Bitnami package for Apache Spark

Apache Spark is a high-performance engine for large-scale computing tasks, such as data processing, machine learning and real-time data streaming. It includes APIs for Java, Python, Scala and R.

Overview of Apache Spark

Trademarks: This software listing is packaged by Bitnami. The respective trademarks mentioned in the offering are owned by the respective companies, and use of them does not imply any affiliation or endorsement.

TL;DR

helm install my-release oci://REGISTRY_NAME/REPOSITORY_NAME/spark

Note: You need to substitute the placeholders REGISTRY_NAME and REPOSITORY_NAME with a reference to your Helm chart registry and repository.

Introduction

This chart bootstraps an Apache Spark deployment on a Kubernetes cluster using the Helm package manager.

Apache Spark includes APIs for Java, Python, Scala and R.

Bitnami charts can be used with Kubeapps for deployment and management of Helm Charts in clusters.

Prerequisites

• Kubernetes 1.23+
• Helm 3.8.0+

Installing the Chart

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

helm install my-release oci://REGISTRY_NAME/REPOSITORY_NAME/spark

Note: You need to substitute the placeholders REGISTRY_NAME and REPOSITORY_NAME with a reference to your Helm chart registry and repository. For example, in the case of Bitnami, you need to use REGISTRY_NAME=registry-1.docker.io and REPOSITORY_NAME=bitnamicharts.

These commands deploy Apache Spark on the Kubernetes cluster in the default configuration. The Parameters section lists the parameters that can be configured during installation.

Tip: List all releases using helm list

Configuration and installation details

Resource requests and limits

Bitnami charts allow setting resource requests and limits for all containers inside the chart deployment. These are inside the resources value (check parameter table). Setting requests is essential for production workloads and these should be adapted to your specific use case.

To make this process easier, the chart contains the resourcesPreset values, which automatically sets the resources section according to different presets. Check these presets in the bitnami/common chart. However, in production workloads using resourcePreset is discouraged as it may not fully adapt to your specific needs. Find more information on container resource management in the official Kubernetes documentation.

Rolling vs Immutable tags

It is strongly recommended to use immutable tags in a production environment. This ensures your deployment does not change automatically if the same tag is updated with a different image.

Bitnami will release a new chart updating its containers if a new version of the main container, significant changes, or critical vulnerabilities exist.

Define custom configuration

To use a custom configuration, a ConfigMap should be created with the spark-env.sh file inside the ConfigMap. The ConfigMap name must be provided at deployment time.

To set the configuration on the master use master.configurationConfigMap=configMapName. To set the configuration on the worker, use worker.configurationConfigMap=configMapName.

These values can be set at the same time in a single ConfigMap or using two ConfigMaps. An additional spark-defaults.conf file can be provided in the ConfigMap. You can use both files or one without the other.

Submit an application

To submit an application to the Apache Spark cluster, use the spark-submit script, which is available at https://github.com/apache/spark/tree/master/bin.

The command below illustrates the process of deploying one of the sample applications included with Apache Spark. Replace the k8s-apiserver-host, k8s-apiserver-port, spark-master-svc, and spark-master-port placeholders with the correct master host/IP address and port for your deployment.

$ ./bin/spark-submit \
    --class org.apache.spark.examples.SparkPi \
    --conf spark.kubernetes.container.image=bitnami/spark:3 \
    --master k8s://https://k8s-apiserver-host:k8s-apiserver-port \
    --conf spark.kubernetes.driverEnv.SPARK_MASTER_URL=spark://spark-master-svc:spark-master-port \
    --deploy-mode cluster \
    ./examples/jars/spark-examples_2.12-3.2.0.jar 1000

This command example assumes that you have downloaded a Spark binary distribution, which can be found at Download Apache Spark.

For a complete walkthrough of the process using a custom application, refer to Spark’s guide to Running Spark on Kubernetes.

Be aware that it is currently not possible to submit an application to a standalone cluster if RPC authentication is configured. Learn more about the issue.

Configuring Spark Master as reverse proxy

Spark offers configuration to enable running Spark Master as reverse proxy for worker and application UIs. This can be useful as the Spark Master UI may otherwise use private IPv4 addresses for links to Spark workers and Spark apps.

Coupled with ingress configuration, you can set master.configOptions and worker.configOptions to tell Spark to reverse proxy the worker and application UIs to enable access without requiring direct access to their hosts:

master:
  configOptions:
    -Dspark.ui.reverseProxy=true
    -Dspark.ui.reverseProxyUrl=https://spark.your-domain.com
worker:
  configOptions:
    -Dspark.ui.reverseProxy=true
    -Dspark.ui.reverseProxyUrl=https://spark.your-domain.com
ingress:
  enabled: true
  hostname: spark.your-domain.com

See the Spark Configuration docs for detail on the parameters.

Configure security for Apache Spark

Configure SSL communication

In order to enable secure transport between workers and master, deploy the Helm chart with the ssl.enabled=true chart parameter.

Create certificate and password secrets

It is necessary to create two secrets for the passwords and certificates. The names of the two secrets should be configured using the security.passwordsSecretName and security.ssl.existingSecret chart parameters.

Create certificates and the certificate secret

To generate the certificates secret, first generate the two certificates and rename them to spark-keystore.jks and spark-truststore.jks. Use this script to generate certificates for test purposes if required.

Once the certificates are created, create a secret for them with the file names as keys. The keys must be named spark-keystore.jks and spark-truststore.jks, and the content must be text in JKS format.

Create the password secret

The secret for passwords should have three keys: rpc-authentication-secret, ssl-keystore-password and ssl-truststore-password.

Configure the chart

Once the secrets are created, configure the chart and set the various security-related parameters, including the security.certificatesSecretName and security.passwordsSecretName parameters referencing the secrets created previously. Here is an example configuration for chart deployment:

security.certificatesSecretName=my-secret
security.passwordsSecretName=my-passwords-secret
security.rpc.authenticationEnabled=true
security.rpc.encryptionEnabled=true
security.storageEncrytionEnabled=true
security.ssl.enabled=true
security.ssl.needClientAuth=true

NOTE: It is currently not possible to submit an application to a standalone cluster if RPC authentication is configured. Learn more about this issue.

Set Pod affinity

This chart allows you to set your custom affinity using the XXX.affinity parameter(s). Find more information about Pod affinity in the Kubernetes documentation.

As an alternative, you can use the preset configurations for pod affinity, pod anti-affinity, and node affinity available at the bitnami/common chart. To do so, set the XXX.podAffinityPreset, XXX.podAntiAffinityPreset, or XXX.nodeAffinityPreset parameters.

Parameters

Global parameters

Name	Description	Value
global.imageRegistry	Global Docker image registry	""
global.imagePullSecrets	Global Docker registry secret names as an array	[]
global.defaultStorageClass	Global default StorageClass for Persistent Volume(s)	""
global.storageClass	DEPRECATED: use global.defaultStorageClass instead	""
global.compatibility.openshift.adaptSecurityContext	Adapt the securityContext sections of the deployment to make them compatible with Openshift restricted-v2 SCC: remove runAsUser, runAsGroup and fsGroup and let the platform use their allowed default IDs. Possible values: auto (apply if the detected running cluster is Openshift), force (perform the adaptation always), disabled (do not perform adaptation)	auto

Common parameters

Name	Description	Value
kubeVersion	Force target Kubernetes version (using Helm capabilities if not set)	""
nameOverride	String to partially override common.names.fullname template (will maintain the release name)	""
fullnameOverride	String to fully override common.names.fullname template	""
namespaceOverride	String to fully override common.names.namespace	""
commonLabels	Labels to add to all deployed objects	{}
commonAnnotations	Annotations to add to all deployed objects	{}
clusterDomain	Kubernetes cluster domain name	cluster.local
extraDeploy	Array of extra objects to deploy with the release	[]
initScripts	Dictionary of init scripts. Evaluated as a template.	{}
initScriptsCM	ConfigMap with the init scripts. Evaluated as a template.	""
initScriptsSecret	Secret containing /docker-entrypoint-initdb.d scripts to be executed at initialization time that contain sensitive data. Evaluated as a template.	""
diagnosticMode.enabled	Enable diagnostic mode (all probes will be disabled and the command will be overridden)	false
diagnosticMode.command	Command to override all containers in the deployment	["sleep"]
diagnosticMode.args	Args to override all containers in the deployment	["infinity"]

Spark parameters

Name	Description	Value
image.registry	Spark image registry	REGISTRY_NAME
image.repository	Spark image repository	REPOSITORY_NAME/spark
image.digest	Spark image digest in the way sha256:aa…. Please note this parameter, if set, will override the tag	""
image.pullPolicy	Spark image pull policy	IfNotPresent
image.pullSecrets	Specify docker-registry secret names as an array	[]
image.debug	Enable image debug mode	false
hostNetwork	Enable HOST Network	false

Spark master parameters

Name	Description	Value
master.existingConfigmap	The name of an existing ConfigMap with your custom configuration for master	""
master.containerPorts.http	Specify the port where the web interface will listen on the master over HTTP	8080
master.containerPorts.https	Specify the port where the web interface will listen on the master over HTTPS	8480
master.containerPorts.cluster	Specify the port where the master listens to communicate with workers	7077
master.automountServiceAccountToken	Mount Service Account token in pod	false
master.hostAliases	Deployment pod host aliases	[]
master.extraContainerPorts	Specify the port where the running jobs inside the masters listens	[]
master.daemonMemoryLimit	Set the memory limit for the master daemon	""
master.configOptions	Use a string to set the config options for in the form “-Dx=y”	""
master.extraEnvVars	Extra environment variables to pass to the master container	[]
master.extraEnvVarsCM	Name of existing ConfigMap containing extra env vars for master nodes	""
master.extraEnvVarsSecret	Name of existing Secret containing extra env vars for master nodes	""
master.podSecurityContext.enabled	Enable security context	true
master.podSecurityContext.fsGroupChangePolicy	Set filesystem group change policy	Always
master.podSecurityContext.sysctls	Set kernel settings using the sysctl interface	[]
master.podSecurityContext.supplementalGroups	Set filesystem extra groups	[]
master.podSecurityContext.fsGroup	Set master pod’s Security Context Group ID	1001
master.containerSecurityContext.enabled	Enabled containers’ Security Context	true
master.containerSecurityContext.seLinuxOptions	Set SELinux options in container	nil
master.containerSecurityContext.runAsUser	Set containers’ Security Context runAsUser	1001
master.containerSecurityContext.runAsGroup	Set containers’ Security Context runAsGroup	1001
master.containerSecurityContext.runAsNonRoot	Set container’s Security Context runAsNonRoot	true
master.containerSecurityContext.privileged	Set container’s Security Context privileged	false
master.containerSecurityContext.readOnlyRootFilesystem	Set container’s Security Context readOnlyRootFilesystem	true
master.containerSecurityContext.allowPrivilegeEscalation	Set container’s Security Context allowPrivilegeEscalation	false
master.containerSecurityContext.capabilities.drop	List of capabilities to be dropped	["ALL"]
master.containerSecurityContext.seccompProfile.type	Set container’s Security Context seccomp profile	RuntimeDefault
master.command	Override default container command (useful when using custom images)	[]
master.args	Override default container args (useful when using custom images)	[]
master.podAnnotations	Annotations for pods in StatefulSet	{}
master.podLabels	Extra labels for pods in StatefulSet	{}
master.podAffinityPreset	Spark master pod affinity preset. Ignored if master.affinity is set. Allowed values: soft or hard	""
master.podAntiAffinityPreset	Spark master pod anti-affinity preset. Ignored if master.affinity is set. Allowed values: soft or hard	soft
master.nodeAffinityPreset.type	Spark master node affinity preset type. Ignored if master.affinity is set. Allowed values: soft or hard	""
master.nodeAffinityPreset.key	Spark master node label key to match Ignored if master.affinity is set.	""
master.nodeAffinityPreset.values	Spark master node label values to match. Ignored if master.affinity is set.	[]
master.affinity	Spark master affinity for pod assignment	{}
master.nodeSelector	Spark master node labels for pod assignment	{}
master.tolerations	Spark master tolerations for pod assignment	[]
master.updateStrategy.type	Master statefulset strategy type.	RollingUpdate
master.priorityClassName	master pods’ priorityClassName	""
master.topologySpreadConstraints	Topology Spread Constraints for pod assignment spread across your cluster among failure-domains. Evaluated as a template	[]
master.schedulerName	Name of the k8s scheduler (other than default) for master pods	""
master.terminationGracePeriodSeconds	Seconds Redmine pod needs to terminate gracefully	""
master.lifecycleHooks	for the master container(s) to automate configuration before or after startup	{}
master.extraVolumes	Optionally specify extra list of additional volumes for the master pod(s)	[]
master.extraVolumeMounts	Optionally specify extra list of additional volumeMounts for the master container(s)	[]
master.extraVolumeClaimTemplates	Optionally specify extra list of volumesClaimTemplates for the master statefulset	[]
master.resourcesPreset	Set container resources according to one common preset (allowed values: none, nano, micro, small, medium, large, xlarge, 2xlarge). This is ignored if master.resources is set (master.resources is recommended for production).	small
master.resources	Set container requests and limits for different resources like CPU or memory (essential for production workloads)	{}
master.livenessProbe.enabled	Enable livenessProbe	true
master.livenessProbe.initialDelaySeconds	Initial delay seconds for livenessProbe	180
master.livenessProbe.periodSeconds	Period seconds for livenessProbe	20
master.livenessProbe.timeoutSeconds	Timeout seconds for livenessProbe	5
master.livenessProbe.failureThreshold	Failure threshold for livenessProbe	6
master.livenessProbe.successThreshold	Success threshold for livenessProbe	1
master.readinessProbe.enabled	Enable readinessProbe	true
master.readinessProbe.initialDelaySeconds	Initial delay seconds for readinessProbe	30
master.readinessProbe.periodSeconds	Period seconds for readinessProbe	10
master.readinessProbe.timeoutSeconds	Timeout seconds for readinessProbe	5
master.readinessProbe.failureThreshold	Failure threshold for readinessProbe	6
master.readinessProbe.successThreshold	Success threshold for readinessProbe	1
master.startupProbe.enabled	Enable startupProbe	false
master.startupProbe.initialDelaySeconds	Initial delay seconds for startupProbe	30
master.startupProbe.periodSeconds	Period seconds for startupProbe	10
master.startupProbe.timeoutSeconds	Timeout seconds for startupProbe	5
master.startupProbe.failureThreshold	Failure threshold for startupProbe	6
master.startupProbe.successThreshold	Success threshold for startupProbe	1
master.customLivenessProbe	Custom livenessProbe that overrides the default one	{}
master.customReadinessProbe	Custom readinessProbe that overrides the default one	{}
master.customStartupProbe	Custom startupProbe that overrides the default one	{}
master.networkPolicy.enabled	Specifies whether a NetworkPolicy should be created	true
master.networkPolicy.allowExternal	Don’t require client label for connections	true
master.networkPolicy.allowExternalEgress	Allow the pod to access any range of port and all destinations.	true
master.networkPolicy.extraIngress	Add extra ingress rules to the NetworkPolicy	[]
master.networkPolicy.extraEgress	Add extra ingress rules to the NetworkPolicy	[]
master.networkPolicy.ingressNSMatchLabels	Labels to match to allow traffic from other namespaces	{}
master.networkPolicy.ingressNSPodMatchLabels	Pod labels to match to allow traffic from other namespaces	{}
master.sidecars	Add additional sidecar containers to the master pod(s)	[]
master.initContainers	Add initContainers to the master pods.	[]
master.pdb.create	Enable/disable a Pod Disruption Budget creation	true
master.pdb.minAvailable	Minimum number/percentage of pods that should remain scheduled	""
master.pdb.maxUnavailable	Maximum number/percentage of pods that may be made unavailable. Defaults to 1 if both master.pdb.minAvailable and master.pdb.maxUnavailable are empty.	""

Spark worker parameters

Name	Description	Value
worker.existingConfigmap	The name of an existing ConfigMap with your custom configuration for workers	""
worker.containerPorts.http	Specify the port where the web interface will listen on the worker over HTTP	8080
worker.containerPorts.https	Specify the port where the web interface will listen on the worker over HTTPS	8480
worker.containerPorts.cluster	Specify the port where the worker listens to communicate with workers	""
worker.automountServiceAccountToken	Mount Service Account token in pod	false
worker.hostAliases	Add deployment host aliases	[]
worker.extraContainerPorts	Specify the port where the running jobs inside the workers listens	[]
worker.daemonMemoryLimit	Set the memory limit for the worker daemon	""
worker.memoryLimit	Set the maximum memory the worker is allowed to use	""
worker.coreLimit	Se the maximum number of cores that the worker can use	""
worker.dir	Set a custom working directory for the application	""
worker.javaOptions	Set options for the JVM in the form -Dx=y	""
worker.configOptions	Set extra options to configure the worker in the form -Dx=y	""
worker.extraEnvVars	An array to add extra env vars	[]
worker.extraEnvVarsCM	Name of existing ConfigMap containing extra env vars for worker nodes	""
worker.extraEnvVarsSecret	Name of existing Secret containing extra env vars for worker nodes	""
worker.replicaCount	Number of spark workers (will be the minimum number when autoscaling is enabled)	2
worker.podSecurityContext.enabled	Enable security context	true
worker.podSecurityContext.fsGroupChangePolicy	Set filesystem group change policy	Always
worker.podSecurityContext.sysctls	Set kernel settings using the sysctl interface	[]
worker.podSecurityContext.supplementalGroups	Set filesystem extra groups	[]
worker.podSecurityContext.fsGroup	Group ID for the container	1001
worker.podSecurityContext.seLinuxOptions	SELinux options for the container	nil
worker.containerSecurityContext.enabled	Enabled containers’ Security Context	true
worker.containerSecurityContext.seLinuxOptions	Set SELinux options in container	nil
worker.containerSecurityContext.runAsUser	Set containers’ Security Context runAsUser	1001
worker.containerSecurityContext.runAsGroup	Set containers’ Security Context runAsGroup	1001
worker.containerSecurityContext.runAsNonRoot	Set container’s Security Context runAsNonRoot	true
worker.containerSecurityContext.privileged	Set container’s Security Context privileged	false
worker.containerSecurityContext.readOnlyRootFilesystem	Set container’s Security Context readOnlyRootFilesystem	true
worker.containerSecurityContext.allowPrivilegeEscalation	Set container’s Security Context allowPrivilegeEscalation	false
worker.containerSecurityContext.capabilities.drop	List of capabilities to be dropped	["ALL"]
worker.containerSecurityContext.seccompProfile.type	Set container’s Security Context seccomp profile	RuntimeDefault
worker.command	Override default container command (useful when using custom images)	[]
worker.args	Override default container args (useful when using custom images)	[]
worker.podAnnotations	Annotations for pods in StatefulSet	{}
worker.podLabels	Extra labels for pods in StatefulSet	{}
worker.podAffinityPreset	Spark worker pod affinity preset. Ignored if worker.affinity is set. Allowed values: soft or hard	""
worker.podAntiAffinityPreset	Spark worker pod anti-affinity preset. Ignored if worker.affinity is set. Allowed values: soft or hard	soft
worker.nodeAffinityPreset.type	Spark worker node affinity preset type. Ignored if worker.affinity is set. Allowed values: soft or hard	""
worker.nodeAffinityPreset.key	Spark worker node label key to match Ignored if worker.affinity is set.	""
worker.nodeAffinityPreset.values	Spark worker node label values to match. Ignored if worker.affinity is set.	[]
worker.affinity	Spark worker affinity for pod assignment	{}
worker.nodeSelector	Spark worker node labels for pod assignment	{}
worker.tolerations	Spark worker tolerations for pod assignment	[]
worker.updateStrategy.type	Worker statefulset strategy type.	RollingUpdate
worker.podManagementPolicy	Statefulset Pod Management Policy Type	OrderedReady
worker.priorityClassName	worker pods’ priorityClassName	""
worker.topologySpreadConstraints	Topology Spread Constraints for pod assignment spread across your cluster among failure-domains. Evaluated as a template	[]
worker.schedulerName	Name of the k8s scheduler (other than default) for worker pods	""
worker.terminationGracePeriodSeconds	Seconds Redmine pod needs to terminate gracefully	""
worker.lifecycleHooks	for the worker container(s) to automate configuration before or after startup	{}
worker.extraVolumes	Optionally specify extra list of additional volumes for the worker pod(s)	[]
worker.extraVolumeMounts	Optionally specify extra list of additional volumeMounts for the master container(s)	[]
worker.extraVolumeClaimTemplates	Optionally specify extra list of volumesClaimTemplates for the worker statefulset	[]
worker.resourcesPreset	Set container resources according to one common preset (allowed values: none, nano, micro, small, medium, large, xlarge, 2xlarge). This is ignored if worker.resources is set (worker.resources is recommended for production).	small
worker.resources	Set container requests and limits for different resources like CPU or memory (essential for production workloads)	{}
worker.livenessProbe.enabled	Enable livenessProbe	true
worker.livenessProbe.initialDelaySeconds	Initial delay seconds for livenessProbe	180
worker.livenessProbe.periodSeconds	Period seconds for livenessProbe	20
worker.livenessProbe.timeoutSeconds	Timeout seconds for livenessProbe	5
worker.livenessProbe.failureThreshold	Failure threshold for livenessProbe	6
worker.livenessProbe.successThreshold	Success threshold for livenessProbe	1
worker.readinessProbe.enabled	Enable readinessProbe	true
worker.readinessProbe.initialDelaySeconds	Initial delay seconds for readinessProbe	30
worker.readinessProbe.periodSeconds	Period seconds for readinessProbe	10
worker.readinessProbe.timeoutSeconds	Timeout seconds for readinessProbe	5
worker.readinessProbe.failureThreshold	Failure threshold for readinessProbe	6
worker.readinessProbe.successThreshold	Success threshold for readinessProbe	1
worker.startupProbe.enabled	Enable startupProbe	true
worker.startupProbe.initialDelaySeconds	Initial delay seconds for startupProbe	30
worker.startupProbe.periodSeconds	Period seconds for startupProbe	10
worker.startupProbe.timeoutSeconds	Timeout seconds for startupProbe	5
worker.startupProbe.failureThreshold	Failure threshold for startupProbe	6
worker.startupProbe.successThreshold	Success threshold for startupProbe	1
worker.customLivenessProbe	Custom livenessProbe that overrides the default one	{}
worker.customReadinessProbe	Custom readinessProbe that overrides the default one	{}
worker.customStartupProbe	Custom startupProbe that overrides the default one	{}
worker.networkPolicy.enabled	Specifies whether a NetworkPolicy should be created	true
worker.networkPolicy.allowExternal	Don’t require client label for connections	true
worker.networkPolicy.allowExternalEgress	Allow the pod to access any range of port and all destinations.	true
worker.networkPolicy.extraIngress	Add extra ingress rules to the NetworkPolicy	[]
worker.networkPolicy.extraEgress	Add extra ingress rules to the NetworkPolicy	[]
worker.networkPolicy.ingressNSMatchLabels	Labels to match to allow traffic from other namespaces	{}
worker.networkPolicy.ingressNSPodMatchLabels	Pod labels to match to allow traffic from other namespaces	{}
worker.sidecars	Add additional sidecar containers to the worker pod(s)	[]
worker.initContainers	Add initContainers to the worker pods.	[]
worker.pdb.create	Enable/disable a Pod Disruption Budget creation	true
worker.pdb.minAvailable	Minimum number/percentage of pods that should remain scheduled	""
worker.pdb.maxUnavailable	Maximum number/percentage of pods that may be made unavailable. Defaults to 1 if both worker.pdb.minAvailable and worker.pdb.maxUnavailable are empty.	""
worker.autoscaling.enabled	Enable replica autoscaling depending on CPU	false
worker.autoscaling.minReplicas	Minimum number of worker replicas	""
worker.autoscaling.maxReplicas	Maximum number of worker replicas	5
worker.autoscaling.targetCPU	Target CPU utilization percentage	50
worker.autoscaling.targetMemory	Target Memory utilization percentage	""

Security parameters

Name	Description	Value
security.passwordsSecretName	Name of the secret that contains all the passwords	""
security.rpc.authenticationEnabled	Enable the RPC authentication	false
security.rpc.encryptionEnabled	Enable the encryption for RPC	false
security.storageEncryptionEnabled	Enables local storage encryption	false
security.certificatesSecretName	Name of the secret that contains the certificates.	""
security.ssl.enabled	Enable the SSL configuration	false
security.ssl.needClientAuth	Enable the client authentication	false
security.ssl.protocol	Set the SSL protocol	TLSv1.2
security.ssl.existingSecret	Name of the existing secret containing the TLS certificates	""
security.ssl.autoGenerated	Create self-signed TLS certificates. Currently only supports PEM certificates	false
security.ssl.keystorePassword	Set the password of the JKS Keystore	""
security.ssl.truststorePassword	Truststore password.	""
security.ssl.resourcesPreset	Set container resources according to one common preset (allowed values: none, nano, micro, small, medium, large, xlarge, 2xlarge). This is ignored if security.ssl.resources is set (security.ssl.resources is recommended for production).	small
security.ssl.resources	Set container requests and limits for different resources like CPU or memory (essential for production workloads)	{}

Traffic Exposure parameters

Name	Description	Value
service.type	Kubernetes Service type	ClusterIP
service.ports.http	Spark client port for HTTP	80
service.ports.https	Spark client port for HTTPS	443
service.ports.cluster	Spark cluster port	7077
service.nodePorts.http	Kubernetes web node port for HTTP	""
service.nodePorts.https	Kubernetes web node port for HTTPS	""
service.nodePorts.cluster	Kubernetes cluster node port	""
service.clusterIP	Spark service Cluster IP	""
service.loadBalancerIP	Load balancer IP if spark service type is LoadBalancer	""
service.loadBalancerSourceRanges	Spark service Load Balancer sources	[]
service.externalTrafficPolicy	Spark service external traffic policy	Cluster
service.annotations	Additional custom annotations for Spark service	{}
service.extraPorts	Extra ports to expose in Spark service (normally used with the sidecars value)	[]
service.sessionAffinity	Control where client requests go, to the same pod or round-robin	None
service.sessionAffinityConfig	Additional settings for the sessionAffinity	{}
service.headless.annotations	Annotations for the headless service.	{}
ingress.enabled	Enable ingress controller resource	false
ingress.pathType	Ingress path type	ImplementationSpecific
ingress.apiVersion	Force Ingress API version (automatically detected if not set)	""
ingress.hostname	Default host for the ingress resource	spark.local
ingress.ingressClassName	IngressClass that will be be used to implement the Ingress (Kubernetes 1.18+)	""
ingress.path	The Path to Spark. You may need to set this to ‘/*’ in order to use this with ALB ingress controllers.	/
ingress.annotations	Additional annotations for the Ingress resource. To enable certificate autogeneration, place here your cert-manager annotations.	{}
ingress.tls	Enable TLS configuration for the hostname defined at ingress.hostname parameter	false
ingress.selfSigned	Create a TLS secret for this ingress record using self-signed certificates generated by Helm	false
ingress.extraHosts	The list of additional hostnames to be covered with this ingress record.	[]
ingress.extraPaths	Any additional arbitrary paths that may need to be added to the ingress under the main host.	[]
ingress.extraTls	The tls configuration for additional hostnames to be covered with this ingress record.	[]
ingress.secrets	If you’re providing your own certificates, please use this to add the certificates as secrets	[]
ingress.extraRules	Additional rules to be covered with this ingress record	[]

Other parameters

Name	Description	Value
serviceAccount.create	Enable the creation of a ServiceAccount for Spark pods	true
serviceAccount.name	The name of the ServiceAccount to use.	""
serviceAccount.annotations	Annotations for Spark Service Account	{}
serviceAccount.automountServiceAccountToken	Automount API credentials for a service account.	false

Metrics parameters

Name	Description	Value
metrics.enabled	Start a side-car prometheus exporter	false
metrics.masterAnnotations	Annotations for the Prometheus metrics on master nodes	{}
metrics.workerAnnotations	Annotations for the Prometheus metrics on worker nodes	{}
metrics.podMonitor.enabled	If the operator is installed in your cluster, set to true to create a PodMonitor Resource for scraping metrics using PrometheusOperator	false
metrics.podMonitor.extraMetricsEndpoints	Add metrics endpoints for monitoring the jobs running in the worker nodes	[]
metrics.podMonitor.namespace	Specify the namespace in which the podMonitor resource will be created	""
metrics.podMonitor.interval	Specify the interval at which metrics should be scraped	30s
metrics.podMonitor.scrapeTimeout	Specify the timeout after which the scrape is ended	""
metrics.podMonitor.additionalLabels	Additional labels that can be used so PodMonitors will be discovered by Prometheus	{}
metrics.prometheusRule.enabled	Set this to true to create prometheusRules for Prometheus	false
metrics.prometheusRule.namespace	Namespace where the prometheusRules resource should be created	""
metrics.prometheusRule.additionalLabels	Additional labels that can be used so prometheusRules will be discovered by Prometheus	{}
metrics.prometheusRule.rules	Custom Prometheus rules	[]

Specify each parameter using the --set key=value[,key=value] argument to helm install. For example,

helm install my-release \
  --set master.webPort=8081 oci://REGISTRY_NAME/REPOSITORY_NAME/spark

Note: You need to substitute the placeholders REGISTRY_NAME and REPOSITORY_NAME with a reference to your Helm chart registry and repository. For example, in the case of Bitnami, you need to use REGISTRY_NAME=registry-1.docker.io and REPOSITORY_NAME=bitnamicharts.

The above command sets the spark master web port to 8081.

Alternatively, a YAML file that specifies the values for the parameters can be provided while installing the chart. For example,

helm install my-release -f values.yaml oci://REGISTRY_NAME/REPOSITORY_NAME/spark

Note: You need to substitute the placeholders REGISTRY_NAME and REPOSITORY_NAME with a reference to your Helm chart registry and repository. For example, in the case of Bitnami, you need to use REGISTRY_NAME=registry-1.docker.io and REPOSITORY_NAME=bitnamicharts. Tip: You can use the default values.yaml

Troubleshooting

Find more information about how to deal with common errors related to Bitnami’s Helm charts in this troubleshooting guide.

Upgrading

To 9.0.0

This major bump changes the following security defaults:

• runAsGroup is changed from 0 to 1001
• readOnlyRootFilesystem is set to true
• resourcesPreset is changed from none to the minimum size working in our test suites (NOTE: resourcesPreset is not meant for production usage, but resources adapted to your use case).
• global.compatibility.openshift.adaptSecurityContext is changed from disabled to auto.

This could potentially break any customization or init scripts used in your deployment. If this is the case, change the default values to the previous ones.

To 6.0.0

This chart major version standarizes the chart templates and values, modifying some existing parameters names and adding several more. These parameter modifications can be sumarised in the following:

• worker.autoscaling.CpuTargetPercentage/.replicasMax parameters are now found by worker.autoscaling.targetCPU/.maxReplicas.
• webport/webPortHttps/cluster parameters are now found by containerPorts.http/.https/.cluster.
• service.webport/webPortHttps/cluster parameters are now found by service.ports.http/.https/.cluster.
• service.nodePorts.web/webHttps/cluster parameters are now found by service.nodePorts.http/.https/.cluster.
• xxxxx.securityContext parameters are now under xxxxx.podSecurityContext
• xxxxx.configurationConfigMap parameter has been renamed to xxxxx.existingConfigmap
• extraPodLabels parameter has been renamed to podLabels

Besides the changes detailed above, no issues are expected to appear when upgrading.

To 5.0.0

This version standardizes the way of defining Ingress rules. When configuring a single hostname for the Ingress rule, set the ingress.hostname value. When defining more than one, set the ingress.extraHosts array. Apart from this case, no issues are expected to appear when upgrading.

To 4.0.0

On November 13, 2020, Helm v2 support formally ended. This major version is the result of the required changes applied to the Helm Chart to be able to incorporate the different features added in Helm v3 and to be consistent with the Helm project itself regarding the Helm v2 EOL.

To 3.0.0

• This version introduces bitnami/common, a library chart as a dependency. More documentation about this new utility could be found here. Please, make sure that you have updated the chart dependencies before executing any upgrade.

• Spark container images are updated to use Hadoop 3.2.x: Notable Changes: 3.0.0-debian-10-r44

Note: Backwards compatibility is not guaranteed due to the above mentioned changes. Please make sure your workloads are compatible with the new version of Hadoop before upgrading. Backups are always recommended before any upgrade operation.

License

Copyright © 2024 Broadcom. The term “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.

Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.