Connect to MySQL in a docker container (Vagrant on Windows/VirtualBox) - mysql

Question

I am trying to create a virtualised dev environment on Windows using Vagrant and Docker (as are a lot of people). The problem I have is that I cannot connect (or I dont understand how to) from MySQL Workbench running on my Windows laptop to my MySQL DB in a Docker container in Boot2Docker. This is how I visualise the connection:
MySQL Work bench -> 3306 -> Boot2Docker -> 3306 -> Docker -> MySql
However I cannot connect to the DB from MySQLWorkbench. I have tried connection to the Boot2Docker host 10.0.2.15 on 3306 and tcp over ssh using the private key of the Boot2Docker box ".vagrant\machines\dockerhost\virtualbox\id"
What am I doing wrong/what have I misunderstood.
My Vagrantfile:
ENV['VAGRANT_DEFAULT_PROVIDER'] = 'docker'
DOCKER_HOST_NAME = "dockerhost"
DOCKER_HOST_VAGRANTFILE = "./host/Vagrantfile"
Vagrant.configure("2") do |config|
config.vm.network "forwarded_port", guest: 3306, host: 3306
config.vm.define "mysql" do |v|
v.vm.provider "docker" do |d|
d.image = "mysql"
d.env = {
:MYSQL_ROOT_PASSWORD => "root",
:MYSQL_DATABASE => "dockertest",
:MYSQL_USER => "dockertest",
:MYSQL_PASSWORD => "docker"
}
d.ports =["3306:3306"]
d.remains_running = "true"
d.vagrant_machine = "#{DOCKER_HOST_NAME}"
d.vagrant_vagrantfile = "#{DOCKER_HOST_VAGRANTFILE}"
end
end
end
My hosts/Vagrantfile (describing my Boot2docker host) is:
FORWARD_DOCKER_PORTS='true'
Vagrant.configure(2) do |config|
config.vm.provision "docker"
# The following line terminates all ssh connections. Therefore
# Vagrant will be forced to reconnect.
# That's a workaround to have the docker command in the PATH
#Clear any existing ssh connections
####NOTE: ps aux seems to give variable results depending on run -> process number can be ####first #or second causing provision to fail!!!
config.vm.provision "clear-ssh", type: "shell", inline:
"ps aux | grep 'sshd:' | awk '{print $1}' | xargs kill"
# "ps aux | grep 'sshd:' | awk '{print $2}' | xargs kill"
config.vm.define "dockerhost"
config.vm.box = "dduportal/boot2docker"
config.vm.network "forwarded_port",guest: 8080, host: 8080
config.vm.provider "virtualbox" do |vb|
vb.name = "dockerhost"
end
end

Answer 1

Solved. As I suspected the ports were not getting forwarded between the host machine and the docker host. The solution is to move the port forwarding config line:
config.vm.network "forwarded_port", guest: 3306, host: 3306
into the docker host Vagrant file. MySQL Workbench on the Windows host can then connect on localhost:3306.