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