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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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State of the racks, 20221231
Hi friends! I haven’t written in a while. I’ve been caught up in work. But between working, I’ve put together some new equipment in a couple of new racks. I bought an audio dampened 15U rack a couple of years ago or so, and into it I’ve placed the RAID array and an HP desktop […]
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Rack coming together
I now have four six-port Qotom systems and one four-port Qotom system in my rack. I have successfully verified that the newest of these is capable of pulling about 745Mbit/s of 1500-byte frames through the switch from six other hosts. I bet it will push data at the same rate. but I can’t get iperf […]
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Recovering videos from DV tapes with Canon ZR80
I am recovering some tapes from back in the day that some of you may enjoy. Here is a log of the process so that maybe you can recover some of your own DV tapes. Seems to work well in modern Debian. To attach to the camcorder, I used a PCI-e card that has an […]
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The woes of 520-byte sectors
A couple years ago, I bought a 12G/s SAS disk to see if I could get it to work with the RAID controller with external SFF-8088 ports which came with the system I got while I was working at The Linux Foundation. I got an enclosure to go with it because I was enthusiastic and […]
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I’m running an ethereum node
cjac@server0:~/Downloads/geth-linux-amd64-1.8.14-316fc7ec$ df -h ~/.ethereum/ Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg00-ethereum 148G 130G 11G 93% /home/cjac/.ethereum this was from before I ran ./geth –syncmode “fast” –cache=1024
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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 […]
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OpenDaylight Symposium 2016
I’ll write this later. Keywords and notes inline Cloud 5G AT&T Ericsson SDN FD.io Cisco Intel Linux Debian Ubuntu Open Source Hydrogen Helium Lithium OSI stack Usability Developers and users working together. Fast Dev/Test cycles Sessions start at 10:30 Message bus Minimal install needs to be smaller Most functionalities must be implemented in modules Upgrade […]