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Add pods disaster tolerance and data regions disaster tolerance test cases #497

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merged 35 commits into from
May 30, 2019

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xiaojingchen
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@xiaojingchen xiaojingchen commented May 16, 2019

What problem does this PR solve?

  • Add test case that checks PD/TIKV/TIDB support disaster tolerance
  • Add test case that checks data regions support disaster tolerance
  • stability test support to test the branch which has not merged to master

What is changed and how it works?

Check List

Tests

  • E2E test [done]
  • Stability test [done]
  • Manual test [done]

Code changes

  • Has Helm charts change
  • Has Go code change (package: tests/)
  • Makefile

Side effects

Related changes
base PR: #475
should be merged after #499

Does this PR introduce a user-facing change?:

None

@weekface weekface added the test/stability stability tests label May 21, 2019
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/run-e2e-test

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/run-e2e-test

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/run-e2e-test

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/run-e2e-test

@xiaojingchen xiaojingchen marked this pull request as ready for review May 23, 2019 08:04
@xiaojingchen xiaojingchen requested review from weekface and aylei May 23, 2019 08:07
@xiaojingchen xiaojingchen assigned cofyc and unassigned cofyc May 23, 2019
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/run-e2e-test

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/run-e2e-test

tests/actions.go Outdated Show resolved Hide resolved
@@ -103,6 +102,46 @@ func main() {
BatchSize: 1,
RawSize: 1,
},
SubValues: `pd:
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For better readability, can we move this string literal to a private const value?

@@ -146,6 +185,46 @@ func main() {
BatchSize: 1,
RawSize: 1,
},
SubValues: `pd:
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So does this

@@ -100,6 +100,46 @@ func main() {
},
Monitor: true,
BlockWriteConfig: conf.BlockWriter,
SubValues: `pd:
affinity:
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I recommend abstract the template and render the namespaces field, maintaining similar yaml literal in 4 places is error-prone

tests/dt.go Outdated
for i, node := range nodes.Items {
index := i % RackNum
node.Labels[RackLabel] = fmt.Sprintf("rack%d", index)
oa.kubeCli.CoreV1().Nodes().Update(&node)
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handle the error

tests/dt.go Outdated
return oa.checkDisasterTolerance(tidbs.Items, nodeMap)
}

func (oa *operatorActions) checkDisasterTolerance(allPods []corev1.Pod, nodeMap map[string]corev1.Node) error {
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revive warns about function/method name only differs in capitalization, I thinks we should avoid this.

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good, got it

tests/dt.go Outdated
}

for rack, pods := range rackPods {
if len(pods) > maxPodsOneRack {
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I think we should also check minimum pods.

Consider 4 pod with 3 rack, max pod is 2, [2, 2, 0] fit the criteria but not the best arrangement to be fault-tolerant. Add the minimum check >=1 will help.

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nice catch! it's a bug

pdClient := http.Client{
Timeout: 10 * time.Second,
}
url := fmt.Sprintf("http://%s-pd.%s:2379/pd/api/v1/regions", cluster.ClusterName, cluster.Namespace)
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Could we add this to PdControlInterface and use oa.pdControl.GetPDClient().GetRegions() instead? Which is better for future maintainability

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Considered, mainly at present only the test code to use this interface, and PD 3.0 and later versions of the interface has changed, so temporary implementation.

return err
}

for _, region := range regions.Regions {
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Could you please add comment for this? I find this is hard to understand at first glance

@aylei
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aylei commented May 23, 2019

/run-e2e-tests

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/run-e2e-test

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/run-e2e-test

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/run-e2e-test

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/run-e2e-test

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/run-e2e-test

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/run-e2e-test

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/run-e2e-test

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/run-e2e-test

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/run-e2e-test

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@weekface @aylei @shuijing198799 @cofyc PTAL

weekface
weekface previously approved these changes May 29, 2019
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LGTM

@@ -42,13 +42,14 @@ spec:
serviceAccount: tidb-operator-e2e
containers:
- name: tidb-operator-e2e
image: 127.0.0.1:5000/pingcap/tidb-operator-e2e:latest
image: hub.pingcap.net/chenxiaojing/tidb-operator-e2e:latest
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image name

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/run-e2e-test

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LGTM

@xiaojingchen xiaojingchen merged commit 83ad7c3 into pingcap:master May 30, 2019
@xiaojingchen xiaojingchen deleted the add-DR-test branch May 30, 2019 03:07
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5 participants