Update main.go

README_GO.md

@@ -21,14 +21,17 @@ backend {{ .Name }}
   cookie {{ .CookieName }} {{ .CookieFlags }}
   {{- end }}
 
+  {{- if .HealthCheck }}
+  option httpchk GET {{ .HealthCheck }}
+  http-check expect status 200
+  {{- end }}
+
+  {{- $backend := . }}
   {{- range .Servers }}
-  server {{ .Name }} {{ .Address }}:{{ .Port }}{{ if $.HealthCheck }} check{{ end }}{{ if $.CookieName }} cookie {{ .Cookie }}{{ end }} {{ $.ServerOptions }}
+  server {{ .Name }} {{ .Address }}:{{ .Port }}{{ if $backend.HealthCheck }} check{{ end }}{{ if $backend.CookieName }} cookie {{ .Cookie }}{{ end }}{{ if $backend.ServerOptions }} {{ $backend.ServerOptions }}{{ end }}
   {{- end }}
 
 {{- end }}
-
-{{- end }}
-
 ```
 
 
@@ -45,8 +48,7 @@ Environment=KUBERNETES_HOST=https://10.0.20.7:6443
 Environment=KUBERNETES_TOKEN=eyJhbGciOi...
 Environment=KUBERNETES_VERIFYSSL=false
 Environment=HAPROXY_TEMPLATE=/etc/haproxy/haproxy.tmpl
-ExecStart=/path/to/haproxy-generator > /etc/haproxy/haproxy.cfg
-ExecStartPost=/bin/systemctl restart haproxy
+ExecStart=/bin/bash /etc/haproxy/haproxy-generator.sh
 
 ```
 
@@ -66,6 +68,24 @@ WantedBy=timers.target
 
 ```
 
+# Reload Script for post start
+
+Copy the script to /etc/haproxy/haproxy-generator.sh
+```
+#!/bin/bash
+
+/usr/local/bin/haproxy-generator > /etc/haproxy/haproxy.cfg.new
+DIFF=$(diff /etc/haproxy/haproxy.cfg /etc/haproxy/haproxy.cfg.new)
+/sbin/haproxy -f /etc/haproxy/haproxy.cfg.new -c
+VALID=$?
+
+if [ "$DIFF" != "" ] && [ $VALID -eq 0 ]
+then
+    mv /etc/haproxy/haproxy.cfg.new /etc/haproxy/haproxy.cfg
+    /usr/sbin/service haproxy restart
+fi
+```
+
 # Service Annotations
 
 | Annotation-Key                 | Beschreibung                                                                | Typ     | Beispielwert               |

main.go

@@ -33,7 +33,7 @@ type Backend struct {
 	Mode          string
 	CookieName    string
 	CookieFlags   string
-	HealthCheck   bool
+	HealthCheck   string
 	ServerOptions string
 	Servers       []BackendServer
 }
@@ -188,15 +188,12 @@ func main() {
 
 		key := svc.Metadata.Namespace + "/" + svc.Metadata.Name
 		ep, found := endpointMap[key]
-		if !found || len(ep.Subsets) == 0 {
-			continue
-		}
 
 		b := Backend{
 			Name:        "SRV_" + strings.ReplaceAll(svc.Metadata.Name, " ", "-"),
 			Balance:     "leastconn",
 			Mode:        "tcp",
-			HealthCheck: true,
+			HealthCheck: "",
 		}
 
 		if val, ok := ann["haproxy/mode"]; ok && val != "" {
@@ -208,8 +205,8 @@ func main() {
 		if val, ok := ann["haproxy/cookie-flags"]; ok && val != "" {
 			b.CookieFlags = val
 		}
-		if val, ok := ann["haproxy/health-check"]; ok && strings.ToLower(val) == "false" {
-			b.HealthCheck = false
+		if val, ok := ann["haproxy/health-check"]; ok && val != "" {
+			b.HealthCheck = val
 		}
 		if val, ok := ann["haproxy/server-options"]; ok && val != "" {
 			b.ServerOptions = val
@@ -223,33 +220,36 @@ func main() {
 		}
 
 		servers := []BackendServer{}
-		serverIndex := 1
-		for _, subset := range ep.Subsets {
-			for _, addr := range subset.Addresses {
-				for _, port := range subset.Ports {
-					if targetPort != 0 && port.Port != targetPort {
-						continue
+
+		if found && len(ep.Subsets) > 0 {
+			for _, subset := range ep.Subsets {
+				for _, addr := range subset.Addresses {
+					for _, port := range subset.Ports {
+						if targetPort != 0 && port.Port != targetPort {
+							continue
+						}
+						cookie := hashString(fmt.Sprintf("%s-%s-%d", svc.Metadata.Name, addr.IP, port.Port))
+						serverName := fmt.Sprintf("%s_%d", svc.Metadata.Name, cookie)
+						servers = append(servers, BackendServer{
+							Name:    serverName,
+							Address: addr.IP,
+							Port:    port.Port,
+							Cookie:  cookie,
+						})
 					}
-					cookie := hashString(fmt.Sprintf("%s-%s-%d", svc.Metadata.Name, addr.IP, port.Port))
-					serverName := fmt.Sprintf("%s_%d", svc.Metadata.Name, serverIndex)
-					serverIndex++
-					servers = append(servers, BackendServer{
-						Name:    serverName,
-						Address: addr.IP,
-						Port:    port.Port,
-						Cookie:  cookie,
-					})
 				}
 			}
 		}
+
 		b.Servers = servers
-		log.Printf("Backend %s: ServerOptions = %q", b.Name, b.ServerOptions)
 		backends = append(backends, b)
 	}
+
 	tmplAbsPath, err := filepath.Abs(templatePath)
 	if err != nil {
 		log.Fatalf("Failed to get absolute path: %v", err)
 	}
+	
 	tmpl, err := getTemplate(tmplAbsPath)
 	if err != nil {
 		log.Fatalf("Failed to parse template: %v", err)