[:space:]] ]]; then
  54     echo "$0: error: failed to get \$ip, got: $ip"
  55     exit 1
  56   fi
  57   ip=$ip/32
  58 fi
  59
  60 if modprobe nfsd &>/dev/null; then
  61   std_arg="-u nfs://faiserver/srv/fai/config"
  62   # nfsv4 wont do rw with overlayfs yet
  63   # https://lists.uni-koeln.de/pipermail/linux-fai/2017-March/011641.html
  64   root_arg="$my_ip:/srv/fai/nfsroot:vers=3"
  65   # fai-setup without -e sets the ip to the local_ip/local_network, eg 192.168.1.3/24
  66   # I restrict it to one ip as simple but imperfect access control.
  67
  68   # we may chattr +i /etc/exports if we dun want it modified
  69   # for example, if we made these exports more widely available
  70   # while doing multiple installs or a recovery.
  71   if [[ -w /etc/exports ]]; then
  72     sed -ri --follow-symlinks '\%^/srv/fai/%d' /etc/exports
  73     cat >>/etc/exports <<EOF
  74 /srv/fai/config $ip(async,ro,no_subtree_check)
  75 /srv/fai/nfsroot $ip(async,ro,no_subtree_check,no_root_squash)
  76 EOF
  77     exportfs -ra
  78   fi
  79   systemctl start nfs-server # assumes recent os
  80 else
  81   std_arg="-u http://faiserver:8080/config.tar.gz"
  82   root_arg="live:http://faiserver:8080/squash.img"
  83   /a/exe/web-conf -i -p 8080 - apache2 faiserver <<EOF
  84 <Location />
  85     Deny from all
  86     Allow from $ip
  87 </Location>
  88 EOF
  89 fi
  90
  91 rm -f /srv/tftp/fai/pxelinux.cfg/*
  92 if [[ ! $1 ]]; then
  93   exit 0
  94 fi
  95
  96
  97 # man page doesn't explain this, but this deletes & thus disables
  98 # all chboot systems.
  99 e fai-chboot -iv $std_arg default # set it to default to get a val out of it next
 100 kernel=$(fai-chboot -L '^default$' | awk '{print $3}')
 101 default_k_args=$(fai-chboot -L '^default$' | \
 102                    sed -r "s/^(\S+\s+){3}(.*)/\2/")
 103 # example of default_k_args
 104 # initrd=initrd.img-3.16.0-4-amd64 ip=dhcp root=192.168.1.3:/srv/fai/nfsroot aufs FAI_CONFIG_SRC=nfs://faiserver/srv/fai/config FAI_ACTION=install
 105
 106 k_args=(console=tty0 console=ttyS0,115200 FAI_ACTION=$fai_action)
 107 for arg in $default_k_args; do
 108   case $arg in
 109     # default root arg is /srv/fai/nfsroot
 110     root=*) k_args+=(root=$root_arg) ;;
 111     *) k_args+=($arg) ;;
 112   esac
 113 done
 114 rm -f /srv/tftp/fai/pxelinux.cfg/*
 115 e fai-chboot -k "${k_args[*]}" -v -f verbose,sshd,createvt$fai_reboot_arg $std_arg $kernel "$host"
 116
 117 # this is needed for autodiscover iso. i'm not sure, it might override
 118 # the fai-chboot method of setting this, i'm not sure.
 119 echo FAI_ACTION=$fai_action >> /srv/fai/config/class/LAST.var