Allow multiple publish status addresses

TAG

@@ -1 +1 @@
-v0.44.0
+v0.45.0-dev.0

cmd/nginx/flags.go

@@ -138,7 +138,7 @@ extension for this to succeed.`)
 			`Define the sync frequency upper limit`)
 
 		publishStatusAddress = flags.String("publish-status-address", "",
-			`Customized address to set as the load-balancer status of Ingress objects this controller satisfies.
+			`Customized address (or addresses, separated by comma) to set as the load-balancer status of Ingress objects this controller satisfies.
 Requires the update-status parameter.`)
 
 		enableMetrics = flags.Bool("enable-metrics", true,

docs/user-guide/cli-arguments.md

@@ -38,7 +38,7 @@ They are set in the container spec of the `nginx-ingress-controller` Deployment
 | `--profiler-port`                  | Port to use for expose the ingress controller Go profiler when it is enabled. (default 10245) |
 | `--profiling`                      | Enable profiling via web interface host:port/debug/pprof/ (default true) |
 | `--publish-service`                | Service fronting the Ingress controller. Takes the form "namespace/name". When used together with update-status, the controller mirrors the address of this service's endpoints to the load-balancer status of all Ingress objects it satisfies. |
-| `--publish-status-address`         | Customized address to set as the load-balancer status of Ingress objects this controller satisfies. Requires the update-status parameter. |
+| `--publish-status-address`         | Customized address (or addresses, separated by comma) to set as the load-balancer status of Ingress objects this controller satisfies. Requires the update-status parameter. |
 | `--report-node-internal-ip-address`| Set the load-balancer status of Ingress objects to internal Node addresses instead of external. Requires the update-status parameter. |
 | `--skip_headers`                   | If true, avoid header prefixes in the log messages |
 | `--skip_log_headers`               | If true, avoid headers when opening log files |

internal/ingress/status/status.go

@@ -20,6 +20,7 @@ import (
 	"context"
 	"fmt"
 	"net"
+	"regexp"
 	"sort"
 	"strings"
 	"time"
@@ -165,7 +166,9 @@ func NewStatusSyncer(config Config) Syncer {
 // ingress controller is currently running
 func (s *statusSync) runningAddresses() ([]string, error) {
 	if s.PublishStatusAddress != "" {
-		return []string{s.PublishStatusAddress}, nil
+		re := regexp.MustCompile(`,\s*`)
+		multipleAddrs := re.Split(s.PublishStatusAddress, -1)
+		return multipleAddrs, nil
 	}
 
 	if s.PublishService != "" {

internal/ingress/status/status_test.go

@@ -594,6 +594,51 @@ func TestRunningAddressesWithPublishStatusAddress(t *testing.T) {
 		t.Errorf("returned %v but expected %v", rv, "127.0.0.1")
 	}
 }
+
+func TestRunningAddressesWithPublishStatusAddresses(t *testing.T) {
+	fk := buildStatusSync()
+	fk.PublishStatusAddress = "127.0.0.1,1.1.1.1"
+
+	ra, _ := fk.runningAddresses()
+	if ra == nil {
+		t.Fatalf("returned nil but expected valid []string")
+	}
+	rl := len(ra)
+	if len(ra) != 2 {
+		t.Errorf("returned %v but expected %v", rl, 2)
+	}
+	rv := ra[0]
+	rv2 := ra[1]
+	if rv != "127.0.0.1" {
+		t.Errorf("returned %v but expected %v", rv, "127.0.0.1")
+	}
+	if rv2 != "1.1.1.1" {
+		t.Errorf("returned %v but expected %v", rv2, "1.1.1.1")
+	}
+}
+
+func TestRunningAddressesWithPublishStatusAddressesAndSpaces(t *testing.T) {
+	fk := buildStatusSync()
+	fk.PublishStatusAddress = "127.0.0.1,  1.1.1.1"
+
+	ra, _ := fk.runningAddresses()
+	if ra == nil {
+		t.Fatalf("returned nil but expected valid []string")
+	}
+	rl := len(ra)
+	if len(ra) != 2 {
+		t.Errorf("returned %v but expected %v", rl, 2)
+	}
+	rv := ra[0]
+	rv2 := ra[1]
+	if rv != "127.0.0.1" {
+		t.Errorf("returned %v but expected %v", rv, "127.0.0.1")
+	}
+	if rv2 != "1.1.1.1" {
+		t.Errorf("returned %v but expected %v", rv2, "1.1.1.1")
+	}
+}
+
 func TestSliceToStatus(t *testing.T) {
 	fkEndpoints := []string{
 		"10.0.0.1",