Errors after changing registration IP, and back

Archive Rancher 1.x
1

Hi.

Another possible connectivity problem? I have changed the registration IP to that of a load balancer (AWS), but reverted to the elastic IP of the rancher again.
Now, on my hosts I can no longer see the CPU, Memory etc. information. I cannot get to any logs and cannot start a console.

There’s nothing in the ranger-agent logs. On the rancher master i see:

time="2015-10-02T13:50:14Z" level=error msg="Error during upgrade: [websocket: could not find connection header with token 'upgrade']" 
2015/10/02 13:50:14 http: multiple response.WriteHeader calls

When trying to view logs, and a pair of the multiple response.WriteHeader calls when viewing a host.

I did try to remove the agent on a host and re-register it to no avail. Adding a new host works, but it suffers from the same issue.

So… did I change anything else? Possibly, as I’ve tried all I could think of to make this work…

Where should I look?

2

Hmm. Updating to v40 solved it…

3

I’m glad updating helped, but for future reference, we did add some more detailed troubleshooting items. Like how to check that host registration is setup okay.

http://docs.rancher.com/rancher/faqs/troubleshooting/

4

The documentation lists this:

sudo docker run -d -e CATTLE_AGENT_IP=<HOST_IP> --privileged \ -v /var/run/docker.sock:/var/run/docker.sock \ rancher/agent:v0.8.2 http://SERVER_IP:8080/v1/scripts/xxxx

However, I am trying to figure out what to put for xxxx since I didnt save the original registration url.

Is there a place I can retrieve it?

5

If you click on “Add Host”, under the “Custom” option, it always shows what the docker run command would be to launch rancher/agent.