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_exoscale; then
  15                         scriptname="/etc/rc.d/helper/exoscale-setup"
  16                 elif running_on_azure; then
  17                         scriptname="/etc/rc.d/helper/azure-setup"
  18                 elif running_on_gcp; then
  19                         scriptname="/etc/rc.d/helper/gcp-setup"
  20                 elif running_on_oci; then
  21                         scriptname="/etc/rc.d/helper/oci-setup"
  22                 else
  23                         # This system is not running in the cloud
  24                         exit 0
  25                 fi
  26
  27                 # Find the first interface to use
  28                 for i in /sys/class/net/red* /sys/class/net/eth* \
  29                                 /sys/class/net/*; do
  30                         [ -d "${i}" ] || continue
  31                         i=$(basename ${i})
  32
  33                         # Skip loopback
  34                         [ "${i}" = "lo" ] && continue
  35
  36                         # Use whatever we have found
  37                         intf="${i}"
  38                         break
  39                 done
  40
  41                 # Check if we found a network interface
  42                 if [ ! -n "${intf}" ]; then
  43                         echo_failure
  44
  45                         boot_mesg -n "Could not find a network interface" ${FAILURE}
  46                         boot_mesg "" ${NORMAL}
  47                 fi
  48
  49                 # Run a DHCP client and set up the system accordingly
  50                 dhclient -sf "${scriptname}" "${intf}"
  51
  52                 # End DHCP client immediately
  53                 dhclient -sf "${scriptname}" -r "${intf}" &>/dev/null
  54
  55                 # Rename network devices
  56                 udevadm trigger --action="add" --subsystem-match="net"
  57
  58                 exit 0
  59                 ;;
  60
  61         status)
  62                 # Check Amazon
  63                 if running_on_ec2; then
  64                         echo "This system is running on AWS EC2"
  65                         exit 0
  66
  67                 # Check Exoscale
  68                 elif running_on_exoscale; then
  69                         echo "This system is running on Exoscale"
  70                         exit 0
  71
  72                 # Check Microsoft
  73                 elif running_on_azure; then
  74                         echo "This system is running on Microsoft Azure"
  75                         exit 0
  76
  77                 # Check Google
  78                 elif running_on_gcp; then
  79                         echo "This system is running on Google Cloud"
  80                         exit 0
  81
  82                 # The rest
  83                 else
  84                         echo "This system is NOT running in the cloud"
  85                         exit 1
  86                 fi
  87                 ;;
  88
  89         *)
  90                 echo "Usage: ${0} {start|status}"
  91                 exit 1
  92                 ;;
  93 esac
  94
  95 # End $rc_base/init.d/cloud-init