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Backing up the Central database

You can back up the Central database and use that backup for rolling back from a failed upgrade or data restoration in the case of an infrastructure disaster.

Prerequisites
  • You must have an API token with read permission for all resources of Red Hat Advanced Cluster Security for Kubernetes. The Analyst system role has read permissions for all resources.

  • You have installed the roxctl CLI.

  • You have configured the ROX_API_TOKEN and the ROX_CENTRAL_ADDRESS environment variables.

Procedure
  • Run the backup command:

    $ roxctl -e "$ROX_CENTRAL_ADDRESS" central backup

Upgrading the roxctl CLI

To upgrade the roxctl CLI to the latest version you must uninstall the existing version of roxctl CLI and then install the latest version of the roxctl CLI.

Uninstalling the roxctl CLI

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

Procedure
  • Find and delete the roxctl binary:

    $ ROXPATH=$(which roxctl) && rm -f $ROXPATH (1)
    1 Depending on your environment, you might need administrator rights to delete the roxctl binary.

Installing the roxctl CLI on Linux

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

roxctl CLI for Linux is available for amd64, ppc64le, and s390x architectures.

Procedure
  1. Determine the roxctl architecture for the target operating system:

    $ arch="$(uname -m | sed "s/x86_64//")"; arch="${arch:+-$arch}"
  2. Download the roxctl CLI:

    $ curl -f -o roxctl "https://mirror.openshift.com/pub/rhacs/assets/4.4.0/bin/Linux/roxctl${arch}"
  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 macOS

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

roxctl CLI for macOS is available for the amd64 architecture.

Procedure
  1. Download the roxctl CLI:

    $ curl -f -O https://mirror.openshift.com/pub/rhacs/assets/4.4.0/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.

roxctl CLI for Windows is available for the amd64 architecture.

Procedure
  • Download the roxctl CLI:

    $ curl -f -O https://mirror.openshift.com/pub/rhacs/assets/4.4.0/bin/Windows/roxctl.exe
Verification
  • Verify the roxctl version you have installed:

    $ roxctl version

Generating Central database provisioning bundle

Before upgrading Central you must first generate a database provisioning bundle. This bundle is a tar archive that has a README file, a few YAML configuration files, and some scripts that aid in the installation process.

Prerequisites
  • You must have an API token with the Admin role.

  • You must have installed the roxctl CLI.

Procedure
  1. Set the ROX_API_TOKEN and the ROX_CENTRAL_ADDRESS environment variables:

    $ export ROX_API_TOKEN=<api_token>
    $ export ROX_CENTRAL_ADDRESS=<address>:<port_number>
  2. Run the central db generate command:

    $ roxctl -e $ROX_CENTRAL_ADDRESS central db generate \
      <cluster_type> \ (1)
      <storage> \ (2)
      --output-dir <bundle_dir> \ (3)
      --central-db-image registry.redhat.io/advanced-cluster-security/rhacs-central-db-rhel8:4.4.0
    1 cluster-type is the type of your cluster, specify k8s for Kubernetes and openshift for OpenShift Container Platform.
    2 For storage, specify hostpath or pvc. If you use pvc you can use additional options to specify volume name, size, and storage class. Run $ roxctl central db generate openshift pvc -h for more details.
    3 For bundle-dir specify the path where you want to save the generated provisioning bundle.
Next Step
  • Use the Central DB provisioning bundle to create additional resources.

Creating resources by using the Central DB provisioning bundle

Before you upgrade the Central cluster, you must use the Central DB provisioning bundle to create additional resources that the Central cluster requires. This bundle is a tar archive that has a README file, a few YAML configuration files, and some scripts that aid in the installation process.

Prerequisites
  • You must have generated a Central DB provisioning bundle.

  • You must have extracted the tar archive bundle.

Procedure
  1. Open the extracted bundle directory and run the setup script:

    $ ./scripts/setup.sh
  2. Run the deploy-central-db script:

    $ ./deploy-central-db.sh

Upgrading the Central cluster

After you have created a backup of the Central database and generated the necessary resources by using the provisioning bundle, the next step is to upgrade the Central cluster. This process involves upgrading Central and Scanner.

Upgrading Central

You can update Central to the latest version by downloading and deploying the updated images.

Procedure
  • Run the following command to update the Central image:

    $ oc -n stackrox set image deploy/central central=registry.redhat.io/advanced-cluster-security/rhacs-main-rhel8:4.4.0 (1)
    1 If you use Kubernetes, enter kubectl instead of oc.
Verification
  • Verify that the new pods have deployed:

    $ oc get deploy -n stackrox -o wide
    $ oc get pod -n stackrox --watch

Editing the GOMEMLIMIT environment variable for the Central deployment

Upgrading to version 4.4 requires that you manually replace the GOMEMLIMIT environment variable with the ROX_MEMLIMIT environment variable. You must edit this variable for each deployment.

Procedure
  1. Run the following command to edit the variable for the Central deployment:

    $ oc -n stackrox edit deploy/central (1)
    1 If you use Kubernetes, enter kubectl instead of oc.
  2. Replace the GOMEMLIMIT variable with ROX_MEMLIMIT.

  3. Save the file.

Upgrading Scanner

You can update Scanner to the latest version by downloading and deploying the updated images.

Procedure
  • Run the following command to update the Scanner image:

    $ oc -n stackrox set image deploy/scanner scanner=registry.redhat.io/advanced-cluster-security/rhacs-scanner-rhel8:4.4.0 (1)
    1 If you use Kubernetes, enter kubectl instead of oc.
Verification
  • Verify that the new pods have deployed:

    $ oc get deploy -n stackrox -o wide
    $ oc get pod -n stackrox --watch

Editing the GOMEMLIMIT environment variable for the Scanner deployment

Upgrading to version 4.4 requires that you manually replace the GOMEMLIMIT environment variable with the ROX_MEMLIMIT environment variable. You must edit this variable for each deployment.

Procedure
  1. Run the following command to edit the variable for the Scanner deployment:

    $ oc -n stackrox edit deploy/scanner (1)
    1 If you use Kubernetes, enter kubectl instead of oc.
  2. Replace the GOMEMLIMIT variable with ROX_MEMLIMIT.

  3. Save the file.

Verifying the Central cluster upgrade

After you have upgraded both Central and Scanner, verify that the Central cluster upgrade is complete.

Procedure
  • Check the Central logs by running the following command:

    $ oc logs -n stackrox deploy/central -c central (1)
    1 If you use Kubernetes, enter kubectl instead of oc.
Sample output of a successful upgrade
No database restore directory found (this is not an error).
Migrator: 2023/04/19 17:58:54: starting DB compaction
Migrator: 2023/04/19 17:58:54: Free fraction of 0.0391 (40960/1048576) is < 0.7500. Will not compact
badger 2023/04/19 17:58:54 INFO: All 1 tables opened in 2ms
badger 2023/04/19 17:58:55 INFO: Replaying file id: 0 at offset: 846357
badger 2023/04/19 17:58:55 INFO: Replay took: 50.324µs
badger 2023/04/19 17:58:55 DEBUG: Value log discard stats empty
Migrator: 2023/04/19 17:58:55: DB is up to date. Nothing to do here.
badger 2023/04/19 17:58:55 INFO: Got compaction priority: {level:0 score:1.73 dropPrefix:[]}
version: 2023/04/19 17:58:55.189866 ensure.go:49: Info: Version found in the DB was current. We’re good to go!

Upgrading all secured clusters

After upgrading Central services, you must upgrade all secured clusters.

  • If you are using automatic upgrades:

    • Update all your secured clusters by using automatic upgrades.

    • Skip the instructions in this section and follow the instructions in the Verify upgrades and Revoking the API token sections.

  • If you are not using automatic upgrades, you must run the instructions in this section on all secured clusters including the Central cluster.

    • To ensure optimal functionality, use the same RHACS version for your secured clusters and the cluster on which Central is installed.

To complete manual upgrades of each secured cluster running Sensor, Collector, and Admission controller, follow the instructions in this section.

Updating other images

You must update the sensor, collector and compliance images on each secured cluster when not using automatic upgrades.

If you are using Kubernetes, use kubectl instead of oc for the commands listed in this procedure.

Procedure
  1. Update the Sensor image:

    $ oc -n stackrox set image deploy/sensor sensor=registry.redhat.io/advanced-cluster-security/rhacs-main-rhel8:4.4.0 (1)
    1 If you use Kubernetes, enter kubectl instead of oc.
  2. Update the Compliance image:

    $ oc -n stackrox set image ds/collector compliance=registry.redhat.io/advanced-cluster-security/rhacs-main-rhel8:4.4.0 (1)
    1 If you use Kubernetes, enter kubectl instead of oc.
  3. Update the Collector image:

    $ oc -n stackrox set image ds/collector collector=registry.redhat.io/advanced-cluster-security/rhacs-collector-rhel8:4.4.0 (1)
    1 If you use Kubernetes, enter kubectl instead of oc.

    If you are using the collector slim image, run the following command instead:

    $ oc -n stackrox set image ds/collector collector=registry.redhat.io/advanced-cluster-security/rhacs-collector-slim-rhel8:{rhacs-version}
  4. Update the admission control image:

    $ oc -n stackrox set image deploy/admission-control admission-control=registry.redhat.io/advanced-cluster-security/rhacs-main-rhel8:4.4.0

If you have installed RHACS on Red Hat OpenShift by using the roxctl CLI, you need to migrate the security context constraints (SCCs).

For more information, see "Migrating SCCs during the manual upgrade" in the "Additional resources" section.

Migrating SCCs during the manual upgrade

By migrating the security context constraints (SCCs) during the manual upgrade by using roxctl CLI, you can seamlessly transition the Red Hat Advanced Cluster Security for Kubernetes (RHACS) services to use the Red Hat OpenShift SCCs, ensuring compatibility and optimal security configurations across Central and all secured clusters.

Procedure
  1. List all of the RHACS services that are deployed on Central and all secured clusters:

    $ oc -n stackrox describe pods | grep 'openshift.io/scc\|^Name:'
    Example output
    Name:      admission-control-6f4dcc6b4c-2phwd
               openshift.io/scc: stackrox-admission-control
    #...
    Name:      central-575487bfcb-sjdx8
               openshift.io/scc: stackrox-central
    Name:      central-db-7c7885bb-6bgbd
               openshift.io/scc: stackrox-central-db
    Name:      collector-56nkr
               openshift.io/scc: stackrox-collector
    #...
    Name:      scanner-68fc55b599-f2wm6
               openshift.io/scc: stackrox-scanner
    Name:      scanner-68fc55b599-fztlh
    #...
    Name:      sensor-84545f86b7-xgdwf
               openshift.io/scc: stackrox-sensor
    #...

    In this example, you can see that each pod has its own custom SCC, which is specified through the openshift.io/scc field.

  2. Add the required roles and role bindings to use the Red Hat OpenShift SCCs instead of the RHACS custom SCCs.

    To add the required roles and role bindings to use the Red Hat OpenShift SCCs for the Central cluster, perform the following steps:

    1. Create a file named update-central.yaml that defines the role and role binding resources by using the following content:

      Example YAML file
      apiVersion: rbac.authorization.k8s.io/v1
      kind: Role (1)
      metadata:
        annotations:
           email: support@stackrox.com
           owner: stackrox
        labels:
           app.kubernetes.io/component: central
           app.kubernetes.io/instance: stackrox-central-services
           app.kubernetes.io/name: stackrox
           app.kubernetes.io/part-of: stackrox-central-services
           app.kubernetes.io/version: 4.4.0
        name: use-central-db-scc (2)
        namespace: stackrox (3)
      Rules: (4)
      - apiGroups:
        - security.openshift.io
        resourceNames:
        - nonroot-v2
        resources:
        - securitycontextconstraints
        verbs:
        - use
      - - -
      apiVersion: rbac.authorization.k8s.io/v1
      kind: Role
      metadata:
        annotations:
           email: support@stackrox.com
           owner: stackrox
        labels:
           app.kubernetes.io/component: central
           app.kubernetes.io/instance: stackrox-central-services
           app.kubernetes.io/managed-by: Helm
           app.kubernetes.io/name: stackrox
           app.kubernetes.io/part-of: stackrox-central-services
           app.kubernetes.io/version: 4.4.0
        name: use-central-scc
        namespace: stackrox
      rules:
      - apiGroups:
        - security.openshift.io
        resourceNames:
        - nonroot-v2
        resources:
        - securitycontextconstraints
        verbs:
        - use
      - - -
      apiVersion: rbac.authorization.k8s.io/v1
      kind: Role
      metadata:
        annotations:
           email: support@stackrox.com
           owner: stackrox
        labels:
           app.kubernetes.io/component: scanner
           app.kubernetes.io/instance: stackrox-central-services
           app.kubernetes.io/name: stackrox
           app.kubernetes.io/part-of: stackrox-central-services
           app.kubernetes.io/version: 4.4.0
        name: use-scanner-scc
        namespace: stackrox
      rules:
      - apiGroups:
        - security.openshift.io
        resourceNames:
        - nonroot-v2
        resources:
        - securitycontextconstraints
        verbs:
        - use
      - - -
      apiVersion: rbac.authorization.k8s.io/v1
      kind: RoleBinding (5)
      metadata:
        annotations:
           email: support@stackrox.com
           owner: stackrox
        labels:
           app.kubernetes.io/component: central
           app.kubernetes.io/instance: stackrox-central-services
           app.kubernetes.io/name: stackrox
           app.k ubernetes.io/part-of: stackrox-central-services
           app.kubernetes.io/version: 4.4.0
        name: central-db-use-scc (6)
        namespace: stackrox
      roleRef: (7)
        apiGroup: rbac.authorization.k8s.io
        kind: Role
        name: use-central-db-scc
      subjects: (8)
      - kind: ServiceAccount
        name: central-db
        namespace: stackrox
      - - -
      apiVersion: rbac.authorization.k8s.io/v1
      kind: RoleBinding
      metadata:
        annotations:
           email: support@stackrox.com
           owner: stackrox
        labels:
           app.kubernetes.io/component: central
           app.kubernetes.io/instance: stackrox-central-services
           app.kubernetes.io/name: stackrox
           app.kubernetes.io/part-of: stackrox-central-services
           app.kubernetes.io/version: 4.4.0
        name: central-use-scc
        namespace: stackrox
      roleRef:
        apiGroup: rbac.authorization.k8s.io
        kind: Role
        name: use-central-scc
      subjects:
      - kind: ServiceAccount
        name: central
        namespace: stackrox
      - - -
      apiVersion: rbac.authorization.k8s.io/v1
      kind: RoleBinding
      metadata:
        annotations:
           email: support@stackrox.com
           owner: stackrox
        labels:
           app.kubernetes.io/component: scanner
           app.kubernetes.io/instance: stackrox-central-services
           app.kubernetes.io/name: stackrox
           app.kubernetes.io/part-of: stackrox-central-services
           app.kubernetes.io/version: 4.4.0
        name: scanner-use-scc
        namespace: stackrox
      roleRef:
        apiGroup: rbac.authorization.k8s.io
        kind: Role
        name: use-scanner-scc
      subjects:
      - kind: ServiceAccount
        name: scanner
        namespace: stackrox
      - - -
      1 The type of Kubernetes resource, in this example, Role.
      2 The name of the role resource.
      3 The namespace in which the role is created.
      4 Describes the permissions granted by the role resource.
      5 The type of Kubernetes resource, in this example, RoleBinding.
      6 The name of the role binding resource.
      7 Specifies the role to bind in the same namespace.
      8 Specifies the subjects that are bound to the role.
    2. Create the role and role binding resources specified in the update-central.yaml file by running the following command:

      $ oc -n stackrox create -f ./update-central.yaml
  3. To add the required roles and role bindings to use the Red Hat OpenShift SCCs for all secured clusters, perform the following steps:

    1. Create a file named upgrade-scs.yaml that defines the role and role binding resources by using the following content:

      Example YAML file
      apiVersion: rbac.authorization.k8s.io/v1
      kind: Role  (1)
      metadata:
        annotations:
           email: support@stackrox.com
           owner: stackrox
        labels:
           app.kubernetes.io/component: collector
           app.kubernetes.io/instance: stackrox-secured-cluster-services
           app.kubernetes.io/name: stackrox
           app.kubernetes.io/part-of: stackrox-secured-cluster-services
           app.kubernetes.io/version: 4.4.0
           auto-upgrade.stackrox.io/component: sensor
        name: use-privileged-scc  (2)
        namespace: stackrox (3)
      rules:  (4)
      - apiGroups:
        - security.openshift.io
        resourceNames:
        - privileged
        resources:
        - securitycontextconstraints
        verbs:
        - use
      - - -
      apiVersion: rbac.authorization.k8s.io/v1
      kind: RoleBinding (5)
      metadata:
        annotations:
           email: support@stackrox.com
           owner: stackrox
        labels:
           app.kubernetes.io/component: collector
           app.kubernetes.io/instance: stackrox-secured-cluster-services
           app.kubernetes.io/name: stackrox
           app.kubernetes.io/part-of: stackrox-secured-cluster-services
           app.kubernetes.io/version: 4.4.0
           auto-upgrade.stackrox.io/component: sensor
        name: collector-use-scc (6)
        namespace: stackrox
      roleRef: (7)
        apiGroup: rbac.authorization.k8s.io
        kind: Role
        name: use-privileged-scc
      subjects: (8)
      - kind: ServiceAccount
        name: collector
        namespace: stackrox
      - - -
      1 The type of Kubernetes resource, in this example, Role.
      2 The name of the role resource.
      3 The namespace in which the role is created.
      4 Describes the permissions granted by the role resource.
      5 The type of Kubernetes resource, in this example, RoleBinding.
      6 The name of the role binding resource.
      7 Specifies the role to bind in the same namespace.
      8 Specifies the subjects that are bound to the role.
    2. Create the role and role binding resources specified in the upgrade-scs.yaml file by running the following command:

      $ oc -n stackrox create -f ./update-scs.yaml

      You must run this command on each secured cluster to create the role and role bindings specified in the upgrade-scs.yaml file.

  4. Delete the SCCs that are specific to RHACS:

    1. To delete the SCCs that are specific to the Central cluster, run the following command:

      $ oc delete scc/stackrox-central scc/stackrox-central-db scc/stackrox-scanner
    2. To delete the SCCs that are specific to all secured clusters, run the following command:

      $ oc delete scc/stackrox-admission-control scc/stackrox-collector scc/stackrox-sensor

      You must run this command on each secured cluster to delete the SCCs that are specific to each secured cluster.

Verification
  • Ensure that all the pods are using the correct SCCs by running the following command:

    $ oc -n stackrox describe pods | grep 'openshift.io/scc\|^Name:'

    Compare the output with the following table:

    Component Previous custom SCC New Red Hat OpenShift 4 SCC

    Central

    stackrox-central

    nonroot-v2

    Central-db

    stackrox-central-db

    nonroot-v2

    Scanner

    stackrox-scanner

    nonroot-v2

    Scanner-db

    stackrox-scanner

    nonroot-v2

    Admission Controller

    stackrox-admission-control

    restricted-v2

    Collector

    stackrox-collector

    privileged

    Sensor

    stackrox-sensor

    restricted-v2

Editing the GOMEMLIMIT environment variable for the Sensor deployment

Upgrading to version 4.4 requires that you manually replace the GOMEMLIMIT environment variable with the ROX_MEMLIMIT environment variable. You must edit this variable for each deployment.

Procedure
  1. Run the following command to edit the variable for the Sensor deployment:

    $ oc -n stackrox edit deploy/sensor (1)
    1 If you use Kubernetes, enter kubectl instead of oc.
  2. Replace the GOMEMLIMIT variable with ROX_MEMLIMIT.

  3. Save the file.

Editing the GOMEMLIMIT environment variable for the Collector deployment

Upgrading to version 4.4 requires that you manually replace the GOMEMLIMIT environment variable with the ROX_MEMLIMIT environment variable. You must edit this variable for each deployment.

Procedure
  1. Run the following command to edit the variable for the Collector deployment:

    $ oc -n stackrox edit deploy/collector (1)
    1 If you use Kubernetes, enter kubectl instead of oc.
  2. Replace the GOMEMLIMIT variable with ROX_MEMLIMIT.

  3. Save the file.

Editing the GOMEMLIMIT environment variable for the Admission Controller deployment

Upgrading to version 4.4 requires that you manually replace the GOMEMLIMIT environment variable with the ROX_MEMLIMIT environment variable. You must edit this variable for each deployment.

Procedure
  1. Run the following command to edit the variable for the Admission Controller deployment:

    $ oc -n stackrox edit deploy/admission-control (1)
    1 If you use Kubernetes, enter kubectl instead of oc.
  2. Replace the GOMEMLIMIT variable with ROX_MEMLIMIT.

  3. Save the file.

Verifying secured cluster upgrade

After you have upgraded secured clusters, verify that the updated pods are working.

Procedure
  • Check that the new pods have deployed:

    $ oc get deploy,ds -n stackrox -o wide (1)
    1 If you use Kubernetes, enter kubectl instead of oc.
    $ oc get pod -n stackrox --watch (1)
    1 If you use Kubernetes, enter kubectl instead of oc.

Enabling RHCOS node scanning

If you use OpenShift Container Platform, you can enable scanning of Red Hat Enterprise Linux CoreOS (RHCOS) nodes for vulnerabilities by using Red Hat Advanced Cluster Security for Kubernetes (RHACS).

Prerequisites
Procedure
  1. Run one of the following commands to update the compliance container.

    • For a default compliance container with metrics disabled, run the following command:

      $ oc -n stackrox patch daemonset/collector -p '{"spec":{"template":{"spec":{"containers":[{"name":"compliance","env":[{"name":"ROX_METRICS_PORT","value":"disabled"},{"name":"ROX_NODE_SCANNING_ENDPOINT","value":"127.0.0.1:8444"},{"name":"ROX_NODE_SCANNING_INTERVAL","value":"4h"},{"name":"ROX_NODE_SCANNING_INTERVAL_DEVIATION","value":"24m"},{"name":"ROX_NODE_SCANNING_MAX_INITIAL_WAIT","value":"5m"},{"name":"ROX_RHCOS_NODE_SCANNING","value":"true"},{"name":"ROX_CALL_NODE_INVENTORY_ENABLED","value":"true"}]}]}}}}'
    • For a compliance container with Prometheus metrics enabled, run the following command:

      $ oc -n stackrox patch daemonset/collector -p '{"spec":{"template":{"spec":{"containers":[{"name":"compliance","env":[{"name":"ROX_METRICS_PORT","value":":9091"},{"name":"ROX_NODE_SCANNING_ENDPOINT","value":"127.0.0.1:8444"},{"name":"ROX_NODE_SCANNING_INTERVAL","value":"4h"},{"name":"ROX_NODE_SCANNING_INTERVAL_DEVIATION","value":"24m"},{"name":"ROX_NODE_SCANNING_MAX_INITIAL_WAIT","value":"5m"},{"name":"ROX_RHCOS_NODE_SCANNING","value":"true"},{"name":"ROX_CALL_NODE_INVENTORY_ENABLED","value":"true"}]}]}}}}'
  2. Update the Collector DaemonSet (DS) by taking the following steps:

    1. Add new volume mounts to Collector DS by running the following command:

      $ oc -n stackrox patch daemonset/collector -p '{"spec":{"template":{"spec":{"volumes":[{"name":"tmp-volume","emptyDir":{}},{"name":"cache-volume","emptyDir":{"sizeLimit":"200Mi"}}]}}}}'
    2. Add the new NodeScanner container by running the following command:

      $ oc -n stackrox patch daemonset/collector -p '{"spec":{"template":{"spec":{"containers":[{"command":["/scanner","--nodeinventory","--config=",""],"env":[{"name":"ROX_NODE_NAME","valueFrom":{"fieldRef":{"apiVersion":"v1","fieldPath":"spec.nodeName"}}},{"name":"ROX_CLAIR_V4_SCANNING","value":"true"},{"name":"ROX_COMPLIANCE_OPERATOR_INTEGRATION","value":"true"},{"name":"ROX_CSV_EXPORT","value":"false"},{"name":"ROX_DECLARATIVE_CONFIGURATION","value":"false"},{"name":"ROX_INTEGRATIONS_AS_CONFIG","value":"false"},{"name":"ROX_NETPOL_FIELDS","value":"true"},{"name":"ROX_NETWORK_DETECTION_BASELINE_SIMULATION","value":"true"},{"name":"ROX_NETWORK_GRAPH_PATTERNFLY","value":"true"},{"name":"ROX_NODE_SCANNING_CACHE_TIME","value":"3h36m"},{"name":"ROX_NODE_SCANNING_INITIAL_BACKOFF","value":"30s"},{"name":"ROX_NODE_SCANNING_MAX_BACKOFF","value":"5m"},{"name":"ROX_PROCESSES_LISTENING_ON_PORT","value":"false"},{"name":"ROX_QUAY_ROBOT_ACCOUNTS","value":"true"},{"name":"ROX_ROXCTL_NETPOL_GENERATE","value":"true"},{"name":"ROX_SOURCED_AUTOGENERATED_INTEGRATIONS","value":"false"},{"name":"ROX_SYSLOG_EXTRA_FIELDS","value":"true"},{"name":"ROX_SYSTEM_HEALTH_PF","value":"false"},{"name":"ROX_VULN_MGMT_WORKLOAD_CVES","value":"false"}],"image":"registry.redhat.io/advanced-cluster-security/rhacs-scanner-slim-rhel8:4.4.0","imagePullPolicy":"IfNotPresent","name":"node-inventory","ports":[{"containerPort":8444,"name":"grpc","protocol":"TCP"}],"volumeMounts":[{"mountPath":"/host","name":"host-root-ro","readOnly":true},{"mountPath":"/tmp/","name":"tmp-volume"},{"mountPath":"/cache","name":"cache-volume"}]}]}}}}'
Additional resources

Remove Central-attached PV

Kubernetes and OpenShift Container Platform do not delete persistent volumes (PV) automatically. When you upgrade RHACS from earlier versions, the Central PV called stackrox-db remains mounted. However, in RHACS 4.1, Central does not need the previously attached PV anymore.

The PV has data and persistent files used by earlier RHACS versions. You can use the PV to roll back to an earlier version before RHACS 4.1. Or, if you have a large RocksDB backup bundle for Central, you can use the PV to restore that data.

If you do not plan to roll back or restore from earlier RocksDB backups, you can remove the Central-attached persistent volume claim (PVC) to free up the storage.

After removing PVC, you cannot roll back Central to an earlier version before RHACS 4.1 or restore large RocksDB backups created with RocksDB.

Remove Central-attached PV using the roxctl CLI

Remove the Central-attached persistent volume claim (PVC) stackrox-db to free up storage space.

Procedure
  • Run the following command:

    $ oc get deployment central -n stackrox -o json | jq '(.spec.template.spec.volumes[] | select(.name=="stackrox-db"))={"name": "stackrox-db", "emptyDir": {}}' | oc apply -f -

    It replaces the stackrox-db` entry in the spec.template.spec.volumes to a local emptyDir.

Verification
  • Run the following command:

    $ oc -n stackrox describe pvc stackrox-db | grep -i 'Used By'
    Used By: <none> (1)
    
    1 Wait until you see Used By: <none>. It might take a few minutes.

Rolling back Central

You can roll back to a previous version of Central if the upgrade to a new version is unsuccessful.

Rolling back Central normally

You can roll back to a previous version of Central if upgrading Red Hat Advanced Cluster Security for Kubernetes fails.

Prerequisites
  • Before you can perform a rollback, you must have free disk space available on your persistent storage. Red Hat Advanced Cluster Security for Kubernetes uses disk space to keep a copy of databases during the upgrade. If the disk space is not enough to store a copy and the upgrade fails, you might not be able to roll back to an earlier version.

Procedure
  • Run the following command to roll back to a previous version when an upgrade fails (before the Central service starts):

    $ oc -n stackrox rollout undo deploy/central (1)
    1 If you use Kubernetes, enter kubectl instead of oc.

Rolling back Central forcefully

You can use forced rollback to roll back to an earlier version of Central (after the Central service starts).

Using forced rollback to switch back to a previous version might result in loss of data and functionality.

Prerequisites
  • Before you can perform a rollback, you must have free disk space available on your persistent storage. Red Hat Advanced Cluster Security for Kubernetes uses disk space to keep a copy of databases during the upgrade. If the disk space is not enough to store a copy and the upgrade fails, you will not be able to roll back to an earlier version.

Procedure
  • Run the following commands to perform a forced rollback:

    • To forcefully rollback to the previously installed version:

      $ oc -n stackrox rollout undo deploy/central (1)
      1 If you use Kubernetes, enter kubectl instead of oc.
    • To forcefully rollback to a specific version:

      1. Edit Central’s ConfigMap:

        $ oc -n stackrox edit configmap/central-config (1)
        1 If you use Kubernetes, enter kubectl instead of oc.
      2. Update the value of the maintenance.forceRollbackVersion key:

        data:
          central-config.yaml: |
            maintenance:
              safeMode: false
              compaction:
                 enabled: true
                 bucketFillFraction: .5
                 freeFractionThreshold: 0.75
              forceRollbackVersion: <x.x.x.x> (1)
          ...
        1 Specify the version that you want to roll back to.
      3. Update the Central image version:

        $ oc -n stackrox \ (1)
          set image deploy/central central=registry.redhat.io/advanced-cluster-security/rhacs-main-rhel8:<x.x.x.x> (2)
        
        1 If you use Kubernetes, enter kubectl instead of oc.
        2 Specify the version that you want to roll back to. It must be the same version that you specified for the maintenance.forceRollbackVersion key in the central-config config map.

Verifying upgrades

The updated Sensors and Collectors continue to report the latest data from each secured cluster.

The last time Sensor contacted Central is visible in the RHACS portal.

Procedure
  1. In the RHACS portal, go to Platform ConfigurationSystem Health.

  2. Check to ensure that Sensor Upgrade shows clusters up to date with Central.

Revoking the API token

For security reasons, Red Hat recommends that you revoke the API token that you have used to complete Central database backup.

Prerequisites
  • After the upgrade, you must reload the RHACS portal page and re-accept the certificate to continue using the RHACS portal.

Procedure
  1. In the RHACS portal, go to Platform ConfigurationIntegrations.

  2. Scroll down to the Authentication Tokens category, and click API Token.

  3. Select the checkbox in front of the token name that you want to revoke.

  4. Click Revoke.

  5. On the confirmation dialog box, click Confirm.