Improved Powershell script for Let’s Encrypt certificate renewals

In my previous article about Let’s Encrypt certificates Use Let’s Encrypt free certificates in Windows for Veeam Cloud Connect I explained the basics of Let’s Encrypt technology, and how to use its certificates on a Windows machine using ACMEsharp libraries with Powershell. I found out that the previous script had a problem with renewals, so I went on to fix it.

The new dashboard in Ceph Luminous

Dashboards in Ceph have always been a bit of a problem. In the past, I tried first to deploy and run Calamari, but it was a complete failure. I talked about my disgraces in this blog post, and there I also suggested a way better solution: Ceph Dash. But now with the release of Luminous, Ceph is trying again to have its own dashboard. Will it be good this time?

How to migrate Ceph storage volumes from Filestore to Bluestore

In my two previous posts about the new Ceph 12.2 release, named Luminous, I first described the new Bluestore storage technology, and I then upgraded my cluster to the 12.2 release. By default, Ceph can run both OSD using Filestore and Bluestore, so that existing clusters can be safely migrated to Luminous. On the long run, however, users who have previously deployed FileStore are likely to want to transition to BlueStore in order to take advantage of the improved performance and robustness. However, an individual OSD cannot be converted in place. The “conversion” is, in reality, the destruction of a Filestore and the creation of a Bluestore OSD, while the cluster takes care every time of evacuating the old OSD, replicate its content into other OSDs, and then rebalance the content once the new Bluestore is added to the cluster.

Using AWS Simple Email Service (SES) as an SMTP relay for different software solutions

Many software solutions allow for sending reports, warnings, alarms and many other communications via email. This is a great feature to keep track of what’s happening to your installations without having to log into all of them, but having an email server at our disposal these days is not so common anymore. that’s what happened to me last week, and since I was tired to use my personal Gmail account to send myself emails, I decided it was time to find a different solution and to test AWS SES.

Migrate vApps between vCloud Director installations using Veeam

In the last weeks I migrated my personal lab to a new location, with new servers and all. I took the opportunity to rebuild some of the test machines I had in my previous one, but one cumbersome and boring task is always to recreate the virtual machines used to do demos, where different applications are deployed and configured to make the demo more “real”; things like Oracle databases, websites, file servers and so on. As both the platforms at source and destination use VMware vCloud Director, I took this opportunity to learn more about migrating vApps from one vCloud to the other, using Veeam Backup & Replication.

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