February 3, 2015

convenient cli tookit using python

python is a incredibly useful language and has a powerful type system which can be pretty convenient. I’ve written python for many years now and when I need a quick tool, most the time I write it in python. These tools have built up over time and i’ve been collecting them organically into a python startup file as a set of libraries and functions. create a file in $HOME/.pythonstartup and cherry pick anything below that you find useful.

January 5, 2015

Google Owned

Ever think about how much information google has collected about you? Apart from services there are additional things going on that you might not be aware of Table of Contents Data Collection Location Services Services Photos Phone Sensors Degoogle Resources Data Collection Data collected is often uploaded to google servers IMEI, hardware serial number, Wifi MAC address AndroidID, Google Ad ID [1] https://www.scss.tcd.ie/Doug.Leith/Android_privacy_report.pdf Location Services In addition to GPS tracking, there is a service that runs on android phones and looks at available wifi networks to determine your location.

November 29, 2014

go powered databases

bolt - https://github.com/boltdb/bolt ledis - http://ledisdb.com/ tiedot - https://github.com/HouzuoGuo/tiedot cockroachdb - https://github.com/cockroachdb/cockroach bolt pure go key-value datastore ledis redis like database written in go attractive to embed redis like features directly into your application which will reduce operational complexity. tiedot JSON document database cockrochdb A Scalable, Geo-Replicated, Transactional Datastore design document https://docs.google.com/document/d/11k2EmhLGSbViBvi6_zFEiKzuXxYF49ZuuDJLe6O8gBU/edit feature summary ACID transactional semantics versioned values primary design goal is consistency and survivability aims to tolerate disk, server, rack and datacenter failures related technologies

September 22, 2014

ban systemd

updates Nov2014 - an exploit in systemd resolver - https://news.ycombinator.com/item?id=8595335 Just another reason to do one thing well and not try to do too much. C’mon systemd, focus. Please help me understand why a init.d replacement needs to provide a resolver. some gems from this thread “I find the design of systemd-resolved to be very strange. It uses dbus to talk to glibc, and it seems to be a new, from-scratch implementation of a DNS resolver.

September 11, 2014

building packages with docker

This is a simple idea I had while waiting for a build to complete. The background Its common to use dpkg-buildpackage inside of a chroot managed by pdebuild. The pdebuild script takes a minimal base image tarball and installs all dependencies in it required to build your package. The build dependencies come from debian/control Build-Depends section. The package being built is a python application using virtualenv. A lot of the packages come from apt however.

September 7, 2014

docker wishlist

things I find that I wish docker supported dockerfile store build context with the image provides ability to change original dockerfile for images you download saves dockerfile and other build artifacts similar in concept to a “source package” support for variables There is very little that the dockerfile actually supports beyond basic static directives. If dockerfile supported templates and variables, we could allow repetitive lines to be reduced to the bare minimum.

September 5, 2014

docker networking performance

While trying to determine the performance overhead of a simple docker container setup, I discovered several issues related to network performance. two issues I have encountered docker-proxy handles local network traffic when using the hosts bridge IP (or localhost) connection tracking overhead of NAT increases memory usage my setup I am using docker containers as an easy way to deploy backends on a host. I wish to use the hosts bridge IP as a backend to route requests from the load balancer.

September 2, 2014