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
   4 [[ $EUID == 0 ]] || exec sudo "${BASH_SOURCE}" "$@"
   5
   6 set -eE -o pipefail
   7 trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
   8
   9 kgped16=false
  10 fai_action=install
  11 fai_reboot_arg=,reboot
  12 while [[ $1 == -* ]]; do
  13   case $1 in
  14     -h|--help)
  15       echo "see help from myfai-chboot"
  16       exit 0
  17       ;;
  18     -S)
  19       fai_action=sysinfo
  20       fai_reboot_arg=
  21       shift
  22       ;;
  23     -i) #inventory
  24       fai_action=inventory
  25       fai_reboot_arg=
  26       shift
  27       ;;
  28     -k)
  29       kgped16=true;
  30       shift
  31       ;;
  32   esac
  33 done
  34
  35 e() {
  36   echo "$*"
  37   if ! "$@"; then
  38     echo "$0: error: exit code $? from: $*"
  39     exit 1
  40   fi
  41 }
  42
  43 host=$1
  44
  45 rm -f /srv/tftp/fai/pxelinux.cfg/*
  46 if [[ ! $1 ]]; then
  47   echo "$0: clearing pxe config and exiting"
  48   exit 0
  49 fi
  50
  51 # assuming ipv4, or else we might need to deal with multiple addresses
  52 # in an ipv4 + ipv6 network.
  53 my_ip=$(ip -4 route get 8.8.8.8 | sed -nr 's,^.*src\s+(\S+).*,\1,p')
  54 if [[ ! $my_ip || $my_ip =~ [[:space:]] ]]; then
  55   echo "$0: error: failed to get \$my_ip, got: $my_ip"
  56   exit 1
  57 fi
  58
  59 if [[ $host == default ]]; then
  60   ip='*'
  61 elif [[ $host == [0-9]*.[0-9]*.[0-9]*.[0-9]* ]]; then
  62   ip=$host/32
  63 else
  64   type -t host &>/dev/null || apt-get -y install dnsutils
  65   ip=$(host $host | sed -rn 's/^\S+ has address //p;T;q' ||:)
  66   if [[ ! $ip || $ip =~ [[:space:]] ]]; then
  67     echo "$0: error: failed to get \$ip, got: $ip"
  68     exit 1
  69   fi
  70   ip=$ip/32
  71 fi
  72
  73 if modprobe nfsd &>/dev/null; then
  74   std_arg="-u nfs://faiserver/srv/fai/config"
  75   # nfsv4 wont do rw with overlayfs yet
  76   # https://lists.uni-koeln.de/pipermail/linux-fai/2017-March/011641.html
  77   root_arg="$my_ip:/srv/fai/nfsroot:vers=3"
  78   # fai-setup without -e sets the ip to the local_ip/local_network, eg 192.168.1.3/24
  79   # I restrict it to one ip as simple but imperfect access control.
  80
  81   # we may chattr +i /etc/exports if we dun want it modified
  82   # for example, if we made these exports more widely available
  83   # while doing multiple installs or a recovery.
  84   if [[ -w /etc/exports ]]; then
  85     sed -ri --follow-symlinks '\%^/srv/fai/%d' /etc/exports
  86     cat >>/etc/exports <<EOF
  87 /srv/fai/config $ip(async,ro,no_subtree_check)
  88 /srv/fai/nfsroot $ip(async,ro,no_subtree_check,no_root_squash)
  89 EOF
  90     exportfs -ra
  91   fi
  92   systemctl start nfs-server # assumes recent os
  93 else
  94   std_arg="-u http://faiserver:8080/config.tar.gz"
  95   root_arg="live:http://faiserver:8080/squash.img"
  96   /a/exe/web-conf -i -p 8080 - apache2 faiserver <<EOF
  97 <Location />
  98     Deny from all
  99     Allow from $ip
 100 </Location>
 101 EOF
 102 fi
 103
 104
 105
 106 # man page doesn't explain this, but this deletes & thus disables
 107 # all chboot systems.
 108 e fai-chboot -iv $std_arg default # set it to default to get a val out of it next
 109 kernel=$(fai-chboot -L '^default$' | awk '{print $3}')
 110 default_k_args=$(fai-chboot -L '^default$' | \
 111                    sed -r "s/^(\S+\s+){3}(.*)/\2/")
 112 # example of default_k_args
 113 # initrd=initrd.img-3.16.0-4-amd64 ip=dhcp root=192.168.1.3:/srv/fai/nfsroot aufs FAI_CONFIG_SRC=nfs://faiserver/srv/fai/config FAI_ACTION=install
 114
 115 k_args=(FAI_ACTION=$fai_action)
 116 if $kgped16; then
 117   k_args+=(console=tty0 console=ttyS0,115200)
 118 fi
 119
 120 for arg in $default_k_args; do
 121   case $arg in
 122     # default root arg is /srv/fai/nfsroot
 123     root=*) k_args+=(root=$root_arg) ;;
 124     *) k_args+=($arg) ;;
 125   esac
 126 done
 127 rm -f /srv/tftp/fai/pxelinux.cfg/*
 128 e fai-chboot -k "${k_args[*]}" -v -f verbose,sshd,createvt$fai_reboot_arg $std_arg $kernel "$host"
 129
 130 # this is needed for autodiscover iso. i'm not sure, it might override
 131 # the fai-chboot method of setting this, i'm not sure.
 132 echo FAI_ACTION=$fai_action >> /srv/fai/config/class/LAST.var