I have created several new Virtual Appliances from common Linux flavors and packaged them as OVA for you use and enjoyment:
For years, I have dismissed Virtual Machine Hardware version as unimportant. In fact, in this very blog, I may have advocated for leaving VM Hardware Version set at 8, to maintain full compatibility with both the vSphere C# Client and the vSphere Web Client.
Unfortunately, thanks to Spectre and Meltdown, things have changed. Updating your VM Hardware Version also updates the VM BIOS, and that’s an important part in the remediation of Speculative Execution Vulnerabilities, specifically: CVE-2017-5715 ‘Spectre Variant 2’. Continue reading
Many people are under the incorrect belief that it is hardware-level firmware updates from companies like HPE and Dell that will protect our Virtual Machines from Speculative Execution Vulnerabilities. This is NOT TRUE.
- As far as your VMs are concerned, the VM BIOS and Hypervisor are the hardware!
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 be unfamiliar to many RHEL and Debian users. Continue reading
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. Continue reading
VMware photon OS is described as “yum compatible.” Yum has been the package manager for all Fedora derivative distros like RHEL and CentOS. Photon OS actually uses Tiny DNF (TDNF), which appears to be a fork of the Fedora DNF package management system. Continue reading
When I first started using VMware products, ESX Server ran on Red Hat, Virtual Center (vCenter) ran on Windows, there was no such thing as a “Virtual Appliance,” or at least the term had not yet been coined and Photon OS was a long way in the future! Continue reading
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. Continue reading
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 or how to configure it anywhere! Continue reading
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 default 365 day password expiration. The combination is just long enough for the root password to expire and after about 6 months (depending entirely on the size and activity of the vSphere environment) the /dev/sda3 disk fills! Continue reading