github.com/kim0/docker@v0.6.2-0.20161130212042-4addda3f07e7/man/docker-info.1.md (about) 1 % DOCKER(1) Docker User Manuals 2 % Docker Community 3 % JUNE 2014 4 # NAME 5 docker-info - Display system-wide information 6 7 # SYNOPSIS 8 **docker info** 9 [**--help**] 10 [**-f**|**--format**[=*FORMAT*]] 11 12 # DESCRIPTION 13 This command displays system wide information regarding the Docker installation. 14 Information displayed includes the kernel version, number of containers and images. 15 The number of images shown is the number of unique images. The same image tagged 16 under different names is counted only once. 17 18 If a format is specified, the given template will be executed instead of the 19 default format. Go's **text/template** package 20 describes all the details of the format. 21 22 Depending on the storage driver in use, additional information can be shown, such 23 as pool name, data file, metadata file, data space used, total data space, metadata 24 space used, and total metadata space. 25 26 The data file is where the images are stored and the metadata file is where the 27 meta data regarding those images are stored. When run for the first time Docker 28 allocates a certain amount of data space and meta data space from the space 29 available on the volume where `/var/lib/docker` is mounted. 30 31 # OPTIONS 32 **--help** 33 Print usage statement 34 35 **-f**, **--format**="" 36 Format the output using the given Go template 37 38 # EXAMPLES 39 40 ## Display Docker system information 41 42 Here is a sample output for a daemon running on Ubuntu, using the overlay 43 storage driver: 44 45 $ docker -D info 46 Containers: 14 47 Running: 3 48 Paused: 1 49 Stopped: 10 50 Images: 52 51 Server Version: 1.12.0-dev 52 Storage Driver: overlay 53 Backing Filesystem: extfs 54 Logging Driver: json-file 55 Cgroup Driver: cgroupfs 56 Plugins: 57 Volume: local 58 Network: bridge null host overlay 59 Swarm: 60 NodeID: 0gac67oclbxq7 61 IsManager: YES 62 Managers: 2 63 Nodes: 2 64 Runtimes: default 65 Default Runtime: default 66 Security Options: apparmor seccomp 67 Kernel Version: 4.4.0-21-generic 68 Operating System: Ubuntu 16.04 LTS 69 OSType: linux 70 Architecture: x86_64 71 CPUs: 24 72 Total Memory: 62.86 GiB 73 Name: docker 74 ID: I54V:OLXT:HVMM:TPKO:JPHQ:CQCD:JNLC:O3BZ:4ZVJ:43XJ:PFHZ:6N2S 75 Docker Root Dir: /var/lib/docker 76 Debug mode (client): true 77 Debug mode (server): true 78 File Descriptors: 59 79 Goroutines: 159 80 System Time: 2016-04-26T10:04:06.14689342-04:00 81 EventsListeners: 0 82 Http Proxy: http://test:test@localhost:8080 83 Https Proxy: https://test:test@localhost:8080 84 No Proxy: localhost,127.0.0.1,docker-registry.somecorporation.com 85 Username: svendowideit 86 Registry: https://index.docker.io/v1/ 87 WARNING: No swap limit support 88 Labels: 89 storage=ssd 90 staging=true 91 Insecure registries: 92 myinsecurehost:5000 93 127.0.0.0/8 94 95 The global `-D` option tells all `docker` commands to output debug information. 96 97 The example below shows the output for a daemon running on Red Hat Enterprise Linux, 98 using the devicemapper storage driver. As can be seen in the output, additional 99 information about the devicemapper storage driver is shown: 100 101 $ docker info 102 Containers: 14 103 Running: 3 104 Paused: 1 105 Stopped: 10 106 Untagged Images: 52 107 Server Version: 1.10.3 108 Storage Driver: devicemapper 109 Pool Name: docker-202:2-25583803-pool 110 Pool Blocksize: 65.54 kB 111 Base Device Size: 10.74 GB 112 Backing Filesystem: xfs 113 Data file: /dev/loop0 114 Metadata file: /dev/loop1 115 Data Space Used: 1.68 GB 116 Data Space Total: 107.4 GB 117 Data Space Available: 7.548 GB 118 Metadata Space Used: 2.322 MB 119 Metadata Space Total: 2.147 GB 120 Metadata Space Available: 2.145 GB 121 Udev Sync Supported: true 122 Deferred Removal Enabled: false 123 Deferred Deletion Enabled: false 124 Deferred Deleted Device Count: 0 125 Data loop file: /var/lib/docker/devicemapper/devicemapper/data 126 Metadata loop file: /var/lib/docker/devicemapper/devicemapper/metadata 127 Library Version: 1.02.107-RHEL7 (2015-12-01) 128 Execution Driver: native-0.2 129 Logging Driver: json-file 130 Plugins: 131 Volume: local 132 Network: null host bridge 133 Kernel Version: 3.10.0-327.el7.x86_64 134 Operating System: Red Hat Enterprise Linux Server 7.2 (Maipo) 135 OSType: linux 136 Architecture: x86_64 137 CPUs: 1 138 Total Memory: 991.7 MiB 139 Name: ip-172-30-0-91.ec2.internal 140 ID: I54V:OLXT:HVMM:TPKO:JPHQ:CQCD:JNLC:O3BZ:4ZVJ:43XJ:PFHZ:6N2S 141 Docker Root Dir: /var/lib/docker 142 Debug mode (client): false 143 Debug mode (server): false 144 Username: xyz 145 Registry: https://index.docker.io/v1/ 146 Insecure registries: 147 myinsecurehost:5000 148 127.0.0.0/8 149 150 You can also specify the output format: 151 152 $ docker info --format '{{json .}}' 153 {"ID":"I54V:OLXT:HVMM:TPKO:JPHQ:CQCD:JNLC:O3BZ:4ZVJ:43XJ:PFHZ:6N2S","Containers":14, ...} 154 155 # HISTORY 156 April 2014, Originally compiled by William Henry (whenry at redhat dot com) 157 based on docker.com source material and internal work. 158 June 2014, updated by Sven Dowideit <SvenDowideit@home.org.au>