1DOCKER(1) JUNE 2014 DOCKER(1)
2
6 docker-info - Display system-wide information
7
11 docker info [--help] [-f|--format[=FORMAT]]
12
16 This command displays system wide information regarding the Docker
17 installation. Information displayed includes the kernel version,
18 number of containers and images. The number of images shown is the
19 number of unique images. The same image tagged under different names is
20 counted only once.
21 If a format is specified, the given template will be executed instead
24 of the default format. Go's text/template package describes all the
25 details of the format.
26 Depending on the storage driver in use, additional information can be
29 shown, such as pool name, data file, metadata file, data space used,
30 total data space, metadata space used, and total metadata space.
31 The data file is where the images are stored and the metadata file is
34 where the meta data regarding those images are stored. When run for the
35 first time Docker allocates a certain amount of data space and meta
36 data space from the space available on the volume where /var/lib/docker
37 is mounted.
38
42 --help
43 Print usage statement
44 -f, --format=""
47 Format the output using the given Go template
48
53 Here is a sample output for a daemon running on Ubuntu, using the
54 overlay2 storage driver:
55 $ docker -D info
58 Containers: 14
59 Running: 3
60 Paused: 1
61 Stopped: 10
62 Images: 52
63 Server Version: 1.13.0
64 Storage Driver: overlay2
65 Backing Filesystem: extfs
66 Supports d_type: true
67 Native Overlay Diff: false
68 Logging Driver: json-file
69 Cgroup Driver: cgroupfs
70 Plugins:
71 Volume: local
72 Network: bridge host macvlan null overlay
73 Swarm: active
74 NodeID: rdjq45w1op418waxlairloqbm
75 Is Manager: true
76 ClusterID: te8kdyw33n36fqiz74bfjeixd
77 Managers: 1
78 Nodes: 2
79 Orchestration:
80 Task History Retention Limit: 5
81 Raft:
82 Snapshot Interval: 10000
83 Number of Old Snapshots to Retain: 0
84 Heartbeat Tick: 1
85 Election Tick: 3
86 Dispatcher:
87 Heartbeat Period: 5 seconds
88 CA Configuration:
89 Expiry Duration: 3 months
90 Node Address: 172.16.66.128 172.16.66.129
91 Manager Addresses:
92 172.16.66.128:2477
93 Runtimes: runc
94 Default Runtime: runc
95 Init Binary: docker-init
96 containerd version: 8517738ba4b82aff5662c97ca4627e7e4d03b531
97 runc version: ac031b5bf1cc92239461125f4c1ffb760522bbf2
98 init version: N/A (expected: v0.13.0)
99 Security Options:
100 apparmor
101 seccomp
102 Profile: default
103 Kernel Version: 4.4.0-31-generic
104 Operating System: Ubuntu 16.04.1 LTS
105 OSType: linux
106 Architecture: x86_64
107 Number of Hooks: 2
108 CPUs: 2
109 Total Memory: 1.937 GiB
110 Name: ubuntu
111 ID: H52R:7ZR6:EIIA:76JG:ORIY:BVKF:GSFU:HNPG:B5MK:APSC:SZ3Q:N326
112 Docker Root Dir: /var/lib/docker
113 Debug Mode (client): true
114 Debug Mode (server): true
115 File Descriptors: 30
116 Goroutines: 123
117 System Time: 2016-11-12T17:24:37.955404361-08:00
118 EventsListeners: 0
119 Http Proxy: http://test:test@proxy.example.com:8080
120 Https Proxy: https://test:test@proxy.example.com:8080
121 No Proxy: localhost,127.0.0.1,docker-registry.somecorporation.com
122 Registry: https://index.docker.io/v1/
123 WARNING: No swap limit support
124 Labels:
125 storage=ssd
126 staging=true
127 Experimental: false
128 Insecure Registries:
129 127.0.0.0/8
130 Registry Mirrors:
131 http://192.168.1.2/
132 http://registry-mirror.example.com:5000/
133 Live Restore Enabled: false
134 The global -D option tells all docker commands to output debug
138 information.
139 The example below shows the output for a daemon running on Red Hat
142 Enterprise Linux, using the devicemapper storage driver. As can be seen
143 in the output, additional information about the devicemapper storage
144 driver is shown:
145 $ docker info
148 Containers: 14
149 Running: 3
150 Paused: 1
151 Stopped: 10
152 Untagged Images: 52
153 Server Version: 1.10.3
154 Storage Driver: devicemapper
155 Pool Name: docker-202:2-25583803-pool
156 Pool Blocksize: 65.54 kB
157 Base Device Size: 10.74 GB
158 Backing Filesystem: xfs
159 Data file: /dev/loop0
160 Metadata file: /dev/loop1
161 Data Space Used: 1.68 GB
162 Data Space Total: 107.4 GB
163 Data Space Available: 7.548 GB
164 Metadata Space Used: 2.322 MB
165 Metadata Space Total: 2.147 GB
166 Metadata Space Available: 2.145 GB
167 Udev Sync Supported: true
168 Deferred Removal Enabled: false
169 Deferred Deletion Enabled: false
170 Deferred Deleted Device Count: 0
171 Data loop file: /var/lib/docker/devicemapper/devicemapper/data
172 Metadata loop file: /var/lib/docker/devicemapper/devicemapper/metadata
173 Library Version: 1.02.107-RHEL7 (2015-12-01)
174 Execution Driver: native-0.2
175 Logging Driver: json-file
176 Plugins:
177 Volume: local
178 Network: null host bridge
179 Kernel Version: 3.10.0-327.el7.x86_64
180 Operating System: Red Hat Enterprise Linux Server 7.2 (Maipo)
181 OSType: linux
182 Architecture: x86_64
183 CPUs: 1
184 Total Memory: 991.7 MiB
185 Name: ip-172-30-0-91.ec2.internal
186 ID: I54V:OLXT:HVMM:TPKO:JPHQ:CQCD:JNLC:O3BZ:4ZVJ:43XJ:PFHZ:6N2S
187 Docker Root Dir: /var/lib/docker
188 Debug mode (client): false
189 Debug mode (server): false
190 Username: gordontheturtle
191 Registry: https://index.docker.io/v1/
192 Insecure registries:
193 myinsecurehost:5000
194 127.0.0.0/8
195 Registries: docker.io (secure), 127.0.0.0/8 (insecure)
196 You can also specify the output format:
200 $ docker info --format '{{json .}}'
203 {"ID":"I54V:OLXT:HVMM:TPKO:JPHQ:CQCD:JNLC:O3BZ:4ZVJ:43XJ:PFHZ:6N2S","Containers":14, ...}
204
209 April 2014, Originally compiled by William Henry (whenry at redhat dot
210 com) based on docker.com source material and internal work. June 2014,
211 updated by Sven Dowideit ⟨SvenDowideit@home.org.au⟩
212Docker Community Docker User Manuals DOCKER(1)