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package client
import (
"fmt"
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"strings"
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Cli "github.com/docker/docker/cli"
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"github.com/docker/docker/pkg/ioutils"
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flag "github.com/docker/docker/pkg/mflag"
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"github.com/docker/docker/utils"
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"github.com/docker/go-units"
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)
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// CmdInfo displays system-wide information.
//
// Usage: docker info
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func ( cli * DockerCli ) CmdInfo ( args ... string ) error {
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cmd := Cli . Subcmd ( "info" , nil , Cli . DockerCommands [ "info" ] . Description , true )
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cmd . Require ( flag . Exact , 0 )
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cmd . ParseFlags ( args , true )
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info , err := cli . client . Info ( )
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if err != nil {
return err
}
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fmt . Fprintf ( cli . out , "Containers: %d\n" , info . Containers )
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fmt . Fprintf ( cli . out , " Running: %d\n" , info . ContainersRunning )
fmt . Fprintf ( cli . out , " Paused: %d\n" , info . ContainersPaused )
fmt . Fprintf ( cli . out , " Stopped: %d\n" , info . ContainersStopped )
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fmt . Fprintf ( cli . out , "Images: %d\n" , info . Images )
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ioutils . FprintfIfNotEmpty ( cli . out , "Server Version: %s\n" , info . ServerVersion )
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ioutils . FprintfIfNotEmpty ( cli . out , "Storage Driver: %s\n" , info . Driver )
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if info . DriverStatus != nil {
for _ , pair := range info . DriverStatus {
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fmt . Fprintf ( cli . out , " %s: %s\n" , pair [ 0 ] , pair [ 1 ] )
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// print a warning if devicemapper is using a loopback file
if pair [ 0 ] == "Data loop file" {
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fmt . Fprintln ( cli . err , " WARNING: Usage of loopback devices is strongly discouraged for production use. Either use `--storage-opt dm.thinpooldev` or use `--storage-opt dm.no_warn_on_loop_devices=true` to suppress this warning." )
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}
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}
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}
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if info . SystemStatus != nil {
for _ , pair := range info . SystemStatus {
fmt . Fprintf ( cli . out , "%s: %s\n" , pair [ 0 ] , pair [ 1 ] )
}
}
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ioutils . FprintfIfNotEmpty ( cli . out , "Execution Driver: %s\n" , info . ExecutionDriver )
ioutils . FprintfIfNotEmpty ( cli . out , "Logging Driver: %s\n" , info . LoggingDriver )
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ioutils . FprintfIfNotEmpty ( cli . out , "Cgroup Driver: %s\n" , info . CgroupDriver )
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fmt . Fprintf ( cli . out , "Plugins: \n" )
fmt . Fprintf ( cli . out , " Volume:" )
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fmt . Fprintf ( cli . out , " %s" , strings . Join ( info . Plugins . Volume , " " ) )
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fmt . Fprintf ( cli . out , "\n" )
fmt . Fprintf ( cli . out , " Network:" )
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fmt . Fprintf ( cli . out , " %s" , strings . Join ( info . Plugins . Network , " " ) )
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fmt . Fprintf ( cli . out , "\n" )
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if len ( info . Plugins . Authorization ) != 0 {
fmt . Fprintf ( cli . out , " Authorization:" )
fmt . Fprintf ( cli . out , " %s" , strings . Join ( info . Plugins . Authorization , " " ) )
fmt . Fprintf ( cli . out , "\n" )
}
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ioutils . FprintfIfNotEmpty ( cli . out , "Kernel Version: %s\n" , info . KernelVersion )
ioutils . FprintfIfNotEmpty ( cli . out , "Operating System: %s\n" , info . OperatingSystem )
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ioutils . FprintfIfNotEmpty ( cli . out , "OSType: %s\n" , info . OSType )
ioutils . FprintfIfNotEmpty ( cli . out , "Architecture: %s\n" , info . Architecture )
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fmt . Fprintf ( cli . out , "CPUs: %d\n" , info . NCPU )
fmt . Fprintf ( cli . out , "Total Memory: %s\n" , units . BytesSize ( float64 ( info . MemTotal ) ) )
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ioutils . FprintfIfNotEmpty ( cli . out , "Name: %s\n" , info . Name )
ioutils . FprintfIfNotEmpty ( cli . out , "ID: %s\n" , info . ID )
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fmt . Fprintf ( cli . out , "Docker Root Dir: %s\n" , info . DockerRootDir )
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fmt . Fprintf ( cli . out , "Debug mode (client): %v\n" , utils . IsDebugEnabled ( ) )
fmt . Fprintf ( cli . out , "Debug mode (server): %v\n" , info . Debug )
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if info . Debug {
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fmt . Fprintf ( cli . out , " File Descriptors: %d\n" , info . NFd )
fmt . Fprintf ( cli . out , " Goroutines: %d\n" , info . NGoroutines )
fmt . Fprintf ( cli . out , " System Time: %s\n" , info . SystemTime )
fmt . Fprintf ( cli . out , " EventsListeners: %d\n" , info . NEventsListener )
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}
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ioutils . FprintfIfNotEmpty ( cli . out , "Http Proxy: %s\n" , info . HTTPProxy )
ioutils . FprintfIfNotEmpty ( cli . out , "Https Proxy: %s\n" , info . HTTPSProxy )
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ioutils . FprintfIfNotEmpty ( cli . out , "No Proxy: %s\n" , info . NoProxy )
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if info . IndexServerAddress != "" {
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u := cli . configFile . AuthConfigs [ info . IndexServerAddress ] . Username
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if len ( u ) > 0 {
fmt . Fprintf ( cli . out , "Username: %v\n" , u )
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fmt . Fprintf ( cli . out , "Registry: %v\n" , info . IndexServerAddress )
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}
}
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// Only output these warnings if the server does not support these features
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if info . OSType != "windows" {
if ! info . MemoryLimit {
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fmt . Fprintln ( cli . err , "WARNING: No memory limit support" )
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}
if ! info . SwapLimit {
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fmt . Fprintln ( cli . err , "WARNING: No swap limit support" )
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}
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if ! info . KernelMemory {
fmt . Fprintln ( cli . err , "WARNING: No kernel memory limit support" )
}
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if ! info . OomKillDisable {
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fmt . Fprintln ( cli . err , "WARNING: No oom kill disable support" )
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}
if ! info . CPUCfsQuota {
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fmt . Fprintln ( cli . err , "WARNING: No cpu cfs quota support" )
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}
if ! info . CPUCfsPeriod {
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fmt . Fprintln ( cli . err , "WARNING: No cpu cfs period support" )
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}
if ! info . CPUShares {
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fmt . Fprintln ( cli . err , "WARNING: No cpu shares support" )
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}
if ! info . CPUSet {
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fmt . Fprintln ( cli . err , "WARNING: No cpuset support" )
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}
if ! info . IPv4Forwarding {
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fmt . Fprintln ( cli . err , "WARNING: IPv4 forwarding is disabled" )
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}
if ! info . BridgeNfIptables {
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fmt . Fprintln ( cli . err , "WARNING: bridge-nf-call-iptables is disabled" )
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}
if ! info . BridgeNfIP6tables {
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fmt . Fprintln ( cli . err , "WARNING: bridge-nf-call-ip6tables is disabled" )
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}
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}
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if info . Labels != nil {
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fmt . Fprintln ( cli . out , "Labels:" )
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for _ , attribute := range info . Labels {
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fmt . Fprintf ( cli . out , " %s\n" , attribute )
}
}
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ioutils . FprintfIfTrue ( cli . out , "Experimental: %v\n" , info . ExperimentalBuild )
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if info . ClusterStore != "" {
fmt . Fprintf ( cli . out , "Cluster store: %s\n" , info . ClusterStore )
}
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if info . ClusterAdvertise != "" {
fmt . Fprintf ( cli . out , "Cluster advertise: %s\n" , info . ClusterAdvertise )
}
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return nil
}