My hard drives were spinning at 7600 RPM 24/7…Arrgg! Why do I want power control over my spinning rust…spin down to save noise and heat = save energy For my home lab I buy enterprise HDD’s from ebay et al at amazing price points per Gb. Very few have issues but all need some amount… Continue reading SAS disk power mode control
Always use the graceful method unless absolutely necessary. i.e don’t just yank the power cord out. Graceful method with physical access to device with no console: Press and immediately release the Power button. The device begins gracefully shutting down the operating system and then powers itself off Graceful method while logged in via terminal or… Continue reading Powering On/Off Juniper SRX320
Continuing on from Storage Clustering….a living research project TL;DR: Saved US$16000, smoking network I’m redoing my home and lab network with the goal of achieving the ability of faster then 10Gb/s connections to and between the storage cluster and computational node cluster. I was put off by the cost of going 10Gbe (ethernet). What I… Continue reading eBay Score of the Century
dd has being my go to tool for everything-imges-and-iso, especially ever since the usb stick became ubiquitous and norm for installing new a OS. For the past month I’ve been trying out a new way/tool on both linux and MacOS called etcher. It’s light weight and easy to use. Have a look on github https://github.com/resin-io/etcher… Continue reading Etcher does away with dd*
Synopsis: NetworkManager bad. Systemd good. Netplan a curve ball. Make a yaml. I just completed a fresh (minimal) install of Ubuntu 18.04 Desktop. I used the new LTS release as an excuse to redo my workstation to simplify and unify since my use case flipped from more KVM virtual machines to more LXD containers. In… Continue reading Netplan bridging under Ubuntu 18.04
Continuing on with my theme of compiling and patching linux kernels a la: Kernel patch and compile the Fedora way A more elegant: Quick and dirty kernel patch and build Here is how I patch and compile new kernels for Ubuntu/Debian distributions. More specifically, create .deb files to be used by the Advanced Packaging Tool… Continue reading Kernel patch and compile the Debian/Ubuntu way
Ok, I’ll keep this short, sweet and generic. I’ll endeaver to put up a instructions for creating custom kernel packages in .dep and rpm (done and see here “Kernel patch and compile the Fedora way“) format if I find the need to create them. As we have seen, the original/traditional/generic way to install new kernels… Continue reading A more elegant: Quick and dirty kernel patch and build
