Do more stuff

cmd/dataplane/main.go

@@ -17,6 +17,7 @@ limitations under the License.
 package main
 
 import (
+	"fmt"
 	"net/http"
 	"os"
 	"os/signal"
@@ -30,13 +31,13 @@ import (
 	dataplanenginx "k8s.io/ingress-nginx/cmd/dataplane/pkg/nginx"
 	"k8s.io/ingress-nginx/internal/nginx"
 	"k8s.io/ingress-nginx/pkg/metrics"
+	"k8s.io/ingress-nginx/version"
 )
 
 func main() {
 	klog.InitFlags(nil)
 
-	//fmt.Println(version.String())
-	//var err error
+	fmt.Println(version.String())
 
 	reg := prometheus.NewRegistry()
 

deploy/static/provider/kind/deploy.yaml

@@ -493,7 +493,7 @@ spec:
               fieldPath: metadata.namespace
         - name: LD_PRELOAD
           value: /usr/local/lib/libmimalloc.so
-        image: gcr.io/k8s-staging-ingress-nginx/dataplane:v0.0.16
+        image: gcr.io/k8s-staging-ingress-nginx/dataplane:v0.0.21
         imagePullPolicy: IfNotPresent
         lifecycle:
           preStop:
@@ -534,6 +534,8 @@ spec:
           name: ingress-controller
         - mountPath: /etc/nginx/conf
           name: nginx-conf
+        - mountPath: /var/run/secrets/kubernetes.io/serviceaccount
+          name: emptysecret
       dnsPolicy: ClusterFirst
       nodeSelector:
         ingress-ready: "true"
@@ -557,6 +559,9 @@ spec:
       - name: nginx-conf
         emptyDir:
           sizeLimit: 500Mi
+      - name: emptysecret
+        emptyDir:
+          sizeLimit: 1Mi
 ---
 apiVersion: batch/v1
 kind: Job

internal/dataplane/nginx/nginx.go

@@ -7,6 +7,7 @@ import (
 	"os/exec"
 	"path/filepath"
 	"syscall"
+	"time"
 
 	"k8s.io/klog/v2"
 )
@@ -75,9 +76,7 @@ func (nc NginxCommand) Start(errch chan error) error {
  			return err
     	}
 	}
-	if err := os.WriteFile(ReadyFile, []byte("OK"), 0644); err != nil {
-		return err
-	}
+
 	cmd := nc.execCommand(true)
 	cmd.Stdout = os.Stdout
 	cmd.Stderr = os.Stderr
@@ -88,6 +87,10 @@ func (nc NginxCommand) Start(errch chan error) error {
 	go func() {
 		errch <- cmd.Wait()
 	}()
+	now := time.Now().String()
+	if err := os.WriteFile(ReadyFile, []byte(now), 0644); err != nil {
+		return err
+	}
 	return nil
 }
 

internal/dataplane/nginx/remote.go

@@ -22,23 +22,6 @@ func NewNginxRemote(host string) NginxExecutor {
 }
 
 func (nc NginxRemote) Start(errch chan error) error {
-	/*getStart, err := url.JoinPath(nc.host, "start") // TODO: Turn this path a constant on dataplane
-	if err != nil {
-		return err
-	}
-	resp, err := http.Get(getStart)
-	if err != nil {
-		return err
-	}
-	body, err := io.ReadAll(resp.Body)
-	if err != nil {
-		return err
-	}
-	if resp.StatusCode != http.StatusOK {
-		return fmt.Errorf("error executing start: %s", string(body))
-	}*/
-
-	// TODO: Add a ping/watcher to backend and populate error channel
 	return nil
 }
 

internal/ingress/controller/nginx.go

@@ -183,7 +183,21 @@ func NewNGINXController(config *Configuration, mc metric.Collector) *NGINXContro
 		klog.Fatalf("Error creating file watcher for %v: %v", nginx.TemplatePath, err)
 	}
 
-	filesToWatch := []string{nginxdataplane.ReadyFile}
+	// With this test, we will check if the readiness file is not changed. This file is always created or 
+	// changed by dataplane on its start. In case the dataplane dies and restarts, the file will be 
+	// updated with the current time. 
+	// This watcher will then detect a change on the file, meaning controller should restart and reconfigure
+	// everything.
+	// It should be guaranteed by the dataplane that this file is changed just once 
+	// NGINX finishes starting
+	_, err = file.NewFileWatcherUpdateOnly(nginxdataplane.ReadyFile, true, func() {
+		klog.Fatalf("readiness file changed, restarting contorller")
+	})
+	if err != nil {
+		klog.Fatalf("error creating file watcher for %v: %v", nginxdataplane.ReadyFile, err)
+	}
+
+	filesToWatch := []string{}
 
 	if err := os.Mkdir("/etc/ingress-controller/geoip/", 0o755); err != nil && !os.IsExist(err) {
 		klog.Fatalf("Error creating geoip dir: %v", err)

pkg/flags/flags.go

@@ -261,7 +261,7 @@ https://blog.maxmind.com/2019/12/18/significant-changes-to-accessing-and-using-g
 	parser.EnableAnnotationValidation = *enableAnnotationValidation
 
 	// check port collisions
-	if !ing_net.IsPortAvailable(*httpPort) {
+	/*if !ing_net.IsPortAvailable(*httpPort) {
 		return false, nil, fmt.Errorf("port %v is already in use. Please check the flag --http-port", *httpPort)
 	}
 
@@ -283,7 +283,7 @@ https://blog.maxmind.com/2019/12/18/significant-changes-to-accessing-and-using-g
 
 	if !ing_net.IsPortAvailable(*profilerPort) {
 		return false, nil, fmt.Errorf("port %v is already in use. Please check the flag --profiler-port", *profilerPort)
-	}
+	}*/
 
 	nginx.StatusPort = *statusPort
 	nginx.StreamPort = *streamPort

pkg/util/file/file_watcher.go

@@ -37,18 +37,25 @@ type OSFileWatcher struct {
 	watcher *fsnotify.Watcher
 	// onEvent callback to be invoked after the file being watched changes
 	onEvent func()
+	updateOnly bool
 }
 
 // NewFileWatcher creates a new FileWatcher
-func NewFileWatcher(file string, onEvent func()) (Watcher, error) {
+func NewFileWatcherUpdateOnly(file string, updateOnly bool, onEvent func()) (Watcher, error) {
 	fw := OSFileWatcher{
 		file:    file,
 		onEvent: onEvent,
+		updateOnly: updateOnly,
 	}
 	err := fw.watch()
 	return fw, err
 }
 
+// NewFileWatcher creates a new FileWatcher
+func NewFileWatcher(file string, onEvent func()) (Watcher, error) {
+	return NewFileWatcherUpdateOnly(file, false, onEvent)
+}
+
 // Close ends the watch
 func (f OSFileWatcher) Close() error {
 	return f.watcher.Close()
@@ -72,7 +79,7 @@ func (f *OSFileWatcher) watch() error {
 		for {
 			select {
 			case event := <-watcher.Events:
-				if event.Has(fsnotify.Create) ||
+				if (!f.updateOnly && event.Has(fsnotify.Create)) ||
 					event.Has(fsnotify.Write) {
 					if finfo, err := os.Lstat(event.Name); err != nil {
 						log.Printf("can not lstat file: %v\n", err)

rootfs/Dockerfile

@@ -39,7 +39,7 @@ RUN apk update \
   && adduser -S -D -H -u 101 -h /usr/local/nginx \
   -s /sbin/nologin -G www-data -g www-data www-data
 
-COPY --chown=www-data:www-data etc /etc
+COPY --chown=www-data:www-data etc/nginx/template /etc/nginx/template
 
 COPY --chown=www-data:www-data bin/${TARGETARCH}/dbg /
 COPY --chown=www-data:www-data bin/${TARGETARCH}/nginx-ingress-controller /
@@ -54,9 +54,6 @@ RUN bash -xeu -c ' \
     /etc/ingress-controller/geoip \
     /etc/ingress-controller/telemetry \
     /etc/ingress-controller/tempconf \
-    /etc/nginx/conf \
-    /var/log \
-    /var/log/nginx \
     /tmp/nginx \
   ); \
   for dir in "${writeDirs[@]}"; do \
@@ -74,9 +71,4 @@ RUN apk add --no-cache libcap \
   && setcap -v cap_net_bind_service=+ep /nginx-ingress-controller \
   && apk del libcap
 USER www-data
-
-# Create symlinks to redirect nginx logs to stdout and stderr docker log collector
-RUN  ln -sf /dev/stdout /var/log/nginx/access.log \
-  && ln -sf /dev/stderr /var/log/nginx/error.log
-
 ENTRYPOINT ["/nginx-ingress-controller"]

test/e2e/run-kind-e2e.sh

@@ -88,7 +88,7 @@ if [ "${SKIP_INGRESS_IMAGE_CREATION}" = "false" ]; then
     make BASE_IMAGE="${NGINX_BASE_IMAGE}" -C "${DIR}"/../../ clean-image build image-chroot
     docker tag ${REGISTRY}/controller-chroot:${TAG} ${REGISTRY}/controller:${TAG}
   else
-    make BASE_IMAGE="${NGINX_BASE_IMAGE}" -C "${DIR}"/../../ clean-image build image
+    make BASE_IMAGE="${NGINX_BASE_IMAGE}" -C "${DIR}"/../../ build image image-dataplane
   fi
 
   echo "[dev-env] .. done building controller images"
@@ -111,6 +111,6 @@ KIND_WORKERS=$(kind get nodes --name="${KIND_CLUSTER_NAME}" | grep worker | awk
 echo "[dev-env] copying docker images to cluster..."
 
 kind load docker-image --name="${KIND_CLUSTER_NAME}" --nodes="${KIND_WORKERS}" nginx-ingress-controller:e2e
-kind load docker-image --name="${KIND_CLUSTER_NAME}" --nodes="${KIND_WORKERS}" "${REGISTRY}"/controller:"${TAG}"
+kind load docker-image --name="${KIND_CLUSTER_NAME}" --nodes="${KIND_WORKERS}" "${REGISTRY}"/controller:"${TAG}" "${REGISTRY}"/dataplane:"${TAG}"
 echo "[dev-env] running e2e tests..."
 make -C "${DIR}"/../../ e2e-test

version/version.go

@@ -33,12 +33,18 @@ var (
 
 // String returns information about the release.
 func String() string {
+	ngxVer := nginx.Version()
+	controllerType := "controller"
+	if ngxVer != "N/A" {
+		ngxVer = fmt.Sprintf("NGINX:         %s", ngxVer)
+		controllerType = "dataplane"
+	}
 	return fmt.Sprintf(`-------------------------------------------------------------------------------
-NGINX Ingress controller
+NGINX Ingress %s
   Release:       %v
   Build:         %v
   Repository:    %v
-  %v
+  %s
 -------------------------------------------------------------------------------
-`, RELEASE, COMMIT, REPO, nginx.Version())
+`, controllerType, RELEASE, COMMIT, REPO, ngxVer)
 }