feat(worker): expose SSH port for pam_slurm_adopt

Add SSH port (22) to worker container specification to enable users to
SSH into worker nodes where they have running jobs. This works with
updated slurmd images that include pam_slurm_adopt for access control.

Author: faganihajizada

internal/builder/worker_app.go

@@ -21,6 +21,7 @@ import (
 
 const (
 	SlurmdPort = 6818
+	SshPort    = 22
 
 	slurmdUser = "root"
 
@@ -113,6 +114,11 @@ func (b *Builder) slurmdContainer(nodeset *slinkyv1alpha1.NodeSet, controller *s
 					ContainerPort: SlurmdPort,
 					Protocol:      corev1.ProtocolTCP,
 				},
+				{
+					Name:          "ssh",
+					ContainerPort: SshPort,
+					Protocol:      corev1.ProtocolTCP,
+				},
 			},
 			StartupProbe: &corev1.Probe{
 				ProbeHandler: corev1.ProbeHandler{

internal/builder/worker_app_test.go

@@ -93,6 +93,18 @@ func TestBuilder_BuildWorkerPodTemplate(t *testing.T) {
 				t.Errorf("Containers[0].Ports[0].ContainerPort = %v , want = %v",
 					got.Spec.Containers[0].Ports[0].Name, SlurmdPort)
 
+			case len(got.Spec.Containers[0].Ports) != 2:
+				t.Errorf("len(Containers[0].Ports) = %v , want = 2 (slurmd + ssh)",
+					len(got.Spec.Containers[0].Ports))
+
+			case got.Spec.Containers[0].Ports[1].Name != "ssh":
+				t.Errorf("Containers[0].Ports[1].Name = %v , want = ssh",
+					got.Spec.Containers[0].Ports[1].Name)
+
+			case got.Spec.Containers[0].Ports[1].ContainerPort != SshPort:
+				t.Errorf("Containers[0].Ports[1].ContainerPort = %v , want = %v",
+					got.Spec.Containers[0].Ports[1].ContainerPort, SshPort)
+
 			case got.Spec.Subdomain == "":
 				t.Errorf("Subdomain = %v , want = non-empty", got.Spec.Subdomain)