#!ipxe # I've assume IPv4 for this script, so if we need IPv6, it may need # modifications. # Require only verified images to boot imgtrust --permanent # For the "focal" part of the URL string, in case that changes in the future. set ubuntu-variant focal goto get_arch ################# ### This section is at the top, so it's easier to modify. :static_ip_boot_setup # Open all network interface devices, so we aren't restricted to just the first ifopen sleep 1 # Currently we just configure IP info by MAC address. So we iterate over # MAC addresses and set the variables. To ensure we use the desired # device, we iterate over all devices and simply find matches by # MAC address. set idx:int32 0 set successful f :loop isset ${net${idx}/mac} || goto loop_done ######################## SET STATIC IP INFO HERE ############################# # Just copy/paste an entire line to add more iseq ${net${idx}/mac:string} "00:01:02:A0:B1:C1" && set ip-dev-name eth0 && set ip-addr "192.168.1.5" && set ip-gateway "192.168.1.1" && set ip-netmask "255.255.255.0" && set ip-dns "1.1.1.1" && set successful t && goto loop_done || iseq ${net${idx}/mac:string} "03:04:05:D4:E5:F6" && set ip-dev-name eth0 && set ip-addr "192.168.99.2" && set ip-gateway "192.168.99.1" && set ip-netmask "255.255.255.0" && set ip-dns "1.1.1.1" && set successful t && goto loop_done || # node1.bitmessage.at iseq ${net${idx}/mac:string} "40:A8:F0:31:CC:58" && set ip-dev-name eth0 && set ip-addr "93.189.28.82" && set ip-gateway "93.189.28.81" && set ip-netmask "255.255.255.240" && set ip-dns "1.1.1.1" && set successful t && goto loop_done || iseq ${net${idx}/mac:string} "40:A8:F0:31:CC:59" && set ip-dev-name eth0 && set ip-addr "93.189.28.82" && set ip-gateway "93.189.28.81" && set ip-netmask "255.255.255.240" && set ip-dns "1.1.1.1" && set successful t && goto loop_done || ############################################################################## inc idx && goto loop :loop_done # If we have not successfully found a MAC match, then we error, because we # also failed DHCP. So there's nothing we can do but fail. iseq successful f && goto error_handler # If on the other hand we're successful, then we construct the kernel ip= line set ip-info ${ip-addr}::${ip-gateway}:${ip-netmask}::${ip-dev-name}:off:${ip-dns} # And setup IPXE networking. # First, set device info set net${idx}/ip ${ip-addr} set net${idx}/gateway ${ip-gateway} set net${idx}/netmask ${ip-netmask} set net${idx}/dns ${ip-dns} # Now we close all net devices and enable only the one we need. # Sleep a little between, so we don't error by continuing too fast before the # device is actually ready sleep 1 ifclose sleep 1 ifopen net${idx} sleep 1 # Set settings again in case the ifdown/ifup cleared them set net${idx}/ip ${ip-addr} set net${idx}/gateway ${ip-gateway} set net${idx}/netmask ${ip-netmask} set net${idx}/dns ${ip-dns} sleep 1 # Now we have the ip= line and the IPXE network configured, so we can # download and boot. goto boot_all ### ################# # In case we want to... log?? Or do something else. :error_handler echo "###########################################################" echo "An unspecified error has occurred." echo "The system will sleep for two minutes and then reboot." echo "###########################################################" sleep 60 sleep 60 reboot # Should not occur, but just in case... sleep 5 exit # Get relevant CPU arch. :get_arch iseq ${buildarch} arm32 && goto start_arm32 || iseq ${buildarch} arm64 && goto start_arm64 || iseq ${buildarch} i386 && goto start_i386 || iseq ${buildarch} x86_64 && goto start_amd64 || goto error_handler # Builds may be done on 32-bit, but machines will always be 64-bit. # Keep this section just in case we want to use 32-bit machines in the future. :start_arm32 goto start_arm64 :start_i386 goto start_amd64 # Set arch info and determine if we can use DHCP for network. # Then either boot or goto static IP setup. :start_arm64 set arch-info arm64 dhcp || goto static_ip_boot_arm64 sleep 1 set ip-info dhcp goto boot_all :start_amd64 set arch-info amd64 dhcp || goto static_ip_boot_amd64 sleep 1 set ip-info dhcp goto boot_all # This process should be the same for arm and x86, but I'll leave this section # intact in case it turns out it's not the same :static_ip_boot_arm64 goto static_ip_boot_setup :static_ip_boot_amd64 goto static_ip_boot_setup :boot_all # We use HTTP because IPXE's HTTPS implementation is lacking. So we delegate # integrity and validation to imgverify. # Naming the squashfs download "/squashfs" is required, otherwise the boot # kernel fails to load it in the "root=" part of the kernel cmdline. # However, note that imgverify will fail if you refer to it as "/squashfs" # instead of "squashfs". imgfetch http://images.sysdeploy.org/${ubuntu-variant}/${arch-info}/squashfs /squashfs || goto error_handler imgverify --signer images.sysdeploy.org squashfs http://images.sysdeploy.org/${ubuntu-variant}/${arch-info}/squashfs.sig || goto error_handler # "--signer" validates against the subject common name field of the signing # certificate. That signing cert must have both the digital signature key # usage set and the code-signing key usage extension set. # By default, IPXE trusts the default Mozilla global root CA list, so # make sure you pick a common name with a FQDN you control, even if you're # using a custom CA that you import during build. initrd http://images.sysdeploy.org/${ubuntu-variant}/${arch-info}/boot-initrd || goto error_handler imgverify --signer images.sysdeploy.org boot-initrd http://images.sysdeploy.org/${ubuntu-variant}/${arch-info}/boot-initrd.sig || goto error_handler kernel http://images.sysdeploy.org/${ubuntu-variant}/${arch-info}/boot-kernel || goto error_handler imgverify --signer images.sysdeploy.org boot-kernel http://images.sysdeploy.org/${ubuntu-variant}/${arch-info}/boot-kernel.sig || goto error_handler # Get accurate time so we can set the clock in kernel boot cmdline ntp pool.ntp.org || goto error_handler boot boot-kernel initrd=boot-initrd rootfstype=squashfs root=/squashfs ip=${ip-info} overlayroot=tmpfs:recurse=0 systemd.clock-usec=${unixtime:int32}000000 ds=nocloud-net;s=https://cloud-init.sysdeploy.org/ || goto error_handler # unixtime variable must be used with int32, because that's the only way it # will display as decimal digits. unit32 and string both display as hex. # Therefore this will stop working in 2038.