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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…
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Security concerns regarding OpenSSH mac sha1 in Debian
What is HMAC? HMAC stands for Hash-Based Message Authentication Code. It’s a specific way to use a cryptographic hash function (like SHA-1, SHA-256, etc.) along with a secret key to produce a unique “fingerprint” of some data. This fingerprint allows someone else with the same key to verify that the data hasn’t been tampered with.…
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Signed NVIDIA drivers on Google Cloud Dataproc 2.2
Hello folks, I’ve been working this year on better integrating NVIDIA hardware with the Google Cloud Dataproc product (Hadoop on Google Cloud) running the default cluster node image. We have an open bug[1] in the initialization-actions repo regarding creation failures upon enabling secure boot. This is because with secure boot, kernel driver code has its…
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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…
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Converting a windows install to a libvirt VM
Reduce the size of your c: partition to the smallest it can be and then turn off windows with the understanding that you will never boot this system on the iron ever again. Boot into a netinst installer image (no GUI). hold alt and press left arrow a few times until you get to a…
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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…
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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…
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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…
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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…
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Using SonarQube 5.4, Maven 3.3.9, Jenkins 2.19.1 on systems with both Java 1.7 and 1.8
Hello folks! My team spent hours and hours beating our head against a Sonar deployment problem on Ubuntu Trusty (14.04 LTS). I thought I might share our findings so that you won’t have to! As you probably know, Trusty only makes Java Development Kit 1.7 available on the stock installation. The current stable version of…