src/initscripts/system/cloud-init

   1 #!/bin/sh
   2 ########################################################################
   3 # Begin $rc_base/init.d/cloud-init
   4 ########################################################################
   5
   6 . /etc/sysconfig/rc
   7 . ${rc_functions}
   8
   9 case "${1}" in
  10         start)
  11                 # Check if we are running in the cloud
  12                 if running_on_ec2; then
  13                         scriptname="/etc/rc.d/helper/aws-setup"
  14                 elif running_on_azure; then
  15                         scriptname="/etc/rc.d/helper/azure-setup"
  16                 else
  17                         # This system is not running in the cloud
  18                         exit 0
  19                 fi
  20
  21                 # Find the first interface to use
  22                 for i in /sys/class/net/red* /sys/class/net/eth* \
  23                                 /sys/class/net/*; do
  24                         [ -d "${i}" ] || continue
  25                         i=$(basename ${i})
  26
  27                         # Skip loopback
  28                         [ "${i}" = "lo" ] && continue
  29
  30                         # Use whatever we have found
  31                         intf="${i}"
  32                         break
  33                 done
  34
  35                 # Check if we found a network interface
  36                 if [ ! -n "${intf}" ]; then
  37                         echo_failure
  38
  39                         boot_mesg -n "Could not find a network interface" ${FAILURE}
  40                         boot_mesg "" ${NORMAL}
  41                 fi
  42
  43                 # Run a DHCP client and set up the system accordingly
  44                 dhclient -sf "${scriptname}" "${intf}"
  45
  46                 # End DHCP client immediately
  47                 dhclient -sf "${scriptname}" -r "${intf}" &>/dev/null
  48
  49                 # Rename network devices
  50                 udevadm trigger --action="add" --subsystem-match="net"
  51
  52                 exit 0
  53                 ;;
  54
  55         status)
  56                 # Check Amazon
  57                 if running_on_ec2; then
  58                         echo "This system is running on AWS EC2"
  59                         exit 0
  60
  61                 # Check Microsoft
  62                 elif running_on_azure; then
  63                         echo "This system is running on Microsoft Azure"
  64                         exit 0
  65
  66                 # The rest
  67                 else
  68                         echo "This system is NOT running in the cloud"
  69                         exit 1
  70                 fi
  71                 ;;
  72
  73         *)
  74                 echo "Usage: ${0} {start|status}"
  75                 exit 1
  76                 ;;
  77 esac
  78
  79 # End $rc_base/init.d/cloud-init