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76 lines
4.2 KiB
Go
76 lines
4.2 KiB
Go
package daemon
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import (
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"net"
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"github.com/docker/docker/daemon/networkdriver"
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"github.com/docker/docker/opts"
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flag "github.com/docker/docker/pkg/mflag"
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)
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const (
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defaultNetworkMtu = 1500
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disableNetworkBridge = "none"
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)
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// Config define the configuration of a docker daemon
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// These are the configuration settings that you pass
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// to the docker daemon when you launch it with say: `docker -d -e lxc`
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// FIXME: separate runtime configuration from http api configuration
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type Config struct {
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Pidfile string
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Root string
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AutoRestart bool
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Dns []string
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DnsSearch []string
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Mirrors []string
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EnableIptables bool
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EnableIpForward bool
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EnableIpMasq bool
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DefaultIp net.IP
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BridgeIface string
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BridgeIP string
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FixedCIDR string
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InterContainerCommunication bool
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GraphDriver string
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GraphOptions []string
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ExecDriver string
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Mtu int
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DisableNetwork bool
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EnableSelinuxSupport bool
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Context map[string][]string
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}
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// InstallFlags adds command-line options to the top-level flag parser for
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// the current process.
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// Subsequent calls to `flag.Parse` will populate config with values parsed
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// from the command-line.
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func (config *Config) InstallFlags() {
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flag.StringVar(&config.Pidfile, []string{"p", "-pidfile"}, "/var/run/docker.pid", "Path to use for daemon PID file")
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flag.StringVar(&config.Root, []string{"g", "-graph"}, "/var/lib/docker", "Path to use as the root of the Docker runtime")
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flag.BoolVar(&config.AutoRestart, []string{"#r", "#-restart"}, true, "--restart on the daemon has been deprecated in favor of --restart policies on docker run")
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flag.BoolVar(&config.EnableIptables, []string{"#iptables", "-iptables"}, true, "Enable Docker's addition of iptables rules")
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flag.BoolVar(&config.EnableIpForward, []string{"#ip-forward", "-ip-forward"}, true, "Enable net.ipv4.ip_forward")
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flag.BoolVar(&config.EnableIpMasq, []string{"-ip-masq"}, true, "Enable IP masquerading for bridge's IP range")
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flag.StringVar(&config.BridgeIP, []string{"#bip", "-bip"}, "", "Use this CIDR notation address for the network bridge's IP, not compatible with -b")
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flag.StringVar(&config.BridgeIface, []string{"b", "-bridge"}, "", "Attach containers to a pre-existing network bridge\nuse 'none' to disable container networking")
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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)")
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flag.BoolVar(&config.InterContainerCommunication, []string{"#icc", "-icc"}, true, "Enable inter-container communication")
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flag.StringVar(&config.GraphDriver, []string{"s", "-storage-driver"}, "", "Force the Docker runtime to use a specific storage driver")
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flag.StringVar(&config.ExecDriver, []string{"e", "-exec-driver"}, "native", "Force the Docker runtime to use a specific exec driver")
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flag.BoolVar(&config.EnableSelinuxSupport, []string{"-selinux-enabled"}, false, "Enable selinux support. SELinux does not presently support the BTRFS storage driver")
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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")
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opts.IPVar(&config.DefaultIp, []string{"#ip", "-ip"}, "0.0.0.0", "Default IP address to use when binding container ports")
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opts.ListVar(&config.GraphOptions, []string{"-storage-opt"}, "Set storage driver options")
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// FIXME: why the inconsistency between "hosts" and "sockets"?
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opts.IPListVar(&config.Dns, []string{"#dns", "-dns"}, "Force Docker to use specific DNS servers")
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opts.DnsSearchListVar(&config.DnsSearch, []string{"-dns-search"}, "Force Docker to use specific DNS search domains")
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opts.MirrorListVar(&config.Mirrors, []string{"-registry-mirror"}, "Specify a preferred Docker registry mirror")
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}
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func GetDefaultNetworkMtu() int {
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if iface, err := networkdriver.GetDefaultRouteIface(); err == nil {
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return iface.MTU
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}
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return defaultNetworkMtu
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}
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