github.com/kim0/docker@v0.6.2-0.20161130212042-4addda3f07e7/daemon/config_unix.go (about) 1 // +build linux freebsd 2 3 package daemon 4 5 import ( 6 "fmt" 7 "net" 8 9 "github.com/docker/docker/api/types" 10 "github.com/docker/docker/opts" 11 runconfigopts "github.com/docker/docker/runconfig/opts" 12 units "github.com/docker/go-units" 13 "github.com/spf13/pflag" 14 ) 15 16 var ( 17 defaultPidFile = "/var/run/docker.pid" 18 defaultGraph = "/var/lib/docker" 19 defaultExecRoot = "/var/run/docker" 20 ) 21 22 // Config defines the configuration of a docker daemon. 23 // It includes json tags to deserialize configuration from a file 24 // using the same names that the flags in the command line uses. 25 type Config struct { 26 CommonConfig 27 28 // Fields below here are platform specific. 29 CgroupParent string `json:"cgroup-parent,omitempty"` 30 ContainerdAddr string `json:"containerd,omitempty"` 31 EnableSelinuxSupport bool `json:"selinux-enabled,omitempty"` 32 ExecRoot string `json:"exec-root,omitempty"` 33 RemappedRoot string `json:"userns-remap,omitempty"` 34 Ulimits map[string]*units.Ulimit `json:"default-ulimits,omitempty"` 35 Runtimes map[string]types.Runtime `json:"runtimes,omitempty"` 36 DefaultRuntime string `json:"default-runtime,omitempty"` 37 CPURealtimePeriod int64 `json:"cpu-rt-period,omitempty"` 38 CPURealtimeRuntime int64 `json:"cpu-rt-runtime,omitempty"` 39 OOMScoreAdjust int `json:"oom-score-adjust,omitempty"` 40 Init bool `json:"init,omitempty"` 41 InitPath string `json:"init-path,omitempty"` 42 } 43 44 // bridgeConfig stores all the bridge driver specific 45 // configuration. 46 type bridgeConfig struct { 47 commonBridgeConfig 48 49 // Fields below here are platform specific. 50 EnableIPv6 bool `json:"ipv6,omitempty"` 51 EnableIPTables bool `json:"iptables,omitempty"` 52 EnableIPForward bool `json:"ip-forward,omitempty"` 53 EnableIPMasq bool `json:"ip-masq,omitempty"` 54 EnableUserlandProxy bool `json:"userland-proxy,omitempty"` 55 UserlandProxyPath string `json:"userland-proxy-path,omitempty"` 56 DefaultIP net.IP `json:"ip,omitempty"` 57 IP string `json:"bip,omitempty"` 58 FixedCIDRv6 string `json:"fixed-cidr-v6,omitempty"` 59 DefaultGatewayIPv4 net.IP `json:"default-gateway,omitempty"` 60 DefaultGatewayIPv6 net.IP `json:"default-gateway-v6,omitempty"` 61 InterContainerCommunication bool `json:"icc,omitempty"` 62 } 63 64 // InstallFlags adds flags to the pflag.FlagSet to configure the daemon 65 func (config *Config) InstallFlags(flags *pflag.FlagSet) { 66 // First handle install flags which are consistent cross-platform 67 config.InstallCommonFlags(flags) 68 69 config.Ulimits = make(map[string]*units.Ulimit) 70 config.Runtimes = make(map[string]types.Runtime) 71 72 // Then platform-specific install flags 73 flags.BoolVar(&config.EnableSelinuxSupport, "selinux-enabled", false, "Enable selinux support") 74 flags.StringVarP(&config.SocketGroup, "group", "G", "docker", "Group for the unix socket") 75 flags.Var(runconfigopts.NewUlimitOpt(&config.Ulimits), "default-ulimit", "Default ulimits for containers") 76 flags.BoolVar(&config.bridgeConfig.EnableIPTables, "iptables", true, "Enable addition of iptables rules") 77 flags.BoolVar(&config.bridgeConfig.EnableIPForward, "ip-forward", true, "Enable net.ipv4.ip_forward") 78 flags.BoolVar(&config.bridgeConfig.EnableIPMasq, "ip-masq", true, "Enable IP masquerading") 79 flags.BoolVar(&config.bridgeConfig.EnableIPv6, "ipv6", false, "Enable IPv6 networking") 80 flags.StringVar(&config.ExecRoot, "exec-root", defaultExecRoot, "Root directory for execution state files") 81 flags.StringVar(&config.bridgeConfig.IP, "bip", "", "Specify network bridge IP") 82 flags.StringVarP(&config.bridgeConfig.Iface, "bridge", "b", "", "Attach containers to a network bridge") 83 flags.StringVar(&config.bridgeConfig.FixedCIDR, "fixed-cidr", "", "IPv4 subnet for fixed IPs") 84 flags.StringVar(&config.bridgeConfig.FixedCIDRv6, "fixed-cidr-v6", "", "IPv6 subnet for fixed IPs") 85 flags.Var(opts.NewIPOpt(&config.bridgeConfig.DefaultGatewayIPv4, ""), "default-gateway", "Container default gateway IPv4 address") 86 flags.Var(opts.NewIPOpt(&config.bridgeConfig.DefaultGatewayIPv6, ""), "default-gateway-v6", "Container default gateway IPv6 address") 87 flags.BoolVar(&config.bridgeConfig.InterContainerCommunication, "icc", true, "Enable inter-container communication") 88 flags.Var(opts.NewIPOpt(&config.bridgeConfig.DefaultIP, "0.0.0.0"), "ip", "Default IP when binding container ports") 89 flags.BoolVar(&config.bridgeConfig.EnableUserlandProxy, "userland-proxy", true, "Use userland proxy for loopback traffic") 90 flags.StringVar(&config.bridgeConfig.UserlandProxyPath, "userland-proxy-path", "", "Path to the userland proxy binary") 91 flags.BoolVar(&config.EnableCors, "api-enable-cors", false, "Enable CORS headers in the remote API, this is deprecated by --api-cors-header") 92 flags.MarkDeprecated("api-enable-cors", "Please use --api-cors-header") 93 flags.StringVar(&config.CgroupParent, "cgroup-parent", "", "Set parent cgroup for all containers") 94 flags.StringVar(&config.RemappedRoot, "userns-remap", "", "User/Group setting for user namespaces") 95 flags.StringVar(&config.ContainerdAddr, "containerd", "", "Path to containerd socket") 96 flags.BoolVar(&config.LiveRestoreEnabled, "live-restore", false, "Enable live restore of docker when containers are still running") 97 flags.Var(runconfigopts.NewNamedRuntimeOpt("runtimes", &config.Runtimes, stockRuntimeName), "add-runtime", "Register an additional OCI compatible runtime") 98 flags.StringVar(&config.DefaultRuntime, "default-runtime", stockRuntimeName, "Default OCI runtime for containers") 99 flags.IntVar(&config.OOMScoreAdjust, "oom-score-adjust", -500, "Set the oom_score_adj for the daemon") 100 flags.BoolVar(&config.Init, "init", false, "Run an init in the container to forward signals and reap processes") 101 flags.StringVar(&config.InitPath, "init-path", "", "Path to the docker-init binary") 102 flags.Int64Var(&config.CPURealtimePeriod, "cpu-rt-period", 0, "Limit the CPU real-time period in microseconds") 103 flags.Int64Var(&config.CPURealtimeRuntime, "cpu-rt-runtime", 0, "Limit the CPU real-time runtime in microseconds") 104 105 config.attachExperimentalFlags(flags) 106 } 107 108 // GetRuntime returns the runtime path and arguments for a given 109 // runtime name 110 func (config *Config) GetRuntime(name string) *types.Runtime { 111 config.reloadLock.Lock() 112 defer config.reloadLock.Unlock() 113 if rt, ok := config.Runtimes[name]; ok { 114 return &rt 115 } 116 return nil 117 } 118 119 // GetDefaultRuntimeName returns the current default runtime 120 func (config *Config) GetDefaultRuntimeName() string { 121 config.reloadLock.Lock() 122 rt := config.DefaultRuntime 123 config.reloadLock.Unlock() 124 125 return rt 126 } 127 128 // GetAllRuntimes returns a copy of the runtimes map 129 func (config *Config) GetAllRuntimes() map[string]types.Runtime { 130 config.reloadLock.Lock() 131 rts := config.Runtimes 132 config.reloadLock.Unlock() 133 return rts 134 } 135 136 // GetExecRoot returns the user configured Exec-root 137 func (config *Config) GetExecRoot() string { 138 return config.ExecRoot 139 } 140 141 func (config *Config) isSwarmCompatible() error { 142 if config.ClusterStore != "" || config.ClusterAdvertise != "" { 143 return fmt.Errorf("--cluster-store and --cluster-advertise daemon configurations are incompatible with swarm mode") 144 } 145 if config.LiveRestoreEnabled { 146 return fmt.Errorf("--live-restore daemon configuration is incompatible with swarm mode") 147 } 148 return nil 149 }