Tidb - quick start, cluster setup

TiDB Open source distributed relational database , It supports both online transaction processing and online analysis processing (Hybrid Transactional and Analytical Processing, HTAP） Integrated distributed database products , With horizontal expansion or reduction 、 Financial high availability 、 real time HTAP、 Cloud native distributed database 、 compatible MySQL 5.7 The protocol and MySQL Ecological and other important characteristics . The goal is to provide users with one-stop OLTP (Online Transactional Processing)、OLAP (Online Analytical Processing)、HTAP Solution .TiDB For high availability 、 Strong consensus requires higher requirements 、 Large data scale and other application scenarios .

The goal of this article

• A preliminary understanding TiDB
• Use TiUP Simulate the production environment on a single machine TiDB Cluster steps
• Basic use

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A preliminary understanding TiDB

• TiDB yes Open source A distributed Relational database
• TiDB compatible MySQL 5.7 agreement
• TiDB Horizontal expansion and contraction
• Official website ：https://pingcap.com/

Use TiUP Simulate the production environment on a single machine TiDB Cluster steps

Official quick start tutorial ：https://docs.pingcap.com/zh/tidb/stable/quick-start-with-tidb 18 year 10 I wrote an article about construction in January TiDB A tutorial for ：https://4xx.me/archives/67.html

1. TiUP Is a cluster management tool , It is recommended to deploy in the central control computer

2. Prepare a deployment host , Recommended installation CentOS 7.3 And above .( It can be together with the central control computer )

3. Download and install TiUP

curl --proto '=https' --tlsv1.2 -sSf https://tiup-mirrors.pingcap.com/install.sh | sh
##  Redeclare global environment variables 
source .bash_profile
##  confirm  TiUP  Whether the tool is installed 
which tiup
##  install  TiUP cluster  Components 
tiup cluster
##  to update  TiUP cluster  Component to latest version 
tiup update --self && tiup update cluster

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4. Create a new profile topology.yaml.ip Change to the machine that needs to be deployed ip, Be careful ssh port

• Provide a copy of topology.yaml Templates ：topology.yaml

## Global variables are applied to all deployments and used as the default value of
## the deployments if a specific deployment value is missing.
global:
 user: "tidb"
 ssh_port: 22
 deploy_dir: "/data/tidb-deploy"
 data_dir: "/data/tidb-data"

## Monitored variables are applied to all the machines.
monitored:
 node_exporter_port: 9100
 blackbox_exporter_port: 9115

server_configs:
 tidb:
   log.slow-threshold: 300
 tikv:
   readpool.storage.use-unified-pool: false
   readpool.coprocessor.use-unified-pool: true
 pd:
   replication.enable-placement-rules: true
 tiflash:
   logger.level: "info"

pd_servers:
 - host: 192.168.137.13

tidb_servers:
 - host: 192.168.137.13

tikv_servers:
 - host: 192.168.137.13
   port: 20160
   status_port: 20180

monitoring_servers:
 - host: 192.168.137.13

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5. Execute the cluster deployment command

###  see tidb Version list 
tiup list tidb
### tidb-test  Name the cluster ,v4.0.4  Currently installed version 
tiup cluster deploy tidb-test v4.0.4 ./topology.yaml --user root -p
###  Follow the lead , Input ”y” And  root  password , To complete the deployment 

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6. Start cluster

### tidb-test  Name the cluster 
tiup cluster start tidb-test

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7. View the topology and status of the cluster

tiup cluster display tidb-test

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8. visit web Monitoring background , Default account root, The password is empty

http://192.168.137.13:2379/dashboard/#/signin

Basic use

1. Use Navicat Premium 15 Registered Edition Connect to database , Default port 4000, account number root, The password is empty

2. Change or set the password

## set password for  account number =password(' New password ');
set password for root=password('root');

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