Lab12 Final Draft (#78)

* lab12 initial docs
* lab12 rough draft
* update scubacat
* add Lab12
* fix nodeport
* fix typo
* formatting edits

Author: chrisakker

labs/lab11/readme.md

@@ -762,4 +762,4 @@ map $geoip2_data_country_iso_code $is_allowed {
 
 -------------
 
-Navigate to [LabGuide](../readme.md))
+Navigate to ([Lab12](../lab12/readme.md) | [LabGuide](../readme.md))

labs/lab12/aks1-nlk-upstreams.conf

@@ -0,0 +1,16 @@
+# Chris Akker, Shouvik Dutta, Adam Currier - Jan 2025
+# Nginx Upstream Block for NLK Controller
+#
+# Nginx 4 Azure - aks1-nlk-upstreams.conf
+#
+upstream aks1-nlk-upstreams {
+   zone aks1-nlk-upstreams 256K;             # required for metrics
+   state /tmp/aks1-nlk-upstreams.state;      # required for backup
+
+   least_time last_byte;                # choose the fastest NodePort
+
+   # Server List dynamically managed by NLK Controller
+
+   keepalive 16;
+
+}

labs/lab12/cafe.example.com.conf

@@ -0,0 +1,34 @@
+# Nginx 4 Azure - Cafe Nginx to AKS1 with NLK
+# Chris Akker, Shouvik Dutta, Adam Currier - Jan 2025
+#
+server {
+    
+    listen 80;      # Listening on port 80
+
+    server_name cafe.example.com;   # Set hostname to match in request
+    status_zone cafe.example.com;   # Metrics zone name
+
+    access_log  /var/log/nginx/cafe.example.com.log main;
+    error_log   /var/log/nginx/cafe.example.com_error.log info;
+
+    location / {
+        status_zone /;              # Metrics zone name
+        #
+        # return 200 "You have reached cafe.example.com, location /\n";
+         
+        proxy_pass http://aks1-nlk-upstreams;        # Proxy AND load balance to AKS2 Nginx Ingress
+        add_header X-Proxy-Pass aks1-nlk-upstreams;  # Custom Header
+        add_header X-Aks1-Upstream $upstream_addr;   # Which AKS1 NodeIP:Port
+        
+        # proxy_pass http://cafe_nginx;          # Proxy AND load balance to Docker VM
+        # add_header X-Proxy-Pass cafe_nginx;    # Custom Header
+
+        # proxy_pass http://aks1_ingress;        # Proxy AND load balance to AKS1 Nginx Ingress
+        # add_header X-Proxy-Pass aks1_ingress;  # Custom Header
+
+        # proxy_pass http://aks2_ingress;        # Proxy AND load balance to AKS2 Nginx Ingress
+        # add_header X-Proxy-Pass aks2_ingress;  # Custom Header
+
+    }
+    
+}