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fix: Configure multi-node backend nodes for internal networking (no port conflicts)

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This commit is contained in:
Alexis Bruneteau 2025-11-07 02:42:07 +01:00
parent 5ac2a49a2a
commit f83bd796dd
2 changed files with 14 additions and 15 deletions
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5
e-voting-system/MULTINODE_SETUP.md
View File

@ -55,12 +55,11 @@ docker-compose -f docker-compose.multinode.yml ps
|-----------|-----|---------| |-----------|-----|---------|
| **Frontend** | http://localhost:3000 | Voting interface | | **Frontend** | http://localhost:3000 | Voting interface |
| **Load Balancer** | http://localhost:8000 | Routes to all backend nodes | | **Load Balancer** | http://localhost:8000 | Routes to all backend nodes |
| **Node 1 Direct** | http://localhost:8001 | Direct access to node 1 |
| **Node 2 Direct** | http://localhost:8002 | Direct access to node 2 |
| **Node 3 Direct** | http://localhost:8003 | Direct access to node 3 |
| **API Docs** | http://localhost:8000/docs | API documentation | | **API Docs** | http://localhost:8000/docs | API documentation |
| **Database UI** | http://localhost:8081 | Database management (Adminer) | | **Database UI** | http://localhost:8081 | Database management (Adminer) |
**Note**: Backend nodes are internal to the Docker network and only accessible through Nginx load balancer on port 8000. This is more efficient and prevents port conflicts.
## How It Works ## How It Works
### Load Balancing ### Load Balancing

24
e-voting-system/docker-compose.multinode.yml
View File

@ -29,7 +29,7 @@ services:
start_period: 40s start_period: 40s
# ================================================================ # ================================================================
# Backend Node 1 (Port 8001) # Backend Node 1 (Internal Port 8000, No external binding)
# ================================================================ # ================================================================
backend-node-1: backend-node-1:
build: build:
@ -47,9 +47,9 @@ services:
DEBUG: ${DEBUG:-false} DEBUG: ${DEBUG:-false}
PYTHONUNBUFFERED: 1 PYTHONUNBUFFERED: 1
NODE_ID: node1 NODE_ID: node1
NODE_PORT: 8001 NODE_PORT: 8000
ports: expose:
- "8001:8000" - "8000"
depends_on: depends_on:
mariadb: mariadb:
condition: service_healthy condition: service_healthy
@ -67,7 +67,7 @@ services:
start_period: 40s start_period: 40s
# ================================================================ # ================================================================
# Backend Node 2 (Port 8002) # Backend Node 2 (Internal Port 8000, No external binding)
# ================================================================ # ================================================================
backend-node-2: backend-node-2:
build: build:
@ -85,9 +85,9 @@ services:
DEBUG: ${DEBUG:-false} DEBUG: ${DEBUG:-false}
PYTHONUNBUFFERED: 1 PYTHONUNBUFFERED: 1
NODE_ID: node2 NODE_ID: node2
NODE_PORT: 8002 NODE_PORT: 8000
ports: expose:
- "8002:8000" - "8000"
depends_on: depends_on:
mariadb: mariadb:
condition: service_healthy condition: service_healthy
@ -105,7 +105,7 @@ services:
start_period: 40s start_period: 40s
# ================================================================ # ================================================================
# Backend Node 3 (Port 8003) # Backend Node 3 (Internal Port 8000, No external binding)
# ================================================================ # ================================================================
backend-node-3: backend-node-3:
build: build:
@ -123,9 +123,9 @@ services:
DEBUG: ${DEBUG:-false} DEBUG: ${DEBUG:-false}
PYTHONUNBUFFERED: 1 PYTHONUNBUFFERED: 1
NODE_ID: node3 NODE_ID: node3
NODE_PORT: 8003 NODE_PORT: 8000
ports: expose:
- "8003:8000" - "8000"
depends_on: depends_on:
mariadb: mariadb:
condition: service_healthy condition: service_healthy