Otdfbt

I am trying to use docker-compose/docker inside a vagrant machine hosted on OS X. Running 'docker-compose up' always fails with

mysqld: Can't create/write to file '/var/lib/mysql/is_writable' (Errcode: 13 - Permission denied)

I can manually create the file just fine, however. (Using touch and sudo -g vagrant touch)

Does anyone know where to look to debug this?

Log:

db_1 | Initializing database
db_1 | mysqld: Can't create/write to file '/var/lib/mysql/is_writable' (Errcode: 13 - Permission denied)
db_1 | 2016-05-21T22:55:38.877522Z 0 [ERROR] --initialize specified but the data directory exists and is not writable. Aborting.
db_1 | 2016-05-21T22:55:38.877799Z 0 [ERROR] Aborting

My docker-compose.yaml:

version: '2' services: db:
 privileged: true
 image: mysql
 volumes:
 - "./.data/db:/var/lib/mysql"
 restart: always
 environment:
 MYSQL_ROOT_PASSWORD: wordpress
 MYSQL_DATABASE: wordpress
 MYSQL_USER: wordpress
 MYSQL_PASSWORD: wordpress

My Vagrantfile:

# -*- mode: ruby -*-
# vi: set ft=ruby :

# All Vagrant configuration is done below. The "2" in Vagrant.configure
# configures the configuration version (we support older styles for
# backwards compatibility). Please don't change it unless you know what
# you're doing.
Vagrant.configure(2) do |config|
 # The most common configuration options are documented and commented below.
 # For a complete reference, please see the online documentation at
 # https://docs.vagrantup.com.

 # Every Vagrant development environment requires a box. You can search for
 # boxes at https://atlas.hashicorp.com/search.
 config.vm.box = "ubuntu/trusty64"
 # config.vm.box = "debian/jessie64"

 # Disable automatic box update checking. If you disable this, then
 # boxes will only be checked for updates when the user runs
 # `vagrant box outdated`. This is not recommended.
 # config.vm.box_check_update = false

 # Create a forwarded port mapping which allows access to a specific port
 # within the machine from a port on the host machine. In the example below,
 # accessing "localhost:8080" will access port 80 on the guest machine.
 # config.vm.network "forwarded_port", guest: 80, host: 8080

 # Create a private network, which allows host-only access to the machine
 # using a specific IP.
 # config.vm.network "private_network", ip: "192.168.33.10"

 # Create a public network, which generally matched to bridged network.
 # Bridged networks make the machine appear as another physical device on
 # your network.
 # config.vm.network "public_network"

 # Share an additional folder to the guest VM. The first argument is
 # the path on the host to the actual folder. The second argument is
 # the path on the guest to mount the folder. And the optional third
 # argument is a set of non-required options.
 # config.vm.synced_folder "../data", "/vagrant_data"

 # Provider-specific configuration so you can fine-tune various
 # backing providers for Vagrant. These expose provider-specific options.
 # Example for VirtualBox:
 #
 # config.vm.provider "virtualbox" do |vb|
 # # Display the VirtualBox GUI when booting the machine
 # vb.gui = true
 #
 # # Customize the amount of memory on the VM:
 # vb.memory = "1024"
 # end
 #
 # View the documentation for the provider you are using for more
 # information on available options.

 # Define a Vagrant Push strategy for pushing to Atlas. Other push strategies
 # such as FTP and Heroku are also available. See the documentation at
 # https://docs.vagrantup.com/v2/push/atlas.html for more information.
 # config.push.define "atlas" do |push|
 # push.app = "YOUR_ATLAS_USERNAME/YOUR_APPLICATION_NAME"
 # end

 # Enable provisioning with a shell script. Additional provisioners such as
 # Puppet, Chef, Ansible, Salt, and Docker are also available. Please see the
 # documentation for more information about their specific syntax and use.
 # config.vm.provision "shell", inline: <<-SHELL
 # sudo apt-get update
 # sudo apt-get install -y apache2
 # SHELL

 #####################################################################
 # Custom Configuration

 config.vm.define "dev" do |dev|

 # if File.directory?("~/Dev")
 # dev.vm.synced_folder "~/Dev", "/vagrant/Dev"
 # end
 # custom: above does not work for symlinks
 dev.vm.synced_folder "~/Dev", "/home/vagrant/Dev"
# dev.vm.synced_folder "~/Dev/docker", "/docker"

 dev.vm.provider "virtualbox" do |vb|
 vb.gui = false
 vb.memory = "2048"
 end

 dev.vm.provision "shell",
 run: "always",
 inline: <<-SHELL
 pushd /vagrant/conf
 chmod 755 setup.sh && ./setup.sh
 popd
 SHELL

 dev.ssh.forward_x11 = true

 # Install the caching plugin if you want to take advantage of the cache
 # $ vagrant plugin install vagrant-cachier
 if Vagrant.has_plugin?("vagrant-cachier")
 # Configure cached packages to be shared between instances of the same base box.
 # More info on http://fgrehm.viewdocs.io/vagrant-cachier/usage
 config.cache.scope = :machine
 end
 end

end

Can you confirm your docker version?

I was getting the same error, but after I updated to the latest version it started to work.

I am now running:

$ docker --version
Docker version 1.12.0-rc2, build 906eacd, experimental

$ docker-compose --version
docker-compose version 1.8.0-rc1, build 9bf6bc6

Hope this helps with your problem.