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                 elif running_on_oci; then
  19                         scriptname="/etc/rc.d/helper/oci-setup"
  20                 else
  21                         # This system is not running in the cloud
  22                         exit 0
  23                 fi
  24
  25                 # Find the first interface to use
  26                 for i in /sys/class/net/red* /sys/class/net/eth* \
  27                                 /sys/class/net/*; do
  28                         [ -d "${i}" ] || continue
  29                         i=$(basename ${i})
  30
  31                         # Skip loopback
  32                         [ "${i}" = "lo" ] && continue
  33
  34                         # Use whatever we have found
  35                         intf="${i}"
  36                         break
  37                 done
  38
  39                 # Check if we found a network interface
  40                 if [ ! -n "${intf}" ]; then
  41                         echo_failure
  42
  43                         boot_mesg -n "Could not find a network interface" ${FAILURE}
  44                         boot_mesg "" ${NORMAL}
  45                 fi
  46
  47                 # Run a DHCP client and set up the system accordingly
  48                 dhclient -sf "${scriptname}" "${intf}"
  49
  50                 # End DHCP client immediately
  51                 dhclient -sf "${scriptname}" -r "${intf}" &>/dev/null
  52
  53                 # Rename network devices
  54                 udevadm trigger --action="add" --subsystem-match="net"
  55
  56                 exit 0
  57                 ;;
  58
  59         status)
  60                 # Check Amazon
  61                 if running_on_ec2; then
  62                         echo "This system is running on AWS EC2"
  63                         exit 0
  64
  65                 # Check Microsoft
  66                 elif running_on_azure; then
  67                         echo "This system is running on Microsoft Azure"
  68                         exit 0
  69
  70                 # Check Google
  71                 elif running_on_gcp; then
  72                         echo "This system is running on Google Cloud"
  73                         exit 0
  74
  75                 # The rest
  76                 else
  77                         echo "This system is NOT running in the cloud"
  78                         exit 1
  79                 fi
  80                 ;;
  81
  82         *)
  83                 echo "Usage: ${0} {start|status}"
  84                 exit 1
  85                 ;;
  86 esac
  87
  88 # End $rc_base/init.d/cloud-init