HADOOP DOCKER MAC OS X CODE

I decided to start master container in foreground mode therefore when we startup master container it will take you to the bash shell prompt after successful start-up. The master container starts the hdfs and yarn services for the whole cluster.Please refer to Apache Hadoop documentation for more details. Why to open multiple terminals when we donвЂ™t have to ? The fourth container ( alvinhenrick/hadoop-dn) contains only configuration to setup slave nodes and hasВ configurations for datanode and yarn processes.Д«oth master and slave containers also make use of unix utility daemon-tools to run sshd, serf and dnsmasq services in background and attach themselves to the lifecycle of docker container daemon.The only way to stop the services is to stop the container.I have only configured the slave containers this way because we can login to any slave containers anyways via ssh from master. The third container ( alvinhenrick/hadoop-nn-dn) as you might have guessed contains configuration for setting up the master container which has configurations for namenode, datanode and yarn processes. This container also setup SSH keys (password less access) required by hadoop to communicate between nodes for configuration etc. This container installs protoc for compilation and building the required packages. Hadoop communicate within its components via RPC call and uses Google protocol buffers for exchanging messages.

HADOOP DOCKER MAC OS X CODE

The hadoop source code is build from scratch. This container takes care of installing JAVA, SSH and HADOOP. The second container ( alvinhenrick/hadoop-base) is build from ( alvinhenrick/serf).

The only change I made was fork the repository and build the Ubuntu container instead of CentOS. Serf is efficient and lightweight gossip protocol to communicate with nodes and broadcast custom event and queries.You can read more about it here. A team at sequenceiq solved the problem via dnsmasq and serf. This container solves the problem of FQDN for all containers in cluster. By default /etc/hosts is readonly in docker containers. The first container (alvinhenrick/serf) is built from Ubuntu 13.10 (Saucy) the base image pulled from docker repository. The diagram above details the way I built the containers. Just like you use pom.xml for Maven, build.xml for Ant, adle for Gradle and the list is endless, similarly for docker containers we use Dockerfile.

I was struggling with creating and simulating multinode clusters on my laptop.The Virtual Machines are good but very heavy, require and consume lotвЂ™s of resources like CPU and RAM.Docker is light weight based on LXC i.e. Click here if you want to read more about it. This blog is about provisioning multinode Hadoop cluster with Docker.Docker is an open platform for developers and sysadmins to build, ship, and run distributed applications. So here you go I am writing my first blog, last but not the least I would like to say thanks to my friend Biju Kunjummen who convinced me to write this blog. My wife has been trying to convince me from a very long time that I should write the tech blog because she thinks itвЂ™s worth to share the details and knowledge I have gained over the period of time with the everyone. ItвЂ™s been a while since I have been planning to write a blog and share the knowledge.

Hadoop docker mac os x