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

   1 #!/bin/bash
   2 # note, this script gets piped to bash, so cant cd to current dir
   3 set -eE -o pipefail
   4 trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
   5
   6 kgped16=false
   7 fai_action=install
   8 fai_reboot_arg=,reboot
   9 while [[ $1 == -* ]]; do
  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_reboot_arg=
  18       shift
  19       ;;
  20     -i) #inventory
  21       fai_action=inventory
  22       fai_reboot_arg=
  23       shift
  24       ;;
  25     -k)
  26       kgped16=true;
  27       shift
  28       ;;
  29   esac
  30 done
  31
  32 [[ $EUID == 0 ]] || exec sudo "${BASH_SOURCE}" "$@"
  33
  34 e() {
  35   echo "$*"
  36   if ! "$@"; then
  37     echo "$0: error: exit code $? from: $*"
  38     exit 1
  39   fi
  40 }
  41
  42 host=$1
  43
  44 rm -f /srv/tftp/fai/pxelinux.cfg/*
  45 if [[ ! $1 ]]; then
  46   echo "$0: clearing pxe config and exiting"
  47   exit 0
  48 fi
  49
  50 # assuming ipv4, or else we might need to deal with multiple addresses
  51 # in an ipv4 + ipv6 network.
  52 my_ip=$(ip -4 route get 8.8.8.8 | sed -nr 's,^.*src\s+(\S+).*,\1,p')
  53 if [[ ! $my_ip || $my_ip =~ [[:space:]] ]]; then
  54   echo "$0: error: failed to get \$my_ip, got: $my_ip"
  55   exit 1
  56 fi
  57
  58 if [[ $host == default ]]; then
  59   ip='*'
  60 elif [[ $host == [0-9]*.[0-9]*.[0-9]*.[0-9]* ]]; then
  61   ip=$host/32
  62 else
  63   type -t host &>/dev/null || apt-get -y install dnsutils
  64   ip=$(host $host | sed -rn 's/^\S+ has address //p;T;q' ||:)
  65   if [[ ! $ip || $ip =~ [[:space:]] ]]; then
  66     echo "$0: error: failed to get \$ip, got: $ip"
  67     exit 1
  68   fi
  69   ip=$ip/32
  70 fi
  71
  72 if modprobe nfsd &>/dev/null; then
  73   std_arg="-u nfs://faiserver/srv/fai/config"
  74   # nfsv4 wont do rw with overlayfs yet
  75   # https://lists.uni-koeln.de/pipermail/linux-fai/2017-March/011641.html
  76   root_arg="$my_ip:/srv/fai/nfsroot:vers=3"
  77   # fai-setup without -e sets the ip to the local_ip/local_network, eg 192.168.1.3/24
  78   # I restrict it to one ip as simple but imperfect access control.
  79
  80   # we may chattr +i /etc/exports if we dun want it modified
  81   # for example, if we made these exports more widely available
  82   # while doing multiple installs or a recovery.
  83   if [[ -w /etc/exports ]]; then
  84     sed -ri --follow-symlinks '\%^/srv/fai/%d' /etc/exports
  85     cat >>/etc/exports <<EOF
  86 /srv/fai/config $ip(async,ro,no_subtree_check)
  87 /srv/fai/nfsroot $ip(async,ro,no_subtree_check,no_root_squash)
  88 EOF
  89     exportfs -ra
  90   fi
  91   systemctl start nfs-server # assumes recent os
  92 else
  93   std_arg="-u http://faiserver:8080/config.tar.gz"
  94   root_arg="live:http://faiserver:8080/squash.img"
  95   /a/exe/web-conf -i -p 8080 - apache2 faiserver <<EOF
  96 <Location />
  97     Deny from all
  98     Allow from $ip
  99 </Location>
 100 EOF
 101 fi
 102
 103
 104
 105 # man page doesn't explain this, but this deletes & thus disables
 106 # all chboot systems.
 107 e fai-chboot -iv $std_arg default # set it to default to get a val out of it next
 108 kernel=$(fai-chboot -L '^default$' | awk '{print $3}')
 109 default_k_args=$(fai-chboot -L '^default$' | \
 110                    sed -r "s/^(\S+\s+){3}(.*)/\2/")
 111 # example of default_k_args
 112 # initrd=initrd.img-3.16.0-4-amd64 ip=dhcp root=192.168.1.3:/srv/fai/nfsroot aufs FAI_CONFIG_SRC=nfs://faiserver/srv/fai/config FAI_ACTION=install
 113
 114 k_args=(FAI_ACTION=$fai_action)
 115 if $kgped16; then
 116   k_args+=(console=tty0 console=ttyS0,115200)
 117 fi
 118
 119 for arg in $default_k_args; do
 120   case $arg in
 121     # default root arg is /srv/fai/nfsroot
 122     root=*) k_args+=(root=$root_arg) ;;
 123     *) k_args+=($arg) ;;
 124   esac
 125 done
 126 rm -f /srv/tftp/fai/pxelinux.cfg/*
 127 e fai-chboot -k "${k_args[*]}" -v -f verbose,sshd,createvt$fai_reboot_arg $std_arg $kernel "$host"
 128
 129 # this is needed for autodiscover iso. i'm not sure, it might override
 130 # the fai-chboot method of setting this, i'm not sure.
 131 echo FAI_ACTION=$fai_action >> /srv/fai/config/class/LAST.var