plc.d/network

   1 #!/bin/bash
   2 #
   3 # priority: 100
   4 #
   5 # Manage network related configuration files
   6 #
   7 # Mark Huang <mlhuang@cs.princeton.edu>
   8 # Copyright (C) 2006 The Trustees of Princeton University
   9 #
  10 # $Id$
  11 #
  12
  13 # Source function library and configuration
  14 . /etc/plc.d/functions
  15 . /etc/planetlab/plc_config
  16
  17 # Be verbose
  18 set -x
  19
  20 case "$1" in
  21     start)
  22         MESSAGE=$"Generating network files"
  23         dialog "$MESSAGE"
  24
  25         hfile=$(mktemp)
  26         # Minimal /etc/hosts
  27         (
  28             for server in DB API BOOT WWW ; do
  29                 hostname=PLC_${server}_HOST
  30                 ip=PLC_${server}_IP
  31                 if [ -n "${!ip}" ] ; then
  32                     echo "${!ip}        ${!hostname}"
  33                 else
  34                     ip=$(gethostbyname ${!hostname})
  35                     if [ -n "$ip" ] ; then
  36                         echo "$ip       ${!hostname}"
  37                     fi
  38                 fi
  39             done
  40         ) > $hfile
  41         if [ $PLC_DNS_ENABLED -eq 1 ] ; then
  42             target=/etc/plc_hosts
  43             sort -u $hfile > $target
  44         else
  45             target=/etc/hosts
  46             cat /etc/hosts >> $hfile
  47             echo "#generated by /etc/plc.d/network" >/etc/hosts
  48             echo "127.0.0.1     localhost.localdomain localhost" >>/etc/hosts
  49             sort -u $hfile >> /etc/hosts
  50         fi
  51         chmod +r $target
  52         rm -f $hfile
  53
  54         rfile=$(mktemp)
  55         # Set up nameservers
  56         (
  57             [ -n "$PLC_NET_DNS1" ] && echo "nameserver $PLC_NET_DNS1"
  58             [ -n "$PLC_NET_DNS2" ] && echo "nameserver $PLC_NET_DNS2"
  59         ) > $rfile
  60
  61         if [ $PLC_DNS_ENABLED -eq 1 ] ; then
  62             target=/etc/plc_resolv.conf
  63         else
  64             target=/etc/resolv.conf
  65         fi
  66         cp $rfile $target
  67         chmod +r $target
  68
  69         result "$MESSAGE"
  70         ;;
  71 esac
  72
  73 exit $ERRORS