docker 搭建spark集群

借鉴：https://blog.csdn.net/u013705066/article/details/80030732
下面这个例子让我感受到docker的便捷和强大。
两行命令搭建spark集群：

1.准备一个docker-compose.yml配置文件，描述集群结构及必要参数

version: "2"
services:
  master:
    image: singularities/spark
    command: start-spark master
    hostname: master
    ports:
      - "6066:6066"
      - "7070:7070"
      - "8080:8080"
      - "50070:50070"
  worker:
    image: singularities/spark
    command: start-spark worker master
    environment:
      SPARK_WORKER_CORES: 1
      SPARK_WORKER_MEMORY: 2g
    links:
      - master

2.执行命令拉取spark镜像到本地(该步骤可省略)：

docker pull singularities/spark

3.在配置文件所在目录启动

docker-compose up -d

4.查看启动结果

 浏览器访问：http:/{docker_host}:50070

附docker基本命令：

docker build -t friendlyhello .  # Create image using this directory's Dockerfile
docker run -p 4000:80 friendlyhello  # Run "friendlyhello" mapping port 4000 to 80
docker run -d -p 4000:80 friendlyhello         # Same thing, but in detached mode
docker container ls                                # List all running containers
docker container ls -a             # List all containers, even those not running
docker container stop <hash>           # Gracefully stop the specified container
docker container kill <hash>         # Force shutdown of the specified container
docker container rm <hash>        # Remove specified container from this machine
docker container rm $(docker container ls -a -q)         # Remove all containers
docker image ls -a                             # List all images on this machine
docker image rm <image id>            # Remove specified image from this machine
docker image rm $(docker image ls -a -q)   # Remove all images from this machine
docker login             # Log in this CLI session using your Docker credentials
docker tag <image> username/repository:tag  # Tag <image> for upload to registry
docker push username/repository:tag            # Upload tagged image to registry
docker run username/repository:tag                   # Run image from a registry

拷贝自官网.