I’ve had a chance to revisit ZFS lately and decided to take some more notes. One highlight of this test is revalidating a quick performance test against ext4. This test is ran on Google Compute Engine n1-highmem-8 (8 vCPU, 52GB…

In the “trivial-errors” category, I imagine one will encounter this error when setting up MongoDB replica sets.

What this means is that the current instance cannot connect to host 1 in my rsconfig for a few possible reasons. A…

So we all know that when troubleshooting MySQL crashes or any other processes in that regard, we simply enable core files to be dumped when the appropriate signal it triggered. To get the best results, we’d set the core file…

Backups is one of the most important part of any MySQL deployment, and nowadays, there’s a number of tools to choose from depending on how your organization implements them. The purpose of this post is to enumerate the main tools…