Play in a content trust sandbox This page explains how to set up and use a sandbox for experimenting with trust. The sandbox allows you to configure and try trust operations locally without impacting your production images. Before working through this sandbox, you should have read through the trust overview. Prerequisites These instructions assume you are running in Linux or Mac OS X. You can run this sandbox on a local machine or on a virtual machine. You will need to have sudo privileges on y

Docker Remote API v1.19 1. Brief introduction The Remote API has replaced rcli. The daemon listens on unix:///var/run/docker.sock but you can Bind Docker to another host/port or a Unix socket. The API tends to be REST. However, for some complex commands, like attach or pull, the HTTP connection is hijacked to transport stdout, stdin and stderr. When the client API version is newer than the daemon’s, these calls return an HTTP 400 Bad Request error message. 2. Endpoints 2.1 Containers List con

Runtime metrics Docker stats You can use the docker stats command to live stream a container’s runtime metrics. The command supports CPU, memory usage, memory limit, and network IO metrics. The following is a sample output from the docker stats command $ docker stats redis1 redis2 CONTAINER CPU % MEM USAGE / LIMIT MEM % NET I/O BLOCK I/O redis1 0.07% 796 KB / 64 MB 1.21% 788 B / 648 B 3.5

Journald logging driver The journald logging driver sends container logs to the systemd journal. Log entries can be retrieved using the journalctl command, through use of the journal API, or using the docker logs command. In addition to the text of the log message itself, the journald log driver stores the following metadata in the journal with each message: Field Description CONTAINER_ID The container ID truncated to 12 characters. CONTAINER_ID_FULL The full 64-character container ID. CONTAINE

Customize the docker0 bridge The information in this section explains how to customize the Docker default bridge. This is a bridge network named bridge created automatically when you install Docker. Note: The Docker networks feature allows you to create user-defined networks in addition to the default bridge network. By default, the Docker server creates and configures the host system’s docker0 interface as an Ethernet bridge inside the Linux kernel that can pass packets back and forth between

Using PowerShell DSC Windows PowerShell Desired State Configuration (DSC) is a configuration management tool that extends the existing functionality of Windows PowerShell. DSC uses a declarative syntax to define the state in which a target should be configured. More information about PowerShell DSC can be found at http://technet.microsoft.com/en-us/library/dn249912.aspx. Requirements To use this guide you’ll need a Windows host with PowerShell v4.0 or newer. The included DSC configuration scrip

restart Usage: docker-machine restart [arg...] Restart a machine Description: Argument(s) are one or more machine names. Restart a machine. Oftentimes this is equivalent to docker-machine stop; docker-machine start. But some cloud driver try to implement a clever restart which keeps the same ip address. $ docker-machine restart dev Waiting for VM to start...

top Usage: docker top [OPTIONS] CONTAINER [ps OPTIONS] Display the running processes of a container --help Print usage

logs Usage: logs [options] [SERVICE...] Options: --no-color Produce monochrome output. -f, --follow Follow log output -t, --timestamps Show timestamps --tail Number of lines to show from the end of the logs for each container. Displays log output from services.

CentOS Docker runs on CentOS 7.X. An installation on other binary compatible EL7 distributions such as Scientific Linux might succeed, but Docker does not test or support Docker on these distributions. This page instructs you to install using Docker-managed release packages and installation mechanisms. Using these packages ensures you get the latest release of Docker. If you wish to install using CentOS-managed packages, consult your CentOS documentation. Prerequisites Docker requires a 64-bit