Starting OVSDB and vSwitchd in OpenvSwitch with Debugging Enabled
Here are some quick notes on how I went about debugging OVSDB (ovsdb-server) and OVS vSwitchd (ovs-vsctl). There are lots of ways to debug OVS these are what I used to get debug logs generated. Those logs are helpful troubleshooting for OVSDB transactions and OpenFlow commands when using the ovs-vctl or OVSDB and OpenFlow APIs. Dont do this unless you …
Docker Command One Liners
I love the code snippets, it’s how I learn any syntax by rolling up the sleeves, hacking and breaking while taking notes along the way. It’s probably not the most efficient but the muscle memory is how I learn. Here is a list of one liners from my notes in no particular order (even though I tried to in a …
Installing Golang IDE Support in Intellij
I have always preferred Intellij Community Edition IDE for Java, Bash, Python, Node and anything else I have needed, including recently C/C++ which is pretty slick. The plus is I can hang on to key-mappings, syntax color and general workflow all in a ubiquitous dev environment. There are some good IDE options for Go and of course support for the …
Golang for Network Ops
I get asked quite often where the traditional network engineer / network ops should start if they want to broaden their horizons with better code hacking skills or they have spent the last 20 years using Perl scripts or more recently Python and need a change. The answer is easy, Golang. At Socketplane, we all ditched the past couple of …
The Network Iceberg
The impact of compute virtualization on the data center network has been profound. There are more virtual ports then physical ports. That simple measurement overshadows any other disruption in networking. We arrived at this transformation as a result of significant adoption of OS virtualization. The next revision of compute virtualization is the application. The last significant bastion of efficiency is to …
Brent’s Technology Bookmarks from June
Lots going on in the past couple of months. While current projects have me pretty busy I wanted to share some good reads and interesting developments in the industry. In no particular order: Thats all for now. Have a great weekend.
Updated DevStack OpenDaylight VM Image for OpenStack IceHouse
Here is an updated Fedora 20 image for building OpenStack Icehouse and OpenDaylight. ODL is now merged into the upcoming OpenStack Icehouse release so now you can install ODL directly from OpenStack trunk. The updated image comes from Kyle Mestery who was primarily responsible for getting the OpenStack/OpenDaylight merge and navigating the process. Thanks also to Andrew Grimberg from the …
Setting Up Overlays on Open vSwitch
Most “SDN” solutions involve overlays or at the least HW overlay gateways/ToR of some type. Some sell overlays terminating in hardware, others sell overlays terminating in the server. The encaps include standards like GRE, VXLAN and soon to be Geneve (Generic Network Virtualization Encapsulation: basically the good parts of the other encaps evolved). While none of these overlay networks should …
