/hadoop-cluster-docker

Run Hadoop Custer (version 3.3.6) within Docker Containers

Primary LanguageShellApache License 2.0Apache-2.0

Run Hadoop Cluster within Docker Containers

Based on kiwenlau's repo to build with hadoop 3.3.6

drawing

3 Nodes Hadoop Cluster

1. pull docker image (Not recommended)
docker pull danchoi2001/hadoop:1.0
2. clone github repository
git clone https://github.com/TianHuijun/hadoop-cluster-docker.git
3. create hadoop network
docker network create --driver=bridge hadoop
4. start container
cd hadoop-cluster-docker
bash ./start-container.sh

output:

start hadoop-master container...
start hadoop-slave1 container...
start hadoop-slave2 container...
root@hadoop-master:~#
  • start 3 containers with 1 master and 2 slaves
  • you will get into the /root directory of hadoop-master container
5. start hadoop
bash ./start-hadoop.sh
6. run wordcount
bash ./run-wordcount.sh

output

input file1.txt:
Hello Hadoop

input file2.txt:
Hello Docker

wordcount output:
Docker    1
Hadoop    1
Hello    2

Arbitrary size Hadoop cluster

1. pull docker images and clone github repository

do 1~3 like section A

2. rebuild docker image
bash ./resize-cluster.sh 5
  • specify parameter > 1: 2, 3..
  • this script just rebuild hadoop image with different slaves file, which pecifies the name of all slave nodes
3. start container
bash ./start-container.sh 5
  • use the same parameter as the step 2
4. run hadoop cluster

do 5~6 like section A

An easier installation, no need to manually set the number of nodes like above

bash ./start-container.sh <number_of_nodes>

Inspect

Run docker network inspect on the network (e.g. hadoop) to find the IP the hadoop interfaces are published on. Access these interfaces with the following URLs:

  • Namenode: http://<dockerhadoop_IP_address>:9870/dfshealth.html#tab-overview
  • Datanode: http://<dockerhadoop_IP_address>:9864/
  • Nodemanager: http://<dockerhadoop_IP_address>:8042/node
  • Resource manager: http://<dockerhadoop_IP_address>:8088/

Additional references: