
Author Archives: John W Kerns
Author Archives: John W Kerns
If you have ever used Proxmox, you know it’s a capable and robust open-source hypervisor. When coupled with Ceph, the two can provide a powerful HyperConverged (HCI) platform; rivaling mainstream closed-source solutions like those from Dell, Nutanix, VMWare, etc., and all based on free (paid support available) and open-source software. The distributed nature of HCI […]
The post Proxmox/Ceph – Full Mesh HCI Cluster w/ Dynamic Routing appeared first on Packet Pushers.
POV: You’re a sysadmin who set up a one-off Linux machine for an app you needed, and now it’s out of disk space. You originally spun up a VM, installed a recent Ubuntu OS, and just hit Next, Next, Finish through the guided install. Linux is not your bread-and-butter, you usually deal in Windows, and […]
The post Ubuntu: Extend your default LVM space appeared first on Packet Pushers.
Meraki changed the industry years ago as one of the first platforms to use a cloud portal for all configuration; forgoing the typical local CLI/GUI administration of network appliances. One of the first things a traditional network engineer (like myself) may notice about Meraki equipment is their complete lack of a command-line interface. For the […]
The post Meraki-CLI – Command Line Utility for the Meraki Dashboard appeared first on Packet Pushers.
In this article, I will do a walk-through of a logical network diagram. As I also said in the Physical Diagram article: I prefer to use the term “logical” instead of “L3″ because it is more easily understood by somebody unfamiliar with the OSI model. It also removes the assumption (made by many non-technical people) […]
The post Network Documentation Series: Logical Diagram appeared first on Packet Pushers Podcast and was written by John W Kerns.
Introduction to the Physical Diagram This article is a quick tutorial for creating and maintaining a physical network diagram. I prefer to use the term “physical” instead of “L1″ because it is more easily understood by somebody unfamiliar with the OSI model. It also removes the assumption (made by many non-technical people) that “L1″ and […]
The post Network Documentation Series: Physical Diagram appeared first on Packet Pushers Podcast and was written by John W Kerns.
This post is the first in a series of articles tackling the topic of creating and maintaining proper network documentation. Each article will include a file which can be downloaded and used as a template for creating the document covered. Below you will find a few generic documentation best practices which apply to all documents […]
The post Network Documentation Series: Preamble appeared first on Packet Pushers Podcast and was written by John W Kerns.
I’ve always had a difficult time when attempting to remember how to implement the different types of NAT available on ASA and IOS devices. It doesn’t help that between the two device families, there are three different syntax versions used in the configurations. I created the PDF linked below as a quick reference sheet. It […]
The post Cisco NAT Cheat Sheet appeared first on Packet Pushers Podcast and was written by John W Kerns.