mirror of https://github.com/milvus-io/milvus.git
65 lines
1.9 KiB
Markdown
65 lines
1.9 KiB
Markdown
# Chaos Tests
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## Goal
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Chaos tests are designed to check the reliability of Milvus.
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For instance, if one pod is killed:
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- verify that it restarts automatically
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- verify that the related operation fails, while the other operations keep working successfully during the absence of the pod
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- verify that all the operations work successfully after the pod back to running state
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- verify that no data lost
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## Prerequisite
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Chaos tests run in pytest framework, same as e2e tests.
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Please refer to [Run E2E Tests](https://github.com/milvus-io/milvus/blob/master/tests/README.md)
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## Test Scenarios
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### Milvus in cluster mode
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1. root coordinator pod is killed
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2. proxy pod is killed
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3. data coordinator pod is killed
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4. data node pod is killed
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5. index coordinator pod is killed
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6. index node pod is killed
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7. query coordinator pod is killed
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8. query node pod is killed
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9. minio pod is killed
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### Milvus in standalone mode
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1. standalone pod is killed
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2. minio pod is killed
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## How it works
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- Test scenarios are designed by different chaos objects
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- Every chaos object is defined in one yaml file locates in folder <code>chaos_objects</code>
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- Every chaos yaml file specified by <code>ALL_CHAOS_YAMLS</code> in <code>constants.py</code> would be parsed as a parameter and be passed into <code>test_chaos.py</code>
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- All expectations of every scenario are defined in <code>testcases.yaml</code> locates in folder <code>chaos_objects</code>
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- [Chaos Mesh](https://chaos-mesh.org/) is used to inject chaos into Milvus in <code>test_chaos.py</code>
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## Run
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### Manually
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Run a single test scenario manually(take query node pod is killed as instance):
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1. update <code>ALL_CHAOS_YAMLS = 'chaos_querynode*.yaml'</code> in <code>constants.py</code>
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2. run the commands below:
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```bash
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cd /milvus/tests/python_client/chaos
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pytest test_chaos.py --host x.x.x.x -v
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```
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### Nightly
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still in planning
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### Todo
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pod_failure
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container_kill |