(13) Springcloud of springboot E-commerce mall - using Eureka cluster to build and implement high availability service registry

Sweet girl 2021-04-08 10:25:47
springcloud springboot e-commerce commerce mall

The registration center we built above is only suitable for local development , In the production environment, we must build a cluster to ensure high availability .Eureka The method of building cluster is very simple : Each station Eureka Just specify more than one... In the configuration Eureka You can build a cluster with the address of .

Now let's 2 A node is taken as an example to illustrate the construction method . Suppose we have master and slaveone Two machines , What needs to be done is :

  • take master Sign up to slaveone above .
  • take slaveone Sign up to master above .

If it is 3 Taiwan machine , And so on :

  • take master Sign up to slaveone and slavetwo above .
  • take slaveone Sign up to master and slavetwo above .
  • take slavetwo Sign up to master and slaveone above .

Steps to build

Create a new project eureka-server-cluster, Configure the following eureka-server equally .

First , We need to increase 2 Property files , Start different instances in different environments . increase application-master.properties:

# To your slave node Eureka
eureka.client.serviceUrl.defaultZone=http:// user name : password @localhost:8762/eureka/

increase application-slaveone.properties:

# Pointing to your master node Eureka
eureka.client.serviceUrl.defaultZone=http:// user name : password @localhost:8761/eureka/

stay application.properties Add the following to :

# Because the app is a registry , So set to false, Representative does not register himself with the registry 
# Because the registry's job is to maintain service instances , There's no need to retrieve Services , So it's also set to false
# Specify different environments 

stay A The default on the machine is master start-up , And then in B Add on the machine --spring.profiles.active=slaveone Start it up .

This will be master Registered to slaveone in , take slaveone Registered to master in , No matter who has a problem , Applications can continue to use the surviving registry .

Previously, in the client, we configured eureka.client.serviceUrl.defaultZone To specify the corresponding registry , When our registry has multiple nodes , It needs to be modified eureka.client.serviceUrl.defaultZone Is configured as the address of multiple nodes , Multiple addresses can be separated by English commas :


Recommended cloth type Micro Service Mall

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