Zeebe Cluster Helm Chart

This functionality is in beta and is subject to change. The design and code is less mature than official GA features and is being provided as-is with no warranties. Beta features are not subject to the support SLA of official GA features.

Requirements

• Helm >= 2.8.0
• Kubernetes >= 1.8
• Minimum cluster requirements include the following to run this chart with default settings. All of these settings are configurable.
  • Three Kubernetes nodes to respect the default "hard" affinity settings
  • 1GB of RAM for the JVM heap

Installing

• Add the official zeebe helm charts repo

  helm repo add zeebe https://helm.zeebe.io

• Install it

  helm install --name zeebe-cluster zeebe/zeebe-cluster

Configuration

Parameter	Description	Default
labels	labels to be applied to the StatefulSet and Service	app: zeebe
annotations	annotations to be applied to the StatefulSet and Service	``
podAnnotations	annotations to be applied to the StatefulSet pod Template	``
elasticsearch.enabled	Enable ElasticSearch deployment as part of the Zeebe Cluster	true
kibana.enabled	Enable Kibana deployment as part of the Zeebe Cluster	false
prometheus.enabled	Enable Prometheus operator as part of the Zeebe Cluster	false
prometheus.servicemonitor.enabled	Deploy a ServiceMonitor for your Zeebe Cluster	false
clusterSize	Set the Zeebe Cluster Size and the number of replicas of the replica set	3
partitionCount	Set the Zeebe Cluster partition count	3
replicationFactor	Set the Zeebe Cluster replication factor	3
cpuThreadCount	Set the Zeebe Cluster CPU thread count	2
ioThreadCount	Set the Zeebe Cluster IO thread count	2
zeebeCfg	Can be used to set several zeebe configuration options.	null
gatewayMetrics	Enables the exporting of the gateway prometheus metrics	false
JavaOpts	Set the Zeebe Cluster Broker JavaOpts. This is where you should configure the jvm heap size.	-XX:+UseParallelGC -XX:MinHeapFreeRatio=5 -XX:MaxHeapFreeRatio=10 -XX:MaxRAMPercentage=25.0 -XX:GCTimeRatio=4 -XX:AdaptiveSizePolicyWeight=90 -XX:+PrintFlagsFinal
resources	Set the Zeebe Cluster Broker Kubernetes Resource Request and Limits	requests: cpu: 500m memory: 1Gi limits: cpu: 1000m memory: 2Gi
pvcSize	Set the Zeebe Cluster Persistence Volume Claim Request storage size	10Gi
pvcAccessModes	Set the Zeebe Cluster Persistence Volume Claim Request accessModes	[ "ReadWriteOnce" ]
pvcStorageClassName	Set the Zeebe Cluster Persistence Volume Claim Request storageClassName	``
extraInitContainers	add extra initContainers sections to StatefulSet	``
nodeSelector	Node selection constraint to schedule Zeebe on specific nodes	{}
tolerations	Tolerations to allow Zeebe to run on dedicated nodes	[]
affinity	Use affinity constraints to schedule Zeebe on specific nodes	{}

Dependencies

This chart currently depends on the following charts:

• ElasticSearch Helm Chart
• Kibana Helm Chart
• Prometheus Operator Helm Chart

These dependencies can be turned on or off and parameters can be overriden from these dependent charts by changing the values.yaml file. For example:

elasticsearch:
  enabled: true
  imageTag: <YOUR VERSION HERE>
kibana:
  enabled: false