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 host=$1
  18
  19 type -t host &>/dev/null || apt-get -y install dnsutils
  20 ip=$(host $host | sed -rn 's/^\S+ has address //p;T;q')
  21 gateway_ip=$(route -n | sed -rn 's/^0\.0\.0\.0\s+(\S+).*/\1/p')
  22 my_ip=$(host faiserver $gateway_ip | sed -rn 's/^\S+ has address //p;T;q')
  23
  24 if modprobe nfsd &>/dev/null; then
  25     std_arg="-u nfs://faiserver/srv/fai/config"
  26     root_arg="$my_ip:/srv/fai/nfsroot"
  27     # fai-setup without -e sets the ip to the local_ip/local_network, eg 192.168.1.3/24
  28     # I restrict it to one ip as simple but imperfect access control.
  29     sed -ri --follow-symlinks '\%^/srv/fai/%d' /etc/exports
  30     cat >>/etc/exports <<EOF
  31 /srv/fai/config $ip/32(async,ro,no_subtree_check)
  32 /srv/fai/nfsroot $ip/32(async,ro,no_subtree_check,no_root_squash)
  33 EOF
  34     exportfs -ra
  35 else
  36     std_arg="-u http://faiserver:8080/config.tar.gz"
  37     root_arg="live:http://faiserver:8080/squash.img"
  38     /a/exe/web-conf -i -p 8080 - apache2 faiserver <<EOF
  39 <Location />
  40     Deny from all
  41     Allow from $ip
  42 </Location>
  43 EOF
  44 fi
  45
  46 rm -f /srv/tftp/fai/pxelinux.cfg/*
  47 if [[ ! $1 ]]; then
  48     exit 0
  49 fi
  50
  51
  52 # man page doesn't explain this, but this deletes & thus disables
  53 # all chboot systems.
  54 e fai-chboot -Iv $std_arg default # set it to default to get a val out of it next
  55 kernel=$(fai-chboot -L '^default$' | awk '{print $3}')
  56 default_k_args=$(fai-chboot -L '^default$' | \
  57                      sed -r "s/^(\S+\s+){3}(.*)/\2/")
  58 # example of default_k_args
  59 # 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
  60
  61 k_args=()
  62 for arg in $default_k_args; do
  63     case $arg in
  64         # default root arg is /srv/fai/nfsroot
  65         root=*) k_args+=(root=$root_arg) ;;
  66         *) k_args+=($arg) ;;
  67     esac
  68 done
  69 rm -f /srv/tftp/fai/pxelinux.cfg/*
  70 e fai-chboot -k "${k_args[*]}" -v -f verbose,sshd,createvt,reboot $std_arg $kernel "$host"