docker - 我想在Docker-Swarm中将2个容器彼此连接

Question

我想将两个容器相互连接...我从创建覆盖网络mynet开始:

docker network create -d overlay mynet

之后，我创建了第一个服务 activemq:

docker service create --name activemq -p 61616:61616 -p 8161:8161  --replicas 1 --network mynet rmohr/activemq

这将启动并运行良好，我也可以访问WebUI http:// localhost:8161 / admin /
现在，我要启动服务 TimeService，容器中具有以下设置:

docker service create --name timeservice -p 7000:7000  --replicas 1 --network mynet ni920/timeserviceplain:latest

java.naming.provider.url=tcp://localhost:61616
java.naming.user=admin
java.naming.password=admin
io.jexxa.rest.host=0.0.0.0
io.jexxa.rest.port=7000

因此，它应该通过 tcp://localhost:61616与 ActiveMQ连接，但事实并非如此。
你们有什么线索，我应该尝试在无 Swarm环境中或在 Kubernetes-Pod环境中正常进行通信的方式吗？

Answer 1

如果您希望容器相互通信，可以使用它们的名称，然后让网络驱动程序解析其ip。
这是docker docs中的network driver summary:

• User-defined bridge networks are best when you need multiple containers to communicate on the same Docker host.
• Host networks are best when the network stack should not be isolated from the Docker host, but you want other aspects of the container to be isolated.
• Overlay networks are best when you need containers running on different Docker hosts to communicate, or when multiple applications work together using swarm services.
• Macvlan networks are best when you are migrating from a VM setup or need your containers to look like physical hosts on your network, each with a unique MAC address.
• Third-party network plugins allow you to integrate Docker with specialized network stacks.

在您的情况下，请将 本地主机替换为服务名称 activemq 。

java.naming.provider.url=tcp://activemq:61616
.
.