def handler(*args, **kwargs):
try:
return func(*args, **kwargs)
except DockerMachineCannotConnectToDockerError:
log = get_logger_for_func(func)
log.info('It looks like the Docker machine environment variables are not set correctly.')
log.info('Let me try to reset the Docker machine environment variables..')
docker_machine_vm_name = docker_machine.vm_name()
[docker_machine.set_env(env[0], env[1]) for env in docker_machine.envs(docker_machine_vm_name)]
try:
terminal.docker_info()
log.warning('To set the environment variables for each terminal session '
'follow the instructions of the command:')
log.warning(' docker-machine env {}'.format(docker_machine_vm_name))
return func(*args, **kwargs)
except (AttributeError, CalledProcessError):
log.error('Docker still cannot connect to the Docker machine VM.')
log.error('Please set the docker environment variables.')
log.error('Afterwards verify that docker is up and running with: docker info')
def validate_docker_vm(vm_type):
log = logging.getLogger(__name__)
if vm_type is DockerVmType.DOCKER_ENGINE:
try:
info = terminal.docker_info()
existing_ram, has_sufficient_ram = docker.ram_check(info)
existing_cpu, has_sufficient_cpu = docker.cpu_check(info)
if not has_sufficient_ram or not has_sufficient_cpu:
if not has_sufficient_ram:
log.warning('Docker has insufficient RAM of {} GiB - please increase to a minimum of {} GiB'
.format(existing_ram, docker.DEFAULT_DOCKER_RAM_SIZE))
if not has_sufficient_cpu:
log.warning('Docker has an insufficient no. of CPUs {} - please increase to a minimum of {} CPUs'
.format(existing_cpu, docker.DEFAULT_DOCKER_CPU_COUNT))
except (AttributeError, CalledProcessError):
log.error('Docker native is installed but not running.')
log.error('Please start Docker with one of the Docker flavors based on your OS:')
log.error(' Linux: Docker service')
log.error(' MacOS: Docker for Mac')
log.error(' Windows: Docker for Windows')
log.error('A successful Docker startup can be verified with: docker info')
exit(1)
elif vm_type is DockerVmType.DOCKER_MACHINE:
docker_machine_vm_name = docker_machine.vm_name()
is_docker_machine_vm_installed = docker_machine.vm_install_check(docker_machine_vm_name)
if not is_docker_machine_vm_installed:
log.info('Creating Docker machine VM {}'.format(docker_machine_vm_name))
log.info('This will take a few minutes - please be patient..')
terminal.docker_machine_create_vm(docker_machine_vm_name)
is_docker_machine_started = docker_machine.running_check(docker_machine_vm_name)
if not is_docker_machine_started:
log.info('Starting Docker machine VM {}'.format(docker_machine_vm_name))
terminal.docker_machine_start_vm(docker_machine_vm_name)
existing_ram, has_sufficient_ram = docker_machine.ram_check(docker_machine_vm_name)
existing_cpu, has_sufficient_cpu = docker_machine.cpu_check(docker_machine_vm_name)
if not has_sufficient_ram or not has_sufficient_cpu:
if not has_sufficient_ram:
log.warning('Docker machine VM {} has insufficient RAM of {} MB - '
'increasing to the minimum of {} MB'
.format(docker_machine_vm_name,
existing_ram,
docker_machine.DEFAULT_DOCKER_MACHINE_RAM_SIZE))
if not has_sufficient_cpu:
log.warning('Docker machine VM {} has an insufficient no. of CPUs {} - increasing to the minimum of {} CPU'
.format(docker_machine_vm_name, existing_cpu, docker_machine.DEFAULT_DOCKER_MACHINE_CPU_COUNT))
log.info('Stopping Docker machine VM {}'.format(docker_machine_vm_name))
terminal.docker_machine_stop_vm(docker_machine_vm_name)
if not has_sufficient_ram:
log.info('Increasing Docker machine VM {} RAM to {} MB'
.format(docker_machine_vm_name, docker_machine.DEFAULT_DOCKER_MACHINE_RAM_SIZE))
terminal.vbox_manage_increase_ram(docker_machine_vm_name,
docker_machine.DEFAULT_DOCKER_MACHINE_RAM_SIZE)
if not has_sufficient_cpu:
log.info('Increasing Docker machine VM {} no. of CPUs to {}'
.format(docker_machine_vm_name, docker_machine.DEFAULT_DOCKER_MACHINE_CPU_COUNT))
terminal.vbox_manage_increase_cpu(docker_machine_vm_name,
docker_machine.DEFAULT_DOCKER_MACHINE_CPU_COUNT)
log.info('Starting Docker machine VM {}'.format(docker_machine_vm_name))
terminal.docker_machine_start_vm(docker_machine_vm_name)
try:
terminal.docker_info()
except (AttributeError, CalledProcessError):
log.info('It looks like the Docker machine environment variables are not set correctly.')
log.info('Let me try to reset the Docker machine environment variables..')
[docker_machine.set_env(env[0], env[1]) for env in docker_machine.envs(docker_machine_vm_name)]
try:
terminal.docker_info()
log.warning('To set the environment variables for each terminal session '
'follow the instructions of the command:')
log.warning(' docker-machine env {}'.format(docker_machine_vm_name))
except (AttributeError, CalledProcessError):
log.error('Docker still cannot connect to the Docker machine VM.')
log.error('Please set the docker environment variables.')
log.error('Afterwards verify that docker is up and running with: docker info')
exit(1)
elif vm_type is DockerVmType.NONE:
log.error('Neither Docker native is installed nor the Docker machine environment variables are set.')
log.error('We recommend to use one of following the Docker distributions depending on your OS:')
log.error(' Linux: Docker Engine')
log.error(' MacOS: Docker for Mac')
log.error(' Windows 10+ Professional or Enterprise 64-bit: Docker for Windows')
log.error(' Other Windows: Docker machine via Docker Toolbox')
log.error('For more information checkout: https://www.docker.com/products/overview')
exit(1)
