Valkey - Upgrade Redis to Valkey

Migration process from Redis to Valkey

Request

Updating a Redis PaaS to a Valkey PaaS is the responsibility of cegedim.cloud and can be requested via a ticket submitted from ITCare.

Please specify a time slot when you are available for the operation and whether it should be carried out outside of business hours.

We recommend updating your non-production environments first so that you can estimate the downtime generated by the operation and test your applications on the Valkey PaaS. Please note that in Sentinel topology, the migration process is carried out via a rolling upgrade, meaning that a master node will always be present, minimizing or even eliminating service interruption.

Process

Updating a Redis deployment (single instance or high availability cluster) to a Valkey deployment is a two-step, fully automated process:

• Update the operating system beforehand

  • Several updates depending on the scenario: Debian Redis → Debian Valkey

• Installation and configuration of Valkey

Depending on the source and target versions of Valkey, it may be necessary to first migrate the operating system to a version supported by cegedim.cloud (for more information, see the OS/Valkey support matrix below).

Impacts

The duration of an update varies depending on:

• The topology

  • Standalone topology: Valkey will be installed.

  • Sentinel topology: Valkey and Sentinel will be installed on each node.

• The number of operating system updates required.

Reference times

• Debian operating system update: 10 minutes on average

• Valkey installation and configuration: 5 minutes on average

• Installation, configuration of Sentinel, and replication: variable depending on the volume of data.

OS/Redis/Valkey support matrix

Linux distributions supported by cegedim.cloud depending on the Valkey version:

Version Redis	Version Debian	Version Valkey	Version Debian
6.2.x	10	8.1.x	12
6.2.x	12 (déploiements créés après le 31 mai 2024)
7.2.x	12

The operating system update is only required if PaaS Redis 6.2 was provisioned before May 31, 2024. After this date, PaaS Redis was updated to be deployed on Debian 12.