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runtime-kubernetes's Introduction

Hadoop cluster on kubernetes

Example kubernetes definition for the flokkr docker images.

Attributes

Topic Solution
Configuration management
Source of config files: Kubernetes configuration object.
Configuration preprocessing: No.
Automatic restart on config change: No.
Provisioning and scheduling
Multihost support Yes.
Requirements on the hosts Full kubernetes cluster.
Definition of the containers per host Kubernetes resource definition.
Scheduling (find hosts with available resource) Yes. But because the kubernetes limitations, only Stateful Sets are used.
Failover on host crash Yes
Scale up/down: Yes, with kubernetes.
Multi tenancy (multiple cluster) Yes.
Network
Network between containers Kubernetes network.
DNS Yes, kubedns based.
Service discovery Based on dns.
Data locality N/A
Availability of the ports Ingress definition is needed.

Getting started

You need a kubernetes cluster. The easiest way is just using a provider (eg. GCE)

Configuration

Upload the predefined configuration with:

kubectl apply -f config.yaml

HDFS/YARN cluster

kubectl apply -f hdfs.yaml

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