github.com/uppal0016/docker_new@v0.0.0-20240123060250-1c98be13ac2c/daemon/config_unix.go (about)

     1  // +build linux freebsd
     2  
     3  package daemon
     4  
     5  import (
     6  	"net"
     7  
     8  	"github.com/docker/docker/opts"
     9  	flag "github.com/docker/docker/pkg/mflag"
    10  	runconfigopts "github.com/docker/docker/runconfig/opts"
    11  	"github.com/docker/go-units"
    12  )
    13  
    14  var (
    15  	defaultPidFile  = "/var/run/docker.pid"
    16  	defaultGraph    = "/var/lib/docker"
    17  	defaultExecRoot = "/var/run/docker"
    18  )
    19  
    20  // Config defines the configuration of a docker daemon.
    21  // It includes json tags to deserialize configuration from a file
    22  // using the same names that the flags in the command line uses.
    23  type Config struct {
    24  	CommonConfig
    25  
    26  	// Fields below here are platform specific.
    27  
    28  	CgroupParent         string                   `json:"cgroup-parent,omitempty"`
    29  	ContainerdAddr       string                   `json:"containerd,omitempty"`
    30  	CorsHeaders          string                   `json:"api-cors-headers,omitempty"`
    31  	EnableCors           bool                     `json:"api-enable-cors,omitempty"`
    32  	EnableSelinuxSupport bool                     `json:"selinux-enabled,omitempty"`
    33  	ExecRoot             string                   `json:"exec-root,omitempty"`
    34  	RemappedRoot         string                   `json:"userns-remap,omitempty"`
    35  	Ulimits              map[string]*units.Ulimit `json:"default-ulimits,omitempty"`
    36  }
    37  
    38  // bridgeConfig stores all the bridge driver specific
    39  // configuration.
    40  type bridgeConfig struct {
    41  	commonBridgeConfig
    42  
    43  	// Fields below here are platform specific.
    44  	EnableIPv6                  bool   `json:"ipv6,omitempty"`
    45  	EnableIPTables              bool   `json:"iptables,omitempty"`
    46  	EnableIPForward             bool   `json:"ip-forward,omitempty"`
    47  	EnableIPMasq                bool   `json:"ip-mask,omitempty"`
    48  	EnableUserlandProxy         bool   `json:"userland-proxy,omitempty"`
    49  	DefaultIP                   net.IP `json:"ip,omitempty"`
    50  	IP                          string `json:"bip,omitempty"`
    51  	FixedCIDRv6                 string `json:"fixed-cidr-v6,omitempty"`
    52  	DefaultGatewayIPv4          net.IP `json:"default-gateway,omitempty"`
    53  	DefaultGatewayIPv6          net.IP `json:"default-gateway-v6,omitempty"`
    54  	InterContainerCommunication bool   `json:"icc,omitempty"`
    55  }
    56  
    57  // InstallFlags adds command-line options to the top-level flag parser for
    58  // the current process.
    59  // Subsequent calls to `flag.Parse` will populate config with values parsed
    60  // from the command-line.
    61  func (config *Config) InstallFlags(cmd *flag.FlagSet, usageFn func(string) string) {
    62  	// First handle install flags which are consistent cross-platform
    63  	config.InstallCommonFlags(cmd, usageFn)
    64  
    65  	// Then platform-specific install flags
    66  	cmd.BoolVar(&config.EnableSelinuxSupport, []string{"-selinux-enabled"}, false, usageFn("Enable selinux support"))
    67  	cmd.StringVar(&config.SocketGroup, []string{"G", "-group"}, "docker", usageFn("Group for the unix socket"))
    68  	config.Ulimits = make(map[string]*units.Ulimit)
    69  	cmd.Var(runconfigopts.NewUlimitOpt(&config.Ulimits), []string{"-default-ulimit"}, usageFn("Set default ulimits for containers"))
    70  	cmd.BoolVar(&config.bridgeConfig.EnableIPTables, []string{"#iptables", "-iptables"}, true, usageFn("Enable addition of iptables rules"))
    71  	cmd.BoolVar(&config.bridgeConfig.EnableIPForward, []string{"#ip-forward", "-ip-forward"}, true, usageFn("Enable net.ipv4.ip_forward"))
    72  	cmd.BoolVar(&config.bridgeConfig.EnableIPMasq, []string{"-ip-masq"}, true, usageFn("Enable IP masquerading"))
    73  	cmd.BoolVar(&config.bridgeConfig.EnableIPv6, []string{"-ipv6"}, false, usageFn("Enable IPv6 networking"))
    74  	cmd.StringVar(&config.ExecRoot, []string{"-exec-root"}, defaultExecRoot, usageFn("Root directory for execution state files"))
    75  	cmd.StringVar(&config.bridgeConfig.IP, []string{"#bip", "-bip"}, "", usageFn("Specify network bridge IP"))
    76  	cmd.StringVar(&config.bridgeConfig.Iface, []string{"b", "-bridge"}, "", usageFn("Attach containers to a network bridge"))
    77  	cmd.StringVar(&config.bridgeConfig.FixedCIDR, []string{"-fixed-cidr"}, "", usageFn("IPv4 subnet for fixed IPs"))
    78  	cmd.StringVar(&config.bridgeConfig.FixedCIDRv6, []string{"-fixed-cidr-v6"}, "", usageFn("IPv6 subnet for fixed IPs"))
    79  	cmd.Var(opts.NewIPOpt(&config.bridgeConfig.DefaultGatewayIPv4, ""), []string{"-default-gateway"}, usageFn("Container default gateway IPv4 address"))
    80  	cmd.Var(opts.NewIPOpt(&config.bridgeConfig.DefaultGatewayIPv6, ""), []string{"-default-gateway-v6"}, usageFn("Container default gateway IPv6 address"))
    81  	cmd.BoolVar(&config.bridgeConfig.InterContainerCommunication, []string{"#icc", "-icc"}, true, usageFn("Enable inter-container communication"))
    82  	cmd.Var(opts.NewIPOpt(&config.bridgeConfig.DefaultIP, "0.0.0.0"), []string{"#ip", "-ip"}, usageFn("Default IP when binding container ports"))
    83  	cmd.BoolVar(&config.bridgeConfig.EnableUserlandProxy, []string{"-userland-proxy"}, true, usageFn("Use userland proxy for loopback traffic"))
    84  	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"))
    85  	cmd.StringVar(&config.CorsHeaders, []string{"-api-cors-header"}, "", usageFn("Set CORS headers in the remote API"))
    86  	cmd.StringVar(&config.CgroupParent, []string{"-cgroup-parent"}, "", usageFn("Set parent cgroup for all containers"))
    87  	cmd.StringVar(&config.RemappedRoot, []string{"-userns-remap"}, "", usageFn("User/Group setting for user namespaces"))
    88  	cmd.StringVar(&config.ContainerdAddr, []string{"-containerd"}, "", usageFn("Path to containerd socket"))
    89  
    90  	config.attachExperimentalFlags(cmd, usageFn)
    91  }