feat: [#12] add healthcheck to mysql service

Author: josecelano

application/compose.yaml

@@ -63,7 +63,7 @@ services:
     networks:
       - backend_network
     ports:
-      - "9090:9090" # This port should not be exposed to the internet
+      - "9090:9090"  # This port should not be exposed to the internet
     volumes:
       - ./storage/prometheus/etc:/etc/prometheus:Z
     logging:
@@ -85,11 +85,18 @@ services:
     networks:
       - backend_network
     ports:
-      - "3306:3306" # Only for debugging, remove in production
+      - "3306:3306"  # Only for debugging, remove in production
     volumes:
       - mysql_data:/var/lib/mysql
       - ./storage/mysql/init:/docker-entrypoint-initdb.d:ro
-    command: --character-set-server=utf8mb4 --collation-server=utf8mb4_unicode_ci
+    command: >
+      --character-set-server=utf8mb4
+      --collation-server=utf8mb4_unicode_ci
+    healthcheck:
+      test: ["CMD", "mysqladmin", "ping", "-h", "localhost", "-p${MYSQL_PASSWORD}"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
     logging:
       options:
         max-size: "10m"

application/docs/deployment.md

@@ -5,7 +5,8 @@ This document outlines the deployment process for the Torrust Tracker demo appli
 ## 1. Prerequisites
 
 - Ensure you have SSH access to the production server.
-- The server should be provisioned and configured according to the [Production Setup Guide](./production-setup.md).
+- The server should be provisioned and configured according to the
+  [Production Setup Guide](./production-setup.md).
 
 ## 2. Deployment Steps
 

application/docs/firewall-requirements.md

@@ -109,8 +109,6 @@ The tracker uses four main ports, each serving a specific purpose:
     - `/api/v1/metrics` - Prometheus metrics
   - Used by Prometheus for monitoring and Grafana dashboards
 
-### Application Service Mapping
-
 ### Torrust Tracker
 
 - **UDP ports 6868, 6969**: BitTorrent announce endpoints

application/share/container/default/config/prometheus.yml

@@ -1,3 +1,4 @@
+---
 global:
   scrape_interval: 15s # How often to scrape metrics
 

project-words.txt

@@ -29,6 +29,7 @@ ethernets
 findtime
 fullchain
 genisoimage
+healthcheck
 hetznercloud
 INFOHASH
 initdb
@@ -45,6 +46,7 @@ maxretry
 misprocess
 mkisofs
 mktemp
+mysqladmin
 netdev
 newgrp
 newtrackon