Nacos download, start and configure MySQL database

Official website ： https://nacos.io/zh-cn/docs/quick-start.html

One 、window start-up

1、Nacos download

Nacos Download address ：https://github.com/alibaba/nacos/releases

2、nacos To configure MySQL database

• take nacos In the catalog config/nacos-mysql.sql Import to MySQL, The name of the library is arbitrarily specified
• modify config/application.properties File configuration MySQL database

#*************** Config Module Related Configurations ***************#
### If use MySQL as datasource:
spring.datasource.platform=mysql

### Count of DB:
db.num=1

### Connect URL of DB:
db.url.0=jdbc:mysql://127.0.0.1:3306/nacos_config?characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useUnicode=true&useSSL=false&serverTimezone=UTC
db.user.0=root
db.password.0=123456

3、 start-up nacos

Turn on nacos

Linux/Unix/Mac
 Start command (standalone Stands for stand-alone mode operation , Non cluster mode ):

sh startup.sh -m standalone

 If you are using ubuntu System , Or run the script to report an error [[ Symbol not found , Try the following operation ：

bash startup.sh -m standalone

Windows
 Start command (standalone Stands for stand-alone mode operation , Non cluster mode ):

startup.cmd -m standalone

Access address http://127.0.0.1:8848/nacos , Default login user name and password nacos/nacos, New namespace , The new configuration file is as follows

Two 、docker start-up

1、docker Pull nacos Mirror image

DockerHub Download mirroring https://registry.hub.docker.com/r/nacos/nacos-server

docker pull nacos/nacos-server

2、 initialization MySQL Database script

https://github.com/alibaba/nacos/blob/develop/distribution/conf/nacos-mysql.sql

3、docker start-up nacos（ To configure MySQL Connect ）

docker run -d \
-e PREFER_HOST_MODE=ip \
-e MODE=standalone \
-e SPRING_DATASOURCE_PLATFORM=mysql \
-e MYSQL_SERVICE_HOST=42.0.0.0 \
-e MYSQL_SERVICE_PORT=3306 \
-e MYSQL_SERVICE_DB_NAME=nacos_config \
-e MYSQL_SERVICE_USER=root \
-e MYSQL_SERVICE_PASSWORD=123456 \
-e NACOS_APPLICATION_PORT=8848 \
-p 8848:8848 -p 9848:9848 -p 9849:9849 \
--name nacos \
--restart=always \
--privileged=true \
nacos/nacos-server

Access address ： http://42.0.0.0:8848/nacos Default username password ： nacos/nacos, New namespace , The new configuration file is as follows

4、 solve the problem

①、Nacos Server did not start because dumpservice bean construction failure : No DataSource set

Ensure that the database connection is correct , Look at the database name 、 Refresh database connection 、 Check user name and password 、 The connection timeout can be extended 、 Set time zone

②、server error: such as timeout. Request nacos server failed

If it is an ECS, it needs to be turned on 8848、 9848 、9849 Otherwise, the port will report an error server error: such as timeout. Request nacos server failed:
Port specification ：https://nacos.io/zh-cn/docs/2.0.0-compatibility.html

Nacos2.0 （8848、 9848 、9849 ） Version comparison 1.X （8848） Added gRPC Mode of communication , So we need to increase 2 Ports . The new port is the main port configured (server.port) On the basis of , Automatically generate a certain offset .

port	Offset from the primary port	describe
8848		nacos Main end slogan
9848	1000	client gRPC Request server port , It is used to initiate connections and requests from the client to the server
9849	1001	Server side gRPC Request server port , Used for synchronization between services, etc

3、 ... and 、docker nacos Cluster building

Pull image and initialize nacos The database is the same as the stand-alone mode above , following docker nacos newest 2.0.4 Version deployment succeeded , The ports used under ECS firewall configuration

1、 Start cluster

Pay attention to the need to turn on 7848 port , Default port 8848 subtract 1000, Otherwise it will be reported The Raft Group [naming_persistent_service] did not find the Leader node; or
Nacos cluster is running with 1.X mode, can't accept gRPC request temporarily. Please check the server status or close Double write to force open 2.0 mode. Detail https://nacos.io/en-us/docs/2.0.0-upgrading.html. or
caused: old raft protocol already stop;

192.168.1.1 The server nacos1

docker run -d\
 -e PREFER_HOST_MODE=ip\
 -e MODE=cluster\
 -e SPRING_DATASOURCE_PLATFORM=mysql\
 -e MYSQL_SERVICE_HOST=192.168.1.10\
 -e MYSQL_SERVICE_PORT=3306\
 -e MYSQL_SERVICE_DB_NAME=nacos_config\
 -e MYSQL_SERVICE_USER=username\
 -e MYSQL_SERVICE_PASSWORD=password\
 -e NACOS_APPLICATION_PORT=8848\
 -e NACOS_SERVERS="192.168.1.1:8848 192.168.1.1:8846 192.168.1.2:8848"\
 -e NACOS_SERVER_IP=192.168.1.1\
 -p 8848:8848 -p 9848:9848 -p 9849:9849 -p 7848:7848\
 --name nacos --restart=always nacos/nacos-server

192.168.1.1 The server nacos 2

docker run -d\
 -e PREFER_HOST_MODE=ip\
 -e MODE=cluster\
 -e SPRING_DATASOURCE_PLATFORM=mysql\
 -e MYSQL_SERVICE_HOST=192.168.1.10\
 -e MYSQL_SERVICE_PORT=3306\
 -e MYSQL_SERVICE_DB_NAME=nacos_config\
 -e MYSQL_SERVICE_USER=username\
 -e MYSQL_SERVICE_PASSWORD=password\
 -e NACOS_APPLICATION_PORT=8846\
 -e NACOS_SERVERS="192.168.1.1:8848 192.168.1.1:8846 192.168.1.2:8848"\
 -e NACOS_SERVER_IP=192.168.1.1\
 -p 8846:8846 -p 9846:9846 -p 9847:9847 -p 7846:7846\
 --name nacos2 --restart=always nacos/nacos-server

192.168.1.2 The server nacos3

docker run -d\
 -e PREFER_HOST_MODE=ip\
 -e MODE=cluster\
 -e SPRING_DATASOURCE_PLATFORM=mysql\
 -e MYSQL_SERVICE_HOST=192.168.1.10\
 -e MYSQL_SERVICE_PORT=3306\
 -e MYSQL_SERVICE_DB_NAME=nacos_config\
 -e MYSQL_SERVICE_USER=username\
 -e MYSQL_SERVICE_PASSWORD=password\
 -e NACOS_APPLICATION_PORT=8848\
 -e NACOS_SERVERS="192.168.1.1:8848 192.168.1.1:8846 192.168.1.2:8848"\
 -e NACOS_SERVER_IP=192.168.1.2\
 -p 8848:8848 -p 9848:9848 -p 9849:9849 -p 7848:7848\
 --name nacos --restart=always nacos/nacos-server

2、 View cluster

here Just enter a service address that will do

The above states are all up The cluster may not be built successfully , Click the node metadata to check whether it can be selected leader

Or use the interface to get leader

http://192.168.1.1:8080/nacos/v1/ns/raft/leader, more nacos relevant API May refer to https://nacos.io/zh-cn/docs/open-api.html

If you cannot select leader, You can see nacos/logs In the catalog nacos.log、 naming-raft.log、protocol-raft.log、nacos-cluster.log 、naming-server.log Log to see if there is an error

3、nginx agent nacos colony

docker Download start nginx Containers are not elaborated

If you have already mounted nginx The configuration file of can be modified directly , You can also enter the container to modify without mounting

default.conf My configuration is relatively simple , Configure the weight by yourself

upstream nacosList {
    server 192.168.1.1:8848 weight=1;
	server 192.168.1.2:8848 weight=2;
	server 192.168.1.1:8846 weight=3;
}

server {
    listen       80;
    listen  [::]:80;
    server_name  192.168.1.1;

    location / {
        root   /usr/share/nginx/html;
        index  index.html index.htm;
    }
    location /nacos {
        proxy_pass  http://nacosList/nacos;
    }

    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/nginx/html;
    }
}

my nginx 8080 mapping 80, as follows nginx f Load balancing successful

4、 Turn off double write

nacos Documentation shows that turning off double write can save performance overhead

PUT : http://192.168.1.1:8848/nacos/v1/ns/operator/switches?entry=doubleWriteEnabled&value=false

logs/naming-server.log It was observed in the log that Disable Double write, stop and clean v1.x cache and features word , Note double write is turned off .

5、 Service up and down line

nacos The service registered on the console can go online and offline normally