Auth-Machine

Abstract

The oCIS Auth Machine is used for interservice communication when using user impersonation.

ocis uses serveral authentication services for different use cases. All services that start with auth- are part of the authentication service family. Each member authenticates requests with different scopes. As of now, these services exist:

auth-basic handles basic authentication
auth-bearer handles oidc authentication
auth-machine handles interservice authentication when a user is impersonated
auth-service handles interservice authentication when using service accounts

User Impersonation
Deprecation
Example Yaml Config

User Impersonation

When one ocis service is trying to talk to other ocis services, it needs to authenticate itself. To do so, it will impersonate a user using the auth-machine service. It will then act on behalf of this user. Any action will show up as action of this specific user, which gets visible when e.g. logged in the audit log.

Deprecation

With the upcoming auth-service service, the auth-machine service will be used less frequently and is probably a candidate for deprecation.

Example Yaml Config

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# Autogenerated
# Filename: auth-machine-config-example.yaml

tracing:
  enabled: false
  type: ""
  endpoint: ""
  collector: ""
log:
  level: ""
  pretty: false
  color: false
  file: ""
debug:
  addr: 127.0.0.1:9167
  token: ""
  pprof: false
  zpages: false
grpc:
  addr: 127.0.0.1:9166
  tls: null
  protocol: tcp
token_manager:
  jwt_secret: ""
reva:
  address: com.owncloud.api.gateway
  tls:
    mode: ""
    cacert: ""
skip_user_groups_in_token: false
machine_auth_api_key: ""

Environment Variables

Name	Type	Default Value	Description
OCIS_TRACING_ENABLED AUTH_MACHINE_TRACING_ENABLED	bool	false	Activates tracing.
OCIS_TRACING_TYPE AUTH_MACHINE_TRACING_TYPE	string		The type of tracing. Defaults to ‘’, which is the same as ‘jaeger’. Allowed tracing types are ‘jaeger’ and ’’ as of now.
OCIS_TRACING_ENDPOINT AUTH_MACHINE_TRACING_ENDPOINT	string		The endpoint of the tracing agent.
OCIS_TRACING_COLLECTOR AUTH_MACHINE_TRACING_COLLECTOR	string		The HTTP endpoint for sending spans directly to a collector, i.e. http://jaeger-collector:14268/api/traces. Only used if the tracing endpoint is unset.
OCIS_LOG_LEVEL AUTH_MACHINE_LOG_LEVEL	string		The log level. Valid values are: ‘panic’, ‘fatal’, ’error’, ‘warn’, ‘info’, ‘debug’, ’trace’.
OCIS_LOG_PRETTY AUTH_MACHINE_LOG_PRETTY	bool	false	Activates pretty log output.
OCIS_LOG_COLOR AUTH_MACHINE_LOG_COLOR	bool	false	Activates colorized log output.
OCIS_LOG_FILE AUTH_MACHINE_LOG_FILE	string		The path to the log file. Activates logging to this file if set.
AUTH_MACHINE_DEBUG_ADDR	string	127.0.0.1:9167	Bind address of the debug server, where metrics, health, config and debug endpoints will be exposed.
AUTH_MACHINE_DEBUG_TOKEN	string		Token to secure the metrics endpoint.
AUTH_MACHINE_DEBUG_PPROF	bool	false	Enables pprof, which can be used for profiling.
AUTH_MACHINE_DEBUG_ZPAGES	bool	false	Enables zpages, which can be used for collecting and viewing in-memory traces.
AUTH_MACHINE_GRPC_ADDR	string	127.0.0.1:9166	The bind address of the GRPC service.
AUTH_MACHINE_GRPC_PROTOCOL	string	tcp	The transport protocol of the GRPC service.
OCIS_JWT_SECRET AUTH_MACHINE_JWT_SECRET	string		The secret to mint and validate jwt tokens.
OCIS_REVA_GATEWAY	string	com.owncloud.api.gateway	The CS3 gateway endpoint.
OCIS_GRPC_CLIENT_TLS_MODE	string		TLS mode for grpc connection to the go-micro based grpc services. Possible values are ‘off’, ‘insecure’ and ‘on’. ‘off’: disables transport security for the clients. ‘insecure’ allows using transport security, but disables certificate verification (to be used with the autogenerated self-signed certificates). ‘on’ enables transport security, including server certificate verification.
OCIS_GRPC_CLIENT_TLS_CACERT	string		Path/File name for the root CA certificate (in PEM format) used to validate TLS server certificates of the go-micro based grpc services.
AUTH_MACHINE_SKIP_USER_GROUPS_IN_TOKEN	bool	false	Disables the encoding of the user’s group memberships in the reva access token. This reduces the token size, especially when users are members of a large number of groups.
OCIS_MACHINE_AUTH_API_KEY AUTH_MACHINE_API_KEY	string		Machine auth API key used to validate internal requests necessary for the access to resources from other services.