insecureSkipVerify for alertmanager connections

Documentation/api.md

@@ -65,6 +65,7 @@ AlertmanagerEndpoints defines a selection of a single Endpoints object containin
 | port | Port the Alertmanager API is exposed on. | intstr.IntOrString | true |
 | scheme | Scheme to use when firing alerts. | string | false |
 | pathPrefix | Prefix for the HTTP path alerts are pushed to. | string | false |
+| insecureSkipVerify | Disable target certificate validation. | bool | false |
 
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example/prometheus-operator-crd/prometheus.crd.yaml

@@ -544,6 +544,9 @@ spec:
                       Endpoints object containing alertmanager IPs to fire alerts
                       against.
                     properties:
+                      insecureSkipVerify:
+                        description: Disable target certificate validation.
+                        type: boolean
                       name:
                         description: Name of Endpoints object in Namespace.
                         type: string

pkg/client/monitoring/v1/openapi_generated.go

@@ -128,6 +128,13 @@ func GetOpenAPIDefinitions(ref common.ReferenceCallback) map[string]common.OpenA
 								Format:      "",
 							},
 						},
+						"insecureSkipVerify": {
+							SchemaProps: spec.SchemaProps{
+								Description: "Disable target certificate validation.",
+								Type:        []string{"boolean"},
+								Format:      "",
+							},
+						},
 					},
 					Required: []string{"namespace", "name", "port"},
 				},

pkg/client/monitoring/v1/types.go

@@ -269,6 +269,8 @@ type AlertmanagerEndpoints struct {
 	Scheme string `json:"scheme,omitempty"`
 	// Prefix for the HTTP path alerts are pushed to.
 	PathPrefix string `json:"pathPrefix,omitempty"`
+	// Disable target certificate validation.
+	InsecureSkipVerify bool `json:"insecureSkipVerify,omitempty"`
 }
 
 // ServiceMonitor defines monitoring for a set of services.

pkg/prometheus/promcfg.go

@@ -475,6 +475,7 @@ func generateAlertmanagerConfig(version semver.Version, am v1.AlertmanagerEndpoi
 	cfg := yaml.MapSlice{
 		{Key: "path_prefix", Value: am.PathPrefix},
 		{Key: "scheme", Value: am.Scheme},
+		{Key: "tls_config", Value: yaml.MapSlice{{Key: "insecure_skip_verify", Value: am.InsecureSkipVerify}}},
 	}
 
 	switch version.Major {