Category: Networking

  • Part 2: Taming the Beast – Deep Dive into the Proxy-Aware GPU Initialization Action

    Part 2: Taming the Beast – Deep Dive into the Proxy-Aware GPU Initialization Action In Part 1 of this series, we laid the network foundation for running secure Dataproc clusters. Now, let’s zoom in on the core component responsible for installing and configuring NVIDIA GPU drivers and the associated ML stack in this restricted environment:…

  • I’m learning about perlguts today.

    ## 0.23 2025-12-20 commit be15aa25dea40aea66a8534143fb81b29d2e6c08 Author: C.J. Collier Date: Sat Dec 20 22:40:44 2025 +0000 Fixes C-level test infrastructure and adds more test cases for upb_to_sv conversions. – **Makefile.PL:** – Allow `extra_src` in `c_test_config.json` to be an array. – Add ASan flags to CCFLAGS and LDDLFLAGS for better debugging. – Corrected echo newlines in `test_c`…

  • Browser Errors vs. Link Lights: Demystifying Network Connectivity with the OSI Model

    Browser Errors vs. Link Lights: Demystifying Network Connectivity with the OSI Model We’ve all been there: you open your web browser, eager to surf the net, only to be greeted by the dreaded “There is no Internet connection” message. It’s frustrating, but understanding how your computer connects to the internet can turn that frustration into…

  • Installing a desktop environment on the HP Omen

    `dmidecode | grep -A8 ‘^System Information’` tells me that the Manufacturer is HP and Product Name is OMEN Transcend Gaming Laptop 14-fb0xxx I’m provisioning a new piece of hardware for my eng consultant and it’s proving more difficult than I expected. I must admit guilt for some of this difficulty. Instead of installing using the…

  • Managing HPE SAS Controllers

    Notes to self. And anyone else who might find them useful. Following are some ssacli commands which I use infrequently enough that they fall out of cache. This may repeat information in other blogs, but since I search my posts first when commands slip my mind, I thought I’d include them here, too. hpacucli is…

  • IPv6 Multicast support on libvirt guests using macvtap

    # # Debian / libvirt # # By default, qemu guests network interfaces are created with the # trustGuestRxFilters attribute set to no. This setting blocks # neighbor solicitation and other ipv6 multicast traffic. To enable # neighbor solicitations, modify your interface definition in your # guest definition XML. # For example if you have…

  • First taste of Debian 12

    As some of you may know, the Debian project released v12, bookworm to stable on the 10th of this month. I haven’t had a reason to try it yet, but I’m downloading it now. My first thought is that it’s much larger than I expected. The normal sized version used to fit on a CD-ROM…

  • Early Access: Inserting JSON data to BigQuery from Spark on Dataproc

    Hello folks! We recently received a case letting us know that Dataproc 2.1.1 was unable to write to a BigQuery table with a column of type JSON. Although the BigQuery connector for Spark has had support for JSON columns since 0.28.0, the Dataproc images on the 2.1 line still cannot create tables with JSON columns…

  • Instructions for installing Proxmox onto the Qotom device

    These instructions are for qotom devices Q515P and Q1075GE. You can order one from Amazon or directly from Cherry Ni <export03@qotom.com>. Instructions are for those coming from Windows. Prerequisites: A USB keyboard and mouse A powered HDMI monitor and an HDMI cable A copy of the Proxmox VE Installer ISO A USB disk from which…

  • IPv6 with CenturyLink Fiber

    In case you want to know how to configure IPv6 using CenturyLink’s 6rd tunneling service. There are four files to update with my script: /etc/radvd.conf.header /etc/default/centurylink-6rd /etc/ppp/ip-up.d/centurylink-6rd /etc/ppp/ip-down.d/centurylink-6rd There are a couple of environment variables in /etc/default/centurylink-6rd that you will want to set. Mine looks like this: LAN_IFACE=”ens18,ens21,ens22″ HEADER_FILE=/etc/radvd.conf.header The script will configure radvd to…