CLI
LinDB Command-Line Client（以下简称 cli）是 LinDB 自带的命令行工具，用于管理查询集群内各组件状态及数据。
./lind-cli -help
Usage of ./lind-cli:
-endpoint string
Broker HTTP Endpoint (default "http://localhost:9000")
cli 目前只提供了一个命令行参数：Broker 节点 HTTP 服务的地址。 连接至 Broker 节点后，可通过 LinQL 来查询相关状态及数据。下面举几个简单的例子，更多细节请查看 LinQL 。
可以通过上下方向键快速浏览历史执行中的 LinQL。
启动 cli
./lind-cli
Welcome to the LinDB.
Server version: 0.0.1
lin@localhost:9000>
查看数据库列表
lin@localhost:9000> show databases;
+-----------+
| Database |
+-----------+
| _internal |
+-----------+
1 rows in sets (4.218862ms)
查看数据库 Schema
lin@localhost:9000> show schemas;
+-----------+----------------+------------------------------------------------------------------------+
| Name | Storage | Desc |
+-----------+----------------+------------------------------------------------------------------------+
| _internal | /lindb-cluster | create database _internal with shard 1, replica 1, intervals [10s->1M] |
+-----------+----------------+------------------------------------------------------------------------+
1 rows in sets (7.747045ms)
集群状态
- 查看当前 Master 状态
lin@localhost:9000> show master;
+-------------+---------------------+
| Desc | Value |
+-------------+---------------------+
| Elect Time | 2022-05-15 16:52:48 |
| Online Time | 2022-05-15 16:52:48 |
| Host IP | 192.168.0.112 |
| Host Name | woker0 |
| HTTP Port | 9000 |
| GRPC Port | 9001 |
+-------------+---------------------+
1 rows in sets (4.675873ms)
- 查看存活的 Broker 节点
lin@localhost:9000> show broker alive;
+---------------------+---------------+-----------+-----------------+---------+
| Online time | Host IP | Host Name | Port(HTTP/GRPC) | Version |
+---------------------+---------------+-----------+-----------------+---------+
| 2022-05-15 16:52:48 | 192.168.0.112 | worker0 | 9000/9001 | 0.0.1 |
+---------------------+---------------+-----------+-----------------+---------+
1 rows in sets (1.38066ms)
查询数据库中的数据
- 切换查询数据库
lin@localhost:9000> use _internal;
Database changed(current:_internal)
- 查看有哪些指标名
lin@localhost:9000> show metrics;
+----------------------------------------------------+
| Metric |
+----------------------------------------------------+
| lindb.broker.database.write |
| lindb.broker.family.write |
| lindb.broker.query |
| ...... |
| lindb.traffic.tcp |
| lindb.tsdb.shard |
| lindb.tsdb.shard.indexdb_flush_duration |
| lindb.tsdb.shard.memdb_flush_duration |
+----------------------------------------------------+
50 rows in sets (6.495605ms)
- 查看某个指标名下有哪些 Field
lin@localhost:9000> show fields from lindb.tsdb.shard;
+-----------------------------+-------+
| Name | Type |
+-----------------------------+-------+
| write_metrics_failures | sum |
| active_memdbs | gauge |
| lookup_metric_meta_failures | sum |
| write_metrics | sum |
| write_batches | sum |
| write_fields | sum |
| memdb_total_size | gauge |
| memdb_flush_failures | sum |
| indexdb_flush_failures | sum |
| active_families | gauge |
+-----------------------------+-------+
10 rows in sets (7.448755ms)
- 查看某个指标名下有哪些 Tag Key
lin@localhost:9000> show tag keys from lindb.tsdb.shard;
+-----------+
| Tag Key |
+-----------+
| db |
| namespace |
| node |
| role |
| shard |
+-----------+
5 rows in sets (7.065156ms)
- 查看指标名下某个 Tag Key 下有哪些 Tag Value
lin@localhost:9000> show tag values from lindb.tsdb.shard with key='db';
+-----------+
| Tag Value |
+-----------+
| _internal |
+-----------+
1 rows in sets (5.984711ms)
- 查看某个指标下的指标数据
lin@localhost:9000> select write_fields from lindb.tsdb.shard where time>now()-2m group by db,node;
+-----------+--------------------+---------------------+--------------+
| db | node | timestamp | write_fields |
+-----------+--------------------+---------------------+--------------+
| _internal | 192.168.0.112:2891 | 2022-05-15 17:05:50 | 1061 |
| _internal | 192.168.0.112:2891 | 2022-05-15 17:06:00 | 1805 |
| _internal | 192.168.0.112:2891 | 2022-05-15 17:06:10 | 1806 |
| _internal | 192.168.0.112:2891 | 2022-05-15 17:06:20 | 1805 |
| _internal | 192.168.0.112:2891 | 2022-05-15 17:06:30 | 1805 |
| _internal | 192.168.0.112:2891 | 2022-05-15 17:06:40 | 1807 |
| _internal | 192.168.0.112:2891 | 2022-05-15 17:06:50 | 1807 |
| _internal | 192.168.0.112:2891 | 2022-05-15 17:07:00 | 1807 |
| _internal | 192.168.0.112:2891 | 2022-05-15 17:07:10 | 1805 |
| _internal | 192.168.0.112:2891 | 2022-05-15 17:07:20 | 1806 |
| _internal | 192.168.0.112:2891 | 2022-05-15 17:07:30 | 1807 |
| _internal | 192.168.0.112:2891 | 2022-05-15 17:07:40 | 1807 |
| _internal | 192.168.0.112:2891 | 2022-05-15 17:07:50 | 1811 |
+-----------+--------------------+---------------------+--------------+
1 rows in sets (8.235714ms)