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snctl reference

snctl is a Command Line Interface (CLI) tool for StreamNative Cloud. This topic includes a list of available releases, as well as how to install, configure, and log in to snctl.

Available releases

The following table lists the available releases of snctl.

VersionReference
latestCommand reference
0.12.1Command reference
0.11.1Command reference
0.10.1Command reference
0.9.0Command reference
0.8.0Command reference
0.6.0Command reference
0.5.0Command reference

Install snctl

This section describes how to install snctl on Linux, MAC, and Windows Operating System (OS).

Install snctl on Linux OS

You can use the curl command or use Homebrew to install snctl on Linux.

Install snctl with curl command

  1. Execute the following command to download and install the latest snctl.

    bash -c "$(curl -fsSL https://storage.googleapis.com/downloads.streamnative.cloud/snctl/install.sh)"

    If you want to download a specific version, use the flag -v or --version to specify the version. For example, you can use the following command to download snctl v0.5.0.

    bash -c "$(curl -fsSL https://storage.googleapis.com/downloads.streamnative.cloud/snctl/install.sh) -v v0.5.0"

  2. Check whether snctl is installed successfully.

    snctl version --client

Install snctl with Homebrew

  1. Add the repository.

    brew tap streamnative/streamnative

  2. Install snctl.

    brew install snctl

Install snctl on Mac OS

You can use the curl command or use Homebrew to install snctl on a Mac.

Install snctl with curl command

  1. Execute the following command to download and install the latest snctl.

    bash -c "$(curl -fsSL https://storage.googleapis.com/downloads.streamnative.cloud/snctl/install.sh)"

    If you want to download a specific version, use the flag -v or --version to specify the version. For example, you can use the following command to download snctl v0.5.0.

    bash -c "$(curl -fsSL https://storage.googleapis.com/downloads.streamnative.cloud/snctl/install.sh) -v v0.5.0"

  2. Check whether snctl is installed successfully.

    snctl version --client

Install snctl with Homebrew

  1. Add the repository.

    brew tap streamnative/streamnative

  2. Install snctl.

    brew install snctl

Install snctl on Windows OS

  1. Download the latest release package.

    curl https://storage.googleapis.com/downloads.streamnative.cloud/snctl/v0.12.1/snctl_0.12.1_windows_amd64.zip -o-output <your_file_name>

  2. Extract the snctl .zip package using Windows Explorer. For details, see the instructions.

  3. (Optional) Copy the snctl.exe binary to a directory on your PATH.

  4. Check whether snctl is installed successfully.

    snctl version --client

Configure snctl

This section describes how to configure snctl.

Initialize snctl configuration

Before logging in to snctl, you need to configure snctl. You can either use the snctl config init command to initialize snctl with default configurations or you can use the snctl config set command to update the .snctl/config snctl configuration file.

Set snctl configuration

The .snctl/config file contains configurations about snctl, including OAuth2 configurations, service URL for the StreamNative Cloud API, and so on. You can use the snctl config set command to set snctl configurations.

This example sets a target organization as the default organization. Consequently, in this organization, you can perform other operations on StreamNative Cloud resources without specifying the organization name every time.

With the namespace option, you need to use the random string for the organization name, not the descriptive name. You can find the random string on the Dashboard, next to the organization's descriptive name. For an example, see organizations.

snctl config set --namespace <organization_name>

Log in to snctl as a specific user or service account

You can log in to snctl as a specific user or as a service account (admin). Compared with the user, the service account has the admin role and can grant permissions to Pulsar resources.

Log in to snctl as a user

This example shows how to log in to snctl as a user. In this way, snctl is given a token to impersonate the user.

snctl auth login

Output

Logged in as [email protected]
Welcome to StreamNative Cloud!

Log in to snctl as a service account

This example shows how to log in to snctl as a service account.

  1. Download the credentials file of the service account.

    snctl auth export-service-account <service_account_name> --key-file <service_account_name>.json

  2. Log in to snctl as a service account.

    snctl auth activate-service-account <service_account_name> --key-file <service_account_name>.json

    Output

    Logged in as [email protected]
Welcome to StreamNative Cloud!

Subscribe to StreamNative Cloud

Before you provision a cluster using snctl, you need to set up a subscription to StreamNative Cloud. This step is required with snctl version 0.14.1 and above, to align subscription plans with the new billing system. If you have a legacy cluster, submit a ticket to get assistance with moving your cluster to the updated subscription plan. You also need to add a payment method, if you have not done so already. snctl does not support setting up a payment method. You can add a payment method for your organization on the Billing page. For more information, see billing.

  1. Create a subscription.

    snctl create subscription <subscription_name> -n <organization_name>

    Output

    Preparing the subscription, please wait...
Subscription has been activated.
Please visit the customer portal to setup a payment method (stripe-c99f8b82).

  2. Specify the offer type and name.

    snctl create subscription <subscription_name> -n <organization_name> --offer-type <type_of_offer> --offer <offer_name>

    Output

    Preparing the subscription, please wait...
To activate your subscription, please pay the initial invoice.
Open the following URL:
https://stripe.com/...
Subscription has been activated.

You can now continue on to provisioning a Pulsar cluster.

Use snctl to provision a Pulsar cluster

This section describes how to provision Pulsar clusters through snctl.

In this section, the target organization name is already set in the .snctl/config file. Therefore, you do not need to use the --namespace <organization_name> flag to specify the target organization every time when executing snctl commands. For details about how to set snctl configurations, see set snctl configuration.

Create a Pulsar cluster

This section describes how to create a Pulsar cluster through snctl.

  1. Create a Pulsar instance named neo.

    This example shows how to create the neo instance on the AWS cloud platform. To create a Pulsar instance on the Google Cloud Platform (GCP), set the infrastructure pool name to streamnative/shared.

    snctl create pulsarinstance neo --pool streamnative/shared-aws

    Output

    pulsarinstance.cloud.streamnative.io/neo created

  2. Create a Pulsar cluster named neo-1, which uses tiny-1 node type and is deployed in us-east-1.

    snctl create pulsarcluster neo-1 --instance-name neo --node-type tiny-1 --location us-east-1

    Output

    pulsarcluster.cloud.streamnative.io/neo-1 created

Get the details of a Pulsar cluster

You can use the snctl describe pulsarcluster <cluster_name> command to get details of a Pulsar cluster.

This example gets details of the neo-1 cluster.

snctl describe pulsarcluster neo-1

Output

Cluster neo-1
Name:         neo-1
Namespace:    matrix
Labels:       <none>
Annotations:  <none>
API Version:  cloud.streamnative.io/v1alpha1
Kind:         PulsarCluster
Metadata:
  Creation Timestamp:  2021-01-25T14:48:27Z
  Finalizers:
    pulsarcluster.finalizers.cloud.streamnative.io
  Generation:  2
  Managed Fields:
    API Version:  cloud.streamnative.io/v1alpha1
    Fields Type:  FieldsV1
    fieldsV1:
      f:spec:
        f:bookkeeper:
          .:
          f:replicas:
          f:resourceSpec:
        f:broker:
          f:resourceSpec:
            .:
            f:nodeType:
        f:instanceName:
        f:location:
    Manager:      snctl
    Operation:    Update
    Time:         2021-01-25T14:48:27Z
    API Version:  cloud.streamnative.io/v1alpha1
    Fields Type:  FieldsV1
    fieldsV1:
      f:spec:
        f:broker:
          f:replicas:
    Manager:      kubectl
    Operation:    Update
    Time:         2021-01-29T09:51:58Z
    API Version:  cloud.streamnative.io/v1alpha1
    Fields Type:  FieldsV1
    fieldsV1:
      f:metadata:
        f:finalizers:
          .:
          v:"pulsarcluster.finalizers.cloud.streamnative.io":
      f:status:
        f:conditions:
          .:
          k:{"type":"BookKeeperReady"}:
            .:
            f:lastTransitionTime:
            f:status:
            f:type:
          k:{"type":"PulsarBrokerReady"}:
            .:
            f:lastTransitionTime:
            f:reason:
            f:status:
            f:type:
          k:{"type":"PulsarProxyReady"}:
            .:
            f:lastTransitionTime:
            f:reason:
            f:status:
            f:type:
          k:{"type":"Ready"}:
            .:
            f:lastTransitionTime:
            f:reason:
            f:status:
            f:type:
          k:{"type":"ZookeeperReady"}:
            .:
            f:lastTransitionTime:
            f:status:
            f:type:
    Manager:         controller-manager
    Operation:       Update
    Time:            2021-02-05T03:16:49Z
  Resource Version:  18740114
  Self Link:         /apis/cloud.streamnative.io/v1alpha1/namespaces/matrix/pulsarclusters/neo-1
  UID:               774c4774-47c7-4913-b9b7-58c47c2f5e43
Spec:
  Book Keeper Set Ref:
    Name:       shared-aws-us-east-1
    Namespace:  streamnative
  Broker:
    Image:     598203581484.dkr.ecr.us-east-2.amazonaws.com/streamnative/pulsar-cloud:2.7.0.4
    Replicas:  1
    Resource Spec:
      Node Type:  tiny-1
  Instance Name:  neo
  Location:       us-east-1
  Pool Member Ref:
    Name:       aws-us-east-1
    Namespace:  streamnative
  Service Endpoints:
    Dns Name:  neo-1.matrix.aws-us-east-1.streamnative.aws.snio.cloud
  Zoo Keeper Set Ref:
    Name:       shared-aws-us-east-1
    Namespace:  streamnative
Status:
  Conditions:
    Last Transition Time:  2021-02-05T03:16:49Z
    Status:                True
    Type:                  ZookeeperReady
    Last Transition Time:  2021-02-05T03:00:11Z
    Status:                True
    Type:                  BookKeeperReady
    Last Transition Time:  2021-02-05T02:33:29Z
    Reason:                Deploy
    Status:                True
    Type:                  PulsarBrokerReady
    Last Transition Time:  2021-01-25T14:54:28Z
    Reason:                Deploy
    Status:                True
    Type:                  PulsarProxyReady
    Last Transition Time:  2021-02-05T03:16:49Z
    Reason:                AllConditionStatusTrue
    Status:                True
    Type:                  Ready
Events:                    <none>

From the outputs, you can see that the status and type parameters for items under Conditions are set to true and ready respectively. This means that the neo-1 cluster is created successfully.

Add clusters to the Pulsar configuration file

This section describes how to add a cluster to the Pulsar client configuration file. After adding a cluster to the Pulsar client configuration file, you can manage the cluster using the pulsarctl CLI tool. For details about how to manage Pulsar resources through pulsarctl, see pulsarctl command reference.

It is recommended to use the pulsarctl context get command to set the context (cluster) in advance.

  1. Add a cluster to the Pulsar client configuration file.

    This example adds a neo-1 cluster to the Pulsar client configuration file.

    Input

    snctl x update-pulsar-config --cluster-name <neo-1>

    Output

    Updated Pulsar client configuration for context 'neo-1'.

  2. Verify that the current context has been changed.

    Input

    pulsarctl context current

    Output

    neo-1

After verifying that the change was made, you can use the pulsarctl CLI tool to interact with the target cluster. For details, see Connect to cluster through pulsarctl. To work with tenants, namespaces, and topics, you can use the StreamNative Cloud Console. snctl does not currently support working with these features.

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