[skywalking-swck] branch master updated: Add stabilization windows feature in satellite HPA documentation and sample file (#57)

[wu...@apache.org]

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wusheng pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/skywalking-swck.git


The following commit(s) were added to refs/heads/master by this push:
     new 957844f  Add stabilization windows feature in satellite HPA documentation and sample file (#57)
957844f is described below

commit 957844fe3c773ae425ad3a167f43c5abf63dcfb5
Author: mrproliu <74...@qq.com>
AuthorDate: Fri Jan 7 20:22:27 2022 +0800

    Add stabilization windows feature in satellite HPA documentation and sample file (#57)
---
 docs/examples/satellite.md                 | 1 +
 operator/config/samples/satellite-hpa.yaml | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/docs/examples/satellite.md b/docs/examples/satellite.md
index c344547..4da5f4c 100644
--- a/docs/examples/satellite.md
+++ b/docs/examples/satellite.md
@@ -49,6 +49,7 @@ config:
 ```
 
 4. Add the HorizontalPodAutoScaler `CRD`, and [update the config file](../../operator/config/samples/satellite-hpa.yaml) the `service` and `target` to your excepted config.
+   It's recommend to set the `stabilizationWindowSeconds` and `selectPolicy` of scaling up in HPA, which would help prevent continuous scaling up of pods due to metric delay fluctuations. 
 5. Check the HorizontalPodAutoScaler in the Kubernetes:
 
 ```shell
diff --git a/operator/config/samples/satellite-hpa.yaml b/operator/config/samples/satellite-hpa.yaml
index 085529d..d1eed79 100644
--- a/operator/config/samples/satellite-hpa.yaml
+++ b/operator/config/samples/satellite-hpa.yaml
@@ -25,9 +25,16 @@ spec:
     apiVersion: apps/v1
     kind: Deployment
     name: skywalking-system-satellite
+  # Satellite count range limit
   minReplicas: 1
   maxReplicas: 3
+  # Limit continuous scaling up
+  behavior:
+    scaleUp:
+      stabilizationWindowSeconds: 60
+      selectPolicy: Min
   metrics:
+    # Average number of connections threshold
     - type: External
       external:
         metric:
@@ -43,6 +50,7 @@ spec:
         target:
           type: Value
           value: 1900
+    # Average CPU usage threshold
     - type: External
       external:
         metric: