验证集群运行状态
本文档介绍如何通过 TiDB Dashboard 和 Grafana 检查集群状态,以及登录数据库执行简单 DML、DDL 操作和查询 SQL 语句。
通过 TiDB Dashboard 和 Grafana 检查集群状态
本节介绍如何通过 TiDB Dashboard 和 Grafana 检查集群状态。
查看 TiDB Dashboard 检查 TiDB 集群状态
通过
{pd-ip}:{pd-port}/dashboard
登录 TiDB Dashboard,登录用户和口令为 TiDB 数据库root
用户和口令。如果你修改过数据库的root
密码,则以修改后的密码为准,默认密码为空。主页面显示 TiDB 集群中节点信息
查看 Grafana 监控 Overview 页面检查 TiDB 集群状态
通过
{Grafana-ip}:3000
登录 Grafana 监控,默认用户名及密码为admin
/admin
。点击 Overview 监控页面检查 TiDB 端口和负载监控信息。
登录数据库执行简单 DML/DDL 操作和查询 SQL 语句
执行如下命令登录数据库:
mysql -u root -h 10.0.1.4 -P 4000
输出下列信息表示登录成功:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.25-TiDB-v4.0.0 TiDB Server (Apache License 2.0) Community Edition, MySQL 5.7 compatible
Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
数据库操作
检查 TiDB 版本
select tidb_version()\G预期结果输出:
*************************** 1. row *************************** tidb_version(): Release Version: v4.0.0 Edition: Community Git Commit Hash: 689a6b6439ae7835947fcaccf329a3fc303986cb Git Branch: HEAD UTC Build Time: 2020-05-28 11:09:45 GoVersion: go1.13.4 Race Enabled: false TiKV Min Version: v3.0.0-60965b006877ca7234adaced7890d7b029ed1306 Check Table Before Drop: false 1 row in set (0.00 sec)创建 PingCAP database
create database pingcap;Query OK, 0 rows affected (0.10 sec)use pingcap;预期输出
Database changed创建
tab_tidb
表CREATE TABLE `tab_tidb` ( `id` int(11) NOT NULL AUTO_INCREMENT, `name` varchar(20) NOT NULL DEFAULT '', `age` int(11) NOT NULL DEFAULT 0, `version` varchar(20) NOT NULL DEFAULT '', PRIMARY KEY (`id`), KEY `idx_age` (`age`));预期输出
Query OK, 0 rows affected (0.11 sec)插入数据
insert into `tab_tidb` values (1,'TiDB',5,'TiDB-v4.0.0');预期输出
Query OK, 1 row affected (0.03 sec)查看
tab_tidb
结果select * from tab_tidb;预期输出
+----+------+-----+-------------+ | id | name | age | version | +----+------+-----+-------------+ | 1 | TiDB | 5 | TiDB-v4.0.0 | +----+------+-----+-------------+ 1 row in set (0.00 sec)查看 TiKV store 状态、
store_id
、存储情况以及启动时间select STORE_ID,ADDRESS,STORE_STATE,STORE_STATE_NAME,CAPACITY,AVAILABLE,UPTIME from INFORMATION_SCHEMA.TIKV_STORE_STATUS;预期输出
+----------+--------------------+-------------+------------------+----------+-----------+--------------------+ | STORE_ID | ADDRESS | STORE_STATE | STORE_STATE_NAME | CAPACITY | AVAILABLE | UPTIME | +----------+--------------------+-------------+------------------+----------+-----------+--------------------+ | 1 | 10.0.1.1:20160 | 0 | Up | 49.98GiB | 46.3GiB | 5h21m52.474864026s | | 4 | 10.0.1.2:20160 | 0 | Up | 49.98GiB | 46.32GiB | 5h21m52.522669177s | | 5 | 10.0.1.3:20160 | 0 | Up | 49.98GiB | 45.44GiB | 5h21m52.713660541s | +----------+--------------------+-------------+------------------+----------+-----------+--------------------+ 3 rows in set (0.00 sec)退出
exit预期输出
Bye