Install the Aerospike Kubernetes Operator on OpenShift using the Web Console

Search for the Operator in the Catalog

Launch OpenShift web console. Using the Administrator view, navigate to Operators > OperatorHub. Search for Aerospike. Select the Marketplace version of the Aerospike Kubernetes Operator as shown:

Install the operator

A dialog appears describing the Operator as shown below. Click Install to install the operator.

Configure the operator

Configure the Operator installation as shown:

note

Select openshift-operators as the namespace.

tip

We recommend selecting Automatic for Upgrade Approval. This setting automatically upgrades the operator whenever upgrades are available.

Verify the installation

On successful installation, a message like the following appears:

Select View Operator to verify the Operator details. You will see the following details:

Configure the CLI

From a terminal, login to the OpenShift cluster and ensure that the oc and kubectl commands connect to the correct OpenShift cluster.

Check Operator Logs

The Operator runs as two replicas by default, for higher availability. Run the following command to follow the logs for the Operator pods.

kubectl -n openshift-operators logs -f deployment/aerospike-operator-controller-manager manager

Output:

2022-06-16T19:09:58.058Z    INFO    controller-runtime.metrics  metrics server is starting to listen    {"addr": "127.0.0.1:8080"}
2022-06-16T19:09:58.062Z    INFO    setup   Init aerospike-server config schemas

2022-06-16T19:09:58.071Z    DEBUG   schema-map  Config schema added {"version": "4.7.0"}
2022-06-16T19:09:58.072Z    INFO    aerospikecluster-resource   Registering mutating webhook to the webhook server
2022-06-16T19:09:58.073Z    INFO    controller-runtime.webhook  registering webhook {"path": "/mutate-asdb-aerospike-com-v1beta1-aerospikecluster"}
2022-06-16T19:09:58.073Z    INFO    controller-runtime.builder  skip registering a mutating webhook, admission.Defaulter interface is not implemented   {"GVK": "asdb.aerospike.com/v1beta1, Kind=AerospikeCluster"}
2022-06-16T19:09:58.073Z    INFO    controller-runtime.builder  Registering a validating webhook    {"GVK": "asdb.aerospike.com/v1beta1, Kind=AerospikeCluster", "path": "/validate-asdb-aerospike-com-v1beta1-aerospikecluster"}
2022-06-16T19:09:58.073Z    INFO    controller-runtime.webhook  registering webhook {"path": "/validate-asdb-aerospike-com-v1beta1-aerospikecluster"}
2022-06-16T19:09:58.074Z    INFO    setup   Starting manager
I1015 19:09:58.074722       1 leaderelection.go:243] attempting to acquire leader lease aerospike/96242fdf.aerospike.com...

Grant permissions to the target namespaces

The Operator is installed in the openshift-operators namespace. It needs additional service accounts configured for the Kubernetes namespaces where the Aerospike clusters will be created.

The procedure to use the namespace aerospike is as follows:

Create the namespace

Create the Kubernetes namespace if not already created:

kubectl create namespace aerospike

Create a service account

kubectl -n aerospike create serviceaccount aerospike-operator-controller-manager

Update the operator's ClusterRoleBinding

Next, add this service account to the Operator's ClusterRoleBinding. To do this, run the following command:

kubectl edit clusterrolebindings.rbac.authorization.k8s.io $(kubectl get clusterrolebindings.rbac.authorization.k8s.io  | grep aerospike-kubernetes-operator | grep -v -- "-opera-" | grep -v -- "default-ns" | cut -f 1 -d " ")

This command launches an editor. Append the following lines to the subjects section:

  # A new entry for aerospike.
  # Replace aerospike with your namespace
- kind: ServiceAccount
  name: aerospike-operator-controller-manager
  namespace: aerospike

Save and ensure that the changes are applied.

Here is a full example of the Operator's ClusterRoleBinding targeting the aerospike namespace.

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  creationTimestamp: "2022-06-16T10:48:36Z"
  labels:
    olm.owner: aerospike-kubernetes-operator.v2.4.0
    olm.owner.kind: ClusterServiceVersion
    olm.owner.namespace: test
    operators.coreos.com/aerospike-kubernetes-operator.test: ""
  name: aerospike-kubernetes-operator.v2.4.0-74b946466d
  resourceVersion: "51841234"
  uid: be546dd5-b21e-4cc3-8a07-e2fe5fe5274c
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: aerospike-kubernetes-operator.v2.4.0-74b946466d
subjects:
  - kind: ServiceAccount
    name: aerospike-operator-controller-manager
    namespace: operators

  # New entry
  - kind: ServiceAccount
    name: aerospike-operator-controller-manager
    namespace: aerospike

OpenShift Security Context Constraints (SCC)

On OpenShift clusters, administrators can use security context constraints (SCCs) to control permissions for pods. These permissions control which actions a pod can perform, and which resources it can access. You can use SCCs to define a set of conditions that a pod must run with, in order to be accepted into the system. See OpenShift SC Guide for details. In order to run Aerospike Enterprise Server clusters on OpenShift, the Aerospike pods need to be granted access to some of the SCC on clusters

SCC anyuid (required)

Aerospike Enterprise Server images are designed to run as some non-root (any) UID. On OpenShift this requires Aerospike Pods to be allowed to run with any UID requiring anyuid SCC.

This SCC should be granted to the Operator's service account for the aerospike namespace using the following command:

oc adm policy add-scc-to-user anyuid system:serviceaccount:aerospike:aerospike-operator-controller-manager

SCC hostnetwork (optional)

This SCC allows using host networking and host ports.

This SCC should be granted to the Operator's service account for the aerospike namespace using the following command:

oc adm policy add-scc-to-user hostnetwork system:serviceaccount:aerospike:aerospike-operator-controller-manager

SCC privileged (optional)

This SCC allows access to all privileged and host features and the ability to run as any user, any group, any FSGroup, and with any SELinux context. For example, this is required to run Index on Flash storage configuration with Aerospike primary index stored on SSD devices.

This SCC should be granted to the Operator's service account for the aerospike namespace using the following command:

oc adm policy add-scc-to-user privileged system:serviceaccount:aerospike:aerospike-operator-controller-manager