From 2b1adef3bfaee103f67d5f4bf3df21bc57a098b3 Mon Sep 17 00:00:00 2001
From: strokh24 <Rokas.Stankunas@Student.Reutlingen-University.DE>
Date: Tue, 26 Nov 2024 12:19:43 +0100
Subject: [PATCH] feat: implement nginx load balancer
---
docker-compose.yml | 15 +++++++++++++--
nginx.conf | 38 ++++++++++++++++++++++++++++++++++++++
2 files changed, 51 insertions(+), 2 deletions(-)
create mode 100644 nginx.conf
diff --git a/docker-compose.yml b/docker-compose.yml
index a99e7f9..fc10e49 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,4 +1,3 @@
-version: '3.9'
services:
mongodb:
image: mongo:latest
@@ -33,4 +32,16 @@ services:
depends_on:
- mongodb
environment:
- - MONGO_URI=${MONGO_URI}
\ No newline at end of file
+ - MONGO_URI=${MONGO_URI}
+
+ nginx:
+ image: nginx:latest
+ container_name: nginx
+ ports:
+ - "80:80"
+ depends_on:
+ - todo-app-1
+ - todo-app-2
+ volumes:
+ - "./nginx.conf:/etc/nginx/nginx.conf:ro"
+ - "/var/log/nginx/access.log:/var/log/nginx/access.log"
diff --git a/nginx.conf b/nginx.conf
new file mode 100644
index 0000000..737504a
--- /dev/null
+++ b/nginx.conf
@@ -0,0 +1,38 @@
+events {
+ # Set the maximum number of simultaneous connections that can be opened by a worker process
+ worker_connections 1024;
+}
+
+http {
+ # Define an upstream group for load balancing the todo-app services
+ upstream todo-app {
+ ip_hash;
+ server todo-app-1:3000; # First server in the upstream group
+ server todo-app-2:3000; # Second server in the upstream group
+ }
+
+ # Define a custom log format for capturing upstream request details
+ log_format upstreamlog '[$time_local] $remote_addr - $remote_user - $request '
+ '"$status" $body_bytes_sent '
+ '"$http_referer" "$http_user_agent" '
+ '"$gzip_ratio" '
+ '${host} $request_uri '
+ '$upstream_addr ';
+
+ server {
+ listen 80; # Listen on port 80 for incoming HTTP requests
+ location / {
+ # Proxy requests to the upstream todo-app group
+ proxy_pass http://todo-app;
+ proxy_http_version 1.1; # Use HTTP/1.1 for proxying
+ proxy_set_header Upgrade $http_upgrade; # Set the Upgrade header
+ proxy_set_header Connection 'upgrade'; # Set the Connection header to upgrade
+ proxy_set_header Host $host; # Forward the original Host header
+ proxy_cache_bypass $http_upgrade; # Bypass cache for upgraded requests
+ # Log access requests using the defined upstream log format
+ access_log /var/log/nginx/access.log upstreamlog;
+ }
+ }
+}
+
+
--
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