config: pass pod name namespace and ip via env

Allow samba-operator to discover self settings by passing explicit
environment variables. Needed in order to detect cluster-type (via
pod's annotations) when running over OpenShift.

Signed-off-by: Shachar Sharon <[email protected]>

Author: synarete

config/manager-full/auth_proxy_patch.yaml

@@ -29,3 +29,16 @@ spec:
           args:
             - "--metrics-addr=127.0.0.1:8080"
             - "--enable-leader-election"
+          env:
+            - name: SAMBA_OP_POD_NAME
+              valueFrom:
+                fieldRef:
+                  fieldPath: metadata.name
+            - name: SAMBA_OP_POD_NAMESPACE
+              valueFrom:
+                fieldRef:
+                  fieldPath: metadata.namespace
+            - name: SAMBA_OP_POD_IP
+              valueFrom:
+                fieldRef:
+                  fieldPath: status.podIP

internal/conf/config.go

@@ -67,6 +67,12 @@ type OperatorConfig struct {
 	// operator should run metrics-exporter container within samba-server pod.
 	// Valid values are "enabled", "disabled" or empty string (default).
 	MetricsExporterMode string `mapstructure:"metrics-exporter-mode"`
+	// PodName is a (string) which defines the currnt operator pod name.
+	PodName string `mapstructure:"pod-name"`
+	// PodNamespace is a (string) which defines the currnt operator namespace.
+	PodNamespace string `mapstructure:"pod-namespace"`
+	// PodIP is a (string) which defines the currnt pod cluster-ip.
+	PodIP string `mapstructure:"pod-ip"`
 }
 
 // Validate the OperatorConfig returning an error if the config is not
@@ -113,6 +119,9 @@ func NewSource() *Source {
 	v.SetDefault("smbd-port", d.SmbdPort)
 	v.SetDefault("service-account-name", d.ServiceAccountName)
 	v.SetDefault("metrics-exporter-mode", d.MetricsExporterMode)
+	v.SetDefault("pod-name", d.PodName)
+	v.SetDefault("pod-namespace", d.PodNamespace)
+	v.SetDefault("pod-ip", d.PodIP)
 	return &Source{v: v}
 }