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Prerequisites

To complete this guide, you will need permissions to create a read-only user on Presto.

To connect Monte Carlo to a Presto cluster to run data health SQL queries, follow these steps:

  1. Create a Presto cluster for Monte Carlo's data health queries using AWS EMR. Alternatively, you may use an existing cluster that you already have in your environment.
  2. Ensure that Monte Carlo's data collector has network connectivity to the cluster.
  3. Create a read-only service account on Presto if necessary.
  4. Provide service account credentials to Monte Carlo.

Creating a service account on Presto

Monte Carlo supports basic authentication or custom certificates for Presto connections. Please create a read-only user for Monte Carlo, or obtain a certificate file that enables authentication to Presto.

Providing account credentials to Monte Carlo

You will provide connection details for Presto using Monte Carlo's CLI:

  1. Please follow this guide to install and configure the CLI.
  2. Please use the command montecarlo integrations add-presto to set up Presto connectivity. For reference, see help for this command below:
$ montecarlo integrations add-presto --help
Usage: montecarlo integrations add-presto [OPTIONS]

  Setup a Presto SQL integration. For health queries.

Options:
  --host TEXT                 Hostname.  [required]
  --port INTEGER              HTTP port.  [default: 8889]
  --user TEXT                 Username with access to catalog/schema.
  --password TEXT             User's password. If you prefer a prompt (with
                              hidden input) enter -1

  --catalog TEXT              Mount point to access data source.  [required]
  --schema TEXT               Schema to access.  [required]
  --http-scheme [http|https]  Scheme for authentication.  [required]
  --cert-file FILE            Local SSL certificate file to upload to
                              collector. This option cannot be used with
                              'cert-s3'.

  --cert-s3 TEXT              Object path (key) to a certificate already
                              uploaded to the collector. This option cannot be
                              used with 'cert-file'.

  --collector-id UUID         ID for the data collector. To disambiguate
                              accounts with multiple collectors.

  --skip-validation           Skip all connection tests. This option cannot be
                              used with 'validate-only'.

  --validate-only             Run connection tests without adding. This option
                              cannot be used with 'skip-validation'.

  --auto-yes                  Skip any interactive approval.  [default: False]
  --option-file FILE          Read configuration from FILE.
  --help                      Show this message and exit.

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