269 lines
18 KiB
Go
269 lines
18 KiB
Go
package static
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import (
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"fmt"
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stdlog "log"
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"strings"
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"time"
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"github.com/containous/traefik/v2/pkg/log"
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"github.com/containous/traefik/v2/pkg/ping"
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acmeprovider "github.com/containous/traefik/v2/pkg/provider/acme"
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"github.com/containous/traefik/v2/pkg/provider/consulcatalog"
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"github.com/containous/traefik/v2/pkg/provider/docker"
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"github.com/containous/traefik/v2/pkg/provider/file"
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"github.com/containous/traefik/v2/pkg/provider/kubernetes/crd"
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"github.com/containous/traefik/v2/pkg/provider/kubernetes/ingress"
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"github.com/containous/traefik/v2/pkg/provider/kv/consul"
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"github.com/containous/traefik/v2/pkg/provider/kv/etcd"
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"github.com/containous/traefik/v2/pkg/provider/kv/redis"
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"github.com/containous/traefik/v2/pkg/provider/kv/zk"
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"github.com/containous/traefik/v2/pkg/provider/marathon"
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"github.com/containous/traefik/v2/pkg/provider/rancher"
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"github.com/containous/traefik/v2/pkg/provider/rest"
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"github.com/containous/traefik/v2/pkg/tls"
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"github.com/containous/traefik/v2/pkg/tracing/datadog"
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"github.com/containous/traefik/v2/pkg/tracing/elastic"
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"github.com/containous/traefik/v2/pkg/tracing/haystack"
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"github.com/containous/traefik/v2/pkg/tracing/instana"
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"github.com/containous/traefik/v2/pkg/tracing/jaeger"
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"github.com/containous/traefik/v2/pkg/tracing/zipkin"
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"github.com/containous/traefik/v2/pkg/types"
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assetfs "github.com/elazarl/go-bindata-assetfs"
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legolog "github.com/go-acme/lego/v3/log"
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"github.com/sirupsen/logrus"
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)
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const (
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// DefaultInternalEntryPointName the name of the default internal entry point
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DefaultInternalEntryPointName = "traefik"
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// DefaultGraceTimeout controls how long Traefik serves pending requests
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// prior to shutting down.
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DefaultGraceTimeout = 10 * time.Second
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// DefaultIdleTimeout before closing an idle connection.
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DefaultIdleTimeout = 180 * time.Second
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// DefaultAcmeCAServer is the default ACME API endpoint
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DefaultAcmeCAServer = "https://acme-v02.api.letsencrypt.org/directory"
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)
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// Configuration is the static configuration.
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type Configuration struct {
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Global *Global `description:"Global configuration options" json:"global,omitempty" toml:"global,omitempty" yaml:"global,omitempty" export:"true"`
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ServersTransport *ServersTransport `description:"Servers default transport." json:"serversTransport,omitempty" toml:"serversTransport,omitempty" yaml:"serversTransport,omitempty" export:"true"`
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EntryPoints EntryPoints `description:"Entry points definition." json:"entryPoints,omitempty" toml:"entryPoints,omitempty" yaml:"entryPoints,omitempty" export:"true"`
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Providers *Providers `description:"Providers configuration." json:"providers,omitempty" toml:"providers,omitempty" yaml:"providers,omitempty" export:"true"`
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API *API `description:"Enable api/dashboard." json:"api,omitempty" toml:"api,omitempty" yaml:"api,omitempty" label:"allowEmpty" export:"true"`
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Metrics *types.Metrics `description:"Enable a metrics exporter." json:"metrics,omitempty" toml:"metrics,omitempty" yaml:"metrics,omitempty" export:"true"`
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Ping *ping.Handler `description:"Enable ping." json:"ping,omitempty" toml:"ping,omitempty" yaml:"ping,omitempty" label:"allowEmpty" export:"true"`
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Log *types.TraefikLog `description:"Traefik log settings." json:"log,omitempty" toml:"log,omitempty" yaml:"log,omitempty" label:"allowEmpty" export:"true"`
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AccessLog *types.AccessLog `description:"Access log settings." json:"accessLog,omitempty" toml:"accessLog,omitempty" yaml:"accessLog,omitempty" label:"allowEmpty" export:"true"`
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Tracing *Tracing `description:"OpenTracing configuration." json:"tracing,omitempty" toml:"tracing,omitempty" yaml:"tracing,omitempty" label:"allowEmpty" export:"true"`
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HostResolver *types.HostResolverConfig `description:"Enable CNAME Flattening." json:"hostResolver,omitempty" toml:"hostResolver,omitempty" yaml:"hostResolver,omitempty" label:"allowEmpty" export:"true"`
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CertificatesResolvers map[string]CertificateResolver `description:"Certificates resolvers configuration." json:"certificatesResolvers,omitempty" toml:"certificatesResolvers,omitempty" yaml:"certificatesResolvers,omitempty" export:"true"`
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}
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// CertificateResolver contains the configuration for the different types of certificates resolver.
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type CertificateResolver struct {
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ACME *acmeprovider.Configuration `description:"Enable ACME (Let's Encrypt): automatic SSL." json:"acme,omitempty" toml:"acme,omitempty" yaml:"acme,omitempty" export:"true"`
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}
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// Global holds the global configuration.
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type Global struct {
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CheckNewVersion bool `description:"Periodically check if a new version has been released." json:"checkNewVersion,omitempty" toml:"checkNewVersion,omitempty" yaml:"checkNewVersion,omitempty" label:"allowEmpty" export:"true"`
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SendAnonymousUsage bool `description:"Periodically send anonymous usage statistics. If the option is not specified, it will be enabled by default." json:"sendAnonymousUsage,omitempty" toml:"sendAnonymousUsage,omitempty" yaml:"sendAnonymousUsage,omitempty" label:"allowEmpty" export:"true"`
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InsecureSNI bool `description:"Allow domain fronting. If the option is not specified, it will be disabled by default." json:"insecureSNI,omitempty" toml:"insecureSNI,omitempty" yaml:"insecureSNI,omitempty" label:"allowEmpty" export:"true"`
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}
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// ServersTransport options to configure communication between Traefik and the servers.
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type ServersTransport struct {
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InsecureSkipVerify bool `description:"Disable SSL certificate verification." json:"insecureSkipVerify,omitempty" toml:"insecureSkipVerify,omitempty" yaml:"insecureSkipVerify,omitempty" export:"true"`
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RootCAs []tls.FileOrContent `description:"Add cert file for self-signed certificate." json:"rootCAs,omitempty" toml:"rootCAs,omitempty" yaml:"rootCAs,omitempty"`
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MaxIdleConnsPerHost int `description:"If non-zero, controls the maximum idle (keep-alive) to keep per-host. If zero, DefaultMaxIdleConnsPerHost is used" json:"maxIdleConnsPerHost,omitempty" toml:"maxIdleConnsPerHost,omitempty" yaml:"maxIdleConnsPerHost,omitempty" export:"true"`
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ForwardingTimeouts *ForwardingTimeouts `description:"Timeouts for requests forwarded to the backend servers." json:"forwardingTimeouts,omitempty" toml:"forwardingTimeouts,omitempty" yaml:"forwardingTimeouts,omitempty" export:"true"`
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}
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// API holds the API configuration.
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type API struct {
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Insecure bool `description:"Activate API directly on the entryPoint named traefik." json:"insecure,omitempty" toml:"insecure,omitempty" yaml:"insecure,omitempty" export:"true"`
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Dashboard bool `description:"Activate dashboard." json:"dashboard,omitempty" toml:"dashboard,omitempty" yaml:"dashboard,omitempty" export:"true"`
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Debug bool `description:"Enable additional endpoints for debugging and profiling." json:"debug,omitempty" toml:"debug,omitempty" yaml:"debug,omitempty" export:"true"`
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// TODO: Re-enable statistics
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// Statistics *types.Statistics `description:"Enable more detailed statistics." json:"statistics,omitempty" toml:"statistics,omitempty" yaml:"statistics,omitempty" export:"true" label:"allowEmpty"`
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DashboardAssets *assetfs.AssetFS `json:"-" toml:"-" yaml:"-" label:"-"`
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}
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// SetDefaults sets the default values.
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func (a *API) SetDefaults() {
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a.Dashboard = true
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}
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// RespondingTimeouts contains timeout configurations for incoming requests to the Traefik instance.
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type RespondingTimeouts struct {
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ReadTimeout types.Duration `description:"ReadTimeout is the maximum duration for reading the entire request, including the body. If zero, no timeout is set." json:"readTimeout,omitempty" toml:"readTimeout,omitempty" yaml:"readTimeout,omitempty" export:"true"`
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WriteTimeout types.Duration `description:"WriteTimeout is the maximum duration before timing out writes of the response. If zero, no timeout is set." json:"writeTimeout,omitempty" toml:"writeTimeout,omitempty" yaml:"writeTimeout,omitempty" export:"true"`
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IdleTimeout types.Duration `description:"IdleTimeout is the maximum amount duration an idle (keep-alive) connection will remain idle before closing itself. If zero, no timeout is set." json:"idleTimeout,omitempty" toml:"idleTimeout,omitempty" yaml:"idleTimeout,omitempty" export:"true"`
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}
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// SetDefaults sets the default values.
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func (a *RespondingTimeouts) SetDefaults() {
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a.IdleTimeout = types.Duration(DefaultIdleTimeout)
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}
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// ForwardingTimeouts contains timeout configurations for forwarding requests to the backend servers.
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type ForwardingTimeouts struct {
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DialTimeout types.Duration `description:"The amount of time to wait until a connection to a backend server can be established. If zero, no timeout exists." json:"dialTimeout,omitempty" toml:"dialTimeout,omitempty" yaml:"dialTimeout,omitempty" export:"true"`
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ResponseHeaderTimeout types.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." json:"responseHeaderTimeout,omitempty" toml:"responseHeaderTimeout,omitempty" yaml:"responseHeaderTimeout,omitempty" export:"true"`
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IdleConnTimeout types.Duration `description:"The maximum period for which an idle HTTP keep-alive connection will remain open before closing itself" json:"idleConnTimeout,omitempty" toml:"idleConnTimeout,omitempty" yaml:"idleConnTimeout,omitempty" export:"true"`
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}
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// SetDefaults sets the default values.
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func (f *ForwardingTimeouts) SetDefaults() {
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f.DialTimeout = types.Duration(30 * time.Second)
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f.IdleConnTimeout = types.Duration(90 * time.Second)
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}
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// LifeCycle contains configurations relevant to the lifecycle (such as the shutdown phase) of Traefik.
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type LifeCycle struct {
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RequestAcceptGraceTimeout types.Duration `description:"Duration to keep accepting requests before Traefik initiates the graceful shutdown procedure." json:"requestAcceptGraceTimeout,omitempty" toml:"requestAcceptGraceTimeout,omitempty" yaml:"requestAcceptGraceTimeout,omitempty" export:"true"`
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GraceTimeOut types.Duration `description:"Duration to give active requests a chance to finish before Traefik stops." json:"graceTimeOut,omitempty" toml:"graceTimeOut,omitempty" yaml:"graceTimeOut,omitempty" export:"true"`
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}
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// SetDefaults sets the default values.
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func (a *LifeCycle) SetDefaults() {
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a.GraceTimeOut = types.Duration(DefaultGraceTimeout)
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}
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// Tracing holds the tracing configuration.
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type Tracing struct {
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ServiceName string `description:"Set the name for this service." json:"serviceName,omitempty" toml:"serviceName,omitempty" yaml:"serviceName,omitempty" export:"true"`
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SpanNameLimit int `description:"Set the maximum character limit for Span names (default 0 = no limit)." json:"spanNameLimit,omitempty" toml:"spanNameLimit,omitempty" yaml:"spanNameLimit,omitempty" export:"true"`
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Jaeger *jaeger.Config `description:"Settings for Jaeger." json:"jaeger,omitempty" toml:"jaeger,omitempty" yaml:"jaeger,omitempty" export:"true" label:"allowEmpty"`
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Zipkin *zipkin.Config `description:"Settings for Zipkin." json:"zipkin,omitempty" toml:"zipkin,omitempty" yaml:"zipkin,omitempty" export:"true" label:"allowEmpty"`
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Datadog *datadog.Config `description:"Settings for Datadog." json:"datadog,omitempty" toml:"datadog,omitempty" yaml:"datadog,omitempty" export:"true" label:"allowEmpty"`
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Instana *instana.Config `description:"Settings for Instana." json:"instana,omitempty" toml:"instana,omitempty" yaml:"instana,omitempty" export:"true" label:"allowEmpty"`
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Haystack *haystack.Config `description:"Settings for Haystack." json:"haystack,omitempty" toml:"haystack,omitempty" yaml:"haystack,omitempty" export:"true" label:"allowEmpty"`
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Elastic *elastic.Config `description:"Settings for Elastic." json:"elastic,omitempty" toml:"elastic,omitempty" yaml:"elastic,omitempty" export:"true" label:"allowEmpty"`
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}
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// SetDefaults sets the default values.
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func (t *Tracing) SetDefaults() {
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t.ServiceName = "traefik"
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t.SpanNameLimit = 0
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}
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// Providers contains providers configuration.
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type Providers struct {
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ProvidersThrottleDuration types.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." json:"providersThrottleDuration,omitempty" toml:"providersThrottleDuration,omitempty" yaml:"providersThrottleDuration,omitempty" export:"true"`
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Docker *docker.Provider `description:"Enable Docker backend with default settings." json:"docker,omitempty" toml:"docker,omitempty" yaml:"docker,omitempty" export:"true" label:"allowEmpty"`
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File *file.Provider `description:"Enable File backend with default settings." json:"file,omitempty" toml:"file,omitempty" yaml:"file,omitempty" export:"true"`
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Marathon *marathon.Provider `description:"Enable Marathon backend with default settings." json:"marathon,omitempty" toml:"marathon,omitempty" yaml:"marathon,omitempty" export:"true" label:"allowEmpty"`
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KubernetesIngress *ingress.Provider `description:"Enable Kubernetes backend with default settings." json:"kubernetesIngress,omitempty" toml:"kubernetesIngress,omitempty" yaml:"kubernetesIngress,omitempty" export:"true" label:"allowEmpty"`
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KubernetesCRD *crd.Provider `description:"Enable Kubernetes backend with default settings." json:"kubernetesCRD,omitempty" toml:"kubernetesCRD,omitempty" yaml:"kubernetesCRD,omitempty" export:"true" label:"allowEmpty"`
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Rest *rest.Provider `description:"Enable Rest backend with default settings." json:"rest,omitempty" toml:"rest,omitempty" yaml:"rest,omitempty" export:"true" label:"allowEmpty"`
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Rancher *rancher.Provider `description:"Enable Rancher backend with default settings." json:"rancher,omitempty" toml:"rancher,omitempty" yaml:"rancher,omitempty" export:"true" label:"allowEmpty"`
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ConsulCatalog *consulcatalog.Provider `description:"Enable ConsulCatalog backend with default settings." json:"consulCatalog,omitempty" toml:"consulCatalog,omitempty" yaml:"consulCatalog,omitempty"`
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Consul *consul.Provider `description:"Enable Consul backend with default settings." json:"consul,omitempty" toml:"consul,omitempty" yaml:"consul,omitempty" export:"true" label:"allowEmpty"`
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Etcd *etcd.Provider `description:"Enable Etcd backend with default settings." json:"etcd,omitempty" toml:"etcd,omitempty" yaml:"etcd,omitempty" export:"true" label:"allowEmpty"`
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ZooKeeper *zk.Provider `description:"Enable ZooKeeper backend with default settings." json:"zooKeeper,omitempty" toml:"zooKeeper,omitempty" yaml:"zooKeeper,omitempty" export:"true" label:"allowEmpty"`
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Redis *redis.Provider `description:"Enable Redis backend with default settings." json:"redis,omitempty" toml:"redis,omitempty" yaml:"redis,omitempty" export:"true" label:"allowEmpty"`
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}
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// SetEffectiveConfiguration adds missing configuration parameters derived from existing ones.
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// It also takes care of maintaining backwards compatibility.
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func (c *Configuration) SetEffectiveConfiguration() {
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// Creates the default entry point if needed
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if len(c.EntryPoints) == 0 {
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ep := &EntryPoint{Address: ":80"}
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ep.SetDefaults()
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c.EntryPoints = EntryPoints{"http": ep}
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}
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// Creates the internal traefik entry point if needed
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if (c.API != nil && c.API.Insecure) ||
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(c.Ping != nil && !c.Ping.ManualRouting && c.Ping.EntryPoint == DefaultInternalEntryPointName) ||
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(c.Metrics != nil && c.Metrics.Prometheus != nil && !c.Metrics.Prometheus.ManualRouting && c.Metrics.Prometheus.EntryPoint == DefaultInternalEntryPointName) ||
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(c.Providers != nil && c.Providers.Rest != nil && c.Providers.Rest.Insecure) {
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if _, ok := c.EntryPoints[DefaultInternalEntryPointName]; !ok {
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ep := &EntryPoint{Address: ":8080"}
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ep.SetDefaults()
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c.EntryPoints[DefaultInternalEntryPointName] = ep
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}
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}
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if c.Providers.Docker != nil {
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if c.Providers.Docker.SwarmModeRefreshSeconds <= 0 {
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c.Providers.Docker.SwarmModeRefreshSeconds = types.Duration(15 * time.Second)
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}
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}
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if c.Providers.Rancher != nil {
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if c.Providers.Rancher.RefreshSeconds <= 0 {
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c.Providers.Rancher.RefreshSeconds = 15
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}
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}
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c.initACMEProvider()
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}
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func (c *Configuration) initACMEProvider() {
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for _, resolver := range c.CertificatesResolvers {
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if resolver.ACME != nil {
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resolver.ACME.CAServer = getSafeACMECAServer(resolver.ACME.CAServer)
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}
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}
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legolog.Logger = stdlog.New(log.WithoutContext().WriterLevel(logrus.DebugLevel), "legolog: ", 0)
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}
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// ValidateConfiguration validate that configuration is coherent.
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func (c *Configuration) ValidateConfiguration() error {
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var acmeEmail string
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for name, resolver := range c.CertificatesResolvers {
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if resolver.ACME == nil {
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continue
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}
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if len(resolver.ACME.Storage) == 0 {
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return fmt.Errorf("unable to initialize certificates resolver %q with no storage location for the certificates", name)
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}
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if acmeEmail != "" && resolver.ACME.Email != acmeEmail {
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return fmt.Errorf("unable to initialize certificates resolver %q, all the acme resolvers must use the same email", name)
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}
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acmeEmail = resolver.ACME.Email
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}
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return nil
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}
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func getSafeACMECAServer(caServerSrc string) string {
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if len(caServerSrc) == 0 {
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return DefaultAcmeCAServer
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}
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if strings.HasPrefix(caServerSrc, "https://acme-v01.api.letsencrypt.org") {
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caServer := strings.Replace(caServerSrc, "v01", "v02", 1)
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log.WithoutContext().
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Warnf("The CA server %[1]q refers to a v01 endpoint of the ACME API, please change to %[2]q. Fallback to %[2]q.", caServerSrc, caServer)
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return caServer
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}
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if strings.HasPrefix(caServerSrc, "https://acme-staging.api.letsencrypt.org") {
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caServer := strings.Replace(caServerSrc, "https://acme-staging.api.letsencrypt.org", "https://acme-staging-v02.api.letsencrypt.org", 1)
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log.WithoutContext().
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Warnf("The CA server %[1]q refers to a v01 endpoint of the ACME API, please change to %[2]q. Fallback to %[2]q.", caServerSrc, caServer)
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return caServer
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}
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return caServerSrc
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}
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