Error with Docker daemon for docker installation on Fiware cloud - docker

Question

I am new with the Fiware and docker technologies so I need some help.
I am following the instructions from this link http://simple-docker-hosting-on-fiware-cloud.readthedocs.io/en/v1.0/manuals/install in order to create a docker-host machine on Fiware cloud but when I run the following command:
docker-machine create -d openstack --openstack-flavor-id="2" --openstack-image-name="base_ubuntu_14.04" --openstack-net-name="node-int-net-01" --openstack-floatingip-pool="public-ext-net-01" --openstack-sec-groups="docker-sg" --openstack-ssh-user "ubuntu" docker-host
I receive the following error:
Error creating machine: Error running provisioning: Unable to verify the Docker daemon is listening: Maximum number of retries (10) exceeded
Although, I can see the instance of the docker-host machine on Fiware cloud, but when I run the following command:
eval "$(docker-machine env docker-host)"
the following error comes up:
Error checking TLS connection: Error checking and/or regenerating the certs: There was an error validating certificates for host "147.27.60.136:2376": dial tcp 147.27.60.136:2376: connectex: No connection could be made because the target machine actively refused it.
You can attempt to regenerate them using 'docker-machine regenerate-certs [name]'.
Be advised that this will trigger a Docker daemon restart which might stop running containers.**
I also tried to regenerate the certificates:
docker-machine regenerate-certs docker-host
but I received the following error:
Error getting SSH command to check if the daemon is up: ssh command error:
command : sudo docker version
err : exit status 1
output : Client:
Version: 18.04.0-ce
API version: 1.37
Go version: go1.9.4
Git commit: 3d479c0
Built: Tue Apr 10 18:21:14 2018
OS/Arch: linux/amd64
Experimental: false
Orchestrator: swarm
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?**
Image with the result for the Command: docker-machine ls
What am I doing wrong?
I use docker community edition for windows 10.
The docker version is:
Client:
Version: 18.03.0-ce
API version: 1.37
Go version: go1.9.4
Git commit: 0520e24
Built: Wed Mar 21 23:06:28 2018
OS/Arch: windows/amd64
Experimental: false
Orchestrator: swarm
Server:
Version: 18.03.0-ce
API version: 1.37 (minimum version 1.12)
Go version: go1.9.4
Git commit: 0520e24
Built: Wed Mar 21 23:14:32 2018
OS/Arch: linux/amd64
Experimental: false

Answer 1

First make sure you've opened your docker port (tcp/2376) in your default security group
Let me suggest you using base_ubuntu_16.04 instead of base_ubuntu_14.04
Anyway, it won't run properly at first. There is a problem with the latests versions of docker and docker-machine. As a workaround, after running your docker-machine command, you can do this to fix the problem:
ssh docker-host 'sudo apt-get -y install linux-image-extra-$(uname -r) linux-image-extra-virtual ; sudo modprobe aufs ; sudo service docker start'
However, you might find furhter problems due to MTU configuration in your docker host. To solve them, you can lower your MTU with these commands:
docker-machine ssh docker-host "sudo sed -i 's/--label provider=openstack/--label provider=openstack\n--mtu=1400/g' /etc/default/docker"
docker-machine ssh docker-host "sudo service docker restart"
docker-machine ssh docker-host "sudo ip link set mtu 1400 dev docker0"