config

package
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 Go to latest Published: Sep 17, 2018 License: Apache-2.0 Imports: 30 Imported by: 0

Documentation

Overview

Package 'config' provides facilities for configuring Teleport daemons including

  • parsing YAML configuration
  • parsing CLI flags

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func ApplyFileConfig 

func ApplyFileConfig(fc *FileConfig, cfg *service.Config) error

ApplyFileConfig applies configuration from a YAML file to Teleport runtime config

func Configure 

func Configure(clf *CommandLineFlags, cfg *service.Config) error

Configure merges command line arguments with what's in a configuration file with CLI commands taking precedence

Types

type Auth 

type Auth struct {
	Service `yaml:",inline"`

	// ProxyProtocol turns on support for HAProxy proxy protocol
	// this is the option that has be turned on only by administrator,
	// as only admin knows whether service is in front of trusted load balancer
	// or not.
	ProxyProtocol string `yaml:"proxy_protocol,omitempty"`

	// ClusterName is the name of the CA who manages this cluster
	ClusterName ClusterName `yaml:"cluster_name,omitempty"`

	// StaticTokens are pre-defined host provisioning tokens supplied via config file for
	// environments where paranoid security is not needed
	//
	// Each token string has the following format: "role1,role2,..:token",
	// for exmple: "auth,proxy,node:MTIzNGlvemRmOWE4MjNoaQo"
	StaticTokens StaticTokens `yaml:"tokens,omitempty"`

	// Authentication holds authentication configuration information like authentication
	// type, second factor type, specific connector information, etc.
	Authentication *AuthenticationConfig `yaml:"authentication,omitempty"`

	// SessionRecording determines where the session is recorded: node, proxy, or off.
	SessionRecording string `yaml:"session_recording"`

	// ProxyChecksHostKeys is used when the proxy is in recording mode and
	// determines if the proxy will check the host key of the client or not.
	ProxyChecksHostKeys string `yaml:"proxy_checks_host_keys,omitempty"`

	// LicenseFile is a path to the license file. The path can be either absolute or
	// relative to the global data dir
	LicenseFile string `yaml:"license_file,omitempty"`

	// FOR INTERNAL USE:
	// Authorities : 3rd party certificate authorities (CAs) this auth service trusts.
	Authorities []Authority `yaml:"authorities,omitempty"`

	// FOR INTERNAL USE:
	// ReverseTunnels is a list of SSH tunnels to 3rd party proxy services (used to talk
	// to 3rd party auth servers we trust)
	ReverseTunnels []ReverseTunnel `yaml:"reverse_tunnels,omitempty"`

	// TrustedClustersFile is a file path to a file containing public CA keys
	// of clusters we trust. One key per line, those starting with '#' are comments
	// Deprecated: Remove in Teleport 2.4.1.
	TrustedClusters []TrustedCluster `yaml:"trusted_clusters,omitempty"`

	// OIDCConnectors is a list of trusted OpenID Connect Identity providers
	// Deprecated: Remove in Teleport 2.4.1.
	OIDCConnectors []OIDCConnector `yaml:"oidc_connectors,omitempty"`

	// Configuration for "universal 2nd factor"
	// Deprecated: Remove in Teleport 2.4.1.
	U2F U2F `yaml:"u2f,omitempty"`

	// DynamicConfig determines when file configuration is pushed to the backend. Setting
	// it here overrides defaults.
	// Deprecated: Remove in Teleport 2.4.1.
	DynamicConfig *bool `yaml:"dynamic_config,omitempty"`

	// PublicAddr sets SSH host principals and TLS DNS names to auth
	// server certificates
	PublicAddr utils.Strings `yaml:"public_addr,omitempty"`

	// ClientIdleTimeout sets global cluster default setting for client idle timeouts
	ClientIdleTimeout services.Duration `yaml:"client_idle_timeout"`

	// DisconnectExpiredCert provides disconnect expired certificate setting -
	// if true, connections with expired client certificates will get disconnected
	DisconnectExpiredCert services.Bool `yaml:"disconnect_expired_cert"`

	// KubeCACertFile is a path to kubernetes certificate authority certificate file,
	// used in cases when auth server is deployed outside of the kubernetes
	// cluster.
	KubeCACertFile string `yaml:"kubernetes_ca_cert_file,omitempty"`
}

Auth is 'auth_service' section of the config file

type AuthenticationConfig 

type AuthenticationConfig struct {
	Type          string                 `yaml:"type"`
	SecondFactor  string                 `yaml:"second_factor,omitempty"`
	ConnectorName string                 `yaml:"connector_name,omitempty"`
	U2F           *UniversalSecondFactor `yaml:"u2f,omitempty"`

	// TODO: OIDC connection is DEPRECATED!!!! Users are supposed to use resources
	// for configuring OIDC connectors
	OIDC *OIDCConnector `yaml:"oidc,omitempty"`
}

AuthenticationConfig describes the auth_service/authentication section of teleport.yaml

func (*AuthenticationConfig) Parse 

func (a *AuthenticationConfig) Parse() (services.AuthPreference, services.OIDCConnector, error)

Parse returns the Authentication Configuration in two parts: AuthPreference (type, second factor, u2f) and OIDCConnector.

type Authority 

type Authority struct {
	// Type is either user or host certificate authority
	Type services.CertAuthType `yaml:"type"`
	// DomainName identifies domain name this authority serves,
	// for host authorities that means base hostname of all servers,
	// for user authorities that means organization name
	DomainName string `yaml:"domain_name"`
	// Checkers is a list of SSH public keys that can be used to check
	// certificate signatures in OpenSSH authorized keys format
	CheckingKeys []string `yaml:"checking_keys"`
	// CheckingKeyFiles is a list of files
	CheckingKeyFiles []string `yaml:"checking_key_files"`
	// SigningKeys is a list of PEM-encoded private keys used for signing
	SigningKeys []string `yaml:"signing_keys"`
	// SigningKeyFiles is a list of paths to PEM encoded private keys used for signing
	SigningKeyFiles []string `yaml:"signing_key_files"`
	// AllowedLogins is a list of allowed logins for users within
	// this certificate authority
	AllowedLogins []string `yaml:"allowed_logins"`
}

Authority is a host or user certificate authority that can check and if it has private key stored as well, sign it too

func (*Authority) Parse 

func (a *Authority) Parse() (services.CertAuthority, services.Role, error)

Parse reads values and returns parsed CertAuthority

type CachePolicy 

type CachePolicy struct {
	// EnabledFlag enables or disables cache
	EnabledFlag string `yaml:"enabled,omitempty"`
	// TTL sets maximum TTL for the cached values
	TTL string `yaml:"ttl,omitempty"`
}

CachePolicy is used to control local cache

func (*CachePolicy) Enabled 

func (c *CachePolicy) Enabled() bool

Enabled determines if a given "_service" section has been set to 'true'

func (*CachePolicy) NeverExpires 

func (c *CachePolicy) NeverExpires() bool

NeverExpires returns if cache never expires by itself

func (*CachePolicy) Parse 

func (c *CachePolicy) Parse() (*service.CachePolicy, error)

Parse parses cache policy from Teleport config

type ClaimMapping 

type ClaimMapping struct {
	// Claim is OIDC claim name
	Claim string `yaml:"claim"`
	// Value is claim value to match
	Value string `yaml:"value"`
	// Roles is a list of teleport roles to match
	Roles []string `yaml:"roles,omitempty"`
	// RoleTemplate is a template for a role that will be filled
	// with data from claims.
	RoleTemplate *services.RoleV2 `yaml:"role_template,omitempty"`
}

ClaimMapping is OIDC claim mapping that maps claim name to teleport roles

type ClusterName 

type ClusterName string

func (ClusterName) Parse 

func (c ClusterName) Parse() (services.ClusterName, error)

type CommandLabel 

type CommandLabel struct {
	Name    string        `yaml:"name"`
	Command []string      `yaml:"command,flow"`
	Period  time.Duration `yaml:"period"`
}

CommandLabel is `command` section of `ssh_service` in the config file

type CommandLineFlags 

type CommandLineFlags struct {
	// --name flag
	NodeName string
	// --auth-server flag
	AuthServerAddr string
	// --token flag
	AuthToken string
	// --listen-ip flag
	ListenIP net.IP
	// --advertise-ip flag
	AdvertiseIP string
	// --config flag
	ConfigFile string
	// ConfigString is a base64 encoded configuration string
	// set by --config-string or TELEPORT_CONFIG environment variable
	ConfigString string
	// --roles flag
	Roles string
	// -d flag
	Debug bool

	// --insecure-no-tls flag
	DisableTLS bool

	// --labels flag
	Labels string
	// --pid-file flag
	PIDFile string
	// DiagnosticAddr is listen address for diagnostic endpoint
	DiagnosticAddr string
	// PermitUserEnvironment enables reading of ~/.tsh/environment
	// when creating a new session.
	PermitUserEnvironment bool

	// Insecure mode is controlled by --insecure flag and in this mode
	// Teleport won't check certificates when connecting to trusted clusters
	// It's useful for learning Teleport (following quick starts, etc).
	InsecureMode bool
}

CommandLineFlags stores command line flag values, it's a much simplified subset of Teleport configuration (which is fully expressed via YAML config file)

type ConnectionLimits 

type ConnectionLimits struct {
	MaxConnections int64            `yaml:"max_connections"`
	MaxUsers       int              `yaml:"max_users"`
	Rates          []ConnectionRate `yaml:"rates,omitempty"`
}

ConnectionLimits sets up connection limiter

type ConnectionRate 

type ConnectionRate struct {
	Period  time.Duration `yaml:"period"`
	Average int64         `yaml:"average"`
	Burst   int64         `yaml:"burst"`
}

ConnectionRate configures rate limiter

type FileConfig 

type FileConfig struct {
	Global `yaml:"teleport,omitempty"`
	Auth   Auth  `yaml:"auth_service,omitempty"`
	SSH    SSH   `yaml:"ssh_service,omitempty"`
	Proxy  Proxy `yaml:"proxy_service,omitempty"`
}

FileConfig structre represents the teleport configuration stored in a config file in YAML format (usually /etc/teleport.yaml)

Use config.ReadFromFile() to read the parsed FileConfig from a YAML file.

func MakeSampleFileConfig 

func MakeSampleFileConfig() (fc *FileConfig)

MakeSampleFileConfig returns a sample config structure populated by defaults, useful to generate sample configuration files

func ReadConfig 

func ReadConfig(reader io.Reader) (*FileConfig, error)

ReadConfig reads Teleport configuration from reader in YAML format

func ReadConfigFile 

func ReadConfigFile(cliConfigPath string) (*FileConfig, error)

readConfigFile reads /etc/teleport.yaml (or whatever is passed via --config flag) and overrides values in 'cfg' structure

func ReadFromFile 

func ReadFromFile(filePath string) (*FileConfig, error)

ReadFromFile reads Teleport configuration from a file. Currently only YAML format is supported

func ReadFromString 

func ReadFromString(configString string) (*FileConfig, error)

ReadFromString reads values from base64 encoded byte string

func (*FileConfig) Check 

func (conf *FileConfig) Check() error

Check ensures that the ciphers, kex algorithms, and mac algorithms set are supported by golang.org/x/crypto/ssh. This ensures we don't start Teleport with invalid configuration.

func (*FileConfig) DebugDumpToYAML 

func (conf *FileConfig) DebugDumpToYAML() string

DebugDumpToYAML allows for quick YAML dumping of the config

type Global 

type Global struct {
	NodeName    string           `yaml:"nodename,omitempty"`
	DataDir     string           `yaml:"data_dir,omitempty"`
	PIDFile     string           `yaml:"pid_file,omitempty"`
	AuthToken   string           `yaml:"auth_token,omitempty"`
	AuthServers []string         `yaml:"auth_servers,omitempty"`
	Limits      ConnectionLimits `yaml:"connection_limits,omitempty"`
	Logger      Log              `yaml:"log,omitempty"`
	Storage     backend.Config   `yaml:"storage,omitempty"`
	AdvertiseIP string           `yaml:"advertise_ip,omitempty"`
	CachePolicy CachePolicy      `yaml:"cache,omitempty"`
	SeedConfig  *bool            `yaml:"seed_config,omitempty"`

	// Keys holds the list of SSH key/cert pairs used by all services
	// Each service (like proxy, auth, node) can find the key it needs
	// by looking into certificate
	Keys []KeyPair `yaml:"keys,omitempty"`

	// CipherSuites is a list of TLS ciphersuites that Teleport supports. If
	// omitted, a Teleport selected list of defaults will be used.
	CipherSuites []string `yaml:"ciphersuites,omitempty"`

	// Ciphers is a list of SSH ciphers that the server supports. If omitted,
	// the defaults will be used.
	Ciphers []string `yaml:"ciphers,omitempty"`

	// KEXAlgorithms is a list of SSH key exchange (KEX) algorithms that the
	// server supports. If omitted, the defaults will be used.
	KEXAlgorithms []string `yaml:"kex_algos,omitempty"`

	// MACAlgorithms is a list of SSH message authentication codes (MAC) that
	// the server supports. If omitted the defaults will be used.
	MACAlgorithms []string `yaml:"mac_algos,omitempty"`
}

Global is 'teleport' (global) section of the config file

type KeyPair 

type KeyPair struct {
	// PrivateKeyFile is a path to file with private key
	PrivateKeyFile string `yaml:"private_key_file"`
	// CertFile is a path to file with OpenSSH certificate
	CertFile string `yaml:"cert_file"`
	// PrivateKey is PEM encoded OpenSSH private key
	PrivateKey string `yaml:"private_key"`
	// Cert is certificate in OpenSSH authorized keys format
	Cert string `yaml:"cert"`
	// TLSCert is TLS certificate in PEM format
	TLSCert string `yaml:"tls_cert"`
	// TLSCACert is TLS certificate in PEM format for trusted CA
	TLSCACert string `yaml:"tls_ca_cert"`
}

KeyPair is a pair of private key and certificates

func (*KeyPair) Identity 

func (k *KeyPair) Identity() (*auth.Identity, error)

Identity parses keypair into auth server identity

type Kube 

type Kube struct {
	// Service is a generic service configuration section
	Service `yaml:",inline"`
	// KubeAPIAddr is an address of a target kubernetes API server
	APIAddr string `yaml:"api_addr,omitempty"`
	// PublicAddr is a publicly advertised address of the kubernetes proxy
	PublicAddr utils.Strings `yaml:"public_addr,omitempty"`
}

Kube is a `kubernetes_service`

type Log 

type Log struct {
	// Output defines where logs go. It can be one of the following: "stderr", "stdout" or
	// a path to a log file
	Output string `yaml:"output,omitempty"`
	// Severity defines how verbose the log will be. Possible valus are "error", "info", "warn"
	Severity string `yaml:"severity,omitempty"`
}

Log configures teleport logging

type OIDCConnector 

type OIDCConnector struct {
	// ID is a provider id, 'e.g.' google, used internally
	ID string `yaml:"id"`
	// Issuer URL is the endpoint of the provider, e.g. https://accounts.google.com
	IssuerURL string `yaml:"issuer_url"`
	// ClientID is id for authentication client (in our case it's our Auth server)
	ClientID string `yaml:"client_id"`
	// ClientSecret is used to authenticate our client and should not
	// be visible to end user
	ClientSecret string `yaml:"client_secret"`
	// RedirectURL - Identity provider will use this URL to redirect
	// client's browser back to it after successful authentication
	// Should match the URL on Provider's side
	RedirectURL string `yaml:"redirect_url"`
	// ACR is the acr_values parameter to be sent with an authorization request.
	ACR string `yaml:"acr_values,omitempty"`
	// Provider is the identity provider we connect to. This field is
	// only required if using acr_values.
	Provider string `yaml:"provider,omitempty"`
	// Display controls how this connector is displayed
	Display string `yaml:"display"`
	// Scope is a list of additional scopes to request from OIDC
	// note that oidc and email scopes are always requested
	Scope []string `yaml:"scope"`
	// ClaimsToRoles is a list of mappings of claims to roles
	ClaimsToRoles []ClaimMapping `yaml:"claims_to_roles"`
}

OIDCConnector specifies configuration fo Open ID Connect compatible external identity provider, e.g. google in some organisation

func (*OIDCConnector) Parse 

func (o *OIDCConnector) Parse() (services.OIDCConnector, error)

Parse parses config struct into services connector and checks if it's valid

type PAM 

type PAM struct {
	// Enabled controls if PAM will be used or not.
	Enabled string `yaml:"enabled"`

	// ServiceName is the name of the PAM policy to apply.
	ServiceName string `yaml:"service_name"`
}

PAM is configuration for Pluggable Authentication Modules (PAM).

func (*PAM) Parse 

func (p *PAM) Parse() *pam.Config

Parse returns a parsed pam.Config.

type Proxy 

type Proxy struct {
	// Service is a generic service configuration section
	Service `yaml:",inline"`
	// WebAddr is a web UI listen address
	WebAddr string `yaml:"web_listen_addr,omitempty"`
	// TunAddr is a reverse tunnel address
	TunAddr string `yaml:"tunnel_listen_addr,omitempty"`
	// KeyFile is a TLS key file
	KeyFile string `yaml:"https_key_file,omitempty"`
	// CertFile is a TLS Certificate file
	CertFile string `yaml:"https_cert_file,omitempty"`
	// ProxyProtocol turns on support for HAProxy proxy protocol
	// this is the option that has be turned on only by administrator,
	// as only admin knows whether service is in front of trusted load balancer
	// or not.
	ProxyProtocol string `yaml:"proxy_protocol,omitempty"`
	// Kube configures kubernetes protocol support of the proxy
	Kube Kube `yaml:"kubernetes,omitempty"`

	// PublicAddr sets the hostport the proxy advertises for the HTTP endpoint.
	// The hosts in PublicAddr are included in the list of host principals
	// on the SSH certificate.
	PublicAddr utils.Strings `yaml:"public_addr,omitempty"`

	// SSHPublicAddr sets the hostport the proxy advertises for the SSH endpoint.
	// The hosts in PublicAddr are included in the list of host principals
	// on the SSH certificate.
	SSHPublicAddr utils.Strings `yaml:"ssh_public_addr,omitempty"`
}

Proxy is a `proxy_service` section of the config file:

type ReverseTunnel 

type ReverseTunnel struct {
	DomainName string   `yaml:"domain_name"`
	Addresses  []string `yaml:"addresses"`
}

ReverseTunnel is a SSH reverse tunnel maintained by one cluster's proxy to remote Teleport proxy

func (*ReverseTunnel) ConvertAndValidate 

func (t *ReverseTunnel) ConvertAndValidate() (services.ReverseTunnel, error)

ConvertAndValidate returns validated services.ReverseTunnel or nil and error otherwize

type SSH 

type SSH struct {
	Service               `yaml:",inline"`
	Namespace             string            `yaml:"namespace,omitempty"`
	Labels                map[string]string `yaml:"labels,omitempty"`
	Commands              []CommandLabel    `yaml:"commands,omitempty"`
	PermitUserEnvironment bool              `yaml:"permit_user_env,omitempty"`
	PAM                   *PAM              `yaml:"pam,omitempty"`
	// PublicAddr sets SSH host principals for SSH service
	PublicAddr utils.Strings `yaml:"public_addr,omitempty"`
}

SSH is 'ssh_service' section of the config file

type Service 

type Service struct {
	EnabledFlag   string `yaml:"enabled,omitempty"`
	ListenAddress string `yaml:"listen_addr,omitempty"`
}

Service is a common configuration of a teleport service

func (*Service) Configured 

func (s *Service) Configured() bool

Configured determines if a given "_service" section has been specified

func (*Service) Disabled 

func (s *Service) Disabled() bool

Disabled returns 'true' if the service has been deliberately turned off

func (*Service) Enabled 

func (s *Service) Enabled() bool

Enabled determines if a given "_service" section has been set to 'true'

type StaticToken 

type StaticToken string

func (StaticToken) Parse 

func (t StaticToken) Parse() (services.ProvisionToken, error)

Parse is applied to a string in "role,role,role:token" format. It breaks it apart and constructs a services.ProvisionToken which contains the token, role, and expiry (infinite).

type StaticTokens 

type StaticTokens []StaticToken

func (StaticTokens) Parse 

func (t StaticTokens) Parse() (services.StaticTokens, error)

type TrustedCluster 

type TrustedCluster struct {
	// KeyFile is a path to a remote authority (AKA "trusted cluster") public keys
	KeyFile string `yaml:"key_file,omitempty"`
	// AllowedLogins is a comma-separated list of user logins allowed from that cluster
	AllowedLogins string `yaml:"allow_logins,omitempty"`
	// TunnelAddr is a comma-separated list of reverse tunnel addresses to
	// connect to
	TunnelAddr string `yaml:"tunnel_addr,omitempty"`
}

TrustedCluster struct holds configuration values under "trusted_clusters" key

type U2F added in v1.3.0 

type U2F struct {
	AppID  string   `yaml:"app_id,omitempty"`
	Facets []string `yaml:"facets,omitempty"`
}

func (*U2F) Parse added in v1.3.0 

func (u *U2F) Parse() (*services.U2F, error)

Parse parses values in the U2F configuration section and validates its content.

type UniversalSecondFactor 

type UniversalSecondFactor struct {
	AppID  string   `yaml:"app_id"`
	Facets []string `yaml:"facets"`
}

func (*UniversalSecondFactor) Parse 

func (u *UniversalSecondFactor) Parse() services.U2F

type YAMLMap 

type YAMLMap map[interface{}]interface{}

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