Show Meta Info Action

Request

GET /api/show_meta_info

Description

Used to display some metadata information

Path parameters

无

Query parameters

  • action

    Specify the type of metadata information to be obtained. Currently supports the following:

    • SHOW_DB_SIZE

      Get the data size of the specified database, in bytes.

    • SHOW_HA

      Obtain the playback status of FE metadata logs and the status of electable groups.

Request body

None

Response

  • SHOW_DB_SIZE

    1. {
    2.     "msg": "success",
    3.     "code": 0,
    4.     "data": {
    5.         "default_cluster:information_schema": 0,
    6.         "default_cluster:db1": 381
    7.     },
    8.     "count": 0
    9. }

  • SHOW_HA

    1. {
    2.     "msg": "success",
    3.     "code": 0,
    4.     "data": {
    5.         "can_read": "true",
    6.         "role": "MASTER",
    7.         "is_ready": "true",
    8.         "last_checkpoint_version": "1492",
    9.         "last_checkpoint_time": "1596465109000",
    10.         "current_journal_id": "1595",
    11.         "electable_nodes": "",
    12.         "observer_nodes": "",
    13.         "master": "10.81.85.89"
    14.     },
    15.     "count": 0
    16. }

Examples

  1. View the data size of each database in the cluster

    1. GET /api/show_meta_info?action=show_db_size
    3. Response:
    4. {
    5.     "msg": "success",
    6.     "code": 0,
    7.     "data": {
    8.         "default_cluster:information_schema": 0,
    9.         "default_cluster:db1": 381
    10.     },
    11.     "count": 0
    12. }

  2. View the FE election group situation

    1. GET /api/show_meta_info?action=show_ha
    3. Response:
    4. {
    5.     "msg": "success",
    6.     "code": 0,
    7.     "data": {
    8.         "can_read": "true",
    9.         "role": "MASTER",
    10.         "is_ready": "true",
    11.         "last_checkpoint_version": "1492",
    12.         "last_checkpoint_time": "1596465109000",
    13.         "current_journal_id": "1595",
    14.         "electable_nodes": "",
    15.         "observer_nodes": "",
    16.         "master": "10.81.85.89"
    17.     },
    18.     "count": 0
    19. }