来自守护程序的错误响应:连接到网络失败，请确保您的网络选项正确，并检查管理器日志:超出了上下文期限 [英] Error response from daemon: attaching to network failed, make sure your network options are correct and check manager logs: context deadline exceeded

问题描述

我正在尝试使用覆盖网络设置docker swarm.我在aws上有一些主机，而另一些是运行Ubuntu的笔记本电脑(与aws相同).每个节点都有一个静态的公共IP.我创建了一个覆盖网络，如下所示: docker network create --driver = overlay --attachable test-net

I am trying to set up docker swarm with an overlay network. I have some hosts on aws while others are laptops running Ubuntu(same as on aws). Every node has a static public IP. I have created an overlay network as: docker network create --driver=overlay --attachable test-net

我在aws主机之一上创建了一个群集网络.每个其他节点都可以加入该群集网络.

I have created a swarm network on one of the aws hosts. Every other node is able to join that swarm network.

但是，当我在不在aws上的任何节点上运行 docker run -it --name alpine2 --network test-net alpine 时，出现错误: docker:来自守护程序的错误响应:连接到网络失败，请确保您的网络选项正确，并检查管理器日志:上下文期限已过.

However when I run docker run -it --name alpine2 --network test-net alpine on any node not on aws, I get the error: docker: Error response from daemon: attaching to network failed, make sure your network options are correct and check manager logs: context deadline exceeded.

但是，如果我在任何aws主机上运行相同的命令，则一切工作正常.在网络/端口方面，如果aws上有一些节点而其他节点上没有，我还需要做更多的事情吗?

But if I run the same on any aws host, then everything is working fine. Is there anything more I need to do in terms of networking/ports If there are some nodes on aws while others are not?

我打开了所有计算机上群联网所需的端口.

I have opened the ports required for swarm networking on all machines.

编辑:在管理器节点中列出时，所有节点都标记为活动".

EDIT: All the nodes are marked as "active" when listing in the manager node.

更新通过打开相应的端口解决了此问题.现在，如果所有节点都基于Linux，则可以使用.但是，当我尝试以Linux(ubuntu)操作系统与管理器建立群时，mac os机器无法加入该群.

UPDATE Solved this issue by opening the respective ports. It now works if all the nodes are Linux based. But when I try to make a swarm with the manager as Linux(ubuntu) os, mac os machines are not able to join the swarm.

推荐答案

检查以下端口是否在两台计算机上均已打开.

Check if the below ports are opened on both machines.

• TCP 端口 2377
• TCP 和 UDP 端口 7946
• UDP 端口 4789

• TCP port 2377
• TCP and UDP port 7946
• UDP port 4789

您可以使用 ufw 允许端口:

ufw allow 2377/tcp

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