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diff --git a/devdocs/docker/engine%2Freference%2Fcommandline%2Finfo%2Findex.html b/devdocs/docker/engine%2Freference%2Fcommandline%2Finfo%2Findex.html new file mode 100644 index 00000000..684cda55 --- /dev/null +++ b/devdocs/docker/engine%2Freference%2Fcommandline%2Finfo%2Findex.html @@ -0,0 +1,186 @@ +<h1>docker info</h1> <p><br></p> <p>Display system-wide information</p> <h2 id="usage">Usage</h2> <div class="highlight"><pre class="highlight" data-language="">$ docker info [OPTIONS] +</pre></div> <p>Refer to the <a href="#options">options section</a> for an overview of available <a href="#options"><code class="language-plaintext highlighter-rouge">OPTIONS</code></a> for this command.</p> <h2 id="description">Description</h2> <p name="extended-description">This command displays system wide information regarding the Docker installation. Information displayed includes the kernel version, number of containers and images. The number of images shown is the number of unique images. The same image tagged under different names is counted only once.</p> <p>If a format is specified, the given template will be executed instead of the default format. Go’s <a href="https://golang.org/pkg/text/template/">text/template</a> package describes all the details of the format.</p> <p>Depending on the storage driver in use, additional information can be shown, such as pool name, data file, metadata file, data space used, total data space, metadata space used, and total metadata space.</p> <p>The data file is where the images are stored and the metadata file is where the meta data regarding those images are stored. When run for the first time Docker allocates a certain amount of data space and meta data space from the space available on the volume where <code class="language-plaintext highlighter-rouge">/var/lib/docker</code> is mounted.</p> <p>For example uses of this command, refer to the <a href="#examples">examples section</a> below.</p> <h2 id="options">Options</h2> <table> <thead> <tr> <td>Name, shorthand</td> <td>Default</td> <td>Description</td> </tr> </thead> <tbody> <tr> <td> +<code class="language-plaintext highlighter-rouge">--format</code> , <code class="language-plaintext highlighter-rouge">-f</code> +</td> <td></td> <td>Format the output using the given Go template</td> </tr> </tbody> </table> <h2 id="examples">Examples</h2> <h3 id="show-output">Show output</h3> <p>The example below shows the output for a daemon running on Red Hat Enterprise Linux, using the <code class="language-plaintext highlighter-rouge">devicemapper</code> storage driver. As can be seen in the output, additional information about the <code class="language-plaintext highlighter-rouge">devicemapper</code> storage driver is shown:</p> <div class="highlight"><pre class="highlight" data-language="">$ docker info + +Client: + Context: default + Debug Mode: false + +Server: + Containers: 14 + Running: 3 + Paused: 1 + Stopped: 10 + Images: 52 + Server Version: 1.10.3 + Storage Driver: devicemapper + Pool Name: docker-202:2-25583803-pool + Pool Blocksize: 65.54 kB + Base Device Size: 10.74 GB + Backing Filesystem: xfs + Data file: /dev/loop0 + Metadata file: /dev/loop1 + Data Space Used: 1.68 GB + Data Space Total: 107.4 GB + Data Space Available: 7.548 GB + Metadata Space Used: 2.322 MB + Metadata Space Total: 2.147 GB + Metadata Space Available: 2.145 GB + Udev Sync Supported: true + Deferred Removal Enabled: false + Deferred Deletion Enabled: false + Deferred Deleted Device Count: 0 + Data loop file: /var/lib/docker/devicemapper/devicemapper/data + Metadata loop file: /var/lib/docker/devicemapper/devicemapper/metadata + Library Version: 1.02.107-RHEL7 (2015-12-01) + Execution Driver: native-0.2 + Logging Driver: json-file + Plugins: + Volume: local + Network: null host bridge + Kernel Version: 3.10.0-327.el7.x86_64 + Operating System: Red Hat Enterprise Linux Server 7.2 (Maipo) + OSType: linux + Architecture: x86_64 + CPUs: 1 + Total Memory: 991.7 MiB + Name: ip-172-30-0-91.ec2.internal + ID: I54V:OLXT:HVMM:TPKO:JPHQ:CQCD:JNLC:O3BZ:4ZVJ:43XJ:PFHZ:6N2S + Docker Root Dir: /var/lib/docker + Debug Mode: false + Username: gordontheturtle + Registry: https://index.docker.io/v1/ + Insecure registries: + myinsecurehost:5000 + 127.0.0.0/8 +</pre></div> <h3 id="show-debugging-output">Show debugging output</h3> <p>Here is a sample output for a daemon running on Ubuntu, using the overlay2 storage driver and a node that is part of a 2-node swarm:</p> <div class="highlight"><pre class="highlight" data-language="">$ docker --debug info + +Client: + Context: default + Debug Mode: true + +Server: + Containers: 14 + Running: 3 + Paused: 1 + Stopped: 10 + Images: 52 + Server Version: 1.13.0 + Storage Driver: overlay2 + Backing Filesystem: extfs + Supports d_type: true + Native Overlay Diff: false + Logging Driver: json-file + Cgroup Driver: cgroupfs + Plugins: + Volume: local + Network: bridge host macvlan null overlay + Swarm: active + NodeID: rdjq45w1op418waxlairloqbm + Is Manager: true + ClusterID: te8kdyw33n36fqiz74bfjeixd + Managers: 1 + Nodes: 2 + Orchestration: + Task History Retention Limit: 5 + Raft: + Snapshot Interval: 10000 + Number of Old Snapshots to Retain: 0 + Heartbeat Tick: 1 + Election Tick: 3 + Dispatcher: + Heartbeat Period: 5 seconds + CA Configuration: + Expiry Duration: 3 months + Root Rotation In Progress: false + Node Address: 172.16.66.128 172.16.66.129 + Manager Addresses: + 172.16.66.128:2477 + Runtimes: runc + Default Runtime: runc + Init Binary: docker-init + containerd version: 8517738ba4b82aff5662c97ca4627e7e4d03b531 + runc version: ac031b5bf1cc92239461125f4c1ffb760522bbf2 + init version: N/A (expected: v0.13.0) + Security Options: + apparmor + seccomp + Profile: default + Kernel Version: 4.4.0-31-generic + Operating System: Ubuntu 16.04.1 LTS + OSType: linux + Architecture: x86_64 + CPUs: 2 + Total Memory: 1.937 GiB + Name: ubuntu + ID: H52R:7ZR6:EIIA:76JG:ORIY:BVKF:GSFU:HNPG:B5MK:APSC:SZ3Q:N326 + Docker Root Dir: /var/lib/docker + Debug Mode: true + File Descriptors: 30 + Goroutines: 123 + System Time: 2016-11-12T17:24:37.955404361-08:00 + EventsListeners: 0 + Http Proxy: http://test:test@proxy.example.com:8080 + Https Proxy: https://test:test@proxy.example.com:8080 + No Proxy: localhost,127.0.0.1,docker-registry.somecorporation.com + Registry: https://index.docker.io/v1/ + WARNING: No swap limit support + Labels: + storage=ssd + staging=true + Experimental: false + Insecure Registries: + 127.0.0.0/8 + Registry Mirrors: + http://192.168.1.2/ + http://registry-mirror.example.com:5000/ + Live Restore Enabled: false +</pre></div> <p>The global <code class="language-plaintext highlighter-rouge">-D</code> option causes all <code class="language-plaintext highlighter-rouge">docker</code> commands to output debug information.</p> <h3 id="format-the-output">Format the output</h3> <p>You can also specify the output format:</p> <div class="highlight"><pre class="highlight" data-language="">$ docker info --format '{{json .}}' + +{"ID":"I54V:OLXT:HVMM:TPKO:JPHQ:CQCD:JNLC:O3BZ:4ZVJ:43XJ:PFHZ:6N2S","Containers":14, ...} +</pre></div> <h3 id="run-docker-info-on-windows">Run <code class="language-plaintext highlighter-rouge">docker info</code> on Windows</h3> <p>Here is a sample output for a daemon running on Windows Server 2016:</p> <div class="highlight"><pre class="highlight" data-language="">E:\docker>docker info +Client: + Context: default + Debug Mode: false + +Server: + Containers: 1 + Running: 0 + Paused: 0 + Stopped: 1 + Images: 17 + Server Version: 1.13.0 + Storage Driver: windowsfilter + Windows: + Logging Driver: json-file + Plugins: + Volume: local + Network: nat null overlay + Swarm: inactive + Default Isolation: process + Kernel Version: 10.0 14393 (14393.206.amd64fre.rs1_release.160912-1937) + Operating System: Windows Server 2016 Datacenter + OSType: windows + Architecture: x86_64 + CPUs: 8 + Total Memory: 3.999 GiB + Name: WIN-V0V70C0LU5P + ID: NYMS:B5VK:UMSL:FVDZ:EWB5:FKVK:LPFL:FJMQ:H6FT:BZJ6:L2TD:XH62 + Docker Root Dir: C:\control + Debug Mode: false + Registry: https://index.docker.io/v1/ + Insecure Registries: + 127.0.0.0/8 + Registry Mirrors: + http://192.168.1.2/ + http://registry-mirror.example.com:5000/ + Live Restore Enabled: false +</pre></div> <h2 id="warnings-about-kernel-support">Warnings about kernel support</h2> <p>If your operating system does not enable certain capabilities, you may see warnings such as one of the following, when you run <code class="language-plaintext highlighter-rouge">docker info</code>:</p> <pre data-language="">WARNING: Your kernel does not support swap limit capabilities. Limitation discarded. +</pre> <pre data-language="">WARNING: No swap limit support +</pre> <p>You can ignore these warnings unless you actually need the ability to <a href="https://docs.docker.com/config/containers/resource_constraints/">limit these resources</a>, in which case you should consult your operating system’s documentation for enabling them. <a href="../../../install/linux-postinstall/index#your-kernel-does-not-support-cgroup-swap-limit-capabilities">Learn more</a>.</p> <div class="_attribution"> + <p class="_attribution-p"> + © 2019 Docker, Inc.<br>Licensed under the Apache License, Version 2.0.<br>Docker and the Docker logo are trademarks or registered trademarks of Docker, Inc. in the United States and/or other countries.<br>Docker, Inc. and other parties may also have trademark rights in other terms used herein.<br> + <a href="https://docs.docker.com/engine/reference/commandline/info/" class="_attribution-link">https://docs.docker.com/engine/reference/commandline/info/</a> + </p> +</div> |