[fancy_header3 variation=”orange”]Starting OVSDB and vSwitchd in OpenvSwitch with Debugging Enabled [/fancy_header3] 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… Continue reading Starting OVSDB and vSwitchd in OpenvSwitch with Debugging Enabled
Docker Command One Liners
[fancy_header3 variation=”blue”]Docker Command One Liners[/fancy_header3] 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… Continue reading Docker Command One Liners
Installing Golang IDE Support in Intellij
[fancy_header3 textColor=”#25b6eb”] Installing Golang IDE Support in Intellij [/fancy_header3] 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.… Continue reading Installing Golang IDE Support in Intellij
Golang for Network Ops
[fancy_header3 textColor=”#25b6eb”]Golang for Network Ops[/fancy_header3] 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,… Continue reading Golang for Network Ops
The Network Iceberg
[fancy_header3 textColor=”#25b6eb”]The Network Iceberg[/fancy_header3] 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… Continue reading The Network Iceberg
Brent’s Technology Bookmarks from June
[fancy_header3 variation=”orange”]Brent’s Technology Bookmarks from June[/fancy_header3] 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: [fancy_list style=”circle_arrow” variation=”red”] Queueing in the Linux Network Stack – This is a fantastic breakdown of buffer… Continue reading Brent’s Technology Bookmarks from June
Updated DevStack OpenDaylight VM Image for OpenStack IceHouse
[fancy_header3 variation=”orange”]Updated DevStack OpenDaylight VM Image for OpenStack[/fancy_header3] 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… Continue reading Updated DevStack OpenDaylight VM Image for OpenStack IceHouse
Setting Up Overlays on Open vSwitch
[fancy_header3 variation=”orange”] Setting Up Overlays on Open vSwitch [/fancy_header3] 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… Continue reading Setting Up Overlays on Open vSwitch