keycloak-traefik-letsencrypt-docker-compose.yml

# Keycloak with Let's Encrypt Using Docker Compose

# The complete installation guide is available on my website https://www.heyvaldemar.com/install-keycloak-using-docker-compose/

# Change variables in the `.env` to meet your requirements.
# Note that the `.env` file should be in the same directory as `keycloak-traefik-letsencrypt-docker-compose.yml`.

# Create networks for your services before deploying the configuration using the commands:
# `docker network create traefik-network`
# `docker network create keycloak-network`

# Deploy Keycloak using Docker Compose:
# `docker compose -f keycloak-traefik-letsencrypt-docker-compose.yml -p keycloak up -d`

# Backups
# The `backups` container in the configuration is responsible for the following:
# 1. **Database Backup**: Creates compressed backups of the PostgreSQL database using pg_dump.
# Customizable backup path, filename pattern, and schedule through variables like `POSTGRES_BACKUPS_PATH`, `POSTGRES_BACKUP_NAME`, and `BACKUP_INTERVAL`.
# 2. **Backup Pruning**: Periodically removes backups exceeding a specified age to manage storage.
# Customizable pruning schedule and age threshold with `POSTGRES_BACKUP_PRUNE_DAYS` and `DATA_BACKUP_PRUNE_DAYS`.
# By utilizing this container, consistent and automated backups of the essential components of your instance are ensured.
# Moreover, efficient management of backup storage and tailored backup routines can be achieved through easy and flexible configuration using environment variables.

# # keycloak-restore-database.sh Description
# This script facilitates the restoration of a database backup:
# 1. **Identify Containers**: It first identifies the service and backups containers by name, finding the appropriate container IDs.
# 2. **List Backups**: Displays all available database backups located at the specified backup path.
# 3. **Select Backup**: Prompts the user to copy and paste the desired backup name from the list to restore the database.
# 4. **Stop Service**: Temporarily stops the service to ensure data consistency during restoration.
# 5. **Restore Database**: Executes a sequence of commands to drop the current database, create a new one, and restore it from the selected compressed backup file.
# 6. **Start Service**: Restarts the service after the restoration is completed.
# To make the `keycloak-restore-database.shh` script executable, run the following command:
# `chmod +x keycloak-restore-database.sh`
# Usage of this script ensures a controlled and guided process to restore the database from an existing backup.

# Author
# I’m Vladimir Mikhalev, the Docker Captain, but my friends can call me Valdemar.
# https://www.docker.com/captains/vladimir-mikhalev/

# My website with detailed IT guides: https://www.heyvaldemar.com/
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networks:
  keycloak-network:
    external: true
  traefik-network:
    external: true

volumes:
  keycloak-postgres:
  keycloak-postgres-backup:
  keycloak-database-backups:
  traefik-certificates:

services:
  postgres:
    image: ${KEYCLOAK_POSTGRES_IMAGE_TAG}
    volumes:
      - keycloak-postgres:/var/lib/postgresql/data
    environment:
      POSTGRES_DB: ${KEYCLOAK_DB_NAME}
      POSTGRES_USER: ${KEYCLOAK_DB_USER}
      POSTGRES_PASSWORD: ${KEYCLOAK_DB_PASSWORD}
    networks:
      - keycloak-network
    healthcheck:
      test: [ "CMD", "pg_isready", "-q", "-d", "${KEYCLOAK_DB_NAME}", "-U", "${KEYCLOAK_DB_USER}" ]
      interval: 10s
      timeout: 5s
      retries: 3
      start_period: 60s
    restart: unless-stopped

  keycloak:
    image: ${KEYCLOAK_IMAGE_TAG}
    command: start
    environment:
      KC_DB: postgres
      KC_DB_URL_HOST: postgres
      KC_DB_URL_DATABASE: ${KEYCLOAK_DB_NAME}
      KC_DB_USERNAME: ${KEYCLOAK_DB_USER}
      KC_DB_PASSWORD: ${KEYCLOAK_DB_PASSWORD}
      KC_DB_SCHEMA: public
      KEYCLOAK_ADMIN: ${KEYCLOAK_ADMIN_USERNAME}
      KEYCLOAK_ADMIN_PASSWORD: ${KEYCLOAK_ADMIN_PASSWORD}
      KC_HEALTH_ENABLED: 'true'
      KC_HOSTNAME: ${KEYCLOAK_HOSTNAME}
      KC_HTTP_ENABLED: 'true'
      KC_PROXY_HEADERS: 'xforwarded'
      PROXY_ADDRESS_FORWARDING: 'true'
    networks:
      - keycloak-network
      - traefik-network
    healthcheck:
      test: 
      - "CMD-SHELL"
      - |
        exec 3<>/dev/tcp/localhost/9000 &&
        echo -e 'GET /health/ready HTTP/1.1\r\nHost: localhost\r\nConnection: close\r\n\r\n' >&3 &&
        cat <&3 | tee /tmp/healthcheck.log | grep -q '200 OK'
      interval: 10s
      timeout: 5s
      retries: 3
      start_period: 90s
    labels:
      - "traefik.enable=true"
      - "traefik.http.routers.keycloak.rule=Host(`${KEYCLOAK_HOSTNAME}`)"
      - "traefik.http.routers.keycloak.service=keycloak"
      - "traefik.http.routers.keycloak.entrypoints=websecure"
      - "traefik.http.services.keycloak.loadbalancer.server.port=8080"
      - "traefik.http.routers.keycloak.tls=true"
      - "traefik.http.routers.keycloak.tls.certresolver=letsencrypt"
      - "traefik.http.services.keycloak.loadbalancer.passhostheader=true"
      - "traefik.http.routers.keycloak.middlewares=compresstraefik"
      - "traefik.http.middlewares.compresstraefik.compress=true"
      - "traefik.docker.network=traefik-network"
    restart: unless-stopped
    depends_on:
      postgres:
        condition: service_healthy

  traefik:
    image: ${TRAEFIK_IMAGE_TAG}
    command:
      - "--log.level=${TRAEFIK_LOG_LEVEL}"
      - "--accesslog=true"
      - "--api.dashboard=true"
      - "--api.insecure=true"
      - "--ping=true"
      - "--ping.entrypoint=ping"
      - "--entryPoints.ping.address=:8082"
      - "--entryPoints.web.address=:80"
      - "--entryPoints.websecure.address=:443"
      - "--providers.docker=true"
      - "--providers.docker.endpoint=unix:///var/run/docker.sock"
      - "--providers.docker.exposedByDefault=false"
      - "--certificatesresolvers.letsencrypt.acme.tlschallenge=true"
      - "--certificatesresolvers.letsencrypt.acme.email=${TRAEFIK_ACME_EMAIL}"
      - "--certificatesresolvers.letsencrypt.acme.storage=/etc/traefik/acme/acme.json"
      - "--metrics.prometheus=true"
      - "--metrics.prometheus.buckets=0.1,0.3,1.2,5.0"
      - "--global.checkNewVersion=true"
      - "--global.sendAnonymousUsage=false"
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
      - traefik-certificates:/etc/traefik/acme
    networks:
      - traefik-network
    ports:
      - "80:80"
      - "443:443"
    healthcheck:
      test: ["CMD", "wget", "http://localhost:8082/ping","--spider"]
      interval: 10s
      timeout: 5s
      retries: 3
      start_period: 5s
    labels:
      - "traefik.enable=true"
      - "traefik.http.routers.dashboard.rule=Host(`${TRAEFIK_HOSTNAME}`)"
      - "traefik.http.routers.dashboard.service=api@internal"
      - "traefik.http.routers.dashboard.entrypoints=websecure"
      - "traefik.http.services.dashboard.loadbalancer.server.port=8080"
      - "traefik.http.routers.dashboard.tls=true"
      - "traefik.http.routers.dashboard.tls.certresolver=letsencrypt"
      - "traefik.http.services.dashboard.loadbalancer.passhostheader=true"
      - "traefik.http.routers.dashboard.middlewares=authtraefik"
      - "traefik.http.middlewares.authtraefik.basicauth.users=${TRAEFIK_BASIC_AUTH}"
      - "traefik.http.routers.http-catchall.rule=HostRegexp(`{host:.+}`)"
      - "traefik.http.routers.http-catchall.entrypoints=web"
      - "traefik.http.routers.http-catchall.middlewares=redirect-to-https"
      - "traefik.http.middlewares.redirect-to-https.redirectscheme.scheme=https"
    restart: unless-stopped

  backups:
    image: ${KEYCLOAK_POSTGRES_IMAGE_TAG}
    command: >-
      sh -c 'sleep $KEYCLOAK_BACKUP_INIT_SLEEP &&
      while true; do
        pg_dump -h postgres -p 5432 -d $KEYCLOAK_DB_NAME -U $KEYCLOAK_DB_USER | gzip > $KEYCLOAK_POSTGRES_BACKUPS_PATH/$KEYCLOAK_POSTGRES_BACKUP_NAME-$(date "+%Y-%m-%d_%H-%M").gz &&
        find $KEYCLOAK_POSTGRES_BACKUPS_PATH -type f -mtime +$KEYCLOAK_POSTGRES_BACKUP_PRUNE_DAYS | xargs rm -f &&
        sleep $KEYCLOAK_BACKUP_INTERVAL; done'
    volumes:
      - keycloak-postgres-backup:/var/lib/postgresql/data
      - keycloak-database-backups:${KEYCLOAK_POSTGRES_BACKUPS_PATH}
    environment:
      KEYCLOAK_DB_NAME: ${KEYCLOAK_DB_NAME}
      KEYCLOAK_DB_USER: ${KEYCLOAK_DB_USER}
      PGPASSWORD: ${KEYCLOAK_DB_PASSWORD}
      KEYCLOAK_BACKUP_INIT_SLEEP: ${KEYCLOAK_BACKUP_INIT_SLEEP}
      KEYCLOAK_BACKUP_INTERVAL: ${KEYCLOAK_BACKUP_INTERVAL}
      KEYCLOAK_POSTGRES_BACKUP_PRUNE_DAYS: ${KEYCLOAK_POSTGRES_BACKUP_PRUNE_DAYS}
      KEYCLOAK_POSTGRES_BACKUPS_PATH: ${KEYCLOAK_POSTGRES_BACKUPS_PATH}
      KEYCLOAK_POSTGRES_BACKUP_NAME: ${KEYCLOAK_POSTGRES_BACKUP_NAME}
    networks:
      - keycloak-network
    restart: unless-stopped
    depends_on:
      postgres:
        condition: service_healthy