Show Meta Info Action
Request
GET /api/show_meta_info
Description
用于显示一些元数据信息
Path parameters
无
Query parameters
action
指定要获取的元数据信息类型。目前支持如下:
SHOW_DB_SIZE
获取指定数据库的数据量大小,单位为字节。
SHOW_HA
获取 FE 元数据日志的回放情况,以及可选举组的情况。
Request body
无
Response
SHOW_DB_SIZE
{
"msg": "success",
"code": 0,
"data": {
"default_cluster:information_schema": 0,
"default_cluster:db1": 381
},
"count": 0
}SHOW_HA
{
"msg": "success",
"code": 0,
"data": {
"can_read": "true",
"role": "MASTER",
"is_ready": "true",
"last_checkpoint_version": "1492",
"last_checkpoint_time": "1596465109000",
"current_journal_id": "1595",
"electable_nodes": "",
"observer_nodes": "",
"master": "10.81.85.89"
},
"count": 0
}
Examples
查看集群各个数据库的数据量大小
GET /api/show_meta_info?action=show_db_size
Response:
{
"msg": "success",
"code": 0,
"data": {
"default_cluster:information_schema": 0,
"default_cluster:db1": 381
},
"count": 0
}查看 FE 选举组情况
GET /api/show_meta_info?action=show_ha
Response:
{
"msg": "success",
"code": 0,
"data": {
"can_read": "true",
"role": "MASTER",
"is_ready": "true",
"last_checkpoint_version": "1492",
"last_checkpoint_time": "1596465109000",
"current_journal_id": "1595",
"electable_nodes": "",
"observer_nodes": "",
"master": "10.81.85.89"
},
"count": 0
}