Set up nacos2 X cluster steps and problems encountered

build nacos2.X Cluster steps and problems encountered

First, stand-alone version +mysql Persistence is no problem , Here you can refer to the official website

Because it is built on a server , So you need to copy 3 Share nacos

1、 Modify after copying conf/application.properties Port information , The default is server.port=8848

Pay attention to point one ： because nacos2.x Two new grpc The port of , So when you modify it 3 Ports cannot be continuous , Do not then cause port conflicts

Website shows

So the default here is 8848 Words , Will take up 8848、9848、9849 Three ports . So here are three suggestions nacos It is revised as follows

8648、8748、8848

2、 Configure cluster node information

Configuration file in conf In the catalog cluster.conf.example file , Need to rename to cluster.conf. Then add the following information

 own ip:8648
 own ip:8748
 own ip:8848

Three nacos All modified , stay bin Under boot , Direct execution startup.sh. It's supposed to be over here , Visit the console to see the information of each node , But here comes the second question

Pay attention to point two ： Because I configured it on Alibaba cloud nacos, Alibaba cloud has public and Intranet addresses . After I configure it as a public network , Every nacos Of cluster.conf In file , An intranet address will appear by default , Lead to nacos The log keeps reporting errors , Later, when I saw someone else's configuration, I realized that it was originally to be configured as an intranet address , If it is a different server, then there is no such problem

Successfully started after modification , The node information displayed in the console is also correct , All are 3 individual

3、 Next configure nginx forward

Pay attention to three ： In the first point, I mentioned the two new ports , So in configuration nginx Pay special attention when , Otherwise, the console will be able to access , But the actual registration is less than nacos On

The detailed configuration is as follows

http {
    include       mime.types;
    default_type  application/octet-stream;

    sendfile        on;

    keepalive_timeout  65;

  # Change one 
   upstream nacos{
        server 101.42.239.36:8648;
        server 101.42.239.36:8748;
        server 101.42.239.36:8848;
    }

  # Change two 
    server {
        listen       8080;
        server_name  localhost;

        location / {
           proxy_pass http://nacos;
        }

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

    }
}

# Change three 
stream {
   upstream nacos2{
        server 101.42.239.36:9648;
        server 101.42.239.36:9748;
        server 101.42.239.36:9848;
    }
    upstream nacos3{
        server 101.42.239.36:9649;
        server 101.42.239.36:9749;
        server 101.42.239.36:9849;
    }
  
  # because nacos It is offset according to the port grpc Port of . So you need to be in 8080 Offset based on 1000、1001
    server {
	   listen 9080 so_keepalive=on;
       tcp_nodelay on;  
       proxy_pass nacos2;
   }
   server {
       listen 9081 so_keepalive=on;
          tcp_nodelay on;  
          proxy_pass nacos3;
   }
}

Note 4 ： Because of my nginx The default installation is when compiling and installing , Therefore, an error will be reported when using the above configuration file , The error message is below . So you need to recompile nginx, add to stream modular

# Error message 
unknown directive “stream” in /usr/local/nginx

linux Compilation and installation nginx course

# recompile nginx, add stream
./configure --with-stream
make
make install

Finally start nginx, Client restart service , see nacos Console , Service registration successful , And it's done .