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677a6b3506
Read configuration after flags making this the priority: 1- Apply configuration from file. 2- Apply configuration from flags. Reload configuration when a signal is received, USR2 in Linux: - Reload router if the debug configuration changes. - Reload daemon labels. - Reload cluster discovery. Signed-off-by: David Calavera <david.calavera@gmail.com>
87 lines
4.6 KiB
Go
87 lines
4.6 KiB
Go
// +build linux freebsd
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package daemon
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import (
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"net"
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"github.com/docker/docker/opts"
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flag "github.com/docker/docker/pkg/mflag"
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runconfigopts "github.com/docker/docker/runconfig/opts"
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"github.com/docker/go-units"
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)
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var (
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defaultPidFile = "/var/run/docker.pid"
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defaultGraph = "/var/lib/docker"
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defaultExec = "native"
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)
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// Config defines the configuration of a docker daemon.
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// It includes json tags to deserialize configuration from a file
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// using the same names that the flags in the command line uses.
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type Config struct {
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CommonConfig
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// Fields below here are platform specific.
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CorsHeaders string `json:"api-cors-headers,omitempty"`
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EnableCors bool `json:"api-enable-cors,omitempty"`
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EnableSelinuxSupport bool `json:"selinux-enabled,omitempty"`
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RemappedRoot string `json:"userns-remap,omitempty"`
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SocketGroup string `json:"group,omitempty"`
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CgroupParent string `json:"cgroup-parent,omitempty"`
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Ulimits map[string]*units.Ulimit `json:"default-ulimits,omitempty"`
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}
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// bridgeConfig stores all the bridge driver specific
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// configuration.
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type bridgeConfig struct {
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EnableIPv6 bool
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EnableIPTables bool
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EnableIPForward bool
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EnableIPMasq bool
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EnableUserlandProxy bool
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DefaultIP net.IP
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Iface string
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IP string
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FixedCIDR string
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FixedCIDRv6 string
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DefaultGatewayIPv4 net.IP
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DefaultGatewayIPv6 net.IP
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InterContainerCommunication bool
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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(cmd *flag.FlagSet, usageFn func(string) string) {
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// First handle install flags which are consistent cross-platform
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config.InstallCommonFlags(cmd, usageFn)
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// Then platform-specific install flags
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cmd.BoolVar(&config.EnableSelinuxSupport, []string{"-selinux-enabled"}, false, usageFn("Enable selinux support"))
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cmd.StringVar(&config.SocketGroup, []string{"G", "-group"}, "docker", usageFn("Group for the unix socket"))
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config.Ulimits = make(map[string]*units.Ulimit)
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cmd.Var(runconfigopts.NewUlimitOpt(&config.Ulimits), []string{"-default-ulimit"}, usageFn("Set default ulimits for containers"))
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cmd.BoolVar(&config.Bridge.EnableIPTables, []string{"#iptables", "-iptables"}, true, usageFn("Enable addition of iptables rules"))
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cmd.BoolVar(&config.Bridge.EnableIPForward, []string{"#ip-forward", "-ip-forward"}, true, usageFn("Enable net.ipv4.ip_forward"))
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cmd.BoolVar(&config.Bridge.EnableIPMasq, []string{"-ip-masq"}, true, usageFn("Enable IP masquerading"))
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cmd.BoolVar(&config.Bridge.EnableIPv6, []string{"-ipv6"}, false, usageFn("Enable IPv6 networking"))
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cmd.StringVar(&config.Bridge.IP, []string{"#bip", "-bip"}, "", usageFn("Specify network bridge IP"))
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cmd.StringVar(&config.Bridge.Iface, []string{"b", "-bridge"}, "", usageFn("Attach containers to a network bridge"))
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cmd.StringVar(&config.Bridge.FixedCIDR, []string{"-fixed-cidr"}, "", usageFn("IPv4 subnet for fixed IPs"))
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cmd.StringVar(&config.Bridge.FixedCIDRv6, []string{"-fixed-cidr-v6"}, "", usageFn("IPv6 subnet for fixed IPs"))
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cmd.Var(opts.NewIPOpt(&config.Bridge.DefaultGatewayIPv4, ""), []string{"-default-gateway"}, usageFn("Container default gateway IPv4 address"))
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cmd.Var(opts.NewIPOpt(&config.Bridge.DefaultGatewayIPv6, ""), []string{"-default-gateway-v6"}, usageFn("Container default gateway IPv6 address"))
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cmd.BoolVar(&config.Bridge.InterContainerCommunication, []string{"#icc", "-icc"}, true, usageFn("Enable inter-container communication"))
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cmd.Var(opts.NewIPOpt(&config.Bridge.DefaultIP, "0.0.0.0"), []string{"#ip", "-ip"}, usageFn("Default IP when binding container ports"))
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cmd.BoolVar(&config.Bridge.EnableUserlandProxy, []string{"-userland-proxy"}, true, usageFn("Use userland proxy for loopback traffic"))
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cmd.BoolVar(&config.EnableCors, []string{"#api-enable-cors", "#-api-enable-cors"}, false, usageFn("Enable CORS headers in the remote API, this is deprecated by --api-cors-header"))
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cmd.StringVar(&config.CorsHeaders, []string{"-api-cors-header"}, "", usageFn("Set CORS headers in the remote API"))
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cmd.StringVar(&config.CgroupParent, []string{"-cgroup-parent"}, "", usageFn("Set parent cgroup for all containers"))
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cmd.StringVar(&config.RemappedRoot, []string{"-userns-remap"}, "", usageFn("User/Group setting for user namespaces"))
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config.attachExperimentalFlags(cmd, usageFn)
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}
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