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Upgrading secured clusters in RHACS Cloud <strong>service</strong> by using the roxctl CLI - Upgrading RHACS Cloud <strong>service</strong> | RHACS Cloud <strong>service</strong> | Red Hat Advanced Cluster Security for Kubernetes 4.4
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Manually upgrading secured clusters in RHACS Cloud service by using the roxctl CLI

You can upgrade your secured clusters in RHACS Cloud service by using the roxctl CLI.

You need to manually upgrade secured clusters only if you used the roxctl CLI to install the secured clusters.

Upgrading the roxctl CLI

To upgrade the roxctl CLI to the latest version, you must uninstall your current version of the 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 -L -f -o roxctl "https://mirror.openshift.com/pub/rhacs/assets/4.4.5/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 -L -f -o roxctl "https://mirror.openshift.com/pub/rhacs/assets/4.4.5/bin/Darwin/roxctl${arch}"

  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/4.4.5/bin/Windows/roxctl.exe
Verification

  • Verify the roxctl version you have installed:

    $ roxctl version

Upgrading all secured clusters manually

To ensure optimal functionality, use the same RHACS version for your secured clusters that RHACS Cloud service is running. If you are using automatic upgrades, update all your secured clusters by using automatic upgrades. If you are not using automatic upgrades, complete the instructions in this section on all secured clusters.

To complete manual upgrades of each secured cluster running Sensor, Collector, and Admission controller, follow these instructions.

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-rhel8:4.4.5 (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-rhel8:4.4.5 (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-rhel8:4.4.5 (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-rhel8:4.4.5

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.
Additional resources

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 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.

  3. To add the required roles and role bindings to use the Red Hat OpenShift SCCs for all secured clusters, complete 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 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-rhel8:4.4.5","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