If you work with Data Guard, the lag between the primary and standby database is an informative but difficult metric to measure. I’ve encountered some “solutions” that use the COMPLETION_TIME in (G)V$ARCHIVED_LOG for the standby destination as the time of…

Welcome back to the 2nd part! Last time, we set up the tools that allowed managing the blog as a set of configuration and Markdown-formatted files stored in a source code repository. Now it’s time to deploy the blog on…

I remember when I started blogging in 2008. It was a nice learning experience, and it was rewarding, too – both the challenge of formulating my thoughts clearly and the feedback I received, and still am receiving, on some of…

Continuent Tungsten is one of the few all-in-one solutions for MySQL high availability. In this post I will show you how to automate the upgrade process using Ansible. I will walk you through the individual tasks and, finally, give you…

Google cloud instances run on top of KVM hypervisor. In newer KVM versions, such as the one used in Google Cloud, virtio-scsi is used instead of an older virtio-blk storage backend. The virtio-scsi disk devices looks like: In RHEL6, a module…

Lift and shift migration using tools like Cloudendure is the fastest way to migrate ‘on premises’ systems to Google Cloud. When the migration is complete, the environment can be refactored to use cloud-native capabilities. During application testing after a recent automated…

I’ve been looking into how Vagrant and/or Docker can be used to improve the life of DBAs and maybe others, too. I did this mostly to practice using these tools – especially Docker – that are becoming more and more important…

The 2019 technology forecasts are still a few months away, but some predictions are already a safe bet — especially when it comes to DevOps. New estimates from IDC suggest that the DevOps software market will grow from its 2017…

Today the value of DevOps is well understood, at least by IT professionals. In the IT community, DevOps is almost universally accepted as being superior to traditional software development. By breaking down departmental silos, DevOps unifies development and operations teams…

I’ve been posting quite a bit about Docker as I’ve been working with it a lot as of late. I thought I would share something interesting I discovered a couple weeks ago while working on setting up a Docker container-based…