Logs and troubleshooting Estimated reading time: 12 minutes Here is information about how to diagnose and troubleshoot problems, send logs and communicate with the Docker for Mac team, use our forums and Knowledge Hub, browse and log issues on GitHub, and find workarounds for known problems. Docker Knowledge Hub Looking for help with Docker for Mac? Check out the for knowledge base articles, FAQs, and technical support for various subscription levels. Diagnose problems, send feedback, and create GitHub issues In-app diagnostics If you encounter problems for which you do not find solutions in this documentation, on, or the, we can help you troubleshoot the log data. Choose → Diagnose & Feedback from the menu bar.
Once the diagnostics are available, you can upload them and obtain a Diagnostic ID, which must be provided when communicating with the Docker team. For more information on our policy regarding personal data you can read. If you click Report an issue, this opens in your web browser in a “create new issue” template, to be completed before submission. Do not forget to copy/paste your diagnostic ID. Diagnosing from the terminal On occasions it is useful to run the diagnostics yourself, for instance if Docker for Mac cannot start. First locate the com.docker.diagnose tool. If you installed Docker for Mac in the Applications directory, then it is /Applications/Docker.app/Contents/MacOS/com.docker.diagnose.
This is why a regular user is not able to talk to the docker daemon. A regular user does not have sufficient permissions to access the socket. It's not able to reach the daemon, so it assumes it's not running and shows this error: Cannot connect to the Docker daemon. Is the docker daemon running on this host? As comments suggested probably Docker daemon is not running. AFAIK, docker is not supported for RHEL 6.4. Check Docker documentation: Red Hat Enterprise Linux 6.5 Installation. You will need 64 bit RHEL 6.5 or later, with a RHEL 6 kernel version 2.6.32-431 or higher as this has specific kernel fixes.
Then to create and upload diagnostics, run. $ show -debug -info -style syslog -last 1d -predicate '$pred' /tmp/logs.txt In the Console app Macs provide a built-in log viewer, named “Console”, which you can use to check Docker logs. The Console lives in /Applications/Utilities; you can search for it with Spotlight Search. To read the Docker app log messages, in the top left corner of the window, type “docker” and press Enter.
Then select the “Any” button that appeared on its left, and select “Process” instead. You can use the Console Log Query to search logs, filter the results in various ways, and create reports. Troubleshooting Make sure certificates are set up correctly Docker for Mac ignores certificates listed under insecure registries, and does not send client certificates to them. Commands like docker run that attempt to pull from the registry produces error messages on the command line, like this.
2017/06/20 18:15:30 http: TLS handshake error from 192.168.203.139:52882: tls: client didn't provide a certificate 2017/06/20 18:15:30 http: TLS handshake error from 192.168.203.139:52883: tls: first record does not look like a TLS handshake For more about using client and server side certificates, see in the Getting Started topic. Docker for Mac does not start if Mac user account and home folder are renamed after installing the app See in the FAQs. Volume mounting requires file sharing for any project directories outside of /Users If you are using mounted volumes and get runtime errors indicating an application file is not found, access to a volume mount is denied, or a service cannot start, such as when using, you might need to enable.
Volume mounting requires shared drives for projects that live outside of the /Users directory. Go to → Preferences → File sharing and share the drive that contains the Dockerfile and volume. Incompatible CPU detected Docker for Mac requires a processor (CPU) that supports virtualization and, more specifically, the. Docker for Mac is only compatible with Macs that have a CPU that supports the Hypervisor framework.
![Cannot Cannot](/uploads/1/2/5/6/125671788/272677960.png)
Most Macs built in 2010 and later support it, as described in the Apple Hypervisor Framework documentation about supported hardware: Generally, machines with an Intel VT-x feature set that includes Extended Page Tables (EPT) and Unrestricted Mode are supported. To check if your Mac supports the Hypervisor framework, run this command in a terminal window. Docker run -d -v /var/run/docker.sock:/var/run/docker.sock -p 127.0.0.1:1234:1234 bobrik/socat TCP-LISTEN:1234,fork UNIX-CONNECT:/var/run/docker.sock and then export DOCKERHOST=tcp://localhost:1234.
There are a number of issues with the performance of directories bind-mounted with osxfs. In particular, writes of small blocks, and traversals of large directories are currently slow. Additionally, containers that perform large numbers of directory operations, such as repeated scans of large directory trees, may suffer from poor performance. Applications that behave in this way include:. rake. ember build.
Symfony. Magento. Zend Framework. PHP applications that use to install dependencies in a vendor folder As a work-around for this behavior, you can put vendor or third-party library directories in Docker volumes, perform temporary file system operations outside of osxfs mounts, and use third-party tools like Unison or rsync to synchronize between container directories and bind-mounted directories. We are actively working on osxfs performance using a number of different techniques. To learn more, see the topic on. If your system does not have access to an NTP server, then after a hibernate the time seen by Docker for Mac may be considerably out of sync with the host.
Furthermore, the time may slowly drift out of sync during use. To manually reset the time after hibernation, run.
Official docker is installed on this Mac El Capitan. While running a bash file, one of the commands is to start the docker daemon if it is not running: $(docker-machine status) 'Stopped' && docker-machine start eval $(docker-machine env) I am guessing it was not running because I got the below output which I was hoping the above code would handle gracefully. What needs to be done for that to happen? Starting 'default'.
![Cannot connect to docker daemon docker for mac download Cannot connect to docker daemon docker for mac download](/uploads/1/2/5/6/125671788/585235510.jpg)
(default) Check network to re-create if needed. (default) Waiting for an IP. Machine 'default' was started. Waiting for SSH to be available. Detecting the provisioner. Started machines may have new IP addresses.
You may need to re-run the `docker-machine env` command. Error checking TLS connection: Error checking and/or regenerating the certs: There was an error validating certificates for host '192.168.99.100:2376': tls: DialWithDialer timed out You can attempt to regenerate them using 'docker-machine regenerate-certs name'.
Be advised that this will trigger a Docker daemon restart which will stop running containers. How ever running the script file the second time, all went well. Docker on OS X (or macOS as it's now called) runs inside a Linux virtual machine, usually using VirtualBox as the hypervisor. So when you start docker using docker-machine start, it will take a little while for the virtual machine to and all of the services on it to start and become available. So to work around this, you could do something like the following: $(docker-machine status) 'Stopped' && docker-machine start sleep 10 eval $(docker-machine env) You may wish to adjust the value passed to sleep if this turns out to be too much or not enough time, as the amount of time it takes for your virtual machine to become available depends on the hardware on your OS X host as well as the virtual hardware allocated to the Docker guest.