Powerstrip not working with swarm cluster

[Pensu]

Hi all,

I have been trying to run powerstrip with a swarm setup. I have one master and one node only. What I want to achieve is:

       docker client

                |

            powerstrip

                |

           swarm deamon

           /          \

       node1          node2

        |               |

      docker          docker

Though I just have the node 1. So, I created the cluster and then ran

$ sudo docker run -d --name powerstrip-slowreq \
           --expose 80 \
           clusterhq/powerstrip-slowreq:v0.0.1
$ sudo docker run -d --name powerstrip \
           -v /var/run/docker.sock:/var/run/docker.sock \
           -v $PWD/powerstrip-demo/adapters.yml:/etc/powerstrip/adapters.yml \
           --link powerstrip-slowreq:slowreq \
           -p 2375:2375 \
           clusterhq/powerstrip:v0.0.1

on swarm manager only. I am running the same powerstrip-slowreq examplt given in the docs. Here are my containers:

vagrant@vagrant-ubuntu-vivid-64:~$ sudo docker ps
CONTAINER ID        IMAGE                                 COMMAND                CREATED             STATUS              PORTS                    NAMES
f1a74df8f0da        clusterhq/powerstrip:v0.0.1           "twistd -noy powerst   43 minutes ago      Up 43 minutes       0.0.0.0:2375->2375/tcp   powerstrip           
01493e977cb1        clusterhq/powerstrip-slowreq:v0.0.1   "python slowreq.py"    About an hour ago   Up About an hour    80/tcp                   powerstrip-slowreq   
a09109652193        swarm                                 "/swarm manage token   About an hour ago   Up About an hour    0.0.0.0:9000->2375/tcp   desperate_rosalind   

It works fine if I am running the docker that is on swarm master node i.e. not the cluster one. In that case I can see the delay of a minute. My question is how do I propagate that to the cluster? According to the example in the docs, I am supposed to use this:

$ time DOCKER_HOST=localhost:2375 docker -H tcp://0.0.0.0:9000 run ubuntu echo hello

But this is not working for obvious reasons as there are two Docker host addresses. Is there any other way to approach this problem? TIA

[lukemarsden]

Hi @Pensu,

Can you describe what you're trying to achieve please?

Running powerstrip in front of swarm has never been a "supported" configuration. I'm curious why you want to do this.

Cheers,
Luke

[Pensu]

Hi @lukemarsden, I am just trying to see if it is possible to to extend swarm-api as we are doing with docker-api using powerstrip. Let's say in this specific example, I want to put some delay before the API reaches swarm-daemon, so that I can give user a chance to cancel.

I am just trying to understand why powerstrip can't be used in this configuration? Or how can I extend it to swarm? Or the only way to do it is to use this configuration:

       docker client
                |
           swarm deamon

           /          \

       node1          node2

         |                |

    powerstrip       powerstrip

        |                |

      docker          docker