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View gist:a7da9f326d3e4e94a2a54f030abb8272
- platform: mqtt
state_topic: "sensor/server-room/temperature"
name: "Server room temperature"
unit_of_measurement: "°C"
value_template: "{{ value | round(1) }}"
robinsmidsrod /
Created Nov 20, 2019
How to build iPXE VirtualBox ROM that fits into 56KB
make_vbox() {
pushd "$HOME/src/forked/ipxe/src" >/dev/null &&
make CONFIG=vbox bin/intel--virtio-net--pcnet32.isarom && #EMBED=config/vbox/embedded.ipxe &&
echo "Max size of VirtualBox ROM is 56KB, 57344 bytes" &&
ls -l bin/intel--virtio-net--pcnet32.isarom &&
prefix=$(date +%Y%m%d-%H%M%S) &&
mkdir -p /ipxe/$prefix &&
cp -v bin/intel--virtio-net--pcnet32.isarom /ipxe/$prefix/ &&
echo -e "@echo off\r\nvboxmanage setextradata global VBoxInternal/Devices/pcbios/0/Config/LanBootRom C:\\Programs\\iPXE\\$prefix\\intel--virtio-net--pcnet32.isarom\r\nvboxmanage getextradata global enumerate\r\n" >/ipxe/setvboxrom.bat &&
popd >/dev/null
robinsmidsrod / gist:d2bdb98110e56f1a0f55adcbd593c371
Created Oct 10, 2019
USB-over-IP for sharing webcam over local network
View gist:d2bdb98110e56f1a0f55adcbd593c371
# server - make a device available remotely
apt install linux-tools-common linux-tools-generic hwdata
modprobe usbip-core
modprobe usbip-host
usbipd -D # (runs in background)
usbip list -l
usbip bind -b <busid>
# client - attach to remote device
apt install linux-tools-common linux-tools-generic-hwe-18.04 hwdata
View gist:55963a62214da9a24bc9a646e4fba0a2
src/config/local/efi/console.h:/* Everything but DEBUG and LOG output to EFI console */
src/config/local/efi/console.h:#undef CONSOLE_EFI
src/config/local/efi/console.h://#define CONSOLE_EFI ( CONSOLE_USAGE_ALL & ~CONSOLE_USAGE_DEBUG & ~CONSOLE_USAGE_LOG )
src/config/local/efi/console.h:#define CONSOLE_EFI ( CONSOLE_USAGE_ALL & ~CONSOLE_USAGE_LOG )
src/config/local/efi/console.h:/* Everything but TUI output to syslog console */
src/config/local/efi/console.h:#undef CONSOLE_SYSLOG
src/config/local/efi/console.h:#define CONSOLE_SYSLOG ( CONSOLE_USAGE_ALL & ~CONSOLE_USAGE_TUI )
src/config/local/efi/console.h:#undef LOG_LEVEL
src/config/local/efi/console.h:#define LOG_LEVEL LOG_ALL /* Full syslog logging */
src/config/local/efi/general.h:#undef BANNER_TIMEOUT
robinsmidsrod / ubuntu_1804.ipxe
Last active Oct 5, 2019
iPXE script entries for booting Ubuntu 18.04 in different ways
View ubuntu_1804.ipxe
# boot-url points to an nfs URL
# sanboot-url points to an http URL
# ubuntu-version contains 18.04.3
# ubuntu-release contains bionic
echo Booting Ubuntu from iSCSI for ${initiator-iqn}
set root-path ${base-iscsi}:${hostname}.boot.ubuntu
sanboot ${root-path} || goto failed
goto start
robinsmidsrod / gist:18a559af2680f85a72134a6d3093f62f
Last active Aug 22, 2019
BitDefender Rescue CD iPXE boot script (non-working because missing /bin/mount.nfs in initramfs)
View gist:18a559af2680f85a72134a6d3093f62f
echo Booting BitDefender Rescue ${bitdefender-version} x86 for ${initiator-iqn}
set base-url bitdefender-rescue-${bitdefender-version}/
kernel ${base-url}boot/kernel.i386-pc root=/dev/nfs nfsroot=${nfs-server}:${nfs-root}${base-url} ip=dhcp real_root=/dev/nfs loop=/rescue/livecd.squashfs looptype=squashfs livecd.nfsif=${netX/mac} initrd udev cdroot
initrd ${base-url}boot/initfs.i386-pc
boot || goto failed
goto start
robinsmidsrod / git-branch-sizes
Last active Aug 8, 2019
Output all non-merged refs in a git repo, ordered by number of changed lines in the diff output
View git-branch-sizes
# Output all non-merged refs in a git repo, ordered by number of changed lines in the diff output
git for-each-ref --shell --format="ref=%(refname)" --no-merged | \
while read entry
eval "$entry"
size=$(git diff -U0 "master...$ref" | grep -vP '^(diff|index|@@|\-\-\-|\+\+\+)' | wc -l)
View list_container_by_parent.sql
CREATE FUNCTION public.list_container_by_parent(in_parent_id uuid, in_locale text, in_sort_key text, in_custom_init_key text) RETURNS SETOF public.node
AS $$
-- Returns the child containers of the specified parent container in the
-- sort order specified by the sort key and locale.
-- If sort key is not specified, the sort key of the parent container,
-- or default for parent container type, is used.
-- If custom_init key is specified, containers that have this key set are
-- excluded from output. The value of the custom_init key doesn't matter.
View datatype_or_null.sql
CREATE FUNCTION public.datatype_or_null(data anyelement, datatype text)
RETURNS anyelement
AS $$
RETURN CAST(data AS datatype);
robinsmidsrod / file_listing.txt
Last active Aug 4, 2018
Saltstack formulas for deplying networkboot/dhcpd docker hub image for guest network using VLAN 6
View file_listing.txt
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