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Central is the resource that contains the RHACS application management interface and services. It handles data persistence, API interactions, and RHACS portal access. You can use the same Central instance to secure multiple OpenShift Container Platform or Kubernetes clusters.

You can install Central by using one of the following methods:

  • Install using Helm charts

  • Install using the roxctl CLI (do not use this method unless you have a specific installation need that requires using it)

Install Central using Helm charts

You can install Central using Helm charts without any customization, using the default values, or by using Helm charts with additional customizations of configuration parameters.

Install Central using Helm charts without customization

You can install RHACS on your Red Hat OpenShift cluster without any customizations. You must add the Helm chart repository and install the central-services Helm chart to install the centralized components of Central and Scanner.

Adding the Helm chart repository

Procedure
  • Add the RHACS charts repository.

    $ helm repo add rhacs https://mirror.openshift.com/pub/rhacs/charts/

The Helm repository for Red Hat Advanced Cluster Security for Kubernetes includes Helm charts for installing different components, including:

  • Central services Helm chart (central-services) for installing the centralized components (Central and Scanner).

    You deploy centralized components only once and you can monitor multiple separate clusters by using the same installation.

  • Secured Cluster Services Helm chart (secured-cluster-services) for installing the per-cluster (Sensor and Admission controller) and per-node (Collector) components.

    Deploy the per-cluster components into each cluster that you want to monitor and deploy the per-node components in all nodes that you want to monitor.

Verification
  • Run the following command to verify the added chart repository:

    $ helm search repo -l rhacs/

Installing the central-services Helm chart without customizations

Use the following instructions to install the central-services Helm chart to deploy the centralized components (Central and Scanner).

Procedure
  • Run the following command to install Central services and expose Central using a route:

    $ helm install -n stackrox \
      --create-namespace stackrox-central-services rhacs/central-services \
      --set imagePullSecrets.allowNone=true \
      --set central.exposure.route.enabled=true
  • Or, run the following command to install Central services and expose Central using a load balancer:

    $ helm install -n stackrox \
      --create-namespace stackrox-central-services rhacs/central-services \
      --set imagePullSecrets.allowNone=true \
      --set central.exposure.loadBalancer.enabled=true
  • Or, run the following command to install Central services and expose Central using port forward:

    $ helm install -n stackrox \
      --create-namespace stackrox-central-services rhacs/central-services \
      --set imagePullSecrets.allowNone=true

If you are installing Red Hat Advanced Cluster Security for Kubernetes in a cluster that requires a proxy to connect to external services, you must specify your proxy configuration by using the proxyConfig parameter. For example:

env:
  proxyConfig: |
    url: http://proxy.name:port
    username: username
    password: password
    excludes:
    - some.domain

The output of the installation command includes:

  • An automatically generated administrator password.

  • Instructions on storing all the configuration values.

  • Any warnings that Helm generates.

Install Central using Helm charts with customizations

You can install RHACS on your Red Hat OpenShift cluster with customizations by using Helm chart configuration parameters with the helm install and helm upgrade commands. You can specify these parameters by using the --set option or by creating YAML configuration files.

Create the following files for configuring the Helm chart for installing Red Hat Advanced Cluster Security for Kubernetes:

  • Public configuration file values-public.yaml: Use this file to save all non-sensitive configuration options.

  • Private configuration file values-private.yaml: Use this file to save all sensitive configuration options. Ensure that you store this file securely.

Private configuration file

This section lists the configurable parameters of the values-private.yaml file. There are no default values for these parameters.

Image pull secrets

The credentials that are required for pulling images from the registry depend on the following factors:

  • If you are using a custom registry, you must specify these parameters:

    • imagePullSecrets.username

    • imagePullSecrets.password

    • image.registry

  • If you do not use a username and password to log in to the custom registry, you must specify one of the following parameters:

    • imagePullSecrets.allowNone

    • imagePullSecrets.useExisting

    • imagePullSecrets.useFromDefaultServiceAccount

Parameter Description

imagePullSecrets.username

The username of the account that is used to log in to the registry.

imagePullSecrets.password

The password of the account that is used to log in to the registry.

imagePullSecrets.allowNone

Use true if you are using a custom registry and it allows pulling images without credentials.

imagePullSecrets.useExisting

A comma-separated list of secrets as values. For example, secret1, secret2, secretN. Use this option if you have already created pre-existing image pull secrets with the given name in the target namespace.

imagePullSecrets.useFromDefaultServiceAccount

Use true if you have already configured the default service account in the target namespace with sufficiently scoped image pull secrets.

Proxy configuration

If you are installing Red Hat Advanced Cluster Security for Kubernetes in a cluster that requires a proxy to connect to external services, you must specify your proxy configuration by using the proxyConfig parameter. For example:

env:
  proxyConfig: |
    url: http://proxy.name:port
    username: username
    password: password
    excludes:
    - some.domain
Parameter Description

env.proxyConfig

Your proxy configuration.

Central

Configurable parameters for Central.

For a new installation, you can skip the following parameters:

  • central.jwtSigner.key

  • central.serviceTLS.cert

  • central.serviceTLS.key

  • central.adminPassword.value

  • central.adminPassword.htpasswd

  • When you do not specify values for these parameters the Helm chart autogenerates values for them.

  • If you want to modify these values you can use the helm upgrade command and specify the values using the --set option.

For setting the administrator password, you can only use either central.adminPassword.value or central.adminPassword.htpasswd, but not both.

Parameter Description

central.jwtSigner.key

A private key which Red Hat Advanced Cluster Security for Kubernetes should use for signing JSON web tokens (JWTs) for authentication.

central.serviceTLS.cert

An internal certificate that the Central service should use for deploying Central.

central.serviceTLS.key

The private key of the internal certificate that the Central service should use.

central.defaultTLS.cert

The user-facing certificate that Central should use. Red Hat Advanced Cluster Security for Kubernetes uses this certificate for RHACS portal.

  • For a new installation, you must provide a certificate, otherwise, Red Hat Advanced Cluster Security for Kubernetes installs Central by using a self-signed certificate.

  • If you are upgrading, Red Hat Advanced Cluster Security for Kubernetes uses the existing certificate and its key.

central.defaultTLS.key

The private key of the user-facing certificate that Central should use.

  • For a new installation, you must provide the private key, otherwise, Red Hat Advanced Cluster Security for Kubernetes installs Central by using a self-signed certificate.

  • If you are upgrading, Red Hat Advanced Cluster Security for Kubernetes uses the existing certificate and its key.

central.adminPassword.value

Administrator password for logging into Red Hat Advanced Cluster Security for Kubernetes.

central.adminPassword.htpasswd

Administrator password for logging into Red Hat Advanced Cluster Security for Kubernetes. This password is stored in hashed format using bcrypt.

If you are using central.adminPassword.htpasswd parameter, you must use a bcrypt encoded password hash. You can run the command htpasswd -nB admin to generate a password hash. For example,

htpasswd: |
  admin:<bcrypt-hash>
Scanner

Configurable parameters for Scanner.

For a new installation, you can skip the following parameters and the Helm chart autogenerates values for them. Otherwise, if you are upgrading to a new version, specify the values for the following parameters:

  • scanner.dbPassword.value

  • scanner.serviceTLS.cert

  • scanner.serviceTLS.key

  • scanner.dbServiceTLS.cert

  • scanner.dbServiceTLS.key

Parameter Description

scanner.dbPassword.value

The password to use for authentication with Scanner database. Do not modify this parameter because Red Hat Advanced Cluster Security for Kubernetes automatically creates and uses its value internally.

scanner.serviceTLS.cert

An internal certificate that the Scanner service should use for deploying Scanner.

scanner.serviceTLS.key

The private key of the internal certificate that the Scanner service should use.

scanner.dbServiceTLS.cert

An internal certificate that the Scanner-db service should use for deploying Scanner database.

scanner.dbServiceTLS.key

The private key of the internal certificate that the Scanner-db service should use.

Public configuration file

This section lists the configurable parameters of the values-public.yaml file.

Image pull secrets

Image pull secrets are the credentials required for pulling images from your registry.

Parameter Description

imagePullSecrets.allowNone

Use true if you are using a custom registry and it allows pulling images without credentials.

imagePullSecrets.useExisting

A comma-seprated list of secrets as values. For example, secret1, secret2. Use this option if you have already created pre-existing image pull secrets with the given name in the target namespace.

imagePullSecrets.useFromDefaultServiceAccount

Use true if you have already configured the default service account in the target namespace with sufficiently scoped image pull secrets.

Image

Image declares the configuration to set up the main registry, which the Helm chart uses to resolve images for the central.image, scanner.image, and scanner.dbImage parameters.

Parameter Description

image.registry

Address of your image registry. Either use a hostname, such as registry.redhat.io, or a remote registry hostname, such as us.gcr.io/stackrox-mirror.

Environment variables

Red Hat Advanced Cluster Security for Kubernetes automatically detects your cluster environment and sets values for env.openshift, env.istio, and env.platform. Only set these values to override the automatic cluster environment detection.

Parameter Description

env.openshift

Use true for installing on an OpenShift Container Platform cluster and overriding automatic cluster environment detection.

env.istio

Use true for installing on an Istio enabled cluster and overriding automatic cluster environment detection.

env.platform

The platform on which you are installing Red Hat Advanced Cluster Security for Kubernetes. Set its value to default or gke to specify cluster platform and override automatic cluster environment detection.

env.offlineMode

Use true to use Red Hat Advanced Cluster Security for Kubernetes in offline mode.

Additional trusted certificate authorities

The Red Hat Advanced Cluster Security for Kubernetes automatically references the system root certificates to trust. When Central or Scanner must reach out to services that use certificates issued by an authority in your organization or a globally trusted partner organization, you can add trust for these services by specifying the root certificate authority to trust by using the following parameter:

Parameter Description

additionalCAs.<certificate_name>

Specify the PEM encoded certificate of the root certificate authority to trust.

Central

Configurable parameters for Central.

  • You must specify a persistent storage option as either hostPath or persistentVolumeClaim.

  • For exposing Central deployment for external access. You must specify one parameter, either central.exposure.loadBalancer, central.exposure.nodePort, or central.exposure.route. When you do not specify any value for these parameters, you must manually expose Central or access it by using port-forwarding.

Parameter Description

central.disableTelemetry

Use true to disable online telemetry data collection.

central.endpointsConfig

The endpoint configuration options for Central.

central.nodeSelector

If the node selector selects tainted nodes, use this parameter to specify a taint toleration key, value, and effect for Central. This parameter is mainly used for infrastructure nodes.

central.tolerations

If the node selector selects tainted nodes, use this parameter to specify a taint toleration key, value, and effect for Central. This parameter is mainly used for infrastructure nodes.

central.exposeMonitoring

Specify true to expose Prometheus metrics endpoint for Central on port number 9090.

central.image.registry

A custom registry that overrides the global image.registry parameter for the Central image.

central.image.name

The custom image name that overrides the default Central image name (main).

central.image.tag

The custom image tag that overrides the default tag for Central image. If you specify you own image tag during a new installation, you must manually increment this tag when you to upgrade to a new version by running the helm upgrade command. If you mirror Central images in your own registry, do not modify the original image tags.

central.image.fullRef

Full reference including registry address, image name, and image tag for the Central image. Setting a value for this parameter overrides the central.image.registry, central.image.name, and central.image.tag parameters.

central.resources.requests.memory

The memory request for Central to override the default value.

central.resources.requests.cpu

The CPU request for Central to override the default value.

central.resources.limits.memory

The memory limit for Central to override the default value.

central.resources.limits.cpu

The CPU limit for Central to override the default value.

central.persistence.hostPath

The path on the node where Red Hat Advanced Cluster Security for Kubernetes should create a database volume. Red Hat does not recommend using this option.

central.persistence.persistentVolumeClaim.claimName

The name of the persistent volume claim (PVC) you are using.

central.persistence.persistentVolumeClaim.createClaim

Use true to create a new persistent volume claim, or false to use an existing claim.

central.persistence.persistentVolumeClaim.size

The size (in GiB) of the persistent volume managed by the specified claim.

central.exposure.loadBalancer.enabled

Use true to expose Central by using a load balancer.

central.exposure.loadBalancer.port

The port number on which to expose Central. The default port number is 443.

central.exposure.nodePort.enabled

Use true to expose Central by using the node port service.

central.exposure.nodePort.port

The port number on which to expose Central. When you skip this parameter, OpenShift Container Platform automatically assigns a port number. Red Hat recommends that you do not specify a port number if you are exposing Red Hat Advanced Cluster Security for Kubernetes by using a node port.

central.exposure.route.enabled

Use true to expose Central by using a route. This parameter is only available for OpenShift Container Platform clusters.

Scanner

Configurable parameters for Scanner.

Parameter Description

scanner.disable

Use true to install Red Hat Advanced Cluster Security for Kubernetes without Scanner. When you use it with the helm upgrade command, Helm removes existing Scanner deployment.

scanner.replicas

The number of replicas to create for the Scanner deployment. When you use it with the scanner.autoscaling parameter, this value sets the initial number of replicas.

scanner.logLevel

Configure the log level for Scanner. Red Hat recommends that you not change the log level’s default value (INFO).

scanner.nodeSelector

Specify a node selector label as label-key: label-value to force Scanner to only schedule on nodes with the specified label.

scanner.tolerations

If the node selector selects tainted nodes, use this parameter to specify a taint toleration key, value, and effect for Scanner. This parameter is mainly used for infrastructure nodes.

scanner.autoscaling.disable

Use true to disable autoscaling for Scanner deployment. When you disable autoscaling, the minReplicas and maxReplicas parameters do not have any effect.

scanner.autoscaling.minReplicas

The minimum number of replicas for autoscaling.

scanner.autoscaling.maxReplicas

The maximum number of replicas for autoscaling.

scanner.resources.requests.memory

The memory request for Scanner to override the default value.

scanner.resources.requests.cpu

The CPU request for Scanner to override the default value.

scanner.resources.limits.memory

The memory limit for Scanner to override the default value.

scanner.resources.limits.cpu

The CPU limit for Scanner to override the default value.

scanner.dbResources.requests.memory

The memory request for Scanner database deployment to override the default values.

scanner.dbResources.requests.cpu

The CPU request for Scanner database deployment to override the default values.

scanner.dbResources.limits.memory

The memory limit for Scanner database deployment to override the default values.

scanner.dbResources.limits.cpu

The CPU limit for Scanner database deployment to override the default values.

scanner.image.registry

A custom registry for the Scanner image.

scanner.image.name

The custom image name that overrides the default Scanner image name (scanner).

scanner.dbImage.registry

A custom registry for the Scanner DB image.

scanner.dbImage.name

The custom image name that overrides the default Scanner DB image name (scanner-db).

scanner.dbNodeSelector

Specify a node selector label as label-key: label-value to force Scanner DB to only schedule on nodes with the specified label.

scanner.dbTolerations

If the node selector selects tainted nodes, use this parameter to specify a taint toleration key, value, and effect for Scanner DB. This parameter is mainly used for infrastructure nodes.

Customization

Use these parameters to specify additional attributes for all objects that Red Hat Advanced Cluster Security for Kubernetes creates.

Parameter Description

customize.labels

A custom label to attach to all objects.

customize.annotations

A custom annotation to attach to all objects.

customize.podLabels

A custom label to attach to all deployments.

customize.podAnnotations

A custom annotation to attach to all deployments.

customize.envVars

A custom environment variable for all containers in all objects.

customize.central.labels

A custom label to attach to all objects that Central creates.

customize.central.annotations

A custom annotation to attach to all objects that Central creates.

customize.central.podLabels

A custom label to attach to all Central deployments.

customize.central.podAnnotations

A custom annotation to attach to all Central deployments.

customize.central.envVars

A custom environment variable for all Central containers.

customize.scanner.labels

A custom label to attach to all objects that Scanner creates.

customize.scanner.annotations

A custom annotation to attach to all objects that Scanner creates.

customize.scanner.podLabels

A custom label to attach to all Scanner deployments.

customize.scanner.podAnnotations

A custom annotation to attach to all Scanner deployments.

customize.scanner.envVars

A custom environment variable for all Scanner containers.

customize.scanner-db.labels

A custom label to attach to all objects that Scanner DB creates.

customize.scanner-db.annotations

A custom annotation to attach to all objects that Scanner DB creates.

customize.scanner-db.podLabels

A custom label to attach to all Scanner DB deployments.

customize.scanner-db.podAnnotations

A custom annotation to attach to all Scanner DB deployments.

customize.scanner-db.envVars

A custom environment variable for all Scanner DB containers.

You can also use:

  • the customize.other.service/*.labels and the customize.other.service/*.annotations parameters, to specify labels and annotations for all objects.

  • or, provide a specific service name, for example, customize.other.service/central-loadbalancer.labels and customize.other.service/central-loadbalancer.annotations as parameters and set their value.

Advanced customization

The parameters specified in this section are for information only. Red Hat does not support Red Hat Advanced Cluster Security for Kubernetes instances with modified namespace and release names.

Parameter Description

allowNonstandardNamespace

Use true to deploy Red Hat Advanced Cluster Security for Kubernetes into a namespace other than the default namespace stackrox.

allowNonstandardReleaseName

Use true to deploy Red Hat Advanced Cluster Security for Kubernetes with a release name other than the default stackrox-central-services.

Installing the central-services Helm chart

After you configure the values-public.yaml and values-private.yaml files, install the central-services Helm chart to deploy the centralized components (Central and Scanner).

Procedure
  • Run the following command:

    $ helm install -n stackrox --create-namespace \
      stackrox-central-services rhacs/central-services \
      -f <path_to_values_public.yaml> -f <path_to_values_private.yaml> (1)
    1 Use the -f option to specify the paths for your YAML configuration files.

Changing configuration options after deploying the central-services Helm chart

You can make changes to any configuration options after you have deployed the central-services Helm chart.

Procedure
  1. Update the values-public.yaml and values-private.yaml configuration files with new values.

  2. Run the helm upgrade command and specify the configuration files using the -f option:

    $ helm upgrade -n stackrox \
      stackrox-central-services rhacs/central-services \
      -f <path_to_values_public.yaml> \
      -f <path_to_values_private.yaml>

    You can also specify configuration values using the --set or --set-file parameters. However, these options are not saved, and it requires you to manually specify all the options again whenever you make changes.

Install Central using the roxctl CLI

For production environments, Red Hat recommends using the Operator or Helm charts to install RHACS. Do not use the roxctl install method unless you have a specific installation need that requires using this method.

Installing the roxctl CLI

To install Red Hat Advanced Cluster Security for Kubernetes you must install the roxctl CLI by downloading the binary. You can install roxctl on Linux, Windows, or macOS.

Installing the roxctl CLI on Linux

You can install the roxctl CLI binary on Linux by using the following procedure.

Procedure
  1. Download the latest version of the roxctl CLI:

    $ curl -O https://mirror.openshift.com/pub/rhacs/assets/3.73.1/bin/Linux/roxctl
  2. Make the roxctl binary executable:

    $ chmod +x roxctl
  3. Place the roxctl binary in a directory that is on your PATH:

    To check your PATH, execute the following command:

    $ echo $PATH
Verification
  • Verify the roxctl version you have installed:

    $ roxctl version

Installing the roxctl CLI on macOS

You can install the roxctl CLI binary on macOS by using the following procedure.

Procedure
  1. Download the latest version of the roxctl CLI:

    $ curl -O https://mirror.openshift.com/pub/rhacs/assets/3.73.1/bin/Darwin/roxctl
  2. Remove all extended attributes from the binary:

    $ xattr -c roxctl
  3. Make the roxctl binary executable:

    $ chmod +x roxctl
  4. Place the roxctl binary in a directory that is on your PATH:

    To check your PATH, execute the following command:

    $ echo $PATH
Verification
  • Verify the roxctl version you have installed:

    $ roxctl version

Installing the roxctl CLI on Windows

You can install the roxctl CLI binary on Windows by using the following procedure.

Procedure
  • Download the latest version of the roxctl CLI:

    $ curl -O https://mirror.openshift.com/pub/rhacs/assets/3.73.1/bin/Windows/roxctl.exe
Verification
  • Verify the roxctl version you have installed:

    $ roxctl version

Using the interactive installer

Use the interactive installer to generate the required secrets, deployment configurations, and deployment scripts for your environment.

Procedure
  1. Run the interactive install command:

    $ roxctl central generate interactive
  2. Press Enter to accept the default value for a prompt or enter custom values as required.

    Enter path to the backup bundle from which to restore keys and certificates (optional):
    Enter PEM cert bundle file (optional): (1)
    Enter administrator password (default: autogenerated):
    Enter orchestrator (k8s, openshift): openshift
    Enter the directory to output the deployment bundle to (default: "central-bundle"):
    Enter the OpenShift major version (3 or 4) to deploy on (default: "0"): 4
    Enter Istio version when deploying into an Istio-enabled cluster (leave empty when not running Istio) (optional):
    Enter the method of exposing Central (route, lb, np, none) (default: "none"): route (2)
    Enter main image to use (default: "stackrox.io/main:3.0.61.1"):
    Enter whether to run StackRox in offline mode, which avoids reaching out to the Internet (default: "false"):
    Enter whether to enable telemetry (default: "true"):
    Enter the deployment tool to use (kubectl, helm, helm-values) (default: "kubectl"):
    Enter Scanner DB image to use (default: "stackrox.io/scanner-db:2.15.2"):
    Enter Scanner image to use (default: "stackrox.io/scanner:2.15.2"):
    Enter Central volume type (hostpath, pvc): pvc (3)
    Enter external volume name (default: "stackrox-db"):
    Enter external volume size in Gi (default: "100"):
    Enter storage class name (optional if you have a default StorageClass configured):
    1 If you want to add a custom TLS certificate, provide the file path for the PEM-encoded certificate. When you specify a custom certificate the interactive installer also prompts you to provide a PEM private key for the custom certificate you are using.
    2 To use the RHACS portal, you must expose Central by using a route, a load balancer or a node port.
    3 If you plan to install Red Hat Advanced Cluster Security for Kubernetes on OpenShift Container Platform with a hostPath volume, you must modify the SELinux policy.

    On OpenShift Container Platform, for using a hostPath volume, you must modify the SELinux policy to allow access to the directory, which the host and the container share. It is because SELinux blocks directory sharing by default. To modify the SELinux policy, run the following command:

    $ sudo chcon -Rt svirt_sandbox_file_t <full_volume_path>

    However, Red Hat does not recommend modifying the SELinux policy, instead use PVC when installing on OpenShift Container Platform.

On completion, the installer creates a folder named central-bundle, which contains the necessary YAML manifests and scripts to deploy Central. In addition, it shows on-screen instructions for the scripts you need to run to deploy additional trusted certificate authorities, Central and Scanner, and the authentication instructions for logging into the RHACS portal along with the autogenerated password if you did not provide one when answering the prompts.

Running the Central installation scripts

After you run the interactive installer, you can run the setup.sh script to install Central.

Procedure
  1. Run the setup.sh script to configure image registry access:

    $ ./central-bundle/central/scripts/setup.sh
  2. Create the necessary resources:

    $ oc create -R -f central-bundle/central
  3. Check the deployment progress:

    $ oc get pod -n stackrox -w
  4. After Central is running, find the RHACS portal IP address and open it in your browser. Depending on the exposure method you selected when answering the prompts, use one of the following methods to get the IP address.

    Exposure method Command Address Example

    Route

    oc -n stackrox get route central

    The address under the HOST/PORT column in the output

    https://central-stackrox.example.route

    Node Port

    oc get node -owide && oc -n stackrox get svc central-loadbalancer

    IP or hostname of any node, on the port shown for the service

    https://198.51.100.0:31489

    Load Balancer

    oc -n stackrox get svc central-loadbalancer

    EXTERNAL-IP or hostname shown for the service, on port 443

    https://192.0.2.0

    None

    central-bundle/central/scripts/port-forward.sh 8443

    https://localhost:8443

    https://localhost:8443

If you have selected autogenerated password during the interactive install, you can run the following command to see it for logging into Central:

$ cat central-bundle/password