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4.3. Configuring persistent storage

Metering requires persistent storage to persist data collected by the Metering Operator and to store the results of reports. A number of different storage providers and storage formats are supported. Select your storage provider and modify the example configuration files to configure persistent storage for your metering installation.

4.3.1. Storing data in Amazon S3
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Metering can use an existing Amazon S3 bucket or create a bucket for storage.

注意

Metering does not manage or delete any S3 bucket data. You must manually clean up S3 buckets that are used to store metering data.

Procedure

  1. Edit the spec.storage section in the s3-storage.yaml file:

    Example s3-storage.yaml file

    apiVersion: metering.openshift.io/v1
kind: MeteringConfig
metadata:
  name: "operator-metering"
spec:
  storage:
    type: "hive"
    hive:
      type: "s3"
      s3:
        bucket: "bucketname/path/"
    1 
    
        region: "us-west-1"
    2 
    
        secretName: "my-aws-secret"
    3 
    
        # Set to false if you want to provide an existing bucket, instead of
        # having metering create the bucket on your behalf.
        createBucket: true
    4

    1
    Specify the name of the bucket where you would like to store your data. Optional: Specify the path within the bucket.
    2
    Specify the region of your bucket.
    3
    The name of a secret in the metering namespace containing the AWS credentials in the data.aws-access-key-id and data.aws-secret-access-key fields. See the example Secret object below for more details.
    4
    Set this field to false if you want to provide an existing S3 bucket, or if you do not want to provide IAM credentials that have CreateBucket permissions.

  2. Use the following Secret object as a template:

    Example AWS Secret object

    apiVersion: v1
kind: Secret
metadata:
  name: my-aws-secret
data:
  aws-access-key-id: "dGVzdAo="
  aws-secret-access-key: "c2VjcmV0Cg=="

    注意

    The values of the aws-access-key-id and aws-secret-access-key must be base64 encoded.

  3. Create the secret: 

    $ oc create secret -n openshift-metering generic my-aws-secret \
  --from-literal=aws-access-key-id=my-access-key \
  --from-literal=aws-secret-access-key=my-secret-key
    注意

    This command automatically base64 encodes your aws-access-key-id and aws-secret-access-key values.

The aws-access-key-id and aws-secret-access-key credentials must have read and write access to the bucket. The following aws/read-write.json file shows an IAM policy that grants the required permissions:

Example aws/read-write.json file

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "1",
            "Effect": "Allow",
            "Action": [
                "s3:AbortMultipartUpload",
                "s3:DeleteObject",
                "s3:GetObject",
                "s3:HeadBucket",
                "s3:ListBucket",
                "s3:ListMultipartUploadParts",
                "s3:PutObject"
            ],
            "Resource": [
                "arn:aws:s3:::operator-metering-data/*",
                "arn:aws:s3:::operator-metering-data"
            ]
        }
    ]
}

If spec.storage.hive.s3.createBucket is set to true or unset in your s3-storage.yaml file, then you should use the aws/read-write-create.json file that contains permissions for creating and deleting buckets:

Example aws/read-write-create.json file

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "1",
            "Effect": "Allow",
            "Action": [
                "s3:AbortMultipartUpload",
                "s3:DeleteObject",
                "s3:GetObject",
                "s3:HeadBucket",
                "s3:ListBucket",
                "s3:CreateBucket",
                "s3:DeleteBucket",
                "s3:ListMultipartUploadParts",
                "s3:PutObject"
            ],
            "Resource": [
                "arn:aws:s3:::operator-metering-data/*",
                "arn:aws:s3:::operator-metering-data"
            ]
        }
    ]
}

4.3.2. Storing data in S3-compatible storage
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You can use S3-compatible storage such as Noobaa.

Procedure

  1. Edit the spec.storage section in the s3-compatible-storage.yaml file:

    Example s3-compatible-storage.yaml file

    apiVersion: metering.openshift.io/v1
kind: MeteringConfig
metadata:
  name: "operator-metering"
spec:
  storage:
    type: "hive"
    hive:
      type: "s3Compatible"
      s3Compatible:
        bucket: "bucketname"
    1 
    
        endpoint: "http://example:port-number"
    2 
    
        secretName: "my-aws-secret"
    3

    1
    Specify the name of your S3-compatible bucket.
    2
    Specify the endpoint for your storage.
    3
    The name of a secret in the metering namespace containing the AWS credentials in the data.aws-access-key-id and data.aws-secret-access-key fields. See the example Secret object below for more details.

  2. Use the following Secret object as a template:

    Example S3-compatible Secret object

    apiVersion: v1
kind: Secret
metadata:
  name: my-aws-secret
data:
  aws-access-key-id: "dGVzdAo="
  aws-secret-access-key: "c2VjcmV0Cg=="

4.3.3. Storing data in Microsoft Azure
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To store data in Azure blob storage, you must use an existing container.

Procedure

  1. Edit the spec.storage section in the azure-blob-storage.yaml file:

    Example azure-blob-storage.yaml file

    apiVersion: metering.openshift.io/v1
kind: MeteringConfig
metadata:
  name: "operator-metering"
spec:
  storage:
    type: "hive"
    hive:
      type: "azure"
      azure:
        container: "bucket1"
    1 
    
        secretName: "my-azure-secret"
    2 
    
        rootDirectory: "/testDir"
    3

    1
    Specify the container name.
    2
    Specify a secret in the metering namespace. See the example Secret object below for more details.
    3
    Optional: Specify the directory where you would like to store your data.

  2. Use the following Secret object as a template:

    Example Azure Secret object

    apiVersion: v1
kind: Secret
metadata:
  name: my-azure-secret
data:
  azure-storage-account-name: "dGVzdAo="
  azure-secret-access-key: "c2VjcmV0Cg=="

  3. Create the secret: 

    $ oc create secret -n openshift-metering generic my-azure-secret \
  --from-literal=azure-storage-account-name=my-storage-account-name \
  --from-literal=azure-secret-access-key=my-secret-key

4.3.4. Storing data in Google Cloud Storage
复制链接

To store your data in Google Cloud Storage, you must use an existing bucket.

Procedure

  1. Edit the spec.storage section in the gcs-storage.yaml file:

    Example gcs-storage.yaml file

    apiVersion: metering.openshift.io/v1
kind: MeteringConfig
metadata:
  name: "operator-metering"
spec:
  storage:
    type: "hive"
    hive:
      type: "gcs"
      gcs:
        bucket: "metering-gcs/test1"
    1 
    
        secretName: "my-gcs-secret"
    2

    1
    Specify the name of the bucket. You can optionally specify the directory within the bucket where you would like to store your data.
    2
    Specify a secret in the metering namespace. See the example Secret object below for more details.

  2. Use the following Secret object as a template:

    Example Google Cloud Storage Secret object

    apiVersion: v1
kind: Secret
metadata:
  name: my-gcs-secret
data:
  gcs-service-account.json: "c2VjcmV0Cg=="

  3. Create the secret: 

    $ oc create secret -n openshift-metering generic my-gcs-secret \
  --from-file gcs-service-account.json=/path/to/my/service-account-key.json

4.3.5. Storing data in shared volumes
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Metering does not configure storage by default. However, you can use any ReadWriteMany persistent volume (PV) or any storage class that provisions a ReadWriteMany PV for metering storage.

注意

NFS is not recommended to use in production. Using an NFS server on RHEL as a storage back end can fail to meet metering requirements and to provide the performance that is needed for the Metering Operator to work appropriately.

Other NFS implementations on the marketplace might not have these issues, such as a Parallel Network File System (pNFS). pNFS is an NFS implementation with distributed and parallel capability. Contact the individual NFS implementation vendor for more information on any testing that was possibly completed against OpenShift Container Platform core components.

Procedure

  1. Modify the shared-storage.yaml file to use a ReadWriteMany persistent volume for storage: 

    apiVersion: metering.openshift.io/v1
kind: MeteringConfig
metadata:
  name: "operator-metering"
spec:
  storage:
    type: "hive"
    hive:
      type: "sharedPVC"
      sharedPVC:
        claimName: "metering-nfs"
    1 
    
        # Uncomment the lines below to provision a new PVC using the specified storageClass.
    2 
    
        # createPVC: true
        # storageClass: "my-nfs-storage-class"
        # size: 5Gi

    Select one of the configuration options below:

    1
    Set storage.hive.sharedPVC.claimName to the name of an existing ReadWriteMany persistent volume claim (PVC). This configuration is necessary if you do not have dynamic volume provisioning or want to have more control over how the persistent volume is created.
    2
    Set storage.hive.sharedPVC.createPVC to true and set the storage.hive.sharedPVC.storageClass to the name of a storage class with ReadWriteMany access mode. This configuration uses dynamic volume provisioning to create a volume automatically.

  2. Create the following resource objects that are required to deploy an NFS server for metering. Use the oc create -f <file-name>.yaml command to create the object YAML files.

    1. Configure a PersistentVolume resource object:

      Example nfs_persistentvolume.yaml file

      apiVersion: v1
kind: PersistentVolume
metadata:
  name: nfs
  labels:
    role: nfs-server
spec:
  capacity:
    storage: 5Gi
  accessModes:
  - ReadWriteMany
  storageClassName: nfs-server
      1 
      
  nfs:
    path: "/"
    server: REPLACEME
  persistentVolumeReclaimPolicy: Delete

      1
      Must exactly match the [kind: StorageClass].metadata.name field value.

    2. Configure a Pod resource object with the nfs-server role:

      Example nfs_server.yaml file

      apiVersion: v1
kind: Pod
metadata:
  name: nfs-server
  labels:
    role: nfs-server
spec:
  containers:
    - name: nfs-server
      image: <image_name>
      1 
      
      imagePullPolicy: IfNotPresent
      ports:
        - name: nfs
          containerPort: 2049
      securityContext:
        privileged: true
      volumeMounts:
      - mountPath: "/mnt/data"
        name: local
  volumes:
    - name: local
      emptyDir: {}

      1
      Install your NFS server image.

    3. Configure a Service resource object with the nfs-server role:

      Example nfs_service.yaml file

      apiVersion: v1
kind: Service
metadata:
  name: nfs-service
  labels:
    role: nfs-server
spec:
  ports:
  - name: 2049-tcp
    port: 2049
    protocol: TCP
    targetPort: 2049
  selector:
    role: nfs-server
  sessionAffinity: None
  type: ClusterIP

    4. Configure a StorageClass resource object:

      Example nfs_storageclass.yaml file

      apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: nfs-server
      1 
      
provisioner: example.com/nfs
parameters:
  archiveOnDelete: "false"
reclaimPolicy: Delete
volumeBindingMode: Immediate

      1
      Must exactly match the [kind: PersistentVolume].spec.storageClassName field value.
警告

Configuration of your NFS storage, and any relevant resource objects, will vary depending on the NFS server image that you use for metering storage.

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