Config and install FDB

Doris Compute-storage decoupled uses FoundationDB as the metadata storage component. In K8s deployment mode, use the v1beta2 version of fdb-kubernetes-operator to deploy fdb.

Doris-Operator shields the tediousness of manually configuring FoundationDBCluster, and abstracts very little configuration information to reduce the cost of learning to use FoundationDBCluster resources. Through abstraction, Doris-Operator hopes that users only focus on matters related to FDB deployment, without paying attention to the internal operating mechanism of FDB and the complex connection between Doris and FDB.

Simplest configuration

By default, you only need to configure the resources used by FDB, and Doris-Operator automatically generates FoundationDBCluster to deploy the FDB metadata management cluster.

Default configuration:

spec:
  fdb:
    requests:
      cpu: 4
      memory: 4Gi
    limits:
      cpu: 4
      memory: 4Gi

With the above configuration, Doris-Operator will automatically deploy an FDB cluster consisting of 5 pods.

Specify image deployment

Doris-Operator uses the 7.1.38 version recommended by Doris to deploy FDB by default. In a privatized environment and if there are special requirements for the FDB version, please configure the image or configure the private warehouse image pull key in the following format.

Private warehouse public image configuration

In the case of a private warehouse or external network access failure, you need to configure the private image warehouse address.

spec:
  fdb:
    image: {fdb_image}
    sidecarImage: {fdb_sidecarImage}

Set {fdb_image} to the corresponding FoundationDB main image (selectdb/foundationdb:xxx in the selectdb repository), and {fdb_sidecarImage} to the FDB sidecar container image (selectdb/foundationdb-kubernetes-sidecar:xxx in the selectdb repository).

Configure the specified image-related configuration to the [DorisDisaggregatedMetaService](../install-quickstart#Install DorisDisaggregatedMetaService) resource that needs to be deployed.

Configure image secret

When using a private repository, if you configure access keys, follow the Kubernetes private repository imagePullSecret creation steps to create the corresponding secret and deploy it to the DorisDisaggregatedMetaService namespace.

spec:
  fdb:
    image: {fdb_image}
    sidecarImage: {fdb_sidecarImage}
    imagePullSecrets:
    - {secret_name}
    requests:
      cpu: 4
      memory: 4Gi
    limits:
      cpu: 4
      memory: 4Gi

For the configuration of {fdb_image} and {fdb_sidecarImage}, please refer to the private repository public image configuration ** ** related introduction. {secret_name} is the name of the secret created according to the Kubernetes private repository imagePullSecret.

Add the above configuration to the [DorisDisaggregatedMetaSerivce](/docs/3.0/install/cluster-deployment/k8s-deploy/compute-storage-decoupled/install-quickstart#Install DorisDisaggregatedMetaService) resource that needs to be deployed.

Configure storage

FoundationDB is a stateful distributed storage service that needs to configure persistent storage. By default, Doris-Operator will use the default StorageClass in Kubernetes to build the relevant pvc for the FDB pod. The default size of pvc is 128Gi. If you need to specify StorageClass and modify the default configuration size, please modify it as follows:

spec:
  fdb:
    volumeClaimTemplate:
      spec:
        #storageClassName: {storageClassName}
        resources:
          requests:
            storage: "200Gi"

The above configuration uses the default StorageClass to create a 200Gi storage for the FDB service. If you need to specify a StorageClass, uncomment it and replace the variable {storageClassName} with the name of the StorageClass you want to specify.

Simplest configuration​

Specify image deployment​

Private warehouse public image configuration​

Configure storage​

Simplest configuration

Specify image deployment

Private warehouse public image configuration

Configure storage