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Jarek Hartman

Jarek Hartman

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Jarek Hartman

TrainerRoad workouts in your Garmin Watch

Jarek 2023-01-112023-01-11 Gadgets & hobbies No Comments

Background

This small ConnectIQ Widget for Garmin Smart Watches allows you to check your TrainerRoad workout.

Navigation

After installation should be visible in your Widgets carousel. Single tap to enable an option to swipe up or down for next/previous day. …

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Convert Diameter msg hex string to Wireshark pcap

Jarek 2022-12-062022-12-06 Telco and IT No Comments

A “raw” hex string can be converted into Wireshark pcap:

query="<hex string here>"

export FILE="$HOME/Downloads/capture"

echo -n "${query}" > "${FILE}.bin.txt"

xxd -r -p "${FILE}.bin.txt" | od -Ax -tx1 > "${FILE}.hex.txt"

/Users/jhartman/Tools/Utilities/Wireshark.app/Contents/MacOS/text2pcap -o none -E wireshark-upper-pdu -P diameter -F pcap "${FILE}.hex.txt" 
…
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Live Wireshark diameter capturing from K8s container (in Google Kubernetes Engine)

Jarek 2022-04-252022-04-25 Telco and IT No Comments

Handy command to remotely capture tcpdump from a K8s container located in Google Kubernetes Engine and then display it (live!) in Wireshark running on your PC:

% gcloud beta compute ssh jumphost --quiet --command='kubectl exec tra-rt-ag1-0 --namespace=app-ns -- sudo /usr/sbin/tcpdump 
…
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How to fix Permission “artifactregistry.repositories.downloadArtifacts” denied on resource on Ubuntu when pulling from Google Artifact repository

Jarek 2022-03-232022-04-25 Telco and IT 4 Comments

Easiest way to install Docker in Ubuntu is to use snap. But then when you try to pull/push any images from Google Cloud Platform (GCP) recommended way of authorisation does not work:

jhartman@docker-mtx:~$ gcloud config configurations list
NAME               IS_ACTIVE  ACCOUNT                                    
…
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Proxmox 7 can’t boot to UEFI (Home Assistant and other UEFI images)

Jarek 2021-11-082022-12-25 Gadgets & hobbies 15 Comments

Found this at opportunity of installing Home Assistant – from HA OS qemu2 image – boot process just stops into UEFI Shell prompt:

BLK0: Alias (s): PciRoot (0x0) /Pci (0x1E,0x0) /Pci (0x1,0x0)/Pci (0x5,0x0) /Scsi (0x0,0x0) BLK2: Alias (s): PciRoot (Ox0) /Pci (0x1E,0x0) /Pci (0x1,0x0) /Pci (0x5,0x0) /Scsi (0x0,0x0) /HD ( 2,GPT,26700FC6-BOBC-4CCF-9837-EA1A4CBA3E65,0x10800,0xC000) BLK3: Alias (s): PciRoot (0x0) /Pci (Ox1E,0x0) /Pci (0x1.0x0) /Pci (0x5,0x0) /Scsi (0x0, 0x0) / HD ( 3,GPT,8D3D53E3-6D49-4C38-8349-AFF6859E82FD,0x1C800,0x80000) BLK4: Alias(s): PciRoot (0x0) /Pci (Ox1E,0x0) /Pci (0x1,0x0)/Pci (0x5,0x0) /Scsi (Ox0,0x0) / HD ( 4, GPT,FCO2A4F0-5350-406F-93A2-56CBED636B5F,0x9C800,0xC000) BLK5: Alias (s): PciRoot (0x0) /Pci (0x1E.0x0) /Pci (0x1,0x0) /Pci (0x5,0x0) /Scsi (0x0,0x0) /HD ( 5,GPT,A3EC664E-32CE-4665-95EA-PAE90CE9AA20,0xA8800,0x80000) BLK6: Alias (s): PciRoot (0x0) /Pci (Ox1E,0x0) /Pci (0x1,0x0) /Pci (0x5,0x0) /Scsi (0x0,0x0) /HD ( 6,GPT,33236519-7F32-4DFF-8002-3390B62C309D,0x128800,0x4000) BLK7: Alias (s): PciRoot (Ox0) /Pci (Ox1E,0x0) /Pci (0x1.0x0)/Pci (0x5,0x0) /Scsi (0x0,0x0) / HD ( 7.GPT,F1326040-5236-40EB-B683-AAA100A9AFCF,0x12C800,0x30000) BLK8: Alias(s): PciRoot (0x0) /Pci (0x1E.0x0) /Pci (0x1,0x0) /Pci (0x5,0x0) /Scsi (0x0 ,0x0) /HD ( 8 ,GPT•A52A4597-FA3A-4851-AEFD-2FBE9F849079,0x15C800,0x200000) Press ESC in 1 seconds to skip startup.nsh or any other key to continue. Shell>

BLK0: Alias (s):
PciRoot (0x0) /Pci (0x1E,0x0) /Pci (0x1,0x0)/Pci (0x5,0x0) /Scsi (0x0,0x0)
BLK2: Alias (s):
PciRoot (Ox0)
…
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