Use deterministic shortname for stress test BaseName (Azure#3746)

* Use deterministic shortname for stress BaseName

* Add network stress example with scenarios and basename targeting

* Update stress addons to 0.1.20 with BaseName fix

* Update stress examples to addons version 0.1.20

tools/stress-cluster/chaos/examples/network-stress-example/Chart.lock

@@ -1,6 +1,6 @@
 dependencies:
 - name: stress-test-addons
   repository: https://stresstestcharts.blob.core.windows.net/helm/
-  version: 0.1.19
-digest: sha256:617c5c463a27a54f01743c718921a2f668d11b7769958ff9d418627256dec3fa
-generated: "2022-06-30T15:10:48.0418404-04:00"
+  version: 0.1.20
+digest: sha256:174a2f4b768cb47718d4b3d5a506330aa781abb31803fbeaeba3b7eef87a9f38
+generated: "2022-07-25T18:54:24.3081785-04:00"

tools/stress-cluster/chaos/examples/network-stress-example/Chart.yaml

@@ -10,5 +10,5 @@ annotations:
 
 dependencies:
 - name: stress-test-addons
-  version: 0.1.19
+  version: 0.1.20
   repository: "@stress-test-charts"

tools/stress-cluster/chaos/examples/network-stress-scenarios-example/Chart.yaml

@@ -0,0 +1,14 @@
+apiVersion: v2
+name: network-scenario-example
+description: An example stress test chart with network chaos
+version: 0.1.1
+appVersion: v0.1
+annotations:
+  stressTest: 'true'  # enable auto-discovery of this test via `find-all-stress-packages.ps1`
+  example: 'true'  # enable auto-discovery filtering `find-all-stress-packages.ps1 -filters @{example='true'}`
+  namespace: 'examples'
+
+dependencies:
+- name: stress-test-addons
+  version: 0.1.20
+  repository: "@stress-test-charts"

tools/stress-cluster/chaos/examples/network-stress-scenarios-example/Dockerfile

@@ -0,0 +1,7 @@
+FROM mcr.microsoft.com/cbl-mariner/base/core:1.0
+# Included packages: https://github.com/microsoft/CBL-Mariner/blob/1.0/SPECS/core-packages/core-packages.spec
+
+ADD ./poll.sh /poll.sh
+RUN chmod +x /poll.sh
+
+CMD bash /poll.sh

tools/stress-cluster/chaos/examples/network-stress-scenarios-example/poll.sh

@@ -0,0 +1,16 @@
+set -x
+
+if test -f "$ENV_FILE"; then
+    echo "env file located at $ENV_FILE:"
+    ls -al $ENV_FILE
+else
+    echo "ENV FILE NOT FOUND"
+fi
+
+while true;
+    # Azure AKS default outbound rules do not allow ICMP,
+    # so use wget in place of ping for deployment simplicity
+    echo "SCENARIO_NAME: $SCENARIO_NAME"
+    do wget -T1 -t1 --spider http://$SCENARIO_NAME.bing.com
+    sleep 5
+done

tools/stress-cluster/chaos/examples/network-stress-scenarios-example/templates/network_loss.yaml

@@ -0,0 +1,22 @@
+{{- include "stress-test-addons.chaos-wrapper.tpl" (list . "stress.network-chaos") -}}
+{{- define "stress.network-chaos" -}}
+apiVersion: chaos-mesh.org/v1alpha1
+kind: NetworkChaos
+
+spec:
+  action: loss
+  direction: to
+  externalTargets:
+    - {{ .Stress.Scenario }}.bing.com
+  mode: one
+  selector:
+    labelSelectors:
+      # .Stress.BaseName is a unique id that can be used for azure resource naming and correlation
+      testInstance: {{ .Stress.BaseName }}
+      chaos: "true"
+    namespaces:
+      - {{ .Release.Namespace }}
+  loss:
+    loss: "100"
+    correlation: "100"
+{{- end -}}

tools/stress-cluster/chaos/examples/network-stress-scenarios-example/templates/testjob.yaml

@@ -0,0 +1,18 @@
+{{- include "stress-test-addons.env-job-template.from-pod" (list . "stress.network-example") -}}
+{{- define "stress.network-example" -}}
+metadata:
+  labels:
+    # .Stress.BaseName is a unique id that can be used for azure resource naming and correlation
+    testInstance: {{ .Stress.BaseName }}
+    testName: packet-loss
+    chaos: "true"
+spec:
+  nodeSelector:
+    sku: 'default'
+  containers:
+    - name: network-example
+      command: ["bash", "poll.sh"]
+      imagePullPolicy: Always
+      image: {{ .Values.image }}
+      {{- include "stress-test-addons.container-env" . | nindent 6 }}
+{{- end -}}

tools/stress-cluster/chaos/examples/network-stress-scenarios-example/values.yaml

@@ -0,0 +1,4 @@
+scenarios:
+  - maps
+  - images
+  - videos

tools/stress-cluster/chaos/examples/stress-debug-share-example/Chart.lock

@@ -1,6 +1,6 @@
 dependencies:
 - name: stress-test-addons
   repository: https://stresstestcharts.blob.core.windows.net/helm/
-  version: 0.1.19
-digest: sha256:617c5c463a27a54f01743c718921a2f668d11b7769958ff9d418627256dec3fa
-generated: "2022-06-30T15:10:41.0984217-04:00"
+  version: 0.1.20
+digest: sha256:174a2f4b768cb47718d4b3d5a506330aa781abb31803fbeaeba3b7eef87a9f38
+generated: "2022-07-25T18:54:17.4896935-04:00"

tools/stress-cluster/chaos/examples/stress-debug-share-example/Chart.yaml

@@ -10,5 +10,5 @@ annotations:
 
 dependencies:
 - name: stress-test-addons
-  version: 0.1.19
+  version: 0.1.20
   repository: "@stress-test-charts"

tools/stress-cluster/chaos/examples/stress-deployment-example/Chart.lock

@@ -1,6 +1,6 @@
 dependencies:
 - name: stress-test-addons
   repository: https://stresstestcharts.blob.core.windows.net/helm/
-  version: 0.1.19
-digest: sha256:617c5c463a27a54f01743c718921a2f668d11b7769958ff9d418627256dec3fa
-generated: "2022-06-30T15:10:30.8276449-04:00"
+  version: 0.1.20
+digest: sha256:174a2f4b768cb47718d4b3d5a506330aa781abb31803fbeaeba3b7eef87a9f38
+generated: "2022-07-25T18:53:54.6113438-04:00"

tools/stress-cluster/chaos/examples/stress-deployment-example/Chart.yaml

@@ -10,5 +10,5 @@ annotations:
 
 dependencies:
 - name: stress-test-addons
-  version: 0.1.19
+  version: 0.1.20
   repository: "@stress-test-charts"

tools/stress-cluster/cluster/kubernetes/stress-test-addons/CHANGELOG.md

@@ -1,5 +1,17 @@
 # Release History
 
+## 0.1.20 (2022-07-25)
+
+### Features Added
+
+### Breaking Changes
+
+### Bugs Fixed
+
+Fixed a bug introduced in 0.1.18 with `{{ .Stress.BaseName }}` not being deterministic. This meant that chaos policies using `{{ .Stress.BaseName }}` to block DNS entries did not use the same string value as the test template resources. The new BaseName is generated via a sha1 hash of the resource group name (which includes the scenario name, release name and release revision), truncated to length 5, and prefixed with a `s` character for maximum azure resource naming compatibility.
+
+### Other Changes
+
 ## 0.1.19 (2022-06-30)
 
 ### Features Added

tools/stress-cluster/cluster/kubernetes/stress-test-addons/Chart.yaml

@@ -2,5 +2,5 @@ apiVersion: v2
 name: stress-test-addons
 description: Baseline resources and templates for stress testing clusters
 
-version: 0.1.19
+version: 0.1.20
 appVersion: v0.1

tools/stress-cluster/cluster/kubernetes/stress-test-addons/index.yaml

@@ -1,6 +1,15 @@
 apiVersion: v1
 entries:
   stress-test-addons:
+  - apiVersion: v2
+    appVersion: v0.1
+    created: "2022-07-25T18:49:51.1630068-04:00"
+    description: Baseline resources and templates for stress testing clusters
+    digest: a9f896b09084c2ce2f2b361cf944c5b13473ea2f343e395482fdf4ff0c53f0f7
+    name: stress-test-addons
+    urls:
+    - https://stresstestcharts.blob.core.windows.net/helm/stress-test-addons-0.1.20.tgz
+    version: 0.1.20
   - apiVersion: v2
     appVersion: v0.1
     created: "2022-06-30T15:09:19.3110544-04:00"
@@ -145,4 +154,4 @@ entries:
     urls:
     - https://stresstestcharts.blob.core.windows.net/helm/stress-test-addons-0.1.2.tgz
     version: 0.1.2
-generated: "2022-06-30T15:09:19.3033354-04:00"
+generated: "2022-07-25T18:49:51.1548109-04:00"

tools/stress-cluster/cluster/kubernetes/stress-test-addons/templates/_container_env.tpl

@@ -14,6 +14,8 @@ env:
     value: /mnt/share/$(POD_NAMESPACE)/$(POD_NAME)/
   - name: DEBUG_SHARE_ROOT
     value: /mnt/share/
+  - name: SCENARIO_NAME
+    value: {{ .Stress.Scenario }}
 volumeMounts:
   - name: test-env-{{ lower .Stress.Scenario }}-{{ .Release.Name }}-{{ .Release.Revision }}
     mountPath: /mnt/outputs

tools/stress-cluster/cluster/kubernetes/stress-test-addons/templates/_util.tpl

@@ -36,8 +36,8 @@ See https://github.com/Masterminds/sprig/tree/master/docs for template function
 {{- $_global := index . 0 -}}
 {{- $_scenario := index . 1 -}}
 {{- $resourceGroupName := lower (print $_global.Release.Namespace "-" $_scenario "-" $_global.Release.Name "-" $_global.Release.Revision) -}}
-{{- /* Use lowercase alpha characters for maximum azure resource naming compatibility */ -}}
-{{- $uniqueTestId := lower (randAlpha 6) -}}
+{{- /* Use lowercase alphanumeric characters beginning with a letter for maximum azure resource naming compatibility */ -}}
+{{- $uniqueTestId := lower (print "s" (trunc 5 (sha1sum $resourceGroupName) ) ) -}}
 {{- /* Create add Stress context to top level keys of global context */}}
 {{- $_stress := dict "Scenario" $_scenario "ResourceGroupName" $resourceGroupName "BaseName" $uniqueTestId -}}
 {{- $_instance := deepCopy ($_global | merge (dict "Stress" $_stress )) -}}