Bitnami package for Apache Cassandra

Apache Cassandra is an open source distributed database management system designed to handle large amounts of data across many servers, providing high availability with no single point of failure.

Overview of Apache Cassandra

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/cassandra

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 Cassandra deployment on a Kubernetes cluster using the Helm package manager.

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

Prerequisites

  • Kubernetes 1.23+
  • Helm 3.8.0+
  • PV provisioner support in the underlying infrastructure

Installing the Chart

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

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

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 one node with Apache Cassandra 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.

Enable TLS

This chart supports TLS between client and server and between nodes, as explained below:

  • For internode cluster encryption, set the tls.internodeEncryption chart parameter to a value different from none. Available values are all, dc or rack.
  • For client-server encryption, set the tls.clientEncryption chart parameter to true.

In both cases, it is also necessary to create a secret containing the keystore and truststore certificates and their corresponding protection passwords. This secret is to be passed to the chart via the tls.existingSecret parameter at deployment-time, as shown below:

tls.internodeEncryption=all
tls.clientEncryption=true
tls.existingSecret=my-exisiting-stores
tls.passwordsSecret=my-stores-password

TIP: The secret may be created in the standard way with the --from-file=./keystore, --from-file=./truststore, --from-literal=keystore-password=KEYSTORE_PASSWORD and --from-literal=truststore-password=TRUSTSTORE_PASSWORD options. This assumes that the stores are in the current working directory and the KEYSTORE_PASSWORD and TRUSTSTORE_PASSWORD placeholders are replaced with the correct keystore and truststore passwords respectively. Example:

kubectl create secret generic my-exisiting-stores --from-file=./keystore --from-file=./truststore
kubectl create secret generic my-stores-password --from-literal=keystore-password=KEYSTORE_PASSWORD --from-literal=truststore-password=TRUSTSTORE_PASSWORD

Keystore and Truststore files can be dynamically created from the certificates files. In this case a secret with the tls.crt, tls.key and ca.crt in pem format is required. The following example shows how the secret can be created and assumes that all certificate files are in the working directory:

kubectl create secret tls my-certs --cert ./tls.crt --key ./tls.key
kubectl patch secret my-certs -p="{\"data\":{\"ca.crt\": \"$(cat ./ca.crt | base64 )\"}}"

To enable this feature tls.autoGenerated must be set and the new secret should be set in tls.certificateSecret:

tls.internodeEncryption=all
tls.clientEncryption=true
tls.autoGenerated=true
tls.certificatesSecret=my-certs
tls.passwordsSecret=my-stores-password

Initialize the database

The Apache Cassandra image supports the use of custom scripts to initialize a fresh instance. This may be done by creating a Kubernetes ConfigMap that includes the necessary .sh or .cql scripts and passing this ConfigMap to the chart via the initDBConfigMap parameter.

Use a custom configuration file

This chart also supports mounting custom configuration file(s) for Apache Cassandra. This is achieved by setting the existingConfiguration parameter with the name of a ConfigMap that includes the custom configuration file(s). Here is an example of deploying the chart with a custom configuration file stored in a ConfigMap named cassandra-configuration:

existingConfiguration=cassandra-configuration

NOTE: This ConfigMap will override other Apache Cassandra configuration variables set in the chart.

Backup and restore

Refer to our detailed tutorial on backing up and restoring Bitnami Apache Cassandra deployments on Kubernetes.

Set pod affinity

This chart allows you to set custom pod 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.

Persistence

The Bitnami Apache Cassandra image stores the Apache Cassandra data at the /bitnami/cassandra path of the container.

Persistent Volume Claims are used to keep the data across deployments. This is known to work in GCE, AWS, and minikube. See the Parameters section to configure the PVC or to disable persistence.

If you encounter errors when working with persistent volumes, refer to our troubleshooting guide for persistent volumes.

Adjust permissions of persistent volume mountpoint

As the image run as non-root by default, it is necessary to adjust the ownership of the persistent volume so that the container can write data into it. There are two approaches to achieve this:

  • Use Kubernetes SecurityContexts by setting the podSecurityContext.enabled and containerSecurityContext.enabled to true. This option is enabled by default in the chart. However, this feature does not work in all Kubernetes distributions.
  • Use an init container to change the ownership of the volume before mounting it in the final destination. Enable this container by setting the volumePermissions.enabled parameter to true.

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.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
nameOverride String to partially override common.names.fullname ""
fullnameOverride String to fully override common.names.fullname ""
kubeVersion Force target Kubernetes version (using Helm capabilities if not set) ""
commonLabels Labels to add to all deployed objects (sub-charts are not considered) {}
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 []
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"]

Cassandra parameters

Name Description Value
image.registry Cassandra image registry REGISTRY_NAME
image.repository Cassandra image repository REPOSITORY_NAME/cassandra
image.digest Cassandra image digest in the way sha256:aa…. Please note this parameter, if set, will override the tag ""
image.pullPolicy image pull policy IfNotPresent
image.pullSecrets Cassandra image pull secrets []
image.debug Enable image debug mode false
dbUser.user Cassandra admin user cassandra
dbUser.forcePassword Force the user to provide a non false
dbUser.password Password for dbUser.user. Randomly generated if empty ""
dbUser.existingSecret Use an existing secret object for dbUser.user password (will ignore dbUser.password) ""
initDB Object with cql scripts. Useful for creating a keyspace and pre-populating data {}
initDBConfigMap ConfigMap with cql scripts. Useful for creating a keyspace and pre-populating data ""
initDBSecret Secret with cql script (with sensitive data). Useful for creating a keyspace and pre-populating data ""
existingConfiguration ConfigMap with custom cassandra configuration files. This overrides any other Cassandra configuration set in the chart ""
cluster.name Cassandra cluster name cassandra
cluster.seedCount Number of seed nodes 1
cluster.numTokens Number of tokens for each node 256
cluster.datacenter Datacenter name dc1
cluster.rack Rack name rack1
cluster.endpointSnitch Endpoint Snitch SimpleSnitch
cluster.clientEncryption Client Encryption false
cluster.extraSeeds For an external/second cassandra ring. []
cluster.enableUDF Enable User defined functions false
jvm.extraOpts Set the value for Java Virtual Machine extra options ""
jvm.maxHeapSize Set Java Virtual Machine maximum heap size (MAX_HEAP_SIZE). Calculated automatically if nil ""
jvm.newHeapSize Set Java Virtual Machine new heap size (HEAP_NEWSIZE). Calculated automatically if nil ""
command Command for running the container (set to default if not set). Use array form []
args Args for running the container (set to default if not set). Use array form []
extraEnvVars Extra environment variables to be set on cassandra container []
extraEnvVarsCM Name of existing ConfigMap containing extra env vars ""
extraEnvVarsSecret Name of existing Secret containing extra env vars ""

Statefulset parameters

Name Description Value
replicaCount Number of Cassandra replicas 1
updateStrategy.type updateStrategy for Cassandra statefulset RollingUpdate
automountServiceAccountToken Mount Service Account token in pod false
hostAliases Add deployment host aliases []
podManagementPolicy StatefulSet pod management policy OrderedReady
priorityClassName Cassandra pods’ priority. ""
podAnnotations Additional pod annotations {}
podLabels Additional pod labels {}
podAffinityPreset Pod affinity preset. Ignored if affinity is set. Allowed values: soft or hard ""
podAntiAffinityPreset Pod anti-affinity preset. Ignored if affinity is set. Allowed values: soft or hard soft
nodeAffinityPreset.type Node affinity preset type. Ignored if affinity is set. Allowed values: soft or hard ""
nodeAffinityPreset.key Node label key to match. Ignored if affinity is set ""
nodeAffinityPreset.values Node label values to match. Ignored if affinity is set []
affinity Affinity for pod assignment {}
nodeSelector Node labels for pod assignment {}
tolerations Tolerations for pod assignment []
topologySpreadConstraints Topology Spread Constraints for pod assignment []
podSecurityContext.enabled Enabled Cassandra pods’ Security Context true
podSecurityContext.fsGroupChangePolicy Set filesystem group change policy Always
podSecurityContext.sysctls Set kernel settings using the sysctl interface []
podSecurityContext.supplementalGroups Set filesystem extra groups []
podSecurityContext.fsGroup Set Cassandra pod’s Security Context fsGroup 1001
containerSecurityContext.enabled Enabled Cassandra containers’ Security Context true
containerSecurityContext.seLinuxOptions Set SELinux options in container {}
containerSecurityContext.runAsUser Set Cassandra containers’ Security Context runAsUser 1001
containerSecurityContext.runAsGroup Set Cassandra containers’ Security Context runAsGroup 1001
containerSecurityContext.allowPrivilegeEscalation Set Cassandra containers’ Security Context allowPrivilegeEscalation false
containerSecurityContext.capabilities.drop Set Cassandra containers’ Security Context capabilities to be dropped ["ALL"]
containerSecurityContext.readOnlyRootFilesystem Set Cassandra containers’ Security Context readOnlyRootFilesystem true
containerSecurityContext.runAsNonRoot Set Cassandra containers’ Security Context runAsNonRoot true
containerSecurityContext.privileged Set container’s Security Context privileged false
containerSecurityContext.seccompProfile.type Set container’s Security Context seccomp profile RuntimeDefault
resourcesPreset Set container resources according to one common preset (allowed values: none, nano, micro, small, medium, large, xlarge, 2xlarge). This is ignored if resources is set (resources is recommended for production). large
resources Set container requests and limits for different resources like CPU or memory (essential for production workloads) {}
livenessProbe.enabled Enable livenessProbe true
livenessProbe.initialDelaySeconds Initial delay seconds for livenessProbe 60
livenessProbe.periodSeconds Period seconds for livenessProbe 30
livenessProbe.timeoutSeconds Timeout seconds for livenessProbe 30
livenessProbe.failureThreshold Failure threshold for livenessProbe 5
livenessProbe.successThreshold Success threshold for livenessProbe 1
readinessProbe.enabled Enable readinessProbe true
readinessProbe.initialDelaySeconds Initial delay seconds for readinessProbe 60
readinessProbe.periodSeconds Period seconds for readinessProbe 10
readinessProbe.timeoutSeconds Timeout seconds for readinessProbe 30
readinessProbe.failureThreshold Failure threshold for readinessProbe 5
readinessProbe.successThreshold Success threshold for readinessProbe 1
startupProbe.enabled Enable startupProbe false
startupProbe.initialDelaySeconds Initial delay seconds for startupProbe 0
startupProbe.periodSeconds Period seconds for startupProbe 10
startupProbe.timeoutSeconds Timeout seconds for startupProbe 5
startupProbe.failureThreshold Failure threshold for startupProbe 60
startupProbe.successThreshold Success threshold for startupProbe 1
customLivenessProbe Custom livenessProbe that overrides the default one {}
customReadinessProbe Custom readinessProbe that overrides the default one {}
customStartupProbe Override default startup probe {}
lifecycleHooks Override default etcd container hooks {}
schedulerName Alternative scheduler ""
terminationGracePeriodSeconds In seconds, time the given to the Cassandra pod needs to terminate gracefully ""
extraVolumes Optionally specify extra list of additional volumes for cassandra container []
extraVolumeMounts Optionally specify extra list of additional volumeMounts for cassandra container []
initContainers Add additional init containers to the cassandra pods []
sidecars Add additional sidecar containers to the cassandra pods []
pdb.create Enable/disable a Pod Disruption Budget creation true
pdb.minAvailable Mininimum number of pods that must still be available after the eviction ""
pdb.maxUnavailable Max number of pods that can be unavailable after the eviction ""
hostNetwork Enable HOST Network false
containerPorts.intra Intra Port on the Host and Container 7000
containerPorts.tls TLS Port on the Host and Container 7001
containerPorts.jmx JMX Port on the Host and Container 7199
containerPorts.cql CQL Port on the Host and Container 9042
hostPorts.intra Intra Port on the Host ""
hostPorts.tls TLS Port on the Host ""
hostPorts.jmx JMX Port on the Host ""
hostPorts.cql CQL Port on the Host ""

RBAC parameters

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

Traffic Exposure Parameters

Name Description Value
service.type Cassandra service type ClusterIP
service.ports.cql Cassandra service CQL Port 9042
service.ports.metrics Cassandra service metrics port 8080
service.nodePorts.cql Node port for CQL ""
service.nodePorts.metrics Node port for metrics ""
service.extraPorts Extra ports to expose in the service (normally used with the sidecar value) []
service.loadBalancerIP LoadBalancerIP if service type is LoadBalancer ""
service.loadBalancerSourceRanges Service Load Balancer sources []
service.clusterIP Service Cluster IP ""
service.externalTrafficPolicy Service external traffic policy Cluster
service.annotations Provide any additional annotations which may be required. {}
service.sessionAffinity Session Affinity for Kubernetes service, can be “None” or “ClientIP” None
service.sessionAffinityConfig Additional settings for the sessionAffinity {}
service.headless.annotations Annotations for the headless service. {}
networkPolicy.enabled Specifies whether a NetworkPolicy should be created true
networkPolicy.allowExternal Don’t require server label for connections true
networkPolicy.allowExternalEgress Allow the pod to access any range of port and all destinations. true
networkPolicy.extraIngress Add extra ingress rules to the NetworkPolicy []
networkPolicy.extraEgress Add extra ingress rules to the NetworkPolicy (ignored if allowExternalEgress=true) []
networkPolicy.ingressNSMatchLabels Labels to match to allow traffic from other namespaces {}
networkPolicy.ingressNSPodMatchLabels Pod labels to match to allow traffic from other namespaces {}

Persistence parameters

Name Description Value
persistence.enabled Enable Cassandra data persistence using PVC, use a Persistent Volume Claim, If false, use emptyDir true
persistence.existingClaim Name of an existing PVC to use ""
persistence.storageClass PVC Storage Class for Cassandra data volume ""
persistence.commitStorageClass PVC Storage Class for Cassandra Commit Log volume ""
persistence.annotations Persistent Volume Claim annotations {}
persistence.accessModes Persistent Volume Access Mode ["ReadWriteOnce"]
persistence.size PVC Storage Request for Cassandra data volume 8Gi
persistence.commitLogsize PVC Storage Request for Cassandra commit log volume. Unset by default 2Gi
persistence.mountPath The path the data volume will be mounted at /bitnami/cassandra
persistence.commitLogMountPath The path the commit log volume will be mounted at. Unset by default. Set it to ‘/bitnami/cassandra/commitlog’ to enable a separate commit log volume ""

Volume Permissions parameters

Name Description Value
volumePermissions.enabled Enable init container that changes the owner and group of the persistent volume false
volumePermissions.image.registry Init container volume image registry REGISTRY_NAME
volumePermissions.image.repository Init container volume image repository REPOSITORY_NAME/os-shell
volumePermissions.image.digest Init container volume image digest in the way sha256:aa…. Please note this parameter, if set, will override the tag ""
volumePermissions.image.pullPolicy Init container volume pull policy IfNotPresent
volumePermissions.image.pullSecrets Specify docker-registry secret names as an array []
volumePermissions.resourcesPreset Set container resources according to one common preset (allowed values: none, nano, micro, small, medium, large, xlarge, 2xlarge). This is ignored if volumePermissions.resources is set (volumePermissions.resources is recommended for production). nano
volumePermissions.resources Set container requests and limits for different resources like CPU or memory (essential for production workloads) {}
volumePermissions.securityContext.seLinuxOptions Set SELinux options in container {}
volumePermissions.securityContext.runAsUser User ID for the init container 0

Metrics parameters

Name Description Value
metrics.enabled Start a side-car prometheus exporter false
metrics.image.registry Cassandra exporter image registry REGISTRY_NAME
metrics.image.repository Cassandra exporter image name REPOSITORY_NAME/cassandra-exporter
metrics.image.digest Cassandra exporter image digest in the way sha256:aa…. Please note this parameter, if set, will override the tag ""
metrics.image.pullPolicy image pull policy IfNotPresent
metrics.image.pullSecrets Specify docker-registry secret names as an array []
metrics.resourcesPreset Set container resources according to one common preset (allowed values: none, nano, micro, small, medium, large, xlarge, 2xlarge). This is ignored if metrics.resources is set (metrics.resources is recommended for production). nano
metrics.resources Set container requests and limits for different resources like CPU or memory (essential for production workloads) {}
metrics.readinessProbe.initialDelaySeconds Initial delay seconds for readinessProbe 20
metrics.readinessProbe.periodSeconds Period seconds for readinessProbe 10
metrics.readinessProbe.timeoutSeconds Timeout seconds for readinessProbe 45
metrics.readinessProbe.failureThreshold Failure threshold for readinessProbe 3
metrics.readinessProbe.successThreshold Success threshold for readinessProbe 1
metrics.extraVolumeMounts Optionally specify extra list of additional volumeMounts for cassandra-exporter container []
metrics.podAnnotations Metrics exporter pod Annotation and Labels {}
metrics.serviceMonitor.enabled If true, creates a Prometheus Operator ServiceMonitor (also requires metrics.enabled to be true) false
metrics.serviceMonitor.namespace Namespace in which Prometheus is running monitoring
metrics.serviceMonitor.interval Interval at which metrics should be scraped. ""
metrics.serviceMonitor.scrapeTimeout Timeout after which the scrape is ended ""
metrics.serviceMonitor.selector Prometheus instance selector labels {}
metrics.serviceMonitor.metricRelabelings Specify Metric Relabelings to add to the scrape endpoint []
metrics.serviceMonitor.relabelings RelabelConfigs to apply to samples before scraping []
metrics.serviceMonitor.honorLabels Specify honorLabels parameter to add the scrape endpoint false
metrics.serviceMonitor.jobLabel The name of the label on the target service to use as the job name in prometheus. ""
metrics.serviceMonitor.labels Used to pass Labels that are required by the installed Prometheus Operator {}
metrics.containerPorts.http HTTP Port on the Host and Container 8080
metrics.containerPorts.jmx JMX Port on the Host and Container 5555
metrics.hostPorts.http HTTP Port on the Host ""
metrics.hostPorts.jmx JMX Port on the Host ""
metrics.configuration Configure Cassandra-exporter with a custom config.yml file ""

TLS/SSL parameters

Name Description Value
tls.internodeEncryption Set internode encryption none
tls.clientEncryption Set client-server encryption false
tls.autoGenerated Generate automatically self-signed TLS certificates. Currently only supports PEM certificates false
tls.existingSecret Existing secret that contains Cassandra Keystore and truststore ""
tls.passwordsSecret Secret containing the Keystore and Truststore passwords if needed ""
tls.keystorePassword Password for the keystore, if needed. ""
tls.truststorePassword Password for the truststore, if needed. ""
tls.resourcesPreset Set container resources according to one common preset (allowed values: none, nano, micro, small, medium, large, xlarge, 2xlarge). This is ignored if tls.resources is set (tls.resources is recommended for production). nano
tls.resources Set container requests and limits for different resources like CPU or memory (essential for production workloads) {}
tls.certificatesSecret Secret with the TLS certificates. ""
tls.tlsEncryptionSecretName Secret with the encryption of the TLS certificates ""

The above parameters map to the env variables defined in bitnami/cassandra. For more information please refer to the bitnami/cassandra image documentation.

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

helm install my-release \
    --set dbUser.user=admin,dbUser.password=password \
    oci://REGISTRY_NAME/REPOSITORY_NAME/cassandra

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.

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

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

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

It’s necessary to set the dbUser.password parameter when upgrading for readiness/liveness probes to work properly. When you install this chart for the first time, some notes will be displayed providing the credentials you must use. Please note down the password and run the command below to upgrade your chart:

helm upgrade my-release oci://REGISTRY_NAME/REPOSITORY_NAME/cassandra --set dbUser.password=[PASSWORD]

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.

| Note: you need to substitute the placeholder [PASSWORD] with the value obtained in the installation notes.

To 12.0.0

Cassandra’s version was bumped to 5.0, the latest GA version. Users can upgrade from version 4 to 5.0 through an online upgrade, minimizing downtime for applications. Nevertheless, a backup creation prior to undergoing the upgrade process is recommended. Please, refer to the official guide for further information.

To 10.0.0

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 9.0.0

This major release renames several values in this chart and adds missing features, in order to be inline with the rest of assets in the Bitnami charts repository.

Affected values:

  • serviceMonitor.labels renamed as serviceMonitor.selector.
  • service.port renamed as service.ports.cql.
  • service.metricsPort renamed as service.ports.metrics.
  • service.nodePort renamed as service.nodePorts.cql.
  • updateStrategy changed from String type (previously default to ‘rollingUpdate’) to Object type, allowing users to configure other updateStrategy parameters, similar to other charts.
  • Removed value rollingUpdatePartition, now configured using updateStrategy setting updateStrategy.rollingUpdate.partition.

To 8.0.0

Cassandra’s version was bumped to 4.0, the new major considered LTS. Among other features, this release removes support for Thrift, which means that the following properties of the chart will no longer be available:

  • cluster.enableRPC
  • service.thriftPort
  • service.nodePorts.thrift
  • containerPorts.thrift

For this version, there have been intensive efforts from Apache to ensure that a safe cluster upgrade can be performed. Nevertheless, a backup creation prior to undergoing the upgrade process is recommended. Please, refer to the official guide for further information.

To 7.0.0

On November 13, 2020, Helm v2 support was formally finished, 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 6.0.0

  • Several parameters were renamed or disappeared in favor of new ones on this major version:
    • securityContext.* is deprecated in favor of podSecurityContext and containerSecurityContext.
    • Parameters prefixed with statefulset. were renamed removing the prefix. E.g. statefulset.rollingUpdatePartition -> renamed to rollingUpdatePartition.
    • cluster.replicaCount is renamed to replicaCount.
    • cluster.domain is renamed to clusterDomain.
  • Chart labels were adapted to follow the Helm charts standard labels.
  • This version also 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.

Consequences:

  • Backwards compatibility is not guaranteed. To upgrade to 6.0.0, install a new release of the Cassandra chart, and migrate the data from your previous release. To do so, create an snapshot of the database, and restore it on the new database. Check this guide for more information.

To 5.4.0

The minimumAvailable option has been renamed to minAvailable for consistency with other charts. This is not a breaking change as minimumAvailable never worked before because of an error in chart templates.

To 5.0.0

An issue in StatefulSet manifest of the 4.x chart series rendered chart upgrades to be broken. The 5.0.0 series fixes this issue. To upgrade to the 5.x series you need to manually delete the Cassandra StatefulSet before executing the helm upgrade command.

kubectl delete sts -l release=<RELEASE_NAME>
helm upgrade <RELEASE_NAME> ...

To 4.0.0

This release changes uses Bitnami Cassandra container 3.11.4-debian-9-r188, based on Bash.

To 2.0.0

This release make it possible to specify custom initialization scripts in both cql and sh files.

Breaking changes

  • startupCQL has been removed. Instead, for initializing the database, see this section.

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.

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