From 247c097fe02827ceaf96031ecf661230581fcc56 Mon Sep 17 00:00:00 2001
From: bilalcaliskan <bilalcaliskan@protonmail.com>
Date: Tue, 7 Dec 2021 22:15:03 +0300
Subject: [PATCH] add sample nginx deployment file

---
 README.md                                | 12 ++++++++++++
 deployment/varnish/default.vcl           | 10 +++++-----
 deployment/varnish/deployment.yaml       | 10 +++++-----
 deployment/varnish/kustomization.yaml    |  2 ++
 deployment/varnish/nginx_deployment.yaml | 24 ++++++++++++++++++++++++
 deployment/varnish/service.yaml          |  5 +++--
 6 files changed, 51 insertions(+), 12 deletions(-)
 create mode 100644 deployment/varnish/nginx_deployment.yaml

diff --git a/README.md b/README.md
index c858664..b120b98 100644
--- a/README.md
+++ b/README.md
@@ -51,6 +51,18 @@ directory:
 $ kustomize build . | kubectl apply -f -
 ```
 
+[deployment/varnish](deployment/varnish) directory will help you to spin up an in-cluster cache solution quickly. It will also deploy a sample
+Nginx with 2 replicas. When you make a GET request to the varnish instance with proper header, you will get following response. Notice **X-Cache**
+and **X-Cache-Hits** response headers. This indicates that our requests are successfully hitting the varnish:
+```shell
+$ curl ${WORKER_NODE_IP}:${VARNISH_NODE_PORT} -H "Host: nginx.default.svc" -v
+... omitted
+Age: 22
+X-Cache: HIT
+X-Cache-Hits: 12
+... omitted
+```
+
 ### Standalone
 You can use binary method to manage standalone Varnish instances, not in Kubernetes. Binary can
 be downloaded from [Releases](https://github.com/bilalcaliskan/nginx-conf-generator/releases) page.
diff --git a/deployment/varnish/default.vcl b/deployment/varnish/default.vcl
index f7258a8..999f795 100644
--- a/deployment/varnish/default.vcl
+++ b/deployment/varnish/default.vcl
@@ -3,8 +3,8 @@ vcl 4.1;
 import directors;
 import std;
 
-backend default {
-    .host = "varnish-cache:80";
+backend nginx {
+    .host = "nginx.default.svc:80";
 }
 
 sub vcl_init {
@@ -12,7 +12,7 @@ sub vcl_init {
     # Typically used to initialize VMODs.
 
     new vdir = directors.round_robin();
-    vdir.add_backend(default);
+    vdir.add_backend(nginx);
 }
 
 sub vcl_pipe {
@@ -224,8 +224,8 @@ sub vcl_recv {
 
 
     # Backend declaration
-    if (req.http.host == "varnish-cache") {
-        set req.backend_hint = default;
+    if (req.http.host == "nginx.default.svc") {
+        set req.backend_hint = nginx;
         if (! req.url ~ "/") {
             return(pass);
         }
diff --git a/deployment/varnish/deployment.yaml b/deployment/varnish/deployment.yaml
index a5fae65..04acaa7 100644
--- a/deployment/varnish/deployment.yaml
+++ b/deployment/varnish/deployment.yaml
@@ -3,21 +3,21 @@
 apiVersion: apps/v1
 kind: Deployment
 metadata:
-  name: varnish-cache
+  name: varnish
   namespace: default
 spec:
   replicas: 2
   selector:
     matchLabels:
-      app: varnish-cache
+      app: varnish
   template:
     metadata:
-      name: varnish-cache
+      name: varnish
       labels:
-        app: varnish-cache
+        app: varnish
     spec:
       containers:
-        - name: varnish-cache
+        - name: varnish
           image: varnish:7.0.1
           imagePullPolicy: IfNotPresent
           env:
diff --git a/deployment/varnish/kustomization.yaml b/deployment/varnish/kustomization.yaml
index c06bf91..6b1ba06 100644
--- a/deployment/varnish/kustomization.yaml
+++ b/deployment/varnish/kustomization.yaml
@@ -6,6 +6,8 @@ kind: Kustomization
 resources:
   - deployment.yaml
   - service.yaml
+  - nginx_deployment.yaml
+  - nginx_service.yaml
 
 configMapGenerator:
   - name: varnish-config
diff --git a/deployment/varnish/nginx_deployment.yaml b/deployment/varnish/nginx_deployment.yaml
new file mode 100644
index 0000000..c4e97a3
--- /dev/null
+++ b/deployment/varnish/nginx_deployment.yaml
@@ -0,0 +1,24 @@
+---
+
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx
+  namespace: default
+  labels:
+    app: nginx
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app: nginx
+  template:
+    metadata:
+      labels:
+        app: nginx
+    spec:
+      containers:
+        - name: nginx
+          image: nginx:1.14.2
+          ports:
+            - containerPort: 80
diff --git a/deployment/varnish/service.yaml b/deployment/varnish/service.yaml
index b2d8c52..199178f 100644
--- a/deployment/varnish/service.yaml
+++ b/deployment/varnish/service.yaml
@@ -3,7 +3,7 @@
 apiVersion: v1
 kind: Service
 metadata:
-  name: varnish-cache
+  name: varnish
   namespace: default
 spec:
   ports:
@@ -11,4 +11,5 @@ spec:
       port: 80
       targetPort: 80
   selector:
-    app: varnish-cache
+    app: varnish
+  type: NodePort