fix_the_checkpoint_no_hostip_bug

pkg/kubelet/checkpointmanager/checkpoint_manager_test.go

@@ -56,6 +56,8 @@ type PortMapping struct {
 	ContainerPort *int32
 	// Port number on the host.
 	HostPort *int32
+	// Host ip to expose.
+	HostIP string
 }
 
 // CheckpointData is a sample example structure to be used in test cases for checkpointing
@@ -151,17 +153,20 @@ func TestCheckpointManager(t *testing.T) {
 	port80 := int32(80)
 	port443 := int32(443)
 	proto := protocol("tcp")
+	ip1234 := "1.2.3.4"
 
 	portMappings := []*PortMapping{
 		{
 			&proto,
 			&port80,
 			&port80,
+			ip1234,
 		},
 		{
 			&proto,
 			&port443,
 			&port443,
+			ip1234,
 		},
 	}
 	checkpoint1 := newFakeCheckpointV1("check1", portMappings, true)

pkg/kubelet/dockershim/docker_checkpoint.go

@@ -46,6 +46,8 @@ type PortMapping struct {
 	ContainerPort *int32 `json:"container_port,omitempty"`
 	// Port number on the host.
 	HostPort *int32 `json:"host_port,omitempty"`
+	// Host ip to expose.
+	HostIP string `json:"host_ip,omitempty"`
 }
 
 // CheckpointData contains all types of data that can be stored in the checkpoint.

pkg/kubelet/dockershim/docker_sandbox.go

@@ -643,6 +643,7 @@ func constructPodSandboxCheckpoint(config *runtimeapi.PodSandboxConfig) checkpoi
 			HostPort:      &pm.HostPort,
 			ContainerPort: &pm.ContainerPort,
 			Protocol:      &proto,
+			HostIP:        pm.HostIp,
 		})
 	}
 	if config.GetLinux().GetSecurityContext().GetNamespaceOptions().GetNetwork() == runtimeapi.NamespaceMode_NODE {

pkg/kubelet/dockershim/docker_service.go

@@ -394,6 +394,7 @@ func (ds *dockerService) GetPodPortMappings(podSandboxID string) ([]*hostport.Po
 			HostPort:      *pm.HostPort,
 			ContainerPort: *pm.ContainerPort,
 			Protocol:      proto,
+			HostIP:        pm.HostIP,
 		})
 	}
 	return portMappings, nil