我使用的RabbitMQ并从一个简单的Python样品在这里 一起泊坞窗-撰写.我的问题是我需要等待rabbitmq完全启动.从我到目前为止搜索到的,我不知道如何等待容器x(在我的情况下是工人)直到y(rabbitmq)开始.
我找到了这个博文,他检查其他主机是否在线.我还发现了这个docker命令:
等待
用法:docker等CONTAINER [CONTAINER ...]
阻止,直到容器停止,然后打印其退出代码.
等待容器停止可能不是我想要的但如果是,是否可以在docker-compose.yml中使用该命令？到目前为止,我的解决方案是等待几秒钟并检查端口,但这是实现此目的的方法吗？如果我不等,我会收到错误.
泊坞窗,compose.yml
worker:
build: myapp/.
volumes:
- myapp/.:/usr/src/app:ro
links:
- rabbitmq
rabbitmq:
image: rabbitmq:3-management
python hello sample(rabbit.py):
import pika
import time
import socket
pingcounter = 0
isreachable = False
while isreachable is False and pingcounter < 5:
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try:
s.connect(('rabbitmq', 5672))
isreachable = True
except socket.error as e:
time.sleep(2)
pingcounter += 1
s.close()
if isreachable:
connection = pika.BlockingConnection(pika.ConnectionParameters(
host="rabbitmq"))
channel = connection.channel()
channel.queue_declare(queue='hello')
channel.basic_publish(exchange='', …我有以下docker-compose，在启动myprogram-app之前，我需要等待服务jhipster-registry启动并接受连接。
我按照官方文档https://docs.docker.com/compose/compose-file/compose-file-v2/尝试了healtcheck方法
version: '2.1'
services:
myprogram-app:
image: myprogram
mem_limit: 1024m
environment:
- SPRING_PROFILES_ACTIVE=prod,swagger
- EUREKA_CLIENT_SERVICE_URL_DEFAULTZONE=http://admin:$${jhipster.registry.password}@jhipster-registry:8761/eureka
- SPRING_CLOUD_CONFIG_URI=http://admin:$${jhipster.registry.password}@jhipster-registry:8761/config
- SPRING_DATASOURCE_URL=jdbc:postgresql://myprogram-postgresql:5432/myprogram
- JHIPSTER_SLEEP=0
- SPRING_DATA_ELASTICSEARCH_CLUSTER_NODES=myprogram-elasticsearch:9300
- JHIPSTER_REGISTRY_PASSWORD=53bqDrurQAthqrXG
- EMAIL_USERNAME
- EMAIL_PASSWORD
ports:
- 8080:8080
networks:
- backend
depends_on:
- jhipster-registry:
"condition": service_started
- myprogram-postgresql
- myprogram-elasticsearch
myprogram-postgresql:
image: postgres:9.6.5
mem_limit: 256m
environment:
- POSTGRES_USER=myprogram
- POSTGRES_PASSWORD=myprogram
networks:
- backend
myprogram-elasticsearch:
image: elasticsearch:2.4.6
mem_limit: 512m
networks:
- backend
jhipster-registry:
extends:
file: jhipster-registry.yml
service: jhipster-registry
mem_limit: …