Bad certificate error when joining swarm

Docker Desktop
1

I am following the documentation

but during the Initialize the swarm and add nodes section, I get an cryptic error:

"Error response from daemon: rpc error: code = Unavailable desc = all SubConns are in TransientFailure, latest connection error: connection error: desc = transport: authentication handshake failed: remote error: tls: bad certificate"

Below is the full command line sequence:

> docker-machine ls
NAME    ACTIVE   DRIVER   STATE     URL   SWARM   DOCKER    ERRORS
myvm1   -        hyperv   Running   tcp://10.0.0.2:2376  v18.06.1-ce
myvm2   -        hyperv   Running   tcp://10.0.0.3:2376  v18.06.1-ce

> docker-machine ssh myvm1 "docker swarm init --advertise-addr 10.0.0.2:2376"
Swarm initialized: current node (tjwygiuyihwztrgqumhrbhupw) is now a manager.

To add a worker to this swarm, run the following command:

    docker swarm join --token SWMTKN-1-2y6it3299chbm46do2jbk1yj9csmv021zlcwi2yhxo2ep1i2jg-2grqwx68c6xe4tpfpk9f3r2x6 10.0.0.2:2376

To add a manager to this swarm, run 'docker swarm join-token manager' and follow the instructions.

> docker-machine ssh myvm2 "docker swarm join --token SWMTKN-1-2y6it3299chbm46do2jbk1yj9csmv021zlcwi2yhxo2ep1i2jg-2grqwx68c6xe4tpfpk9f3r2x6 10.0.0.2:2376"

Error response from daemon: rpc error: code = Unavailable desc = all SubConns are in TransientFailure, latest connection error: connection error: desc = "transport: authentication handshake failed: remote error: tls: bad certificate"

exit status 1
2

Iā€™ve seen this error before. I donā€™t think it comes from ā€˜docker swarm joinā€™. I think the error comes from connecting to the docker machine myvm2. Does this have the same error?: docker-machine ssh myvm2

3

I have the same error exactly and I have seen this query posed in a few places with no reply. Iā€™m running the latest version of Docker for Mac, the latest VMBox download. Iā€™d love to resolve this if anyone can help please?

I tried killing and RM the VMs and recreating them from scratch, but get the same problem each time.

4

check out this forum post

5

Had the same problem, it started working when I changed the advertise/listen port to 2377

3 Likes
6

The instructions state:

"$ docker-machine ssh myvm2 ā€œdocker swarm join
ā€“token ā€˜tokenā€™
ā€˜ipā€™:2377ā€

This node joined a swarm as a worker."

note that the port was updated to 2377, you have it at 2376!

2 Likes
7

Thanks. Worked like a charm.

8

It works when I correct 2376 to 2377.
Thanks a lot.

9

thanks :slight_smile:

10

Thanks, it worked correctly