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42 lines
2.1 KiB
Markdown
42 lines
2.1 KiB
Markdown
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# README
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## Overview
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Milvus 2.2.3 supports rolling update. This script helps you to perform a rolling update with zero downtime.
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> Note:
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> 1. Milvus version must be after 2.2.0.
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> 2. This script only applies to update Milvus installed with Helm and does not apply to Milvus installed with Milvus Operator.
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> 3. This script only supports update operation now.
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> 4. Rolling update is **not supported** in Milvus standalone with **RocksMQ**.
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## Parameters
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| Parameters | Description | Default value | Required |
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| ------------ | ----------------------------------------------------------| -------------------------------- | ----------------------- |
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| `i` | The Milvus instance name. | `None` | True |
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| `n` | The namespace that Milvus is installed in. | `default` | False |
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| `t` | The target Milvus version. | `None` | True |
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| `w` | The new Milvus image tag. | `milvusdb/milvus:v2.2.3` | True |
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| `o` | The operation. | `update` | False |
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## Overview of update procedures
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1. Check all deployments of the Milvus instance. Make sure no deployment is blocked.
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2. Update the deployments one by one. The update order is hard-coded for now.
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3. Specify the namespace, Milvus instance name, target Milvus version, and target image in the script.
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4. Run the script. The following script updates Milvus to 2.2.3.
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```shell
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sh rollingUpdate.sh -n default -i my-release -o update -t 2.2.3 -w 'milvusdb/milvus:v2.2.3'
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```
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> Note
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> 1. This script update the deployment by `kubectl patch` and watch the deployment's status by `kubectl rollout status`.
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> 2. The `target version` is the deployment's label `app.kubernetes.io/version` and is updated by `kubectl patch`.
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