Rancher/cattle client not working with Docer ver 17.06.2-ce

Rancher 1.x
1

Just added a new host with upgraded docker (upgradded to 17.06.2-ce). The client now fails with
time=“2017-09-22T14:25:01Z” level=fatal msg=“json: cannot unmarshal object into Go value of type []string”

Tried a new version of Rancher server with new version of Docker and got the same results

2

Thanks for the report. Can you please share the exact command you are a running to get that error?

Also, the exact version of rancher (click the version number in bottom left of rancher UI and copy paste all the output.

3

Here is everything I know

On the Rancher server

Component Version
Rancher v1.6.2
Cattle v0.181.4
User Interface v1.6.5
Rancher CLI v0.6.1
Rancher Compose v0.12.5

On the Rancher server

Client:
Version: 17.06.2-ce
API version: 1.30
Go version: go1.8.3
Git commit: cec0b72
Built: Tue Sep 5 19:59:06 2017
OS/Arch: linux/amd64

Server:
Version: 17.06.2-ce
API version: 1.30 (minimum version 1.12)
Go version: go1.8.3
Git commit: cec0b72
Built: Tue Sep 5 20:00:25 2017
OS/Arch: linux/amd64
Experimental: false

On the client machine

Client:
Version: 17.06.2-ce
API version: 1.30
Go version: go1.8.3
Git commit: cec0b72
Built: Tue Sep 5 19:59:06 2017
OS/Arch: linux/amd64

Server:
Version: 17.06.2-ce
API version: 1.30 (minimum version 1.12)
Go version: go1.8.3
Git commit: cec0b72
Built: Tue Sep 5 20:00:25 2017
OS/Arch: linux/amd64
Experimental: false

what is running that gets the error
c3847e918031 rancher/agent:v1.2.2 “/run.sh run” 2 days ago Restarting (1) 27 seconds ago rancher-agent

the rancher command that causes the issue (from add host)

sudo docker run --rm --privileged -v /var/run/docker.sock:/var/run/docker.sock -v /var/lib/rancher:/var/lib/rancher rancher/agent:v1.2.2 http://devdocker07:8080/v1/scripts/257F37725A36470E9C3B:1483142400000:TXF5VlkW33OUEJ61PoM97tzM

4

Looks like you are on Rancher v1.6.2 and 17.06 is only support on v1.6.3 and higher
https://rancher.com/docs/rancher/latest/en/hosts/#supported-docker-versions

5

That fixed the issue. Must complement you guys - this was about the easiest upgrade I had ever performed. A bit scary as I was afraid to loose my data, but easy.

thx

1 Like
6

:scream: :grinning:
Glad to hear it. Thanks!

7

Hi,
I have the same problem, can you share how you proceed to upgrade your rancher server to v1.6.3 ?
Thanks,
F.D

8

Docs for upgrading are here: http://rancher.com/docs/rancher/v1.6/en/upgrading/