diskimage-builder/elements/ramdisk-base/init.d/20-init-variables
Adam Gandelman 441b30f89f Fallback to a boot_server kernel param if ip= not passed
Depending on bootloader and configuration, ramdisks may receive
a ip= kernel parameter that is used for manual network bring up
in the ramdisk.  This parameter contains the address of the boot
server.  In the absence of ip=, we want the ramdisk to DHCP and
proceed as normal.  However, in this case need to know the address
of the boot server.  This falls back to a 'boot_server' parameter
for this address if it is not provided via kernel cmdline.

Change-Id: Id1ed15ba125d91fa0a13d8e19d1385082ee5d9e9
Closes-bug: #1401289
Related-bug: #1401298
2014-12-10 15:36:15 -08:00

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FIRST_ERR_MSG=
# To identify that the node has booted from virtual media, a kernel
# command-line argument boot_method=vmedia is added in the iso bootloader
# configuration file (like isolinux.cfg for isolinux).
VMEDIA_BOOT_TAG="vmedia"
BOOT_METHOD=$(get_kernel_parameter boot_method)
if [ "$BOOT_METHOD" = "$VMEDIA_BOOT_TAG" ]; then
# If the node booted from virtual media cdrom, the arguments for the
# installation are provided in virtual media floppy. Find out
# the virtual media device, mount it and get the information.
configure_vmedia_dir
fi
readonly _BOOTIF_=$(get_kernel_parameter BOOTIF)
readonly _IP_=$(get_kernel_parameter ip)
readonly BOOT_MAC_ADDRESS=$(echo "$_BOOTIF_" | sed -e "s/-/:/g" | \
sed -e "s/^01://g" | tr 'a-f' 'A-F')
# If bootloader did not pass on network info, we fallback to a kernel
# parameter to locate the address of the boot server.
if [ -n "$_IP_" ]; then
readonly BOOT_SERVER=$(echo "$_IP_" | cut -d':' -f2)
else
readonly BOOT_SERVER=$(get_kernel_parameter boot_server)
fi
# IP address, netmask, gateway can be set a later point of time if
# IP address is assigned by dhcp (for non-pxe boots).
BOOT_IP_ADDRESS=$(echo "$_IP_" | cut -d':' -f1)
BOOT_NETMASK=$(echo "$_IP_" | cut -d':' -f4)
BOOT_GATEWAY=$(echo "$_IP_" | cut -d':' -f3)
readonly DISK=$(get_kernel_parameter disk)
readonly DEPLOYMENT_ID=$(get_kernel_parameter deployment_id)
readonly DEPLOYMENT_KEY=$(get_kernel_parameter deployment_key)
readonly ISCSI_TARGET_IQN=$(get_kernel_parameter iscsi_target_iqn)
TROUBLESHOOT=$(get_kernel_parameter troubleshoot)