// setDefaults fills in any fields not set that are required to have valid data.
func setDefaults(c *Config) {
if c.ServiceClusterIPRange == nil {
defaultNet := "10.0.0.0/24"
glog.Warningf("Network range for service cluster IPs is unspecified. Defaulting to %v.", defaultNet)
_, serviceClusterIPRange, err := net.ParseCIDR(defaultNet)
if err != nil {
glog.Fatalf("Unable to parse CIDR: %v", err)
}
if size := ipallocator.RangeSize(serviceClusterIPRange); size < 8 {
glog.Fatalf("The service cluster IP range must be at least %d IP addresses", 8)
}
c.ServiceClusterIPRange = serviceClusterIPRange
}
if c.ServiceReadWriteIP == nil {
// Select the first valid IP from ServiceClusterIPRange to use as the master service IP.
serviceReadWriteIP, err := ipallocator.GetIndexedIP(c.ServiceClusterIPRange, 1)
if err != nil {
glog.Fatalf("Failed to generate service read-write IP for master service: %v", err)
}
glog.V(4).Infof("Setting master service IP to %q (read-write).", serviceReadWriteIP)
c.ServiceReadWriteIP = serviceReadWriteIP
}
if c.ServiceNodePortRange.Size == 0 {
// TODO: Currently no way to specify an empty range (do we need to allow this?)
// We should probably allow this for clouds that don't require NodePort to do load-balancing (GCE)
// but then that breaks the strict nestedness of ServiceType.
// Review post-v1
defaultServiceNodePortRange := util.PortRange{Base: 30000, Size: 2768}
c.ServiceNodePortRange = defaultServiceNodePortRange
glog.Infof("Node port range unspecified. Defaulting to %v.", c.ServiceNodePortRange)
}
if c.MasterCount == 0 {
// Clearly, there will be at least one master.
c.MasterCount = 1
}
if c.ReadWritePort == 0 {
c.ReadWritePort = 6443
}
if c.CacheTimeout == 0 {
c.CacheTimeout = 5 * time.Second
}
for c.PublicAddress == nil || c.PublicAddress.IsUnspecified() {
// TODO: This should be done in the caller and just require a
// valid value to be passed in.
hostIP, err := util.ChooseHostInterface()
if err != nil {
glog.Fatalf("Unable to find suitable network address.error='%v' . "+
"Will try again in 5 seconds. Set the public address directly to avoid this wait.", err)
time.Sleep(5 * time.Second)
}
c.PublicAddress = hostIP
glog.Infof("Will report %v as public IP address.", c.PublicAddress)
}
if c.RequestContextMapper == nil {
c.RequestContextMapper = api.NewRequestContextMapper()
}
}
// New returns a new instance of Master from the given config.
// Certain config fields will be set to a default value if unset,
// including:
// ServiceClusterIPRange
// ServiceNodePortRange
// MasterCount
// ReadWritePort
// PublicAddress
// Certain config fields must be specified, including:
// KubeletClient
// Public fields:
// Handler -- The returned master has a field TopHandler which is an
// http.Handler which handles all the endpoints provided by the master,
// including the API, the UI, and miscelaneous debugging endpoints. All
// these are subject to authorization and authentication.
// InsecureHandler -- an http.Handler which handles all the same
// endpoints as Handler, but no authorization and authentication is done.
// Public methods:
// HandleWithAuth -- Allows caller to add an http.Handler for an endpoint
// that uses the same authentication and authorization (if any is configured)
// as the master's built-in endpoints.
// If the caller wants to add additional endpoints not using the master's
// auth, then the caller should create a handler for those endpoints, which delegates the
// any unhandled paths to "Handler".
func New(c *Config) *Master {
setDefaults(c)
if c.KubeletClient == nil {
glog.Fatalf("master.New() called with config.KubeletClient == nil")
}
// Select the first valid IP from serviceClusterIPRange to use as the master service IP.
serviceReadWriteIP, err := ipallocator.GetIndexedIP(c.ServiceClusterIPRange, 1)
if err != nil {
glog.Fatalf("Failed to generate service read-write IP for master service: %v", err)
}
glog.V(4).Infof("Setting master service IP to %q (read-write).", serviceReadWriteIP)
m := &Master{
serviceClusterIPRange: c.ServiceClusterIPRange,
serviceNodePortRange: c.ServiceNodePortRange,
rootWebService: new(restful.WebService),
enableCoreControllers: c.EnableCoreControllers,
enableLogsSupport: c.EnableLogsSupport,
enableUISupport: c.EnableUISupport,
enableSwaggerSupport: c.EnableSwaggerSupport,
enableProfiling: c.EnableProfiling,
apiPrefix: c.APIPrefix,
corsAllowedOriginList: c.CorsAllowedOriginList,
authenticator: c.Authenticator,
authorizer: c.Authorizer,
admissionControl: c.AdmissionControl,
v1beta3: !c.DisableV1Beta3,
v1: !c.DisableV1,
requestContextMapper: c.RequestContextMapper,
cacheTimeout: c.CacheTimeout,
minRequestTimeout: time.Duration(c.MinRequestTimeout) * time.Second,
masterCount: c.MasterCount,
externalHost: c.ExternalHost,
clusterIP: c.PublicAddress,
publicReadWritePort: c.ReadWritePort,
serviceReadWriteIP: serviceReadWriteIP,
// TODO: serviceReadWritePort should be passed in as an argument, it may not always be 443
serviceReadWritePort: 443,
installSSHKey: c.InstallSSHKey,
}
var handlerContainer *restful.Container
if c.RestfulContainer != nil {
m.mux = c.RestfulContainer.ServeMux
handlerContainer = c.RestfulContainer
} else {
mux := http.NewServeMux()
m.mux = mux
handlerContainer = NewHandlerContainer(mux)
}
m.handlerContainer = handlerContainer
// Use CurlyRouter to be able to use regular expressions in paths. Regular expressions are required in paths for example for proxy (where the path is proxy/{kind}/{name}/{*})
m.handlerContainer.Router(restful.CurlyRouter{})
m.muxHelper = &apiserver.MuxHelper{m.mux, []string{}}
m.init(c)
return m
}
