Allow custom Postgres pod environment variables

pkg/cluster/k8sres.go

@@ -362,6 +362,13 @@ func (c *Cluster) generatePodTemplate(resourceRequirements *v1.ResourceRequireme
 	if cloneDescription.ClusterName != "" {
 		envVars = append(envVars, c.generateCloneEnvironment(cloneDescription)...)
 	}
+
+	envFromSource := []v1.EnvFromSource{}
+	if c.OpConfig.PodEnvironmentConfigMap != "" {
+		configMapRef := v1.ConfigMapEnvSource{LocalObjectReference: v1.LocalObjectReference{Name: c.OpConfig.PodEnvironmentConfigMap}}
+		envFromSource = append(envFromSource, v1.EnvFromSource{ConfigMapRef: &configMapRef})
+	}
+
 	privilegedMode := true
 	containerImage := c.OpConfig.DockerImage
 	if dockerImage != nil && *dockerImage != "" {
@@ -393,6 +400,7 @@ func (c *Cluster) generatePodTemplate(resourceRequirements *v1.ResourceRequireme
 			},
 		},
 		Env: envVars,
+		EnvFrom: envFromSource,
 		SecurityContext: &v1.SecurityContext{
 			Privileged: &privilegedMode,
 		},

pkg/util/config/config.go

@@ -30,6 +30,7 @@ type Resources struct {
 	DefaultMemoryRequest    string            `name:"default_memory_request" default:"100Mi"`
 	DefaultCPULimit         string            `name:"default_cpu_limit" default:"3"`
 	DefaultMemoryLimit      string            `name:"default_memory_limit" default:"1Gi"`
+	PodEnvironmentConfigMap string            `name:"pod_environment_configmap" default:""`
 	NodeEOLLabel            map[string]string `name:"node_eol_label" default:"lifecycle-status:pending-decommission"`
 	NodeReadinessLabel      map[string]string `name:"node_readiness_label" default:"lifecycle-status:ready"`
 }