Azure ACS Kubernetes Windows容器延迟了Internet访问 [英] Azure ACS Kubernetes Windows Containers delayed access to internet

问题描述

昨天4/19/17，我使用Azure门户为Windows容器创建了Azure ACS.我发现，每当部署到该容器时，该容器在2-3分钟内都无法连接到Internet.我登录到其中一个节点，并使用同一张图片手动创建了一个容器，它可以立即访问Internet.

I used the Azure portal to create an Azure ACS for windows containers yesterday 4/19/17. I find that whenever I deploy to it the container can't reach the internet for 2-3 minutes. I logged in to one of the nodes and manual created a container from the same image and it instantly can access the internet.

我看到的一个区别是，kubernetes拥有的容器包含一个附加的transparentNet，其中普通docker容器仅具有nat网络.

One difference I see is that the kubernetes owned containers contain an additional transparentNet where the plain docker container only has a nat network.

这是我正在运行的测试代码

This is the test code I'm running

 static void Main(string[] args)
    {
        var connectedStopWatch = new Stopwatch();
        var disconnectedStopWatch = new Stopwatch();
        while (true)
        {
            try
            {
                using (var wc = new WebClient())
                {
                    wc.DownloadString("http://google.com");
                    connectedStopWatch.Start();
                }
                Console.WriteLine($"Connected for {connectedStopWatch.ElapsedMilliseconds} ms");
            }
            catch (WebException e)
            {
                connectedStopWatch.Stop();
                disconnectedStopWatch.Start();
                Console.WriteLine($"Disconnected for {disconnectedStopWatch.ElapsedMilliseconds} ms");
            }
            Thread.Sleep(5000);
        }
    }

Dockerfile

Dockerfile

FROM microsoft/windowsservercore
COPY ConnectionTest.exe /
ENTRYPOINT ConnectionTest.exe

有人知道是什么原因导致从容器访问互联网的延迟吗?

Does anyone know what could be causing the delay in accessing the internet from the container?

推荐答案

这是在此处跟踪的一个已知问题: https://github.com/JiangtianLi/acs-engine/commits/jiangtli-winnat .

This is a known issue tracked here: https://github.com/Azure/acs-engine/issues/519. We are testing a fix for this issue here, but will soon integrate into acs-engine: https://github.com/JiangtianLi/acs-engine/commits/jiangtli-winnat.

这篇关于Azure ACS Kubernetes Windows容器延迟了Internet访问的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！