Spring boot应用程序在docker中链接领事失败

Question

我正在尝试使用领事作为发现服务，和另外两个Spring启动应用程序注册与领事；把它们放进码头；

以下是我的代码：app：

server:
  port: 3333

spring:
  application:
    name: adder
  cloud:
    consul:
      host: consul
      port: 8500
      discovery:
        preferIpAddress: true
        healthCheckPath: /health
        healthCheckInterval: 15s
        instanceId: ${spring.application.name}:${spring.application.instance_id:${server.port}}

 consul1:
  image: "progrium/consul:latest"
  container_name: "consul1"
  hostname: "consul1"
  command: "-server -bootstrap -ui-dir /ui"
 adder:
  image: wsy/adder
  ports:
   - "3333:3333"
 links:
   - consul1
 environment:
   WAIT_FOR_HOSTS: consul1:8500

adder_1    | com.ecwid.consul.transport.TransportException: java.net.ConnectException: Connection refused
adder_1    |    at com.ecwid.consul.transport.AbstractHttpTransport.executeRequest(AbstractHttpTransport.java:80) ~[consul-api-1.1.8.jar!/:na]
adder_1    |    at com.ecwid.consul.transport.AbstractHttpTransport.makeGetRequest(AbstractHttpTransport.java:39) ~[consul-api-1.1.8.jar!/:na]

除了spring boot application.yml和docker-compose.yml之外，下面是app的Dockerfile

FROM java:8

VOLUME /tmp
ADD adder-0.0.1-SNAPSHOT.jar app.jar
RUN bash -c 'touch /app.jar'
ADD start.sh start.sh
RUN bash -c 'chmod +x /start.sh'
EXPOSE 3333
ENTRYPOINT ["/start.sh", " java -Djava.security.egd=file:/dev/./urandom    -jar /app.jar"]

开始的时候.sh

#!/bin/bash

set -e

wait_single_host() {
  local host=$1
  shift
  local port=$1
  shift

  echo "waiting for TCP connection to $host:$port..."

  while ! nc ${host} ${port} > /dev/null 2>&1 < /dev/null
  do
    echo "TCP connection  [$host] not ready, will try again..."
    sleep 1
 done

  echo "TCP connection ready. Executing command [$host] now..."
}

 wait_all_hosts() {
  if [ ! -z "$WAIT_FOR_HOSTS" ]; then
   local separator=':'
   for _HOST in $WAIT_FOR_HOSTS ; do
      IFS="${separator}" read -ra _HOST_PARTS <<< "$_HOST"
      wait_single_host "${_HOST_PARTS[0]}" "${_HOST_PARTS[1]}"
    done
   else
     echo "IMPORTANT : Waiting for nothing because no $WAIT_FOR_HOSTS env var defined !!!"
   fi
  }

  wait_all_hosts

  exec $1

Answer 1

我可以推断您的领事配置位于application.yml中，而不是bootstrap.yml，这就是问题所在。

根据这个答案，bootstrap.yml是在application.yml之前加载的，Consult client必须在应用程序本身之前检查其配置，因此要查看bootstrap.yml。

工作bootstrap.yml的示例：

spring:
  cloud:
    consul:
      host: consul
      port: 8500
      discovery:
        prefer-ip-address: true

>

运行Consuler server，不要忘记与您的配置匹配的name选项：

Docker run-d-p 8500:8500--name=consult progrium/consult-server-bootstrap

Docker run-d-name=my-consul-client-app--link领事：consular acme/spring-app