Get CE Docker For Mac System requirements. Docker for Mac works on OS X El Capitan 10.11 and newer macOS releases.
Export DOCKERHOST =unix:///var/run/docker.sock How do I connect from a container to a service on the host? The Mac has a changing IP address (or none if you have no network access).
Our current recommendation is to attach an unused IP to the lo0 interface on the Mac so that containers can connect to this address. For a full explanation and examples, see under in the Networking topic.
How do I connect to a container from the Mac? Our current recommendation is to publish a port, or to connect from another container. This is what you need to do even on Linux if the container is on an overlay network, not a bridge network, as these are not routed. For a full explanation and examples, see under in the Networking topic.
How do I add custom CA certificates? Starting with Docker for Mac Beta 27 and Stable 1.12.3, all trusted certificate authorities (CAs) (root or intermediate) are supported. For full information on adding server and client side certs, see in the Getting Started topic. How do I add client certificates? Starting with Docker for Mac 17.06.0-ce, you do not need to push your certificates with git commands anymore. You can put your client certificates in /.docker/certs.d/:/client.cert and /.docker/certs.d/:/client.key. For full information on adding server and client side certs, see in the Getting Started topic.
Can I pass through a USB device to a container? Unfortunately it is not possible to pass through a USB device (or a serial port) to a container. For use cases requiring this, we recommend the use of. Disk Usage What is the disk image? The containers and images are stored in a disk image named Docker.raw or Docker.qcow2 depending on your settings (see below). By default, the disk image is stored in /Library/Containers/com.docker.docker/Data/vms/0. Qcow2 or Raw?
Starting with High Sierra with Apple Filesystem (APFS) enabled, Docker uses disk images in the “raw” format ( Docker.raw), otherwise in the Qcow2 format ( Docker.qcow2). Docker.raw consumes an insane amount of disk space! This is an illusion. Docker uses the raw format on Macs running the Apple Filesystem (APFS).
APFS supports sparse files, which compress long runs of zeroes representing unused space. The output of ls is misleading, because it lists the logical size of the file rather than its physical size.
To see the physical size, add the -ks switch; to see the logical size in human readable form, add -lh. $ du -h Docker.raw 2,2G Docker.raw How do I reduce the size of Docker.qcow2? If your Docker for Mac uses the Qcow format, the is Docker.qcow2. This file grows on-demand up to a default maximum file size of 64GiB.
In Docker 1.12 the only way to free space on the host is to delete this file and restart the app. Unfortunately this removes all images and containers. In Docker 1.13 there is preliminary support for “TRIM” to non-destructively free space on the host. First free space within the Docker.qcow2 by removing unneeded containers and images with the following commands:. docker ps -a: list all containers. docker image ls: list all images.
docker system prune: (new in 1.13): deletes all stopped containers, all volumes not used by at least one container, and all images without at least one referring container. Note the Docker.qcow2 does not shrink in size immediately.
In 1.13 a background cron job runs fstrim every 15 minutes. If the space needs to be reclaimed sooner, run this command.
$ docker run -rm -it -privileged -pid =host walkerlee/nsenter -t 1 -m -u -i -n fstrim /var Once the fstrim has completed, restart the app. When the app shuts down, it compacts the file and free up space.
The app takes longer than usual to restart because it must wait for the compaction to complete. For background conversation thread on this, see on Docker for Mac GitHub issues. Components of Docker for Mac What is HyperKit? HyperKit is a hypervisor built on top of the Hypervisor.framework in macOS. It runs entirely in userspace and has no other dependencies. We use HyperKit to eliminate the need for other VM products, such as Oracle VirtualBox or VMWare Fusion.
What is the benefit of HyperKit? It is thinner than VirtualBox and VMWare fusion, and the version we include is tailor made for Docker workloads on the Mac. Why is com.docker.vmnetd running after I quit the app?
The privileged helper process com.docker.vmnetd is started by launchd and runs in the background. The process does not consume any resources unless Docker.app connects to it, so it’s safe to ignore.
Expected behavior To keep working. Arnobeck, This case causes me to ask more questions than provide possible answers; it's similar to. As a first step, did you try the docker stop command after the hang, and then the docker restart command to see if that reduced your hyperkit/CPU usage, and to see if it cleared the hang?. Did you try rebooting your OS?. Did you try commencing a new diagnostic process?.
Did you try a force quit of both Docker and Hyperkit to recover (via Docker-for-Mac). Did you ever have the opportunity to run $ ls -l -/Library/Containers/com.docker.docker/Data/com.docker.driver.amd64-Linux/Docker. If so, what did it give? Using external volumes might be a resolution, but it would be helpful to know if you received any error messages prior to the hang?