I won't forget to double, double, double check a local NTP service ever again. Everyone knows, if something does not work, it's DNS. I agree. But almost as important as the reverse/forward DNS lookup is the correct time given by a local NTP service. I learned it the really hard way and will probably tell… Continue reading Check the time. Like… really! Check it! VMware PSC queries Windows Server NTP Service
Earlier this month I started a Twitter poll and asked the community if anyone would be interested in some kind of community gathering besides the VMUG or any other event. I thought about this because, looking at the western of Germany, there seems to be a huge gap with a lot of potential. There are… Continue reading Havin’ a vBeer? Western Germany Meet-Up
I recently came across an error where I needed to set up a replication between two datacenters using the VMware vSphere Replication appliance. The appliances on both sides were updated to version 188.8.131.522 Build 6128217 and the vCenter Server appliances as well as the ESXi hosts were on the latest build at 6.5. The environment was… Continue reading vSphere Replication fails at validation to DR site
Just a quick reference to bookmark, may someone think it's useful. Spending time to rescan HBA's on all hosts in a cluster is time consuming and not worth the work. It is possible to rescan all HBA's with a simple PowerCLI line: Get-Cluster -Name “Clustername” | Get-VMHost | Get-VMHostStorage -RescanAllHba or if you have more… Continue reading Rescan all Hosts HBA’s | It’s that simple!
First of all, these are all my opinions and thoughts about the journey and preparation towards the VCAP6-DCV Deploy certification. Links provided are already listed on "Unoffical Study Guides" or other blogs, but I will also list them as these were part of my preparation. I was aiming to archive a whole new level of… Continue reading Passed the VCAP6-DCV Deploy exam! My thoughts about the preparation.
I was facing another really annoying issue recently which was quite new for me. While looking for an acceptable solution I came across a website from Lingeshwaran Rangasamy which I do not want to hide as it describes how to fix it in a few steps. Many kudos to @UnixArena. Hope he doesn't mind my… Continue reading [HOW TO] Unknown root / GRUB passwd prior to VMware vCSA upgrade
Another situation I was facing two weeks ago while upgrading two Windows vCenter Server 5.5 including vSphere Replication Appliances to the latest vCenter Server Appliance 6.5U1. As the upgrade process is fairly known by now, I was sure I will need to reset the email@example.com password due the expiration settings. But I also needed to… Continue reading [INFO] Changing the default SSL password during the vCenter Server certification renewal
I was talking to a friend of mine earlier this week about a situation regarding a newly installed VMware vCenter Server Appliance 6.5U1 and was looking for an explanation, which is why this blog post is created. It's just an information about my findings. I was setting up a new vCSA 6.5U1 recently and discovered… Continue reading [INFO] vCSA 6.5U1 timesyncd fallback servers