Setting static IP for Photon OS

Photon OS installs by default with DHCP enabled. This is perfect for building and distributing Photon OS OS as a Virtual Appliance, but for most practical applications, you’ll want to set a static IP address. Changing the IP of Photon OS involves a newer, albeit standardized procedure of editing files located in: /etc/systemd/network that will… Continue reading “Setting static IP for Photon OS”

Enabling SSH access for Photon OS

For some users, whether you should or shouldn’t use SSH is a matter for debate. Rather than be hypocritical, I simply acknowledge that most admins will access Linux systems using SSH, and prefer to suggest that using strong passwords or passphrases and secure Management Networks is a more realistic approach to Linux administration.

VCSA 6.5 consoles and connections

Being successful with VMware vSphere is largely about understanding “Who’s on first, What’s on second and Idunno’s on third,” at any given point in time. This is especially true with the VMware vCenter Server Appliance (VCSA), as it presents a several new console choices to the administrator.

VCSA and ESXi password security

I recently went looking for information on password security for the VCSA 6.0 & 6.5 and ESXi 6.0 & 6.5. Most specifically, I was interest in the number of passwords remembered, so I could define that in documentation for a client. Try as I might, I couldn’t find documentation for VCSA number of passwords remembered… Continue reading “VCSA and ESXi password security”

VCSA disks become full over time

I’ve recently spoken with a number of VMware vCenter Server Appliance 6 (VCSA) users that have had issues with the root filesystem of VCSA running out of space. This situation seems to be occurring more often now due to a combination of when the VCSA 6 went mainstream (18 to 24 months ago) and the… Continue reading “VCSA disks become full over time”

OVF and OVA formatted Virtual Appliances

The Open Virtual machine Format (OVF) originally came about in 2007 as the result of a proposal by vendors (VMware, HP, Dell and others) to the Distributed Management Task Force (DTMF), the goal being to create an open standard for interchangeability (portability) of Virtual Machines between hypervisors. VMware was an early and enthusiastic adopter of… Continue reading “OVF and OVA formatted Virtual Appliances”

Changing existing LUNs to Round Robin on ESXi

In the following steps, I am going to show you how to set all of the VMFS Volumes (LUNs) on an ESXi Host to use the PSP known as Round Robin, using only the ESXi Shell and/or SSH. This is clearly the simplest and most direct method of changing the PSP for existing volumes, and… Continue reading “Changing existing LUNs to Round Robin on ESXi”

Upgrading to VCSA 6 fails

I began an upgrade of the VMware vCenter Server Appliance from 5.5 to 6 for a small (in VMware’s own terminology ‘Tiny’) vSphere environment of 3 hosts and about 30 VMs. I certainly didn’t anticipate any trouble beyond the usual hassles associated with upgrading an infrastructure-level service like vCenter. Unfortunately, carefully following VMware documented procedures… Continue reading “Upgrading to VCSA 6 fails”