README

Overview

Milvus 2.2.3 supports rolling update. This script helps you to perform a rolling update with zero downtime.

Note:

Milvus version must be after 2.2.0.

This script only applies to update Milvus installed with Helm and does not apply to Milvus installed with Milvus Operator.

This script only supports update operation now.

Rolling update is not supported in Milvus standalone with RocksMQ.

Parameters

Parameters	Description	Default value	Required
`i`	The Milvus instance name.	`None`	True
`n`	The namespace that Milvus is installed in.	`default`	False
`t`	The target Milvus version.	`None`	True
`w`	The new Milvus image tag.	`milvusdb/milvus:v2.2.3`	True
`o`	The operation.	`update`	False

Overview of update procedures

Check all deployments of the Milvus instance. Make sure no deployment is blocked.
Update the deployments one by one. The update order is hard-coded for now.
Specify the namespace, Milvus instance name, target Milvus version, and target image in the script.
Run the script. The following script updates Milvus to 2.2.3.

shell

sh rollingUpdate.sh -n default -i my-release -o update -t 2.2.3 -w 'milvusdb/milvus:v2.2.3'

Note

This script update the deployment by kubectl patch and watch the deployment's status by kubectl rollout status.

The target version is the deployment's label app.kubernetes.io/version and is updated by kubectl patch.