Update example about production

go/hello-api/Makefile

@@ -6,7 +6,7 @@ BINARY_NAME=hello-api
 DOCKER_USERNAME=ledongthuc
 DOCKER_IMG_NAME=$(BINARY_NAME)
 DOCKER_VERSION=local
-CUSTOM_ROUTES=/custom_url:this is custom;/random.8b3ec8ff2ac96774ff4e6965e9bba307.html:this is random
+CUSTOM_ROUTES=/:custom root;/custom_url:this is custom;/random.8b3ec8ff2ac96774ff4e6965e9bba307.html:this is random
 
 all: test build
 test:
@@ -19,3 +19,6 @@ docker-build:
 	docker build -t $(DOCKER_USERNAME)/$(DOCKER_IMG_NAME):$(DOCKER_VERSION) .
 docker-run:
 	docker run -p 8080:8080 $(DOCKER_USERNAME)/$(BINARY_NAME):$(DOCKER_VERSION) env CUSTOM_ROUTES="$(CUSTOM_ROUTES)" ./app
+docker-push: docker-build
+	docker image tag $(DOCKER_USERNAME)/$(BINARY_NAME):$(DOCKER_VERSION) $(DOCKER_USERNAME)/$(BINARY_NAME):latest;
+	docker image push $(DOCKER_USERNAME)/$(BINARY_NAME):latest

go/hello-api/main.go

@@ -12,15 +12,21 @@ func main() {
 	e := echo.New()
 	customRoutes := getRoutes()
 
+	customRoot := false
 	for index := range customRoutes {
 		route := customRoutes[index]
+		if route.path == "/" || route.path == "" {
+			customRoot = true
+		}
 		e.GET(route.path, func(c echo.Context) error {
 			return c.String(http.StatusOK, route.message)
 		})
 	}
-	e.GET("/", func(c echo.Context) error {
-		return c.String(http.StatusOK, "Hello, World!")
-	})
+	if !customRoot {
+		e.GET("/", func(c echo.Context) error {
+			return c.String(http.StatusOK, "Hello, World!")
+		})
+	}
 	e.Logger.Fatal(e.Start(":8080"))
 }
 

k8s/jobs/ingress_nginx_relative_path/README.md

@@ -0,0 +1,74 @@
+# Service with ingress nginx
+
+1. Install ingress nginx controller
+
+[Install ingress](/k8s/setup/minikube/install_ingress.md)
+
+2. Verify installation
+
+```
+kubectl get pods --all-namespaces -l app.kubernetes.io/name=ingress-nginx
+```
+
+3. Apply k8s configuration
+
+note: assume you are at root of repository
+
+```
+kubectl apply -f ./
+```
+
+4. Check exposed ip of ingress
+
+notes: will take litle time to assign IP address
+
+```
+kubectl get ingress http-app-ingress
+```
+
+Output example:
+
+```
+Output: 
+
+NAME               HOSTS   ADDRESS          PORTS   AGE
+http-app-ingress   *       192.168.99.101   80      8m18s
+```
+
+```
+   Internet IP
+        |
+   [ Ingress ]
+   --|-----|--
+   [ Services ]
+```
+
+5. Try try try
+
+```
+curl -v 192.168.99.101:80/sub-path/
+```
+
+Output:
+```
+*   Trying 192.168.99.101...
+* TCP_NODELAY set
+* Connected to 192.168.99.101 (192.168.99.101) port 80 (#0)
+> GET /sub-path/ HTTP/1.1
+> Host: 192.168.99.101
+> User-Agent: curl/7.64.1
+> Accept: */*
+>
+< HTTP/1.1 200 OK
+< Server: openresty/1.15.8.2
+< Date: Thu, 23 Jan 2020 20:01:08 GMT
+< Content-Type: text/plain; charset=utf-8
+< Content-Length: 12
+< Connection: keep-alive
+< X-App-Name: http-echo
+< X-App-Version: 0.2.3
+<
+Hello world
+* Connection #0 to host 192.168.99.101 left intact
+* Closing connection 0
+```

k8s/jobs/ingress_nginx_relative_path/default.yaml

@@ -0,0 +1,42 @@
+--- 
+apiVersion: apps/v1
+kind: Deployment
+metadata: 
+  name: ingress-nginx-relative-path-app1
+spec: 
+  selector: 
+    matchLabels: 
+      app: ingress-nginx-relative-path-app1
+  template: 
+    metadata: 
+      labels: 
+        app: ingress-nginx-relative-path-app1
+    spec: 
+      containers: 
+        - 
+          env:
+          - name: CUSTOM_ROUTES
+            value: "/css/style.css:this is css;/random.8b3ec8ff2ac96774ff4e6965e9bba307.html:this is random;/:this is index file of app1"
+          image: "ledongthuc/hello-api:latest"
+          name: ingress-nginx-relative-path-app1
+--- 
+apiVersion: apps/v1
+kind: Deployment
+metadata: 
+  name: ingress-nginx-relative-path-app2
+spec: 
+  selector: 
+    matchLabels: 
+      app: ingress-nginx-relative-path-app2
+  template: 
+    metadata: 
+      labels: 
+        app: ingress-nginx-relative-path-app2
+    spec: 
+      containers: 
+        - 
+          env:
+          - name: CUSTOM_ROUTES
+            value: "/api/xyz:this is api;/this is index file of app2"
+          image: "ledongthuc/hello-api:latest"
+          name: ingress-nginx-relative-path-app2

k8s/jobs/ingress_nginx_relative_path/ingress.yaml

@@ -0,0 +1,38 @@
+--- 
+apiVersion: extensions/v1beta1
+kind: Ingress
+metadata:
+  name: ingress-nginx-relative-path-app1
+  annotations:
+    kubernetes.io/ingress.class: "nginx" # ingress will scan it
+spec:
+  rules:
+  - http:
+      paths:
+      - path: /css/
+        backend:
+          serviceName: ingress-nginx-relative-path-app1
+          servicePort: 8080
+      - path: /random*
+        backend:
+          serviceName: ingress-nginx-relative-path-app1
+          servicePort: 8080
+      - path: /
+        backend:
+          serviceName: ingress-nginx-relative-path-app1
+          servicePort: 8080
+--- 
+apiVersion: extensions/v1beta1
+kind: Ingress
+metadata:
+  name: ingress-nginx-relative-path-app2
+  annotations:
+    kubernetes.io/ingress.class: "nginx" # ingress will scan it
+spec:
+  rules:
+  - http:
+      paths:
+      - path: /api/
+        backend:
+          serviceName: ingress-nginx-relative-path-app2
+          servicePort: 8080

k8s/jobs/ingress_nginx_relative_path/service.yaml

@@ -0,0 +1,20 @@
+--- 
+apiVersion: v1
+kind: Service
+metadata: 
+  name: ingress-nginx-relative-path-app1
+spec: 
+  ports: 
+    - port: 8080
+  selector: 
+    app: ingress-nginx-relative-path-app1
+--- 
+apiVersion: v1
+kind: Service
+metadata: 
+  name: ingress-nginx-relative-path-app2
+spec: 
+  ports: 
+    - port: 8080
+  selector: 
+    app: ingress-nginx-relative-path-app2