Month: October 2021

LEARN – Testing multiple non-routable IPs using VMKping

An issue I’ve run into multiple times is duplicate IP addresses on VMKernals. This becomes a bigger issue when the IP address that is taken is from a Filer that also hosts other storage. When you have two devices fighting over traffic like that it can take down the device. To mitigate that issue we’ve

LEARN – Python ESXi Compatibility Checker

UPDATE – Using C:\Windows\py.exe fixed a few issues. I’m not sure if it removes the need for the dependencies.   Find the official VMware Compatibility Guide Here From the Fling Summary “The ESXi Compatibility Checker is a python script that can validate VMware hardware compatibility and upgrade issues of ESXi.” It took me a few

LEARN – Disabling ESXi OpenSLP heap-overflow vulnerability (CVE-2021-21974)

Description – OpenSLP as used in ESXi has a heap-overflow vulnerability. VMware has evaluated the severity of this issue to be in the Important severity range with a maximum CVSSv3 base score of 8.8. Functionality Impacts – With the workaround, CIM clients which uses SLP to find CIM servers over port #427 will not be

LEARN – Join ESXi Hosts to Active Directory for Authentication

The other week I had a request to join all our ESXi hosts to our Active Directory domain so we could authenticate through our users accounts. This allows for better security, tracking of each users activity, as well as giving us the opportunity to create unique and complex root passwords for each hosts.   To

LEARN – How to setup ESXi from scratch

Setting up an ESXi host is easy, free, and gives you the freedom to build multiple servers on one box. ESXi can be installed on a bunch of different hardware but you’ll want to check vmwares compatibility matrix to be certain.   Starting with a server…    

Building a WordPress site with lets-encrypt in docker containers

    This website has been a great way to force my self a bit out of my comfort zone. Building a website with docker and encryption was a new venture for me. I’ve had a basic working knowledge of docker but this building this WordPress site has pushed it a little past basic. Things

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