docker为hadoop的云化带来了极大便利,安装和应用也会更快更方便.进入正题:
docker search hadoop
将会看到如下结果:
INDEX NAME DESCRIPTION STARS OFFICIAL AUTOMATED
docker.io docker.io/sequenceiq/hadoop-docker An easy way to try Hadoop [OK]
docker.io docker.io/sequenceiq/hadoop-ubuntu An easy way to try Hadoop on Ubuntu [OK]
docker.io docker.io/ruo91/hadoop Apache hadoop .x - Pseudo-Distributed Mode [OK]
docker.io docker.io/uhopper/hadoop Base Hadoop image with dynamic configurati... [OK]
docker.io docker.io/gelog/hadoop WORK IN PROGRESS. NOT PRODUCTION READY [OK]
docker.io docker.io/uhopper/hadoop-resourcemanager Hadoop resourcemanager [OK]
docker.io docker.io/dockmob/hadoop Docker images for Apache Hadoop (YARN, HDF... [OK]
docker.io docker.io/lewuathe/hadoop-master Multiple node hadoop cluster on Docker. [OK]
docker.io docker.io/uhopper/hadoop-datanode Hadoop datanode [OK]
docker.io docker.io/uhopper/hadoop-namenode Hadoop namenode [OK]
docker.io docker.io/uhopper/hadoop-nodemanager Hadoop nodemanager [OK]
docker.io docker.io/falkonry/hadoop Docker config for hadoop image [OK]
docker.io docker.io/ading1977/hadoop Docker image for multi-node hadoop cluster. [OK]
我们当然选择星最多的.选择第一个:
docker pull sequenceiq/hadoop-docker
然后等待下载.
下载完毕之后启动docker镜像:
docker run -it --name hadoop sequenceiq/hadoop-docker /etc/bootstrap.sh -bash
测试运行:
cd $HADOOP_PREFIX
# run the mapreduce
bin/hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-2.7..jar grep input output 'dfs[a-z.]+' # check the output
bin/hdfs dfs -cat output/*
我下载的时候最新的还是这个2.7版本.后来的小伙伴也不一定是2.7呦.可以进入share目录去看一下提供的测试jar包是什么版本然后运行,然后查看输出结果