Don't take a reference a var in a loop

CHANGELOG.md

@@ -10,6 +10,7 @@ BUG FIXES:
   * api: Fix TLS in logs and fs commands/APIs [GH-2290]
   * cli/plan: Fix diff alignment and remove no change DC output [GH-2465]
   * client: Fix panic when restarting non-running tasks [GH-2480]
+  * client: Fix env vars when multiple tasks and ports present [GH-2491]
   * client: Fix `user` attribute disregarding membership of non-main group
     [GH-2461]
   * client/vault: Stop Vault token renewal on task exit [GH-2495]

client/driver/env/env.go

@@ -203,12 +203,12 @@ func (t *TaskEnvironment) Build() *TaskEnvironment {
 				continue
 			}
 			for _, nw := range resources.Networks {
-				ports := make([]*structs.Port, 0, len(nw.ReservedPorts)+len(nw.DynamicPorts))
+				ports := make([]structs.Port, 0, len(nw.ReservedPorts)+len(nw.DynamicPorts))
 				for _, port := range nw.ReservedPorts {
-					ports = append(ports, &port)
+					ports = append(ports, port)
 				}
 				for _, port := range nw.DynamicPorts {
-					ports = append(ports, &port)
+					ports = append(ports, port)
 				}
 				for _, p := range ports {
 					key := fmt.Sprintf("%s%s_%s", AddrPrefix, taskName, p.Label)

client/driver/env/env_test.go

@@ -138,7 +138,24 @@ func TestEnvironment_ReplaceEnv_Mixed(t *testing.T) {
 func TestEnvironment_AsList(t *testing.T) {
 	n := mock.Node()
 	a := mock.Alloc()
+	a.Resources.Networks[0].ReservedPorts = append(a.Resources.Networks[0].ReservedPorts,
+		structs.Port{Label: "ssh", Value: 22},
+		structs.Port{Label: "other", Value: 1234},
+	)
 	a.TaskResources["web"].Networks[0].DynamicPorts[0].Value = 2000
+	a.TaskResources["ssh"] = &structs.Resources{
+		Networks: []*structs.NetworkResource{
+			{
+				Device: "eth0",
+				IP:     "192.168.0.100",
+				MBits:  50,
+				ReservedPorts: []structs.Port{
+					{Label: "ssh", Value: 22},
+					{Label: "other", Value: 1234},
+				},
+			},
+		},
+	}
 	env := NewTaskEnvironment(n).
 		SetNetworks(networks).
 		SetPortMap(portMap).
@@ -165,13 +182,23 @@ func TestEnvironment_AsList(t *testing.T) {
 		"NOMAD_IP_web_main=192.168.0.100",
 		"NOMAD_IP_web_http=192.168.0.100",
 		"NOMAD_TASK_NAME=taskA",
+		"NOMAD_ADDR_ssh_other=192.168.0.100:1234",
+		"NOMAD_ADDR_ssh_ssh=192.168.0.100:22",
+		"NOMAD_IP_ssh_other=192.168.0.100",
+		"NOMAD_IP_ssh_ssh=192.168.0.100",
+		"NOMAD_PORT_ssh_other=1234",
+		"NOMAD_PORT_ssh_ssh=22",
+		fmt.Sprintf("NOMAD_ALLOC_ID=%s", a.ID),
 	}
-	allocID := fmt.Sprintf("NOMAD_ALLOC_ID=%s", a.ID)
-	exp = append(exp, allocID)
 	sort.Strings(act)
 	sort.Strings(exp)
-	if !reflect.DeepEqual(act, exp) {
-		t.Fatalf("env.List() returned %v;\n want:\n%v", strings.Join(act, "\n"), strings.Join(exp, "\n"))
+	if len(act) != len(exp) {
+		t.Fatalf("wat: %d != %d", len(act), len(exp))
+	}
+	for i := range act {
+		if act[i] != exp[i] {
+			t.Errorf("%d %q != %q", i, act[i], exp[i])
+		}
 	}
 }