bitnamicharts/sonarqube repository overview

⁠Bitnami Secure Images Helm chart for SonarQube™

SonarQube™ is an open source quality management platform that analyzes and measures code's technical quality. It enables developers to detect code issues, vulnerabilities, and bugs in early stages.

Overview of SonarQube™⁠

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. SonarQube is a registered trademark of SonarSource SA.

⁠TL;DR

helm install my-release oci://registry-1.docker.io/bitnamicharts/sonarqube

⁠Why use Bitnami Secure Images?

Those are hardened, minimal CVE images built and maintained by Bitnami. Bitnami Secure Images are based on the cloud-optimized, security-hardened enterprise OS Photon Linux⁠. Why choose BSI images?

• Hardened secure images of popular open source software with Near-Zero Vulnerabilities
• Vulnerability Triage & Prioritization with VEX Statements, KEV and EPSS Scores
• Compliance focus with FIPS, STIG, and air-gap options, including secure bill of materials (SBOM)
• Software supply chain provenance attestation through in-toto
• First class support for the internet’s favorite Helm charts

Each image comes with valuable security metadata. You can view the metadata in our public catalog here⁠. Note: Some data is only available with commercial subscriptions to BSI⁠.

If you are looking for our previous generation of images based on Debian Linux, please see the Bitnami Legacy registry⁠.

⁠Introduction

This chart bootstraps an SonarQube™⁠ cluster on a Kubernetes⁠ cluster using the Helm⁠ package manager.

⁠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/sonarqube

The command deploys SonarQube™ on the Kubernetes cluster in the default configuration. The Parameters⁠ section lists the parameters that can be configured during installation.

⁠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 resourcesPreset is discouraged as it may not fully adapt to your specific needs. Find more information on container resource management in the official Kubernetes documentation⁠.

⁠Prometheus metrics

This chart can be integrated with Prometheus by setting metrics.enabled to true. This will deploy a sidecar container with jmx_exporter⁠ in all pods and a metrics service, which can be configured under the metrics.service section. This metrics service will have the necessary annotations to be automatically scraped by Prometheus.

⁠Prometheus requirements

It is necessary to have a working installation of Prometheus or Prometheus Operator for the integration to work. Install the Bitnami Prometheus helm chart⁠ or the Bitnami Kube Prometheus helm chart⁠ to easily have a working Prometheus in your cluster.

⁠Integration with Prometheus Operator

The chart can deploy ServiceMonitor objects for integration with Prometheus Operator installations. To do so, set the value metrics.serviceMonitor.enabled=true. Ensure that the Prometheus Operator CustomResourceDefinitions are installed in the cluster or it will fail with the following error:

no matches for kind "ServiceMonitor" in version "monitoring.coreos.com/v1"

Install the Bitnami Kube Prometheus helm chart⁠ for having the necessary CRDs and the Prometheus Operator.

⁠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.

⁠Default kernel settings

Currently, SonarQube™ requires some changes in the kernel of the host machine to work as expected. If those values are not set in the underlying operating system, the SonarQube™ containers fail to boot with ERROR messages. More information about these requirements can be found in the links below:

• File Descriptor requirements⁠
• Virtual memory requirements⁠

This chart uses a privileged initContainer to change those settings in the Kernel by running: sysctl -w vm.max_map_count=262144 && sysctl -w fs.file-max=65536. You can disable the initContainer using the sysctl.enabled=false parameter.

⁠External database support

You may want to have SonarQube™ connect to an external database rather than installing one inside your cluster. Typical reasons for this are to use a managed database service, or to share a common database server for all your applications. To achieve this, set the postgresql.enabled parameter to false and specify the credentials for the external database using the externalDatabase.* parameters. Here is an example:

postgresql.enabled=false
externalDatabase.host=myexternalhost
externalDatabase.user=myuser
externalDatabase.password=mypassword
externalDatabase.database=mydatabase
externalDatabase.port=5432

⁠Ingress

This chart provides support for Ingress resources. If you have an ingress controller installed on your cluster, such as nginx-ingress-controller⁠ or contour⁠ you can utilize the ingress controller to serve your application.To enable Ingress integration, set ingress.enabled to true.

The most common scenario is to have one host name mapped to the deployment. In this case, the ingress.hostname property can be used to set the host name. The ingress.tls parameter can be used to add the TLS configuration for this host.

However, it is also possible to have more than one host. To facilitate this, the ingress.extraHosts parameter (if available) can be set with the host names specified as an array. The ingress.extraTLS parameter (if available) can also be used to add the TLS configuration for extra hosts.

Adding the TLS parameter (where available) will cause the chart to generate HTTPS URLs, and the application will be available on port 443. The actual TLS secrets do not have to be generated by this chart. However, if TLS is enabled, the Ingress record will not work until the TLS secret exists.

Learn more about Ingress controllers⁠.

⁠Securing traffic using TLS

This chart facilitates the creation of TLS secrets for use with the Ingress controller (although this is not mandatory). There are several common use cases:

• Generate certificate secrets based on chart parameters.
• Enable externally generated certificates.
• Manage application certificates via an external service (like cert-manager⁠).
• Create self-signed certificates within the chart (if supported).

In the first two cases, a certificate and a key are needed. Files are expected in .pem format.

Here is an example of a certificate file:

-----BEGIN CERTIFICATE-----
MIID6TCCAtGgAwIBAgIJAIaCwivkeB5EMA0GCSqGSIb3DQEBCwUAMFYxCzAJBgNV
...
jScrvkiBO65F46KioCL9h5tDvomdU1aqpI/CBzhvZn1c0ZTf87tGQR8NK7v7
-----END CERTIFICATE-----

Here is an example of a certificate key:

-----BEGIN RSA PRIVATE KEY-----
MIIEogIBAAKCAQEAvLYcyu8f3skuRyUgeeNpeDvYBCDcgq+LsWap6zbX5f8oLqp4
...
wrj2wDbCDCFmfqnSJ+dKI3vFLlEz44sAV8jX/kd4Y6ZTQhlLbYc=
-----END RSA PRIVATE KEY-----

• If using Helm to manage the certificates based on the parameters, copy these values into the certificate and key values for a given *.ingress.secrets entry.
• If managing TLS secrets separately, it is necessary to create a TLS secret with name INGRESS_HOSTNAME-tls (where INGRESS_HOSTNAME is a placeholder to be replaced with the hostname you set using the *.ingress.hostname parameter).
• If your cluster has a cert-manager⁠ add-on to automate the management and issuance of TLS certificates, add to *.ingress.annotations the corresponding ones⁠ for cert-manager.
• If using self-signed certificates created by Helm, set both *.ingress.tls and *.ingress.selfSigned to true.

⁠Additional environment variables

In case you want to add extra environment variables (useful for advanced operations like custom init scripts), you can use the extraEnvVars property.

sonarqube:
  extraEnvVars:
    - name: LOG_LEVEL
      value: error

Alternatively, you can use a ConfigMap or a Secret with the environment variables. To do so, use the extraEnvVarsCM or the extraEnvVarsSecret values.

⁠Enable metrics

The chart can optionally start a sidecar exporter for Prometheus⁠ to expose JMX metrics. The metrics endpoint is exposed in a separate service.

To start the sidecar Prometheus exporter, set the metrics.jmx.enabled parameter to true when deploying the chart. Refer to the chart parameters for the default port number.

Metrics can be scraped from within the cluster using any of the following approaches:

• Adding the required annotations in the service for Prometheus to discover the metrics endpoints, as in the example below:

  metrics:
    jmx:
      service:
        annotations:
          prometheus.io/scrape: "true"
          prometheus.io/port: "10443"
          prometheus.io/path: "/"
  

  Copy

• Creating a ServiceMonitor (when the Prometheus Operator is available in the cluster). You can do this setting the metrics.serviceMonitor.enabled parameter to true when deploying the chart.

• Using something similar to the example Prometheus scrape configuration⁠.

If metrics are to be scraped from outside the cluster, the Kubernetes API proxy can be utilized to access the endpoint.

⁠Sidecars

If additional containers are needed in the same pod as SonarQube™ (such as additional metrics or logging exporters), they can be defined using the sidecars parameter.

sidecars:
- name: your-image-name
  image: your-image
  imagePullPolicy: Always
  ports:
  - name: portname
    containerPort: 1234

If these sidecars export extra ports, extra port definitions can be added using the service.extraPorts parameter (where available), as shown in the example below:

service:
  extraPorts:
  - name: extraPort
    port: 11311
    targetPort: 11311

If additional init containers are needed in the same pod, they can be defined using the initContainers parameter. Here is an example:

initContainers:
  - name: your-image-name
    image: your-image
    imagePullPolicy: Always
    ports:
      - name: portname
        containerPort: 1234

Learn more about sidecar containers⁠ and init containers⁠.

⁠Pod affinity

This chart allows you to set your custom affinity using the affinity parameter. Find more information about Pod affinity in the kubernetes documentation⁠.

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

⁠Backup and restore

To back up and restore Helm chart deployments on Kubernetes, you need to back up the persistent volumes from the source deployment and attach them to a new deployment using Velero⁠, a Kubernetes backup/restore tool. Find the instructions for using Velero in this guide⁠.

⁠Persistence

The Bitnami SonarQube™⁠ image stores the SonarQube™ data and configurations at the /bitnami/sonarqube path of the container. Persistent Volume Claims are used to keep the data across deployments.

⁠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.

By default, the chart is configured to use Kubernetes Security Context to automatically change the ownership of the volume. However, this feature does not work in all Kubernetes distributions.

As an alternative, this chart supports using an initContainer to change the ownership of the volume before mounting it in the final destination. You can enable this initContainer by setting volumePermissions.enabled to true.

⁠Parameters

⁠Global parameters

⁠Common parameters

⁠SonarQube(TM) Image parameters

⁠SonarQube(TM) Configuration parameters

Note: the README for this chart is longer than the DockerHub length limit of 25000, so it has been trimmed. The full README can be found at https://github.com/bitnami/charts/blob/main/bitnami/sonarqube/README.md⁠