Deployment and use of Nacos

download

The official download

Deploy

stand-alone

192.168.1.10 This server is used in this chapter , To install MySQL.
Upload the downloaded file to /usr/local/nacos Under the document

mkdir /usr/local/nacos   #  establish nacos Folder , Upload the file downloaded above here 
cd /usr/local/nacos      #  Enter file 
tar -zxvf nacos-server-2.1.0.tar.gz   #  Unzip the file 
cd nacos/conf/   #  Enter the conf In file 

After entering the document will be nacos-mysql.sql Save the file or make a copy , Enter into MySQL in

create database nacos_mysql;    #  Create database 
use nacos_mysql;    #  Enter this database 
source /usr/local/weekeight/nacos/nacos/conf/nacos-mysql.sql;  #  perform sql file , The path is based on the absolute path of your file 
create user 'nacos'@'%' identified by 'nacos';   #  Create user 
grant all on nacos_mysql.* to 'nacos'@'%';   #  Assign permissions 
flush privileges;   #  Refresh 

Linux Console

cd /usr/local/nacos/nacos/conf/   #  Enter the configuration folder 
cp cluster.conf.example cluster.conf   #  Copy the cluster file 
vim application.properties    #  The configuration file 
vim cluster.conf   #  Configure clusters 

Modify the configuration file application.properties, Attributes use vim Search function to find and then unlock comments or modify parameters

server.servlet.contextPath=/nacos
server.port=8848
spring.datasource.platform=mysql
db.num=1
db.url.0=jdbc:mysql://192.168.1.10:3306/nacos_mysql?characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useUnicode=true&useSSL=false&serverTimezone=UTC
db.user.0=nacos
db.password.0=nacos
nacos.core.auth.enabled=false    #  Close permissions , It can be opened for use 

Modify the configuration file cluster.conf, take nacos Of IP+ Write in the port , The port is set above

192.168.1.10:8848

start-up

cd /usr/local/nacos/nacos/bin/
./startup.sh -m stanalone   #  Start the program 

visit 192.168.1.10:8848/nacos Enter interface , account number nacos\ password nacos

Use

Configuration Management
   It is equivalent to that the configuration center can hot refresh the configuration of the project
Service management
   It's equivalent to a registry
Access control
   User creation and permission control
Namespace
   You can create namespaces , It can be understood as a project with a namespace , A set of microservices in a project , There are many programs .
Cluster management
  nacos Cluster management of

The namespace has its own , Now create a new namespace example, Namespace id Also use example, Not set up id It will generate automatically （uuid）,id Will be used in the program
Java Add maven
The configuration file used in the project should use bootstrap.yml perhaps bootstrap.properties,bootstrap The priority ratio application high

According to your own installation nacos The introduction of different versions corresponds to maven, Reference here

<!-- nacos Service registration / Find out -->
<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
    <version>2.2.8.RELEASE</version>
</dependency>
<!--nacos The configuration center is used for configuration management -->
<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
    <version>2.2.8.RELEASE</version>
</dependency>

Registry Center

Specify the namespace just created , Appoint nacos Of IP:port, In this way, you can see the service in the service list after starting , Of course, you can add group To group , Group by environment or whatever

Configuration center

What needs attention here is my spring.profiles.active=dev Not in the configuration file , But in the startup parameters , The main reason is that you don't need to change the environment when packaging yml file , Running jar Just switch packages , Make it convenient

At the same time nacos Create a Data ID by ${prefix}-${spring.profile.active}.${file-extension},group It can be configured by default , At this time, the configuration content will be loaded when the program is started

Use @Value and @RefreshScope Cooperate to realize hot refresh , Use it together .

This column is a micro service record column , If you have any questions, please point out , Learning together ！