Apache Druid

Apache Druid (incubating) is a high performance analytics data store for event-driven data.

Install Chart

To install the Druid Chart into your Kubernetes cluster :

helm install --namespace "druid" --name "druid" incubator/druid

After installation succeeds, you can get a status of Chart

helm status "druid"

If you want to delete your Chart, use this command:

helm delete  --purge "druid"

Helm ingresses

The Chart provides ingress configuration to allow customization the installation by adapting the values.yaml depending on your setup. Please read the comments in the values.yaml file for more details on how to configure your reverse proxy or load balancer.

Chart Prefix

This Helm automatically prefixes all names using the release name to avoid collisions.

URL prefix

This chart exposes 5 endpoints:

• Druid Overlord
• Druid Broker
• Druid Coordinator
• Druid Historical
• Druid Middle Manager

Druid configuration

Druid configuration can be changed by using environment variables from Docker image.

See the Druid Docker entry point for more informations

Middle Manager and Historical Statefulset

Middle Managers and Historicals uses StatefulSet. Persistence is enabled by default.

Helm chart Configuration

The following table lists the configurable parameters of the Druid chart and their default values.

Parameter	Description	Default
image.repository	Container image name	maver1ckpl/druid-docker
image.tag	Container image tag	0.12.3-1
image.pullPolicy	Container pull policy	IfNotPresent
env	Custom env variables for all components	``
historical.name	historical component name	historical
historical.replicaCount	historical node replicas (deployment)	1
historical.port	port of historical component	8083
historical.serviceType	service type for service	ClusterIP
historical.resources	historical node resources requests & limits	{}
historical.podAnnotations	historical Deployment annotations	{}
historical.nodeSelector	Node labels for historical pod assignment	{}
historical.tolerations	historical tolerations	[]
historical.javaOpts	historical node java options	-Xms2G -Xmx2G -XX:MaxDirectMemorySize=8g
historical.persistence.enabled	historical persistent enabled/disabled	true
historical.persistence.size	historical persistent volume size	4Gi
historical.persistence.storageClass	historical persistent volume Class	nil
historical.persistence.accessMode	historical persistent Access Mode	ReadWriteOnce
historical.antiAffinity	historical anti-affinity policy	soft
historical.nodeAffinity	historical node affinity policy	{}
historical.ingress.enabled	enable ingress	false
historical.ingress.hosts	hosts for the historical api	[ "chart-example.local" ]
historical.ingress.path	path of the historical api	/
historical.ingress.annotations	annotations for the historical api ingress	{}
historical.ingress.tls	TLS configuration for the ingress	[]
middleManager.name	middleManager component name	middleManager
middleManager.replicaCount	middleManager node replicas (deployment)	1
middleManager.port	port of middleManager component	8091
middleManager.serviceType	service type for service	ClusterIP
middleManager.resources	middleManager node resources requests & limits	{}
middleManager.podAnnotations	middleManager Deployment annotations	{}
middleManager.nodeSelector	Node labels for middleManager pod assignment	{}
middleManager.tolerations	middleManager tolerations	[]
middleManager.javaOpts	middleManager node java options	-Xms1G -Xmx1G"
middleManager.persistence.enabled	middleManager persistent enabled/disabled	true
middleManager.persistence.size	middleManager persistent volume size	4Gi
middleManager.persistence.storageClass	middleManager persistent volume Class	nil
middleManager.persistence.accessMode	middleManager persistent Access Mode	ReadWriteOnce
middleManager.antiAffinity	middleManager anti-affinity policy	soft
middleManager.nodeAffinity	middleManager node affinity policy	{}
middleManager.ingress.enabled	enable ingress	false
middleManager.ingress.hosts	hosts for the middleManager api	[ "chart-example.local" ]
middleManager.ingress.path	path of the middleManager api	/
middleManager.ingress.annotations	annotations for the middleManager api ingress	{}
middleManager.ingress.tls	TLS configuration for the ingress	[]
broker.name	broker component name	broker
broker.replicaCount	broker node replicas (deployment)	1
broker.port	port of broker component	8082
broker.serviceType	service type for service	ClusterIP
broker.resources	broker node resources requests & limits	{}
broker.podAnnotations	broker Deployment annotations	{}
broker.nodeSelector	Node labels for broker pod assignment	{}
broker.tolerations	broker tolerations	[]
broker.javaOpts	broker node java options	-Xms2G -Xmx2G -XX:MaxDirectMemorySize=8g
broker.nodeAffinity	broker node affinity policy	{}
broker.ingress.enabled	enable ingress	false
broker.ingress.hosts	hosts for the broker api	[ "chart-example.local" ]
broker.ingress.path	path of the broker api	/
broker.ingress.annotations	annotations for the broker api ingress	{}
broker.ingress.tls	TLS configuration for the ingress	[]
overlord.name	overlord component name	overlord
overlord.replicaCount	overlord node replicas (deployment)	1
overlord.port	port of overlord component	8090
overlord.serviceType	service type for service	ClusterIP
overlord.resources	overlord node resources requests & limits	{}
overlord.podAnnotations	overlord Deployment annotations	{}
overlord.nodeSelector	Node labels for overlord pod assignment	{}
overlord.tolerations	overlord tolerations	[]
overlord.javaOpts	overlord node java options	--Xms1G -Xmx1G
overlord.nodeAffinity	overlord node affinity policy	{}
overlord.ingress.enabled	enable ingress	false
overlord.ingress.hosts	hosts for the overlord api	[ "chart-example.local" ]
overlord.ingress.path	path of the overlord api	/
overlord.ingress.annotations	annotations for the overlord api ingress	{}
overlord.ingress.tls	TLS configuration for the ingress	[]
coordinator.name	coordinator component name	coordinator
coordinator.replicaCount	coordinator node replicas (deployment)	1
coordinator.port	port of coordinator component	8081
coordinator.serviceType	service type for service	ClusterIP
coordinator.resources	coordinator node resources requests & limits	{}
coordinator.podAnnotations	coordinator Deployment annotations	{}
coordinator.nodeSelector	Node labels for coordinator pod assignment	{}
coordinator.tolerations	coordinator tolerations	[]
coordinator.javaOpts	coordinator node java options	--Xms1G -Xmx1G
coordinator.nodeAffinity	coordinator node affinity policy	{}
coordinator.ingress.enabled	enable ingress	false
coordinator.ingress.hosts	hosts for the coordinator api	[ "chart-example.local" ]
coordinator.ingress.path	path of the coordinator api	/
coordinator.ingress.annotations	annotations for the coordinator api ingress	{}
coordinator.ingress.tls	TLS configuration for the ingress	[]

Full and up-to-date documentation can be found in the comments of the values.yaml file.