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azuremarathonazure-virtual-networkdcosazure-container-service

Azure Cloud App ERR_CONNECTION_TIMED_OUT

I would like to deploy a container based app in azure container service, and followed this tutorial.

https://learn.microsoft.com/en-us/azure/container-service/dcos-swarm/container-service-mesos-marathon-ui

Everything went well except that the public url is showing ERR_CONNECTION_TIMED_OUT in browser.

When pinging the url, able to get the IP address but pings are showing as timed out.

I have verified agents LB with port 80 as allowed in the rules list.

How to access the application through public web ?

Solution

  • When pinging the url, able to get the IP address but pings are showing as timed out.

    Azure disable ICMP package, so you could not ping Azure public IP address. You could use telnet or tcping to check whether your service is listening.

    Do you bind port 80 of the container to port 80 of the DC/OS agent? If I don't do this, I get same error log with you. Please refer to this link.

    enter image description here

    enter image description here

    Note: I test in my lab, if I did not do this, nginx service will listen on other port. I ssh to the agent VM.

    root@dcos-agent-public-65818314000001:~# docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                  NAMES
7e8091548413        nginx               "nginx -g 'daemon off"   14 minutes ago      Up 14 minutes       0.0.0.0:4912->80/tcp   mesos-d7be0314-6be2-467b-8376-433a05033b17-S1.42edeac0-2aa3-4ecd-acaa-17d5f2f4ac19

    The service is listening on port 4912 not 80.

    If you do this step, I suggest you also could ssh to agent VM(same user name and private key) and execute docker ps .