Skip to content

Latest commit

 

History

History
203 lines (139 loc) · 5.24 KB

post-installation-check.md

File metadata and controls

203 lines (139 loc) · 5.24 KB
Raw
title summary category
验证集群运行状态
介绍如何验证集群运行状态。
how-to

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

  1. 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。

    TiDB-Dashboard

  2. 主页面显示 TiDB 集群中节点信息

    TiDB-Dashboard-status

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。

    Grafana-login

  • 点击 Overview 监控页面检查 TiDB 端口和负载监控信息。

    Grafana-overview

登录数据库执行简单 DML/DDL 操作和查询 SQL 语句

注意：

登录数据库前，你需要安装 MySQL 客户端。

执行如下命令登录数据库：

{{< copyable "shell-regular" >}}

mysql -u root -h 10.0.1.4 -P 4000

数据库操作

  • 登录成功

    {{< copyable "sql" >}}

    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.

  • 检查 TiDB 版本

    {{< copyable "sql" >}}

    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

    {{< copyable "sql" >}}

    create database pingcap;
    Query OK, 0 rows affected (0.10 sec)

    {{< copyable "sql" >}}

    use pingcap;

    预期输出

    Database changed

  • 创建 tab_tidb 表

    {{< copyable "sql" >}}

    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

    {{< copyable "sql" >}}

    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

    {{< copyable "sql" >}}

    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

    {{< copyable "sql" >}}

    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

    {{< copyable "sql" >}}

    exit

    预期输出

    Bye