Latest Posts
BlogPost Series – Creating a Roadmap for vSphere Upgrades:
Phase 6 – Defining the Soll & Roadmap
Intro We covered quite some topics in the previous blogposts. We talked about how important the assessment phase is, which Technical & Common vSphere Challenges you could expect, and what the consequences are of certain choices and methods. We also talked about how you can define the “Ist”, and ...read more →
BlogPost Series – Creating a Roadmap for vSphere Upgrades:
Phase 5.3 – Solving vSphere Compatibility Challenges with VVD
Intro VMware its product portfolio has grown immensely in the last several years. Most VMware products are designed to integrate & enhance each other but also to be compatible with one and another. However, it has become difficult to keep track of which versions of all the products are ...read more →
BlogPost Series – Creating a Roadmap for vSphere Upgrades:
Phase 5.2 – Common vSphere Challenges
Intro Upgrading and maintaining a vSphere environment is a broad topic that also can be difficult. As you probably have noticed already in the blogpost series, there are numerous ways of doing a vSphere upgrade, and each has its own benefits, drawbacks but also consequences. That’s why I’m so ...read more →
Troubleshooting: Cannot Add host “Authenticity of the host’s SSL certificate is not verified”.
Intro One of my customers wanted to change the hostname of the ESXi host. In this case, the ESXi hostname stayed the same, but it needed to become part of a subdomain. Changing an ESXi hostname This can normally be easily done in the following way: Migrate VMs, offline ...read more →
BlogPost Series: LCM of VMware vSphere & HPE Hardware – Final Conclusion (Part 5)
Final Conclusion Like I said in the beginning of the blogpost series, Life Cycle & Patch Management is a difficult topic. Which can become a big headache when there are so many dependencies within the environment, especially if it hasn’t been maintained for a while. The bigger the Jump, ...read more →
BlogPost Series: LCM of VMware vSphere & HPE Hardware – Global LCM Plan & Order of Upgrading (Part 4)
Intro We’ve viewed the different tools that help to manage a HPE stack and if and how we could integrate VUM with this. We also discussed that consistency with virtualization & infrastructure is one of the most important things for having reliable operations, and that you need some sort ...read more →
BlogPost Series: LCM of VMware vSphere & HPE Hardware – Scripts & Reporting Tools (Part 3)
Intro We’ve viewed the different tools that help to manage a HPE stack and if and how we could integrate VUM with this. During the project and our research, we found out that it is really difficult to see if the VIBs that are being deployed, are consistent with ...read more →
BlogPost Series: LCM of VMware vSphere & HPE Hardware – LCM Tools Comparison & Review (Part 2)
Intro Life Cycle & Patch Management, can be achieved with different tools and methods with HPE and VMware. However, the number of available tools that can be used for LCM, can make it quite confusing of how and when these tools should be used. Especially when you install the ...read more →
BlogPost Series: LCM of VMware vSphere & HPE Hardware – Basics (Part 1)
Intro Life Cycle & Patch Management within organizations can be a difficult topic. Mostly because of the broad set of software and hardware that can and should be included in a Life Cycle & Patch Management strategy. Still, due to the constantly changing landscape within the IT, this becomes ...read more →
VUM Error: Host cannot download files from VMware vSphere Update Manager patch store
Setup: vCSA 6.5 with embedded VUM Intro: At one of my customers, I had a weird problem that one of the hosts couldn’t updated through VUM. Time to investigate. Error: “Host cannot download files from VMware vSphere Update Manager patch store. Check the network connectivity and firewall setup, and ...read more →
How to Rollback an ESXi host after an update
Upgrading and updating your ESXi hosts is necessary. Updates contain bug fixes, security updates, new features or improvements, and drivers. With VUM this can be quite easy. However, sometimes you want to rollback after an update. This was the case with one of my customer, who had a few ...read more →
vCenter doesn’t start up – Failed to start File System Check on /dev/dis..
A customer of mine had some problems with a vCenter (vCSA 6.5) that didn’t want to boot up anymore. First thing I checked was if I could log in on the vCenter Appliance Management Interface (VAMI). Unfortunately both the webclient as VAMI was unresponsive. This was also the case ...read more →
