Alauda Cache Service for Redis OSS

Patch Version Upgrade

Redis patch version upgrades provide security fixes and stability improvements. The upgrade process utilizes a rolling update strategy, sequentially restarting pods to maintain service availability throughout the operation. Strategic scheduling of upgrades during maintenance windows is recommended to minimize potential impact on production workloads.

When patch versions become available, we recommend adopting them promptly to ensure your Redis instances benefit from the latest security patches and feature enhancements.

TOC

Configure Upgrade Strategy

You can define how patch upgrades are applied to your Redis instances by configuring the upgrade policy.

Procedure

CLI
Web Console
# Set the upgrade policy for a specific instance
$ kubectl -n <namespace> patch redis <instance-name> --type='json' -p='[{"op":"replace","path":"/spec/upgradeOption/autoUpgrade","value":"<true|false>"}]'

Perform Individual Instance Upgrade

Individual instance upgrades provide granular control over the upgrade process, allowing for targeted validation before deploying changes across your environment.

Prerequisites

  • An available patch version upgrade is indicated by an upgrade icon in the instance list
  • The instance status must be Running before initiating the upgrade

Procedure

CLI
Web Console
# Check for the latest patch version available
$ kubectl get imageversion -l middleware.instance/type=redis,middleware.instance/latest -o jsonpath='{.items[*].spec.crVersion}'

# Check current patch version of a specific instance
$ kubectl -n <namespace> get redis <instance-name> -o jsonpath='{.status.upgradeStatus.crVersion}'

# If the current version is older than the latest version, proceed with the upgrade
$ kubectl -n <namespace> patch redis <instance-name> --type='json' -p='[{"op":"replace","path":"/spec/upgradeOption/crVersion","value": "<new-patch-version>"}]'

Execute Bulk Upgrade Operation

The bulk upgrade feature enables efficient management of upgrades across multiple Redis instances, streamlining the maintenance process for large deployments.

Prerequisites

  • Platform administrator privileges
  • Target instances must be in a Running state.

Procedure

CLI
Web Console
# Check for the latest patch version available
$ kubectl get imageversion -l middleware.instance/type=redis,middleware.instance/latest -o jsonpath='{.items[*].spec.crVersion}'

# Proceed bulk upgrade for multiple instances
$ kubectl -n <namespace> patch redis --all --type='json' -p='[{"op":"replace","path":"/spec/upgradeOption/crVersion","value": "<new-patch-version>"}]'