Merge pull request #1102 from SomtochiAma/topology-spread

Add field `spec.analysis.canaryReadyThreshold` for configuring canary threshold

artifacts/flagger/crd.yaml

@@ -829,6 +829,9 @@ spec:
                     primaryReadyThreshold:
                       description: Percentage of pods that need to be available to consider primary as ready
                       type: number
+                    canaryReadyThreshold:
+                      description: Percentage of pods that need to be available to consider canary as ready
+                      type: number
                     match:
                       description: A/B testing match conditions
                       type: array

charts/flagger/crds/crd.yaml

@@ -829,6 +829,9 @@ spec:
                     primaryReadyThreshold:
                       description: Percentage of pods that need to be available to consider primary as ready
                       type: number
+                    canaryReadyThreshold:
+                      description: Percentage of pods that need to be available to consider canary as ready
+                      type: number
                     match:
                       description: A/B testing match conditions
                       type: array

docs/gitbook/usage/how-it-works.md

@@ -343,6 +343,10 @@ Spec:
     # before starting rollout. this is optional and the default is 100
     # percentage (0-100)
     primaryReadyThreshold: 100
+    # threshold of canary pods that need to be available to consider it ready
+    # before starting rollout. this is optional and the default is 100
+    # percentage (0-100)
+    canaryReadyThreshold: 100
     # canary match conditions
     # used for A/B Testing
     match:

kustomize/base/flagger/crd.yaml

@@ -829,6 +829,9 @@ spec:
                     primaryReadyThreshold:
                       description: Percentage of pods that need to be available to consider primary as ready
                       type: number
+                    canaryReadyThreshold:
+                      description: Percentage of pods that need to be available to consider canary as ready
+                      type: number
                     match:
                       description: A/B testing match conditions
                       type: array

pkg/apis/flagger/v1beta1/canary.go

@@ -30,6 +30,7 @@ const (
 	ProgressDeadlineSeconds = 600
 	AnalysisInterval        = 60 * time.Second
 	PrimaryReadyThreshold   = 100
+	CanaryReadyThreshold    = 100
 	MetricInterval          = "1m"
 )
 
@@ -233,6 +234,9 @@ type CanaryAnalysis struct {
 	// Percentage of pods that need to be available to consider primary as ready
 	PrimaryReadyThreshold *int `json:"primaryReadyThreshold,omitempty"`
 
+	// Percentage of pods that need to be available to consider canary as ready
+	CanaryReadyThreshold *int `json:"canaryReadyThreshold,omitempty"`
+
 	// Alert list for this canary analysis
 	Alerts []CanaryAlert `json:"alerts,omitempty"`
 
@@ -452,6 +456,14 @@ func (c *Canary) GetAnalysisPrimaryReadyThreshold() int {
 	return PrimaryReadyThreshold
 }
 
+// GetAnalysisCanaryReadyThreshold returns the canary canaryReadyThreshold (default 100)
+func (c *Canary) GetAnalysisCanaryReadyThreshold() int {
+	if c.GetAnalysis().CanaryReadyThreshold != nil {
+		return *c.GetAnalysis().CanaryReadyThreshold
+	}
+	return CanaryReadyThreshold
+}
+
 // GetMetricInterval returns the metric interval default value (1m)
 func (c *Canary) GetMetricInterval() string {
 	return MetricInterval

pkg/canary/daemonset_ready.go

@@ -52,7 +52,7 @@ func (c *DaemonSetController) IsCanaryReady(cd *flaggerv1.Canary) (bool, error)
 		return true, fmt.Errorf("daemonset %s.%s get query error: %w", targetName, cd.Namespace, err)
 	}
 
-	retryable, err := c.isDaemonSetReady(cd, canary, 100)
+	retryable, err := c.isDaemonSetReady(cd, canary, cd.GetAnalysisCanaryReadyThreshold())
 	if err != nil {
 		return retryable, fmt.Errorf("canary damonset %s.%s not ready with retryable %v: %w",
 			targetName, cd.Namespace, retryable, err)

pkg/canary/deployment_ready.go

@@ -59,7 +59,7 @@ func (c *DeploymentController) IsCanaryReady(cd *flaggerv1.Canary) (bool, error)
 		return true, fmt.Errorf("deployment %s.%s get query error: %w", targetName, cd.Namespace, err)
 	}
 
-	retryable, err := c.isDeploymentReady(canary, cd.GetProgressDeadlineSeconds(), 100)
+	retryable, err := c.isDeploymentReady(canary, cd.GetProgressDeadlineSeconds(), cd.GetAnalysisCanaryReadyThreshold())
 	if err != nil {
 		return retryable, fmt.Errorf(
 			"canary deployment %s.%s not ready: %w",