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

   1 #!/bin/bash
   2
   3 x="$(readlink -f "$BASH_SOURCE")"; source "${x%/*}/bash-trace"
   4
   5 fai_action_arg=I
   6 fai_reboot_arg=,reboot
   7 case $1 in
   8     -h|--help)
   9         echo "see help from myfai-chboot"
  10         exit 0
  11         ;;
  12     -S)
  13         fai_action_arg=S
  14         fai_reboot_arg=
  15         shift
  16         ;;
  17 esac
  18
  19 [[ $EUID == 0 ]] || exec sudo "${BASH_SOURCE}" "$@"
  20
  21 e() { echo "$@"; "$@"; }
  22
  23 host=$1
  24
  25 type -t host &>/dev/null || apt-get -y install dnsutils
  26 gateway_if=$(ip route | sed -rn 's/^default via \S+ dev (\S+) .*/\1/p')
  27 if [[ ! $gateway_if ]]; then
  28     echo "$0: failed to find gateway interface"
  29     exit 1
  30 fi
  31 # assuming ipv4, or else we might need to deal with multiple addresses
  32 # in an ipv4 + ipv6 network.
  33 network=$(ip -4 -o a show dev $gateway_if | sed -rn '/scope.*global/s/^(\S+\s+){3}(\S+)\s.*/\2/p')
  34 if [[ ! $network ]]; then
  35     echo "$0: failed to find network"
  36     exit 1
  37 fi
  38 my_ip=${network%/*}
  39 if [[ $host == default ]]; then
  40     ip=$network
  41 else
  42     ip=$(host $host | sed -rn 's/^\S+ has address //p;T;q')/32
  43 fi
  44
  45
  46 # alternate way of getting my ip
  47 #gateway_ip=$(ip route | sed -rn 's/^default via (\S+) .*/\1/p')
  48 #my_ip=$(host faiserver $gateway_ip | sed -rn 's/^\S+ has address //p;T;q')
  49
  50 if modprobe nfsd &>/dev/null; then
  51     std_arg="-u nfs://faiserver/srv/fai/config"
  52     root_arg="$my_ip:/srv/fai/nfsroot"
  53     # fai-setup without -e sets the ip to the local_ip/local_network, eg 192.168.1.3/24
  54     # I restrict it to one ip as simple but imperfect access control.
  55     sed -ri --follow-symlinks '\%^/srv/fai/%d' /etc/exports
  56     cat >>/etc/exports <<EOF
  57 /srv/fai/config $ip(async,ro,no_subtree_check)
  58 /srv/fai/nfsroot $ip(async,ro,no_subtree_check,no_root_squash)
  59 EOF
  60     exportfs -ra
  61 else
  62     std_arg="-u http://faiserver:8080/config.tar.gz"
  63     root_arg="live:http://faiserver:8080/squash.img"
  64     /a/exe/web-conf -i -p 8080 - apache2 faiserver <<EOF
  65 <Location />
  66     Deny from all
  67     Allow from $ip
  68 </Location>
  69 EOF
  70 fi
  71
  72 rm -f /srv/tftp/fai/pxelinux.cfg/*
  73 if [[ ! $1 ]]; then
  74     exit 0
  75 fi
  76
  77
  78 # man page doesn't explain this, but this deletes & thus disables
  79 # all chboot systems.
  80 e fai-chboot -${fai_action_arg}v $std_arg default # set it to default to get a val out of it next
  81 kernel=$(fai-chboot -L '^default$' | awk '{print $3}')
  82 default_k_args=$(fai-chboot -L '^default$' | \
  83                      sed -r "s/^(\S+\s+){3}(.*)/\2/")
  84 # example of default_k_args
  85 # 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
  86
  87 k_args=()
  88 for arg in $default_k_args; do
  89     case $arg in
  90         # default root arg is /srv/fai/nfsroot
  91         root=*) k_args+=(root=$root_arg) ;;
  92         *) k_args+=($arg) ;;
  93     esac
  94 done
  95 rm -f /srv/tftp/fai/pxelinux.cfg/*
  96 e fai-chboot -k "${k_args[*]}" -v -f verbose,sshd,createvt$fai_reboot_arg $std_arg $kernel "$host"