docker-compose.yml

services:
  flask_app:
    build:
      context: .
    ports:
      - "8080:8080"
    depends_on:
      elasticsearch:
        condition: service_healthy
      mariadb:
        condition: service_healthy
    environment:
      - DATABASE_URL=mariadb+mariadbconnector://root:${MARIA_DB_PW}@mariadb:3306/fyp
      - SECRET_KEY=${FLASK_SECRET_KEY}
      - ES_USER=elastic
      - ES_PASSWORD=${ELASTIC_PASSWORD}
      - FLASK_APP=main.py
    networks:
      - elastic

  elasticsearch:
    image: docker.elastic.co/elasticsearch/elasticsearch:8.13.3
    volumes:
      - certs:/usr/share/elasticsearch/config/certs
    user: "0"
    command: >
      bash -c '
        if [ x${ELASTIC_PASSWORD} == x ]; then
          echo "Set the ELASTIC_PASSWORD environment variable in the .env file";
          exit 1;
        fi;
        if [ ! -f config/certs/ca.zip ]; then
          echo "Creating CA";
          bin/elasticsearch-certutil ca --silent --pem -out config/certs/ca.zip;
          unzip config/certs/ca.zip -d config/certs;
        fi;
        if [ ! -f config/certs/certs.zip ]; then
          echo "Creating certs";
          echo -ne \
          "instances:\n"\
          "  - name: es01\n"\
          "    dns:\n"\
          "      - es01\n"\
          "      - localhost\n"\
          "    ip:\n"\
          "      - 127.0.0.1\n"\
          > config/certs/instances.yml;
          bin/elasticsearch-certutil cert --silent --pem -out config/certs/certs.zip --in config/certs/instances.yml --ca-cert config/certs/ca/ca.crt --ca-key config/certs/ca/ca.key;
          unzip config/certs/certs.zip -d config/certs;
        fi;
        echo "Setting file permissions"
        chown -R root:root config/certs;
        find . -type d -exec chmod 750 \{\} \;;
        find . -type f -exec chmod 640 \{\} \;;
        echo "Waiting for Elasticsearch availability";
        until curl -s --cacert config/certs/ca/ca.crt https://es01:9200 | grep -q "missing authentication credentials"; do sleep 30; done;
        echo "All done!";
      '
    networks:
      - elastic
    hostname: es01
    healthcheck:
      test: [ "CMD-SHELL", "[ -f config/certs/es01/es01.crt ]" ]
      interval: 10s
      timeout: 5s
      retries: 120

  es01:
    depends_on:
      elasticsearch:
        condition: service_healthy
    image: docker.elastic.co/elasticsearch/elasticsearch:8.13.3
    volumes:
      - certs:/usr/share/elasticsearch/config/certs
      - esdata01:/usr/share/elasticsearch/data
    ports:
      - ${ES_PORT}:9200
    environment:
      - node.name=es01
      - cluster.name=${CLUSTER_NAME}
      - cluster.initial_master_nodes=es01
      - ELASTIC_PASSWORD=${ELASTIC_PASSWORD}
      - bootstrap.memory_lock=true
      - xpack.security.enabled=true
      - xpack.security.http.ssl.enabled=true
      - xpack.security.http.ssl.key=certs/es01/es01.key
      - xpack.security.http.ssl.certificate=certs/es01/es01.crt
      - xpack.security.http.ssl.certificate_authorities=certs/ca/ca.crt
      - xpack.security.transport.ssl.enabled=true
      - xpack.security.transport.ssl.key=certs/es01/es01.key
      - xpack.security.transport.ssl.certificate=certs/es01/es01.crt
      - xpack.security.transport.ssl.certificate_authorities=certs/ca/ca.crt
      - xpack.security.transport.ssl.verification_mode=certificate
      - xpack.license.self_generated.type=${LICENSE}
    mem_limit: 1073741824
    ulimits:
      memlock:
        soft: -1
        hard: -1
    networks:
      - elastic
    healthcheck:
      test:
        [
          "CMD-SHELL",
          "curl -s --cacert config/certs/ca/ca.crt https://elasticsearch:9200 | grep -q 'missing authentication credentials'",
        ]
      interval: 10s
      timeout: 10s
      retries: 120

  mariadb:
    image: mariadb:latest
    environment:
      MARIADB_ROOT_PASSWORD: ${MARIA_DB_PW}
      MARIADB_DATABASE: fyp
      MARIADB_USER: viktor
      MARIADB_PASSWORD: ${MARIA_DB_PW}
    ports:
      - "3306:3306"
    volumes:
      - db-data:/foo
    networks:
      - elastic
    command: --max_allowed_packet=256M
    healthcheck:
      interval: 30s
      retries: 3
      test:
        [
          "CMD",
          "healthcheck.sh",
          "--su-mysql",
          "--connect",
          "--innodb_initialized"
        ]
      timeout: 30s  # Number of retries before considering the service unhealthy
volumes:
  db-data:
  certs:
    driver: local
  esdata01:
    driver: local
networks:
  elastic:
    driver: bridge