github.com/fcwu/docker@v1.4.2-0.20150115145920-2a69ca89f0df/daemon/config.go (about)

     1  package daemon
     2  
     3  import (
     4  	"net"
     5  
     6  	"github.com/docker/docker/daemon/networkdriver"
     7  	"github.com/docker/docker/opts"
     8  	flag "github.com/docker/docker/pkg/mflag"
     9  )
    10  
    11  const (
    12  	defaultNetworkMtu    = 1500
    13  	disableNetworkBridge = "none"
    14  )
    15  
    16  // Config define the configuration of a docker daemon
    17  // These are the configuration settings that you pass
    18  // to the docker daemon when you launch it with say: `docker -d -e lxc`
    19  // FIXME: separate runtime configuration from http api configuration
    20  type Config struct {
    21  	Pidfile                     string
    22  	Root                        string
    23  	AutoRestart                 bool
    24  	Dns                         []string
    25  	DnsSearch                   []string
    26  	Mirrors                     []string
    27  	EnableIptables              bool
    28  	EnableIpForward             bool
    29  	EnableIpMasq                bool
    30  	DefaultIp                   net.IP
    31  	BridgeIface                 string
    32  	BridgeIP                    string
    33  	FixedCIDR                   string
    34  	InsecureRegistries          []string
    35  	InterContainerCommunication bool
    36  	GraphDriver                 string
    37  	GraphOptions                []string
    38  	ExecDriver                  string
    39  	Mtu                         int
    40  	DisableNetwork              bool
    41  	EnableSelinuxSupport        bool
    42  	Context                     map[string][]string
    43  	TrustKeyPath                string
    44  	Labels                      []string
    45  }
    46  
    47  // InstallFlags adds command-line options to the top-level flag parser for
    48  // the current process.
    49  // Subsequent calls to `flag.Parse` will populate config with values parsed
    50  // from the command-line.
    51  func (config *Config) InstallFlags() {
    52  	flag.StringVar(&config.Pidfile, []string{"p", "-pidfile"}, "/var/run/docker.pid", "Path to use for daemon PID file")
    53  	flag.StringVar(&config.Root, []string{"g", "-graph"}, "/var/lib/docker", "Path to use as the root of the Docker runtime")
    54  	flag.BoolVar(&config.AutoRestart, []string{"#r", "#-restart"}, true, "--restart on the daemon has been deprecated in favor of --restart policies on docker run")
    55  	flag.BoolVar(&config.EnableIptables, []string{"#iptables", "-iptables"}, true, "Enable Docker's addition of iptables rules")
    56  	flag.BoolVar(&config.EnableIpForward, []string{"#ip-forward", "-ip-forward"}, true, "Enable net.ipv4.ip_forward")
    57  	flag.BoolVar(&config.EnableIpMasq, []string{"-ip-masq"}, true, "Enable IP masquerading for bridge's IP range")
    58  	flag.StringVar(&config.BridgeIP, []string{"#bip", "-bip"}, "", "Use this CIDR notation address for the network bridge's IP, not compatible with -b")
    59  	flag.StringVar(&config.BridgeIface, []string{"b", "-bridge"}, "", "Attach containers to a pre-existing network bridge\nuse 'none' to disable container networking")
    60  	flag.StringVar(&config.FixedCIDR, []string{"-fixed-cidr"}, "", "IPv4 subnet for fixed IPs (ex: 10.20.0.0/16)\nthis subnet must be nested in the bridge subnet (which is defined by -b or --bip)")
    61  	opts.ListVar(&config.InsecureRegistries, []string{"-insecure-registry"}, "Enable insecure communication with specified registries (no certificate verification for HTTPS and enable HTTP fallback) (e.g., localhost:5000 or 10.20.0.0/16)")
    62  	flag.BoolVar(&config.InterContainerCommunication, []string{"#icc", "-icc"}, true, "Allow unrestricted inter-container and Docker daemon host communication")
    63  	flag.StringVar(&config.GraphDriver, []string{"s", "-storage-driver"}, "", "Force the Docker runtime to use a specific storage driver")
    64  	flag.StringVar(&config.ExecDriver, []string{"e", "-exec-driver"}, "native", "Force the Docker runtime to use a specific exec driver")
    65  	flag.BoolVar(&config.EnableSelinuxSupport, []string{"-selinux-enabled"}, false, "Enable selinux support. SELinux does not presently support the BTRFS storage driver")
    66  	flag.IntVar(&config.Mtu, []string{"#mtu", "-mtu"}, 0, "Set the containers network MTU\nif no value is provided: default to the default route MTU or 1500 if no default route is available")
    67  	opts.IPVar(&config.DefaultIp, []string{"#ip", "-ip"}, "0.0.0.0", "Default IP address to use when binding container ports")
    68  	opts.ListVar(&config.GraphOptions, []string{"-storage-opt"}, "Set storage driver options")
    69  	// FIXME: why the inconsistency between "hosts" and "sockets"?
    70  	opts.IPListVar(&config.Dns, []string{"#dns", "-dns"}, "Force Docker to use specific DNS servers")
    71  	opts.DnsSearchListVar(&config.DnsSearch, []string{"-dns-search"}, "Force Docker to use specific DNS search domains")
    72  	opts.MirrorListVar(&config.Mirrors, []string{"-registry-mirror"}, "Specify a preferred Docker registry mirror")
    73  	opts.LabelListVar(&config.Labels, []string{"-label"}, "Set key=value labels to the daemon (displayed in `docker info`)")
    74  
    75  	// Localhost is by default considered as an insecure registry
    76  	// This is a stop-gap for people who are running a private registry on localhost (especially on Boot2docker).
    77  	//
    78  	// TODO: should we deprecate this once it is easier for people to set up a TLS registry or change
    79  	// daemon flags on boot2docker?
    80  	// If so, do not forget to check the TODO in TestIsSecure
    81  	config.InsecureRegistries = append(config.InsecureRegistries, "127.0.0.0/8")
    82  }
    83  
    84  func getDefaultNetworkMtu() int {
    85  	if iface, err := networkdriver.GetDefaultRouteIface(); err == nil {
    86  		return iface.MTU
    87  	}
    88  	return defaultNetworkMtu
    89  }