Docker

Comandos_Docker.md

Docker

Imagenes

Contenedores

Mostrar los contenedores corriendo

docker ps

Acceder de forma interactiva al contenedor my_express_rest_api por medio de bash

docker exec -it my_express_rest_api bash

Listar las variables de entorno

env

Comprobar conexión entre el contenedor actual y el contenedor my_mysql_db

ping my_mysql_db

Salir de la manera interactiva

exit

Acceder al modo interactivo del contenedor de la base de datos

docker exec -it -u root my_mysql_db bash

Red

Docker compose

Levantar el docker compose

docker-compose up --build code .

docker-compose.yml

version: '3.8'

services:
  express_res_api:
    container_name: my_express_res_api
    build: ./app/
    environment:
      - DB_PORT=3306
      - DB_HOST=mysql_db
    ports:
      - "3000:3000"
    depends_on:
      - mysql_db
    networks:
      - docker_tuto_net
    deploy:
      resources:
        # Limita la memoria para mejorar el rendimiento de los servidores
        limits:
          memory: 1G
  mysql_db:
    container_name: my_mysql_db
    image: mysql:latest
    # Important command to allow legacy authentications for old versions
    command: --default-authentication-plugin=mysql_native_password
    restart: always
    environment:
      MYSQL_PASSWORD: root
      MYSQL_ROOT_PASSWORD: root
      MYSQL_DATABASE: employees
    expose:
      - "3306"
    ports:
      - "3306:3306"
    # /docker-entrypoint-initdb.d mapea a ./db del proyecto para ejecutar .sql, .sh
    volumes:
      - docker_tuto_mysql_db_volume:/var/lib/mysql
      - ./db:/docker-entrypoint-initdb.d
    networks:
      - docker_tuto_net
    deploy:
      resources:
        limits:
          memory: 1G
volumes:
  docker_tuto_mysql_db_volume:
    name: "docker_tuto_mysql_db_volume"

networks:
  docker_tuto_net:
    driver: bridge
    name: docker_tuto_net

docker-compose_jenkins.yml

version: '3.8'

services:
  myjenkins:
    container_name: my_custom_jenkins
    image: jenkins/jenkins:lts
    user: root
    environment:
      MY_NAME: "santi_develops"
      # Gmail extra configuration for mailer plugin
      JAVA_OPTS: "-Djava.awt.handless=true -Dmail.smtp.starttls.enable=true"
      SONARQUBE_HOST: mysonarqube
    ports:
      - "8080:8080"
      - "50000:50000"
    volumes:
      # Named Docker volume details at the bottom
      - jenkins_home: /var/jenkins_home
      # Warning
      - /var/run/docker.stock:/var/run/docker.stock
    networks:
      - net_devops
    deploy:
      resources:
        limits:
          cpus: "2"
          memory: 2G
  mysonarqube:
    container_name: my_custon_sonarqube
    # build: ./sonarqube_home
    image: sonarqube:7.9.5-community
    environment:
      SONAR_ES_BOOTSTRAP_CHECKS_DISABLE: "true"
    ports:
      - "9000:9000"
    networks:
      - net_devops
    volumes:
      - ./sonarqube_home/conf/:/opt/sonarqube/conf
      - ./sonarqube_home/data/:/opt/sonarqube/data
      - ./sonarqube_home/logs/:/opt/sonarqube/logs
      - ./sonarqube_home/extensions/:/opt/sonarqube/extensions
    restart: unless-stopped
    deploy:
      resources:
        limits:
          cpus: "2"
          memory: 3G

# To use docker-volume (custom_jenkins_home) instead of a directory path-file
volumes:
  jenkins_home:
    name: "custom_jenkins_home"

networks:
  net_devops:
    driver: bridge
    name: net_devops

Dockerfile

# Dockerfile for express & mysql app
FROM node

# Defines default ports and host for app and db
ARG app_port=3000
ARG db_host=mysql_db
ARG db_port=3306

# Add important environment variables that the server consumes
ENV APP_PORT=${app_port}
ENV DB_HOST=${db_host}}
ENV DB_PORT=${db_port}}

# Add dependencies for the node modules (to be installed)
COPY ["package.json", "package-lock.json", "/usr/src/"]

# Specific working directory for the container
WORKDIR /usr/src

# Install node dependencies via npm
RUN npm install

# Add main app functionalities
COPY ["app.js", "/usr/src/"]
COPY ["./config/db.config.js", "/usr/src/config/"]
COPY ["./db/model.js", "/usr/src/db/"]
COPY ["./routes/developers.js", "/usr/src/routes/"]

EXPOSE ${app_port}

CMD ["node", "app.js"]