Make pod termination grace period configurable

manifests/configmap.yaml

@@ -31,3 +31,4 @@ data:
   enable_load_balancer: "true"
   api_port: "8080"
   ring_log_lines: "100"
+  pod_terminate_grace_period: 5m

pkg/cluster/k8sres.go

@@ -303,7 +303,7 @@ func (c *Cluster) generatePodTemplate(resourceRequirements *v1.ResourceRequireme
 			Privileged: &privilegedMode,
 		},
 	}
-	terminateGracePeriodSeconds := int64(30)
+	terminateGracePeriodSeconds := int64(c.OpConfig.PodTerminateGracePeriod.Seconds())
 
 	podSpec := v1.PodSpec{
 		ServiceAccountName:            c.OpConfig.ServiceAccountName,

pkg/util/config/config.go

@@ -63,6 +63,8 @@ type Config struct {
 	Workers              uint32         `name:"workers" default:"4"`
 	APIPort              int            `name:"api_port" default:"8080"`
 	RingLogLines         int            `name:"ring_log_lines" default:"100"`
+
+	PodTerminateGracePeriod time.Duration `name:"pod_terminate_grace_period" default:"5m"`
 }
 
 // MustMarshal marshals the config or panics