Why Automation is Necessary in IT
By automating routine tasks, IT engineers can help businesses compete more effectively.
By automating routine tasks, IT engineers can help businesses compete more effectively.
What about the computer server at Trump Tower?
Several news media outlets have reported that investigators last year were puzzled by data transmissions between a computer server at Trump Tower and a computer server associated with a Russian bank. Although Mr. Trump on Twitter Continue reading
Matthias Luft (a good friend of mine, and a guest speaker in the upcoming Building Next-Generation Data Center course) wrote a great post about the (lack of) security in software development.
The parts I like most (and they apply equally well to networking):
Read more ...This post is part of a series of posts sharing the stories of other users who have decided to migrate to Linux as their primary desktop OS. Each person’s migration (and their accompanying story) is unique; some people have embraced Linux only on their home computer; others are using it at work as well. I believe that sharing this information will help readers who may be considering a migration of their own, and who have questions about whether this is right for them and their particular needs.
For more information about other migrations, see part 1 or part 2 of the series.
This time around we’re sharing the story of Rynardt Spies.
Q: Why did you switch to Linux?
In short, I’ve always been at least a part-time Linux desktop user and a heavy RHEL server user. My main work machine is Windows. However, because of my work with AWS, Docker, etc., I find that being on a Linux machine with all the Linux tools at hand (especially OpenSSL and simple built-in tools like SSH) is invaluable when working in a Linux world. However, I’ve always used Linux Mint, or Ubuntu (basically Debian-derived distributions) for my desktop Continue reading
Org mode is a package for Emacs to “keep notes, maintain todo lists, planning projects and authoring documents”. It can execute embedded snippets of code and capture the output (through Babel). It’s an invaluable tool for documenting your infrastructure and your operations.
Here are three (relatively) short videos exhibiting Org mode use in the context of network operations. In all of them, I am using my own junos-mode which features the following perks:
Since some Junos devices can be quite slow, commits and remote executions are done asynchronously1 with the help of a Python helper.
In the first video, I take some notes about configuring BGP add-path feature (RFC 7911). It demonstrates all the available features of junos-mode.
In the second video, I execute a planned operation to enable this feature in production. The document is a modus operandi and contains the configuration to apply and the commands to check if it works as expected. At the end, the document becomes a detailed report of the operation.
In the third video, a cookbook has been prepared to execute Continue reading
NSX-V 6.3, released last month, introduced many new features. In my last blog post, NSX-V 6.3: Cross-VC NSX Security Enhancements, I discussed several new Cross-VC NSX security features. In this post I’ll discuss another new feature called Controller Disconnected Operation (CDO) mode which provides additional resiliency for the NSX control plane.
The NSX Controllers already offer inherint resiliency for the control plane by design in several ways:
For the reasons mentioned above, it’s a rare event and unlikely that communication would be lost with the entire NSX Controller Cluster. In NSX-V 6.3, this control plane resiliency is enhanced even further via CDO mode.
CDO mode targets specific scenarios where control plane connectivity is lost, for example, a host losing control plane connectivity, losing control plane connectivity to the controller cluster, or NSX controllers are down. CDO mode enhances control plane Continue reading