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                 elif running_on_gcp; then
  17                         scriptname="/etc/rc.d/helper/gcp-setup"
  18                 else
  19                         # This system is not running in the cloud
  20                         exit 0
  21                 fi
  22
  23                 # Find the first interface to use
  24                 for i in /sys/class/net/red* /sys/class/net/eth* \
  25                                 /sys/class/net/*; do
  26                         [ -d "${i}" ] || continue
  27                         i=$(basename ${i})
  28
  29                         # Skip loopback
  30                         [ "${i}" = "lo" ] && continue
  31
  32                         # Use whatever we have found
  33                         intf="${i}"
  34                         break
  35                 done
  36
  37                 # Check if we found a network interface
  38                 if [ ! -n "${intf}" ]; then
  39                         echo_failure
  40
  41                         boot_mesg -n "Could not find a network interface" ${FAILURE}
  42                         boot_mesg "" ${NORMAL}
  43                 fi
  44
  45                 # Run a DHCP client and set up the system accordingly
  46                 dhclient -sf "${scriptname}" "${intf}"
  47
  48                 # End DHCP client immediately
  49                 dhclient -sf "${scriptname}" -r "${intf}" &>/dev/null
  50
  51                 # Rename network devices
  52                 udevadm trigger --action="add" --subsystem-match="net"
  53
  54                 exit 0
  55                 ;;
  56
  57         status)
  58                 # Check Amazon
  59                 if running_on_ec2; then
  60                         echo "This system is running on AWS EC2"
  61                         exit 0
  62
  63                 # Check Microsoft
  64                 elif running_on_azure; then
  65                         echo "This system is running on Microsoft Azure"
  66                         exit 0
  67
  68                 # Check Google
  69                 elif running_on_gcp; then
  70                         echo "This system is running on Google Cloud"
  71                         exit 0
  72
  73                 # The rest
  74                 else
  75                         echo "This system is NOT running in the cloud"
  76                         exit 1
  77                 fi
  78                 ;;
  79
  80         *)
  81                 echo "Usage: ${0} {start|status}"
  82                 exit 1
  83                 ;;
  84 esac
  85
  86 # End $rc_base/init.d/cloud-init