203 lines
5.4 KiB
Markdown
203 lines
5.4 KiB
Markdown
# Kubernetes测试
|
||
|
||
## 单元测试
|
||
|
||
单元测试仅依赖于源代码，是测试代码逻辑是否符合预期的最简单方法。
|
||
|
||
**运行所有的单元测试**
|
||
|
||
```
|
||
make test
|
||
```
|
||
|
||
**仅测试指定的package**
|
||
|
||
```sh
|
||
# 单个package
|
||
make test WHAT=./pkg/api
|
||
# 多个packages
|
||
make test WHAT=./pkg/{api,kubelet}
|
||
```
|
||
|
||
或者，也可以直接用`go test`
|
||
|
||
```sh
|
||
go test -v k8s.io/kubernetes/pkg/kubelet
|
||
```
|
||
|
||
**仅测试指定package的某个测试case**
|
||
|
||
```
|
||
# Runs TestValidatePod in pkg/api/validation with the verbose flag set
|
||
make test WHAT=./pkg/api/validation KUBE_GOFLAGS="-v" KUBE_TEST_ARGS='-run ^TestValidatePod$'
|
||
|
||
# Runs tests that match the regex ValidatePod|ValidateConfigMap in pkg/api/validation
|
||
make test WHAT=./pkg/api/validation KUBE_GOFLAGS="-v" KUBE_TEST_ARGS="-run ValidatePod\|ValidateConfigMap$"
|
||
```
|
||
|
||
或者直接用`go test`
|
||
|
||
```
|
||
go test -v k8s.io/kubernetes/pkg/api/validation -run ^TestValidatePod$
|
||
```
|
||
|
||
**并行测试**
|
||
|
||
并行测试是root out flakes的一种有效方法：
|
||
|
||
```sh
|
||
# Have 2 workers run all tests 5 times each (10 total iterations).
|
||
make test PARALLEL=2 ITERATION=5
|
||
```
|
||
|
||
**生成测试报告**
|
||
|
||
```
|
||
make test KUBE_COVER=y
|
||
```
|
||
|
||
## Benchmark测试
|
||
|
||
```
|
||
go test ./pkg/apiserver -benchmem -run=XXX -bench=BenchmarkWatch
|
||
```
|
||
|
||
## 集成测试
|
||
|
||
Kubernetes集成测试需要安装etcd（只要安装即可，不需要启动），比如
|
||
|
||
```
|
||
hack/install-etcd.sh # Installs in ./third_party/etcd
|
||
echo export PATH="\$PATH:$(pwd)/third_party/etcd" >> ~/.profile # Add to PATH
|
||
```
|
||
|
||
集成测试会在需要的时候自动启动etcd和kubernetes服务，并运行[test/integration](https://github.com/kubernetes/kubernetes/tree/master/test/integration)里面的测试。
|
||
|
||
**运行所有集成测试**
|
||
|
||
```sh
|
||
make test-integration # Run all integration tests.
|
||
```
|
||
|
||
**指定集成测试用例**
|
||
|
||
```sh
|
||
# Run integration test TestPodUpdateActiveDeadlineSeconds with the verbose flag set.
|
||
make test-integration KUBE_GOFLAGS="-v" KUBE_TEST_ARGS="-run ^TestPodUpdateActiveDeadlineSeconds$"
|
||
```
|
||
|
||
## End to end (e2e)测试
|
||
|
||
End to end (e2e) 测试模拟用户行为操作Kubernetes，用来保证Kubernetes服务或集群的行为完全符合设计预期。
|
||
|
||
在开启e2e测试之前，需要先编译测试文件，并设置KUBERNETES_PROVIDER（默认为gce）：
|
||
|
||
```
|
||
make WHAT='test/e2e/e2e.test'
|
||
make ginkgo
|
||
export KUBERNETES_PROVIDER=local
|
||
```
|
||
|
||
**启动cluster，测试，最后停止cluster**
|
||
|
||
```sh
|
||
# build Kubernetes, up a cluster, run tests, and tear everything down
|
||
go run hack/e2e.go -- -v --build --up --test --down
|
||
```
|
||
|
||
**仅测试指定的用例**
|
||
|
||
```sh
|
||
go run hack/e2e.go -v -test --test_args='--ginkgo.focus=Kubectl\sclient\s\[k8s\.io\]\sKubectl\srolling\-update\sshould\ssupport\srolling\-update\sto\ssame\simage\s\[Conformance\]$'
|
||
```
|
||
|
||
**略过测试用例**
|
||
|
||
```sh
|
||
go run hack/e2e.go -- -v --test --test_args="--ginkgo.skip=Pods.*env
|
||
```
|
||
|
||
**并行测试**
|
||
|
||
```sh
|
||
# Run tests in parallel, skip any that must be run serially
|
||
GINKGO_PARALLEL=y go run hack/e2e.go --v --test --test_args="--ginkgo.skip=\[Serial\]"
|
||
|
||
# Run tests in parallel, skip any that must be run serially and keep the test namespace if test failed
|
||
GINKGO_PARALLEL=y go run hack/e2e.go --v --test --test_args="--ginkgo.skip=\[Serial\] --delete-namespace-on-failure=false"
|
||
```
|
||
|
||
**清理测试**
|
||
|
||
```sh
|
||
go run hack/e2e.go -- -v --down
|
||
```
|
||
|
||
**有用的`-ctl`**
|
||
|
||
```sh
|
||
# -ctl can be used to quickly call kubectl against your e2e cluster. Useful for
|
||
# cleaning up after a failed test or viewing logs. Use -v to avoid suppressing
|
||
# kubectl output.
|
||
go run hack/e2e.go -- -v -ctl='get events'
|
||
go run hack/e2e.go -- -v -ctl='delete pod foobar'
|
||
```
|
||
|
||
## Fedaration e2e测试
|
||
|
||
```sh
|
||
export FEDERATION=true
|
||
export E2E_ZONES="us-central1-a us-central1-b us-central1-f"
|
||
# or export FEDERATION_PUSH_REPO_BASE="quay.io/colin_hom"
|
||
export FEDERATION_PUSH_REPO_BASE="gcr.io/${GCE_PROJECT_NAME}"
|
||
|
||
# build container images
|
||
KUBE_RELEASE_RUN_TESTS=n KUBE_FASTBUILD=true go run hack/e2e.go -- -v -build
|
||
|
||
# push the federation container images
|
||
build/push-federation-images.sh
|
||
|
||
# Deploy federation control plane
|
||
go run hack/e2e.go -- -v --up
|
||
|
||
# Finally, run the tests
|
||
go run hack/e2e.go -- -v --test --test_args="--ginkgo.focus=\[Feature:Federation\]"
|
||
|
||
# Don't forget to teardown everything down
|
||
go run hack/e2e.go -- -v --down
|
||
```
|
||
|
||
可以用`cluster/log-dump.sh <directory>`方便的下载相关日志，帮助排查测试中碰到的问题。
|
||
|
||
## Node e2e测试
|
||
|
||
Node e2e仅测试Kubelet的相关功能，可以在本地或者集群中测试
|
||
|
||
```sh
|
||
export KUBERNETES_PROVIDER=local
|
||
make test-e2e-node FOCUS="InitContainer"
|
||
make test_e2e_node TEST_ARGS="--experimental-cgroups-per-qos=true"
|
||
```
|
||
|
||
## 补充说明
|
||
|
||
借助kubectl的模版可以方便获取想要的数据，比如查询某个container的镜像的方法为
|
||
|
||
```sh
|
||
kubectl get pods nginx-4263166205-ggst4 -o template '--template={{if (exists . "status" "containerStatuses")}}{{range .status.containerStatuses}}{{if eq .name "nginx"}}{{.image}}{{end}}{{end}}{{end}}'
|
||
```
|
||
|
||
## kubernetes测试工具集test-infra
|
||
|
||
[test-infra](https://github.com/kubernetes/test-infra)是由kubernetes官方开源的测试框架，其中包括了Kubernetes测试工具集和测试结果展示。下图展示了test-infra的架构：
|
||
|
||
|
||
|
||
|
||
|
||
该测试框架主要是真多Google公有云做的，支持kubernetes1.6以上版本的测试。详见<https://github.com/kubernetes/test-infra>。
|
||
|
||
## 参考文档
|
||
|
||
* https://github.com/kubernetes/test-infra
|