Start a Database

This section explains how to start a database.

This procedure can be carried out using either the Administration API or ConfD.

Prerequisites

The database must be stopped. For more information, see Stop a Database.

Procedure - Administration API

The following examples use curl on a Linux terminal to send REST calls to endpoints in the Administration API. You can also use other interfaces and languages to interact with the API. For more information, see Administration API.

Placeholder values are styled as Bash variables, for example: $EXASOL_IP. Replace the placeholders with your own values.

  1. To get the database name, send a GET request to the /api/v1/databases endpoint.

    curl -k -X "GET" \
    "https://$EXASOL_IP/api/v1/databases" \
    -H "accept: application/json" \
    -H "Authorization: Basic $AUTH_TOKEN"

    The response will include the database ID and name. For example:

    [
      {
        "id": "Exasol",
        "name": "Exasol",
    ...
  2. To start the database, send a PUT request to the /api/v1/databases/DATABASE_ID/start endpoint.

    curl -k -X "PUT" \
    "https://$EXASOL_IP/api/v1/databases/$DATABASE_ID/start \
    -H "accept: application/json" \
    -H "Authorization: Basic $AUTH_TOKEN"

    If the database nodes are offline and you want to start the nodes before the database, add ?startInstances=true after the endpoint.

    curl -k -X "PUT" \
    "https://$EXASOL_IP/api/v1/databases/$DATABASE_ID/start?startInstances=true" \
    -H "accept: application/json" \
    -H "Authorization: Basic $AUTH_TOKEN"
  3. To verify that the database is running, send a GET request to the /api/v1/databases endpoint.

    If the value for running in the response is greater than 0, the database is running. For example:

    [
      {
        "id": "Exasol",
        "name": "Exasol",
        "provider": "unknown",
        "version": "8.23.1",
        "ram": 22376,
        "auditing": true,
        "clusters": {
          "total": 1,
          "running": 1
    ...

Procedure - ConfD

The following examples use the command-line tool confd_client in a Linux terminal connected to a database node. For more information about how to use this tool, see ConfD.

  1. To find the name of the database, use the ConfD job db_list. For example:

    confd_client -c db_list
    - Exasol
  2. To start the database, use the ConfD job db_start. For example:

    confd_client -c db_start -a 'db_name: Exasol'
  3. To verify that the database is running, use the ConfD job db_state. For example:

    confd_client -c db_state -a 'db_name: Exasol'
    ...
    Result:
    'running'