package configuration import ( "fmt" "strings" "time" "github.com/containous/flaeg" "github.com/containous/traefik-extra-service-fabric" "github.com/containous/traefik/acme" "github.com/containous/traefik/api" "github.com/containous/traefik/log" "github.com/containous/traefik/middlewares/tracing" "github.com/containous/traefik/ping" acmeprovider "github.com/containous/traefik/provider/acme" "github.com/containous/traefik/provider/boltdb" "github.com/containous/traefik/provider/consul" "github.com/containous/traefik/provider/consulcatalog" "github.com/containous/traefik/provider/docker" "github.com/containous/traefik/provider/dynamodb" "github.com/containous/traefik/provider/ecs" "github.com/containous/traefik/provider/etcd" "github.com/containous/traefik/provider/eureka" "github.com/containous/traefik/provider/file" "github.com/containous/traefik/provider/kubernetes" "github.com/containous/traefik/provider/marathon" "github.com/containous/traefik/provider/mesos" "github.com/containous/traefik/provider/rancher" "github.com/containous/traefik/provider/rest" "github.com/containous/traefik/provider/zk" "github.com/containous/traefik/tls" "github.com/containous/traefik/types" ) const ( // DefaultInternalEntryPointName the name of the default internal entry point DefaultInternalEntryPointName = "traefik" // DefaultHealthCheckInterval is the default health check interval. DefaultHealthCheckInterval = 30 * time.Second // DefaultDialTimeout when connecting to a backend server. DefaultDialTimeout = 30 * time.Second // DefaultIdleTimeout before closing an idle connection. DefaultIdleTimeout = 180 * time.Second // DefaultGraceTimeout controls how long Traefik serves pending requests // prior to shutting down. DefaultGraceTimeout = 10 * time.Second ) // GlobalConfiguration holds global configuration (with providers, etc.). // It's populated from the traefik configuration file passed as an argument to the binary. type GlobalConfiguration struct { LifeCycle *LifeCycle `description:"Timeouts influencing the server life cycle" export:"true"` GraceTimeOut flaeg.Duration `short:"g" description:"(Deprecated) Duration to give active requests a chance to finish before Traefik stops" export:"true"` // Deprecated Debug bool `short:"d" description:"Enable debug mode" export:"true"` CheckNewVersion bool `description:"Periodically check if a new version has been released" export:"true"` SendAnonymousUsage bool `description:"send periodically anonymous usage statistics" export:"true"` AccessLogsFile string `description:"(Deprecated) Access logs file" export:"true"` // Deprecated AccessLog *types.AccessLog `description:"Access log settings" export:"true"` TraefikLogsFile string `description:"(Deprecated) Traefik logs file. Stdout is used when omitted or empty" export:"true"` // Deprecated TraefikLog *types.TraefikLog `description:"Traefik log settings" export:"true"` Tracing *tracing.Tracing `description:"OpenTracing configuration" export:"true"` LogLevel string `short:"l" description:"Log level" export:"true"` EntryPoints EntryPoints `description:"Entrypoints definition using format: --entryPoints='Name:http Address::8000 Redirect.EntryPoint:https' --entryPoints='Name:https Address::4442 TLS:tests/traefik.crt,tests/traefik.key;prod/traefik.crt,prod/traefik.key'" export:"true"` Cluster *types.Cluster `description:"Enable clustering" export:"true"` Constraints types.Constraints `description:"Filter services by constraint, matching with service tags" export:"true"` ACME *acme.ACME `description:"Enable ACME (Let's Encrypt): automatic SSL" export:"true"` DefaultEntryPoints DefaultEntryPoints `description:"Entrypoints to be used by frontends that do not specify any entrypoint" export:"true"` ProvidersThrottleDuration flaeg.Duration `description:"Backends throttle duration: minimum duration between 2 events from providers before applying a new configuration. It avoids unnecessary reloads if multiples events are sent in a short amount of time." export:"true"` MaxIdleConnsPerHost int `description:"If non-zero, controls the maximum idle (keep-alive) to keep per-host. If zero, DefaultMaxIdleConnsPerHost is used" export:"true"` IdleTimeout flaeg.Duration `description:"(Deprecated) maximum amount of time an idle (keep-alive) connection will remain idle before closing itself." export:"true"` // Deprecated InsecureSkipVerify bool `description:"Disable SSL certificate verification" export:"true"` RootCAs tls.RootCAs `description:"Add cert file for self-signed certificate"` Retry *Retry `description:"Enable retry sending request if network error" export:"true"` HealthCheck *HealthCheckConfig `description:"Health check parameters" export:"true"` RespondingTimeouts *RespondingTimeouts `description:"Timeouts for incoming requests to the Traefik instance" export:"true"` ForwardingTimeouts *ForwardingTimeouts `description:"Timeouts for requests forwarded to the backend servers" export:"true"` Web *WebCompatibility `description:"(Deprecated) Enable Web backend with default settings" export:"true"` // Deprecated Docker *docker.Provider `description:"Enable Docker backend with default settings" export:"true"` File *file.Provider `description:"Enable File backend with default settings" export:"true"` Marathon *marathon.Provider `description:"Enable Marathon backend with default settings" export:"true"` Consul *consul.Provider `description:"Enable Consul backend with default settings" export:"true"` ConsulCatalog *consulcatalog.Provider `description:"Enable Consul catalog backend with default settings" export:"true"` Etcd *etcd.Provider `description:"Enable Etcd backend with default settings" export:"true"` Zookeeper *zk.Provider `description:"Enable Zookeeper backend with default settings" export:"true"` Boltdb *boltdb.Provider `description:"Enable Boltdb backend with default settings" export:"true"` Kubernetes *kubernetes.Provider `description:"Enable Kubernetes backend with default settings" export:"true"` Mesos *mesos.Provider `description:"Enable Mesos backend with default settings" export:"true"` Eureka *eureka.Provider `description:"Enable Eureka backend with default settings" export:"true"` ECS *ecs.Provider `description:"Enable ECS backend with default settings" export:"true"` Rancher *rancher.Provider `description:"Enable Rancher backend with default settings" export:"true"` DynamoDB *dynamodb.Provider `description:"Enable DynamoDB backend with default settings" export:"true"` ServiceFabric *servicefabric.Provider `description:"Enable Service Fabric backend with default settings" export:"true"` Rest *rest.Provider `description:"Enable Rest backend with default settings" export:"true"` API *api.Handler `description:"Enable api/dashboard" export:"true"` Metrics *types.Metrics `description:"Enable a metrics exporter" export:"true"` Ping *ping.Handler `description:"Enable ping" export:"true"` } // WebCompatibility is a configuration to handle compatibility with deprecated web provider options type WebCompatibility struct { Address string `description:"Web administration port" export:"true"` CertFile string `description:"SSL certificate" export:"true"` KeyFile string `description:"SSL certificate" export:"true"` ReadOnly bool `description:"Enable read only API" export:"true"` Statistics *types.Statistics `description:"Enable more detailed statistics" export:"true"` Metrics *types.Metrics `description:"Enable a metrics exporter" export:"true"` Path string `description:"Root path for dashboard and API" export:"true"` Auth *types.Auth `export:"true"` Debug bool `export:"true"` } func (gc *GlobalConfiguration) handleWebDeprecation() { if gc.Web != nil { log.Warn("web provider configuration is deprecated, you should use these options : api, rest provider, ping and metrics") if gc.API != nil || gc.Metrics != nil || gc.Ping != nil || gc.Rest != nil { log.Warn("web option is ignored if you use it with one of these options : api, rest provider, ping or metrics") return } gc.EntryPoints[DefaultInternalEntryPointName] = &EntryPoint{ Address: gc.Web.Address, Auth: gc.Web.Auth, } if gc.Web.CertFile != "" { gc.EntryPoints[DefaultInternalEntryPointName].TLS = &tls.TLS{ Certificates: []tls.Certificate{ { CertFile: tls.FileOrContent(gc.Web.CertFile), KeyFile: tls.FileOrContent(gc.Web.KeyFile), }, }, } } if gc.API == nil { gc.API = &api.Handler{ EntryPoint: DefaultInternalEntryPointName, Statistics: gc.Web.Statistics, Dashboard: true, } } if gc.Ping == nil { gc.Ping = &ping.Handler{ EntryPoint: DefaultInternalEntryPointName, } } if gc.Metrics == nil { gc.Metrics = gc.Web.Metrics } if !gc.Debug { gc.Debug = gc.Web.Debug } } } // SetEffectiveConfiguration adds missing configuration parameters derived from existing ones. // It also takes care of maintaining backwards compatibility. func (gc *GlobalConfiguration) SetEffectiveConfiguration(configFile string) { if len(gc.EntryPoints) == 0 { gc.EntryPoints = map[string]*EntryPoint{"http": { Address: ":80", ForwardedHeaders: &ForwardedHeaders{Insecure: true}, }} gc.DefaultEntryPoints = []string{"http"} } gc.handleWebDeprecation() if (gc.API != nil && gc.API.EntryPoint == DefaultInternalEntryPointName) || (gc.Ping != nil && gc.Ping.EntryPoint == DefaultInternalEntryPointName) || (gc.Metrics != nil && gc.Metrics.Prometheus != nil && gc.Metrics.Prometheus.EntryPoint == DefaultInternalEntryPointName) || (gc.Rest != nil && gc.Rest.EntryPoint == DefaultInternalEntryPointName) { if _, ok := gc.EntryPoints[DefaultInternalEntryPointName]; !ok { gc.EntryPoints[DefaultInternalEntryPointName] = &EntryPoint{Address: ":8080"} } } // ForwardedHeaders must be remove in the next breaking version for entryPointName := range gc.EntryPoints { entryPoint := gc.EntryPoints[entryPointName] if entryPoint.ForwardedHeaders == nil { entryPoint.ForwardedHeaders = &ForwardedHeaders{Insecure: true} } } // Make sure LifeCycle isn't nil to spare nil checks elsewhere. if gc.LifeCycle == nil { gc.LifeCycle = &LifeCycle{} } // Prefer legacy grace timeout parameter for backwards compatibility reasons. if gc.GraceTimeOut > 0 { log.Warn("top-level grace period configuration has been deprecated -- please use lifecycle grace period") gc.LifeCycle.GraceTimeOut = gc.GraceTimeOut } if gc.Eureka != nil { if gc.Eureka.Delay != 0 { log.Warn("Delay has been deprecated -- please use RefreshSeconds") gc.Eureka.RefreshSeconds = gc.Eureka.Delay } } if gc.Rancher != nil { // Ensure backwards compatibility for now if len(gc.Rancher.AccessKey) > 0 || len(gc.Rancher.Endpoint) > 0 || len(gc.Rancher.SecretKey) > 0 { if gc.Rancher.API == nil { gc.Rancher.API = &rancher.APIConfiguration{ AccessKey: gc.Rancher.AccessKey, SecretKey: gc.Rancher.SecretKey, Endpoint: gc.Rancher.Endpoint, } } log.Warn("Deprecated configuration found: rancher.[accesskey|secretkey|endpoint]. " + "Please use rancher.api.[accesskey|secretkey|endpoint] instead.") } if gc.Rancher.Metadata != nil && len(gc.Rancher.Metadata.Prefix) == 0 { gc.Rancher.Metadata.Prefix = "latest" } } if gc.API != nil { gc.API.Debug = gc.Debug } if gc.Web != nil && (gc.Web.Path == "" || !strings.HasSuffix(gc.Web.Path, "/")) { gc.Web.Path += "/" } // Try to fallback to traefik config file in case the file provider is enabled // but has no file name configured. if gc.File != nil && len(gc.File.Filename) == 0 { if len(configFile) > 0 { gc.File.Filename = configFile } else { log.Errorln("Error using file configuration backend, no filename defined") } } gc.initACMEProvider() } func (gc *GlobalConfiguration) initACMEProvider() { if gc.ACME != nil { // TODO: to remove in the futurs if len(gc.ACME.StorageFile) > 0 && len(gc.ACME.Storage) == 0 { log.Warn("ACME.StorageFile is deprecated, use ACME.Storage instead") gc.ACME.Storage = gc.ACME.StorageFile } if len(gc.ACME.DNSProvider) > 0 { log.Warn("ACME.DNSProvider is deprecated, use ACME.DNSChallenge instead") gc.ACME.DNSChallenge = &acmeprovider.DNSChallenge{Provider: gc.ACME.DNSProvider, DelayBeforeCheck: gc.ACME.DelayDontCheckDNS} } if gc.ACME.OnDemand { log.Warn("ACME.OnDemand is deprecated") } // TODO: Remove when Provider ACME will replace totally ACME // If provider file, use Provider ACME instead of ACME if gc.Cluster == nil { acmeprovider.Get().Configuration = &acmeprovider.Configuration{ OnHostRule: gc.ACME.OnHostRule, OnDemand: gc.ACME.OnDemand, Email: gc.ACME.Email, Storage: gc.ACME.Storage, HTTPChallenge: gc.ACME.HTTPChallenge, DNSChallenge: gc.ACME.DNSChallenge, Domains: gc.ACME.Domains, ACMELogging: gc.ACME.ACMELogging, CAServer: gc.ACME.CAServer, EntryPoint: gc.ACME.EntryPoint, } gc.ACME = nil } } } // ValidateConfiguration validate that configuration is coherent func (gc *GlobalConfiguration) ValidateConfiguration() { if gc.ACME != nil { if _, ok := gc.EntryPoints[gc.ACME.EntryPoint]; !ok { log.Fatalf("Unknown entrypoint %q for ACME configuration", gc.ACME.EntryPoint) } else { if gc.EntryPoints[gc.ACME.EntryPoint].TLS == nil { log.Fatalf("Entrypoint without TLS %q for ACME configuration", gc.ACME.EntryPoint) } } } else if acmeprovider.IsEnabled() { if _, ok := gc.EntryPoints[acmeprovider.Get().EntryPoint]; !ok { log.Fatalf("Unknown entrypoint %q for provider ACME configuration", gc.ACME.EntryPoint) } else { if gc.EntryPoints[acmeprovider.Get().EntryPoint].TLS == nil { log.Fatalf("Entrypoint without TLS %q for provider ACME configuration", gc.ACME.EntryPoint) } } } } // DefaultEntryPoints holds default entry points type DefaultEntryPoints []string // String is the method to format the flag's value, part of the flag.Value interface. // The String method's output will be used in diagnostics. func (dep *DefaultEntryPoints) String() string { return strings.Join(*dep, ",") } // Set is the method to set the flag value, part of the flag.Value interface. // Set's argument is a string to be parsed to set the flag. // It's a comma-separated list, so we split it. func (dep *DefaultEntryPoints) Set(value string) error { entrypoints := strings.Split(value, ",") if len(entrypoints) == 0 { return fmt.Errorf("bad DefaultEntryPoints format: %s", value) } for _, entrypoint := range entrypoints { *dep = append(*dep, entrypoint) } return nil } // Get return the EntryPoints map func (dep *DefaultEntryPoints) Get() interface{} { return *dep } // SetValue sets the EntryPoints map with val func (dep *DefaultEntryPoints) SetValue(val interface{}) { *dep = val.(DefaultEntryPoints) } // Type is type of the struct func (dep *DefaultEntryPoints) Type() string { return "defaultentrypoints" } // Retry contains request retry config type Retry struct { Attempts int `description:"Number of attempts" export:"true"` } // HealthCheckConfig contains health check configuration parameters. type HealthCheckConfig struct { Interval flaeg.Duration `description:"Default periodicity of enabled health checks" export:"true"` } // RespondingTimeouts contains timeout configurations for incoming requests to the Traefik instance. type RespondingTimeouts struct { ReadTimeout flaeg.Duration `description:"ReadTimeout is the maximum duration for reading the entire request, including the body. If zero, no timeout is set" export:"true"` WriteTimeout flaeg.Duration `description:"WriteTimeout is the maximum duration before timing out writes of the response. If zero, no timeout is set" export:"true"` IdleTimeout flaeg.Duration `description:"IdleTimeout is the maximum amount duration an idle (keep-alive) connection will remain idle before closing itself. Defaults to 180 seconds. If zero, no timeout is set" export:"true"` } // ForwardingTimeouts contains timeout configurations for forwarding requests to the backend servers. type ForwardingTimeouts struct { DialTimeout flaeg.Duration `description:"The amount of time to wait until a connection to a backend server can be established. Defaults to 30 seconds. If zero, no timeout exists" export:"true"` ResponseHeaderTimeout flaeg.Duration `description:"The amount of time to wait for a server's response headers after fully writing the request (including its body, if any). If zero, no timeout exists" export:"true"` } // ProxyProtocol contains Proxy-Protocol configuration type ProxyProtocol struct { Insecure bool TrustedIPs []string } // ForwardedHeaders Trust client forwarding headers type ForwardedHeaders struct { Insecure bool TrustedIPs []string } // LifeCycle contains configurations relevant to the lifecycle (such as the // shutdown phase) of Traefik. type LifeCycle struct { RequestAcceptGraceTimeout flaeg.Duration `description:"Duration to keep accepting requests before Traefik initiates the graceful shutdown procedure"` GraceTimeOut flaeg.Duration `description:"Duration to give active requests a chance to finish before Traefik stops"` }