README.md

Elasticsearch

A Helm chart for Elasticsearch on Kubernetes

TL;DR

$ helm repo add groundhog2k https://groundhog2k.github.io/helm-charts/
$ helm install my-release groundhog2k/elasticsearch

Introduction

This chart uses the original Elasticsearch image from Docker Hub to deploy a stateful Elasticsearch instance in a Kubernetes cluster.

It fully supports deployment of the multi-architecture docker image.

Limitations

The actual chart version only supports a single-node Elasticsearch cluster (replicaset = 1). Future upgrades will allow to span a multi-node cluster.

Prerequisites

• Kubernetes 1.12+
• Helm 3.x
• PV provisioner support in the underlying infrastructure

Installing the Chart

To install the chart with the release name my-release:

$ helm install my-release groundhog2k/elasticsearch

Uninstalling the Chart

To uninstall/delete the my-release deployment:

$ helm uninstall my-release

Common parameters

Key	Type	Default	Description
fullnameOverride	string	""	Fully override the deployment name
nameOverride	string	""	Partially override the deployment name

Deployment parameters

Key	Type	Default	Description
image.pullPolicy	string	"IfNotPresent"	Image pull policy
image.repository	string	"elasticsearch"	Image name
image.tag	string	""	Image tag
imagePullSecrets	list	[]	Image pull secrets
livenessProbe	object	see values.yaml	Liveness probe configuration
readinessProbe	object	see values.yaml	Readiness probe configuration
customLivenessProbe	object	{}	Custom liveness probe (overwrites default liveness probe configuration)
customReadinessProbe	object	{}	Custom readiness probe (overwrites default readiness probe configuration)
resources	object	{}	Resource limits and requests
nodeSelector	object	{}	Deployment node selector
podAnnotations	object	{}	Additional pod annotations
podSecurityContext	object	see values.yaml	Pod security context
securityContext	object	see values.yaml	Container security context
env	list	[]	Additional container environmment variables
args	list	[]	Additional container command arguments
serviceAccount.annotations	object	{}	Additional service account annotations
serviceAccount.create	bool	false	Enable service account creation
serviceAccount.name	string	""	Name of the service account
affinity	object	{}	Pod affinity
tolerations	list	[]	Pod tolerations
podManagementPolicy	string	OrderedReady	Pod management policy
updateStrategyType	string	RollingUpdate	Update strategy
revisionHistoryLimit	int	nil	Maximum number of revisions maintained in revision history

Service paramters

Key	Type	Default	Description
service.type	string	"ClusterIP"	Service type
service.httpPort	int	9200	Elasticsearch http service port
service.transportPort	int	9300	Elasticsearch transport service port
service.httpNodePort	int	nil	The http node port (only relevant for type LoadBalancer or NodePort)
service.transportNodePort	int	nil	The transport node port (only relevant for type LoadBalancer or NodePort)
service.clusterIP	string	nil	The cluster ip address (only relevant for type LoadBalancer or NodePort)
service.loadBalancerIP	string	nil	The load balancer ip address (only relevant for type LoadBalancer)

Ingress parameters

Key	Type	Default	Description
ingress.enabled	bool	false	Enable ingress for Gitea service
ingress.annotations	string	nil	Additional annotations for ingress
ingress.hosts[].host	string	nil	Hostname for the ingress endpoint
ingress.hosts[].host.paths[]	string	nil	Path routing for the ingress endpoint host
ingress.tls	list	[]	Ingress TLS parameters

Storage parameters

Key	Type	Default	Description
storage.accessModes[0]	string	"ReadWriteOnce"	Storage access mode
storage.persistentVolumeClaimName	string	nil	PVC name when existing storage volume should be used
storage.requestedSize	string	nil	Size for new PVC, when no existing PVC is used
storage.className	string	nil	Storage class name

Elasticsearch parameters

Key	Type	Default	Description
settings.discoveryType	string	single-node	The cluster discovery type
settings.javaOpts	string	-Xms512m -Xmx512m	Additional JVM options
settings.clusterName	string	singlenode-cluster	Cluster name

Further Elasticsearch parameters can be set via environment variables (see Deployment parameter: env)