Severalnines Blog

Safe database change at fleet scale: canaries, maintenance waves, and recovery gates

November 6, 2026 Sebastian Insausti
A PostgreSQL minor update is about as boring as database maintenance gets. You stop the node, install the new binaries, and start it again. On one cluster, with someone watching, it rarely surprises anyone. Now do it on forty clusters at once. One of them pulls packages from a mirror...

Tips for Upgrading Percona XtraDB Cluster to 8.0

October 14, 2020 Krzysztof Ksiazek

How to Perform Rolling Upgrades for MySQL

October 13, 2020 Sebastian Insausti

Tips for Upgrading ClusterControl

October 7, 2020 Agus Syafaat

A Development & Operations Checklist for MongoDB

October 2, 2020 Onyancha Brian Henry