Install ESXi (6.7) on a host with a 1-core CPU

Usually installing ESXi (since 5.0) on a host with just one CPU core will simply fail. If you only have a single CPU core then the installation terminates with the following error: CPU_CORES_ERROR: Your machine has [1] cpu core(s) which is less than recommended [2] cpu cores. Since I have a server in my lab with just one core ( why? good question 🙂 ) I needed to get myself a workaround in order to get ESXi installed in my lab environment. (more…)

NSX-v backup retention script

The NSX-v manager is not being backed up via snapshot-based backups. This isn’t officially supported. Therefore a file/configuration based backup method used to backup the configuration of your NSX manager periodically.

Unfortunately, there is no retention setting available in the NSX manager so if you are not careful the backup directory will grow in a rapid fashion and fill up your disk very fast. Via this easy script I’ve written, you can enable backup retention for your NSX-v backup files. (more…)

Replace vRO certificates in a vRA embedded installation

Some time ago I deployed vRealize Automation with vRealize Orchestrator embedded in the appliance in my home lab and I’m not very experienced yet with vRA and vRO. The reason that I deployed it is mainly that I want to get more hands-on experience with vRA and vRO and eventually use the gained knowledge for customers.

vRA was already running for a couple of months, and all the frontend self-signed certificates were already replaced by my Microsoft home lab CA issued certs. When I started using vRO, I noticed that the certificate was not replaced yet and that the appliance was still using the default self-signed one. I started googling how to replace the vRO certificate and found the following official VMware documentation. This article states that you can trust the already installed custom certificates in vRA. I executed every step from the official VMware guideline but was unsuccessful to replace the vRO certificates with the procedure. Fortunately, I was able to replace the certificates with another procedure.  (more…)