GNUNET.CONF(5)

NAME
gnunet.conf - GNUnet configuration file

DESCRIPTION
A GNUnet setup typically consists of a set of service processes run by a user "gnunet" and a set of user-interface processes run by a standard account. The default location for the configuration file for the services is ~gnunet/.config/gnunet.conf. However, as normal users also may need read-access to this configuration, you might want to instead put the service process configuration in /etc/gnunet.conf. gnunet-setup(1), part of gnunet-gtk, can be used to edit this configuration. The parts of GNUnet that are run as a normal user may have config options too and they read from $HOME/.config/gnunet.conf. The latter config file can skip any options for the services.

The basic structure of the configuration file is the following.
•   The file is split into sections.
•   Every section begins with a token in square brakets. The current section ends when a new section starts or end of file is encountered.
•   A section contains a number of options of the form "OPTION=VALUE".
•   Whitespace surrounding the "=" token is striped out, in other words "OPTION = VALUE" and "OPTION=VALUE" are treated equal.
•   Empty lines and lines beginning with a "#" are treated as comments.
•   Boolean values are given as "YES" and "NO".

Almost all options are optional. The tools resort to reasonable defaults if an option is not present. Default values for all of the options can be found in the files in the $GNUNET_PREFIX/share/gnunet/config.d/ directory. A typical setup will work out of the box with those. See the examples section below for some common setups on top of that.

  Variable naming conventions and data types
Boolean values for options are set via "YES" or "NO" values, without the double-quotes.

Options which include "PATH" or "path" define a path on the file-system and can take additional variables in the path, such as $GNUNET_TMP.

Section names as listed more in detail below, are small letters only enclosed by square brakets.

  GENERAL OPTIONS
Many options will be common between sections. They can be repeated under each section with different values. The "[PATHS]" section is special. Here, it is possible to specify values for variables like "GNUNET_HOME". Then, in all filenames that begin with "$GNUNET_HOME" the "$GNUNET_HOME" will be replaced with the respective value at runtime. The main use of this is to redefine "$GNUNET_HOME", which by default points to $HOME/.config/. By setting this variable, you can change the location where GNUnet stores its internal data. gnunet.conf accepts the variable GNUNET_TMP which we suggest to use in place of the absolute definition of /tmp. So instead of /tmp/foo you would write $GNUNET_TMP/foo. The usage of $GNUNET_TMP/foo, will result in $TMPDIR/gnunet/foo, or $TMP/gnunet/foo and finally, if TMPDIR is undefined, /tmp/gnunet/foo. The following options are generic and shared by all services:

HOSTNAME
    The hostname specifies the machine on which the service is running. This is usually "localhost".

BINARY
    The filename that implements the service. For example "gnunet-service-ats".

IMMEDIATE_START
    Start the service always when the peer starts. Set to YES for services that should always be launched, even if no other service explicitly needs them.

START_ON_DEMAND
    Set to YES to automatically start the service when it is requested by another service. YES for most GNUnet services.

NOARMBIND
    Set to YES to never have ARM bind to the respective socket. This option is mostly for debugging in situations where ARM cannot pass the pre-bound socket to the child due to interference from PREFIX-commands. This option is only effective in combination with IMMEDIATE_START being YES. NO by default.

PREFIX
    PREFIX the given command (with its arguments) to the actual BINARY to be executed. Useful to run certain services under special supervisors like strace, dtrace, or valgrind. Typically used in combination with IMMEDIATE_START and NOARMBIND. Empty by default.

ACCEPT_FROM
    A semi-column separated list of IPv4 addresses that are allowed to use the service; usually 127.0.0.1.

ACCEPT_FROM6
    A semi-column separated list of IPv6 addresses that are allowed to use the service; usually ::1.

UNIXPATH
    Path to use for the UNIX domain socket for inter process communication with the service on POSIX systems.

UNIX_MATCH_UID
    If UNIX domain sockets are used, set this to YES if only users with the same UID are allowed to access the service.

UNIX_MATCH_GID
    If UNIX domain sockets are used, set this to YES if only users with the same GID are allowed to access the service.

RUN_PER_USER
    End-users should never have to change the defaults GNUnet provides for this option.

    YES Set to YES if this service should be run per-user.

    NO  Set to NO if this is a system service.
In the following sections the absence of a default value is either expressed as "Default value:" followed by nothing, or the lack of this line.

  ARM

PORT
    Default value: 2087

HOSTNAME
    Default value: localhost

BINARY
    Default value: gnunet-service-arm

ACCEPT_FROM
    Default value: 127.0.0.1;

ACCEPT_FROM6
    Default value: ::1;

UNIXPATH
    Special case, uses user runtime dir even for per-system service.

    Default value: $GNUNET_USER_RUNTIME_DIR/gnunet-service-arm.sock

UNIX_MATCH_UID
    Default value: YES

UNIX_MATCH_GID
    Default value: YES

GLOBAL_POSTFIX
    In the -l option, format characters from strftime(3) are allowed; In the GLOBAL_POSTFIX, "{}" stands for the name of the respective service. Thus the following example for this option would introduce per-service logging with a new log file each day. Note that only the last 3 log files are preserved. Example:

    -l $GNUNET_CACHE_HOME/{}-%Y-%m-%d.log

    Default value:

GLOBAL_PREFIX
    Default value:

START_SYSTEM_SERVICES
    If set to YES, ARM will only start services that are marked as system-level services (and we'll expect a second ARM to be run per-user to run user-level services). Note that in this case you must have manually created a different configuration file with the user where at least this and the START_USER_SERVICES options differ.

START_USER_SERVICES
    If set to YES, ARM will only start services that are marked as per-user services (and we'll expect a system user to run ARM to provide system-level services). Per-user services enable better personalization and privilege separation and in particular ensures that personal data is stored under $HOME, which might be important in a multi-user system (or if $HOME is encrypted and /var/ is not).

    Note that if you have different ARM services for SYSTEM and USER, and you are not on UNIX, you need to change the PORT option for the USER ARM instances to some free port (counting down from 2085 should provide free ports).

RESOURCE_DIAGNOSTICS
    File where we should log per-service resource consumption on exit.

    Default value: resource.log

USERNAME
    Name of the user that will be used to provide the service.

    Default value:

MAXBUF
    Default value:

TIMEOUT
    Default value:

DISABLEV6
    Default value:

BINDTO
    Default value:

REJECT_FROM
    Default value:

REJECT_FROM6
    Default value:

PREFIX
    Default value:

  ATS

PORT
    Default value: 2098

HOSTNAME
    Default value: localhost

BINARY
    Default value: gnunet-service-ats

ACCEPT_FROM
    Default value: 127.0.0.1;

ACCEPT_FROM6
    Default value: ::1;

UNIXPATH
    Default value: $GNUNET_RUNTIME_DIR/gnunet-service-ats.sock

UNIX_MATCH_UID
    Default value: NO

UNIX_MATCH_GID
    Default value: YES

MODE
    Designated assignment mode. Possible values: PROPORTIONAL, MLP, RIL.

    Default value: proportional

UNSPECIFIED_QUOTA_IN
    quotes in KiB or MiB per seconds. Or use the word "unlimited". Default value: 64 KiB

UNSPECIFIED_QUOTA_OUT
    quotes in KiB or MiB per seconds. Or use the word "unlimited". Default value: 64 KiB

LOOPBACK_QUOTA_IN
    quotes in KiB or MiB per seconds. Or use the word "unlimited". Default value: unlimited

LOOPBACK_QUOTA_OUT
    quotes in KiB or MiB per seconds. Or use the word "unlimited". Default value: unlimited

LAN_QUOTA_IN
    quotes in KiB or MiB per seconds. Or use the word "unlimited". Default value: unlimited

LAN_QUOTA_OUT
    quotes in KiB or MiB per seconds. Or use the word "unlimited". Default value: unlimited

WAN_QUOTA_IN
    quotes in KiB or MiB per seconds. Or use the word "unlimited". Default value: 64 KiB

WAN_QUOTA_OUT
    quotes in KiB or MiB per seconds. Or use the word "unlimited". Default value: 64 KiB

WLAN_QUOTA_IN
    quotes in KiB or MiB per seconds. Or use the word "unlimited". Default value: 1 MiB

WLAN_QUOTA_OUT
    quotes in KiB or MiB per seconds. Or use the word "unlimited". Default value: 1 MiB

BLUETOOTH_QUOTA_IN
    Default value: 128 KiB

BLUETOOTH_QUOTA_OUT
    Default value: 128 KiB

PROP_PROPORTIONALITY_FACTOR
    How proportional to preferences is bandwidth distribution in a network? Default value: 2.00

    1.0 Fair with respect to addresses without preferences.

    > 1.0
        The bigger, the more respect is paid to preferences.

PROP_STABILITY_FACTOR
    Should we stick to existing connections are prefer to switch? [1.0...2.0], lower value prefers to switch, bigger value is more tolerant.

    Default value: 1.25

MLP_MAX_DURATION
    Maximum duration for a solution process (both LP and MILP). Default value: 3 s

MLP_MAX_ITERATIONS
    Maximum numbero of iterations for a solution process (only LP). Tolerated MIP Gap [0.0 .. 1.0].

    Default value: 0.025

MLP_MAX_MIP_GAP
    Tolerated LP/MIP Gap [0.0 .. 1.0].

    Default value: 0.025

MLP_MAX_LP_MIP_GAP
    Default value: 0.025

MLP_MAX_ITERATIONS
    Maximum number of iterations for a solution process.

    Default value: 1024

MLP_COEFFICIENT_D
    Default value: 1.0

MLP_COEFFICIENT_U
    Default value: 1.0

MLP_COEFFICIENT_R
    Default value: 1.0

MLP_MIN_BANDWIDTH
    Default value: 1024

MLP_MIN_CONNECTIONS
    Default value: 4

MLP_DUMP_PROBLEM_ALL
    Dump all problems to disk.

    Default value: YES

MLP_DUMP_SOLUTION_ALL
    Dump all solution to disk.

    Default value: YES

MLP_GLPK_VERBOSE
    Print GLPK output.

    Default value: YES

MLP_DUMP_PROBLEM_ON_FAIL
    Dump all problems to disk.

    Default value: YES

MLP_DUMP_SOLUTION_ON_FAIL
    Dump all solution to disk.

    Default value: YES

RIL_STEP_TIME_MIN
    Default value: 500 ms

RIL_STEP_TIME_MAX
    Default value: 1000 ms

RIL_ALGORITHM
    Possible values: SARSA or Q-LEARNING.

    Default value: Q-LEARNING

RIL_DISCOUNT_BETA
    Default value: 0.7

RIL_GRADIENT_STEP_SIZE
    Default value: 0.3

RIL_TRACE_DECAY
    Default value: 0.2

RIL_EXPLORE_RATIO
    Default value: 0.1

RIL_GLOBAL_REWARD_SHARE
    Default value: 1

  AUCTION

  CADET

IMMEDIATE_START
    Default value: YES

START_ON_DEMAND
    Default value: YES

PORT
    Default value: 2096

HOSTNAME
    Default value: localhost

BINARY
    Default value: gnunet-service-cadet

PREFIX

ACCEPT_FROM
    Default value: 127.0.0.1;

ACCEPT_FROM6
    Default value: ::1;

UNIXPATH
    Default value: $GNUNET_RUNTIME_DIR/gnunet-service-cadet.sock

UNIX_MATCH_UID
    Default value: NO

UNIX_MATCH_GID
    Default value: YES

REFRESH_CONNECTION_TIME
    How often do we send KEEPALIVE messages on connections to keep them from timing out?

    Default value: 5 min

DROP_PERCENT
    Percentage of packets CADET is artificially dropping. Used for testing only!

ID_ANNOUNCE_TIME
    How frequently do we usually announce our presence in the DHT?

    Default value: 1 h

CONNECT_TIMEOUT
    Default value: 30 s

DHT_REPLICATION_LEVEL
    What is the replication level we give to the DHT when announcing our existence? Usually there is no need to change this.

    Default value: 3

MAX_TUNNELS
    Not implemented

    Default value: 1000

MAX_CONNECTIONS
    Not implemented, replaced by MAX_ROUTES in NEW CADET!

    Default value: 1000

MAX_ROUTES
    How many routes do we participate in at most? Should be smaller than MAX_MSGS_QUEUE.

    Default value: 5000

MAX_MSGS_QUEUE
    Not implemented

    Default value: 10000

MAX_PEERS
    Not implemented

    Default value: 1000

RATCHET_TIME
    How often do we advance the ratchet even if there is not any traffic?

    Default value: 1 h

RATCHET_MESSAGES
    How often do we advance the ratched if there is traffic?

    Default value: 64

  COMMUNICATOR-UNIX

UNIXPATH
    Default value: $GNUNET_RUNTIME_DIR/gnunet-communicator-unix.sock

  CONSENSUS

START_ON_DEMAND
    Default value: YES

PORT
    Default value: 2103

HOSTNAME
    Default value: localhost

BINARY
    Default value: gnunet-service-consensus

ACCEPT_FROM
    Default value: 127.0.0.1;

ACCEPT_FROM6
    Default value: ::1;

UNIXPATH
    Default value: $GNUNET_RUNTIME_DIR/gnunet-service-consensus.sock

UNIX_MATCH_UID
    Default value: YES

UNIX_MATCH_GID
    Default value: YES

  CORE

START_ON_DEMAND
    Default value: YES

PORT
    Default value: 2092

HOSTNAME
    Default value: localhost

BINARY
    Default value: gnunet-service-core

ACCEPT_FROM
    Default value: 127.0.0.1;

ACCEPT_FROM6
    Default value: ::1;

UNIXPATH
    Default value: $GNUNET_RUNTIME_DIR/gnunet-service-core.sock

UNIX_MATCH_UID
    Default value: NO

UNIX_MATCH_GID
    Default value: YES

DISABLE_SOCKET_FORWARDING
    Default value: NO

USERNAME

MAXBUF

TIMEOUT

DISABLEV6

BINDTO

REJECT_FROM

REJECT_FROM6

PREFIX

USE_EPHEMERAL_KEYS
    Default value: YES

    This MUST be set to YES in production, only set to NO for testing for performance (testbed/cluster-scale use!).

  DATACACHE-POSTGRES

CONFIG
    Default value: postgres:///gnunet

  DATASTORE

START_ON_DEMAND
    Default value: YES

UNIXPATH
    Default value: $GNUNET_RUNTIME_DIR/gnunet-service-datastore.sock

UNIX_MATCH_UID
    Default value: NO

UNIX_MATCH_GID
    Default value: YES

PORT
    Default value: 2093

HOSTNAME
    Default value: localhost

BINARY
    Default value: gnunet-service-datastore

ACCEPT_FROM
    Default value: 127.0.0.1;

ACCEPT_FROM6
    Default value: ::1;

QUOTA
    Default value: 5 GB

BLOOMFILTER
    Default value: $GNUNET_DATA_HOME/datastore/bloomfilter

DATABASE
    Default value: sqlite

DISABLE_SOCKET_FORWARDING
    Default value: NO

  DATASTORE-SQLITE

FILENAME
    Default value: $GNUNET_DATA_HOME/datastore/sqlite.db

  DATASTORE-POSTGRES

CONFIG
    Default value: postgres:///gnunet

  DATASTORE-MYSQL

DATABASE
    Default value: gnunet

CONFIG
    Default value: ~/.my.cnf

USER
    Default value: gnunet

PASSWORD

HOST
    Default value: localhost

PORT
    Default value: 3306

  DATASTORE-HEAP

HASHMAPSIZE
    Default value: 1024

  DHT

IMMEDIATE_START boolean
    Default value: YES

START_ON_DEMAND boolean
    Default value: YES

PORT integer
    Default value: 2095

HOSTNAME string
    Default value: localhost

BINARY string
    Default value: gnunet-service-dht

ACCEPT_FROM string
    Default value: 127.0.0.1;

ACCEPT_FROM6 string
    Default value: ::1;

BUCKET_SIZE integer
    Default value: 4

UNIXPATH path
    Default value: $GNUNET_RUNTIME_DIR/gnunet-service-dht.sock

UNIX_MATCH_UID boolean
    Default value: NO

UNIX_MATCH_GID boolean
    Default value: YES

DISABLE_SOCKET_FORWARDING boolean
    Default value: NO

USERNAME =

MAXBUF =

TIMEOUT =

DISABLEV6 =

BINDTO =

REJECT_FROM =

REJECT_FROM6 =

PREFIX =

    # Should the DHT cache results that we are routing in the DATACACHE as well? CACHE_RESULTS = YES

    # Special option to disable DHT calling 'try_connect' (for testing) DISABLE_TRY_CONNECT = NO

  DHTCACHE

DATABASE
    Default value: heap

QUOTA
    Default value: 50 MB

DISABLE_BF_RC boolean
    Disable RC-file for Bloom filter? (for benchmarking with limited IO availability)

    Default value: NO

  EXIT

  FS

  GNS

  HOSTLIST

  IDENTITY

  NAMECACHE

  NAMESTORE

  NAT-AUTO

  NAT

  NSE

  PEERINFO

  PEERSTORE

  PT

  REGEX

  RESOLVER

  REST

UNIXPATH
    Default value: $GNUNET_USER_RUNTIME_DIR/gnunet-service-rest.sock

BINARY
    Default value: gnunet-rest-server

BIND_TO
    Default value: 127.0.0.1

BIND_TO6
    Default value: ::1

REST_PORT
    Default value: 7776

REST_ALLOW_HEADERS
    Default value: Authorization,Accept,Content-Type

REST_ALLOW_ORIGIN
    Default value: *

REST_ALLOW_CREDENTIALS
    Default value: true

  REVOCATION

  SCALARPRODUCT

  SECRETSHARING

  SET

  STATISTICS

  TEMPLATE

  TESTBED-LOGGER

  TESTBED

  TESTING

  TOPOLOGY

IMMEDIATE_START
    Default value: YES

NOARMBIND
    Default value: YES

MINIMUM-FRIENDS
    Default value: 0

FRIENDS-ONLY
    Default value: NO

TARGET-CONNECTION-COUNT
    Default value: 16

FRIENDS
    Default value: $GNUNET_CONFIG_HOME/topology/friends.txt

BINARY
    Default value: gnunet-daemon-topology

  TRANSPORT

  UTIL

  VPN

START_ON_DEMAND
    Default value: YES

PORT
    Default value: 2105

HOSTNAME
    Default value: localhost

BINARY
    Default value: gnunet-service-vpn

ACCEPT_FROM
    Default value: 127.0.0.1;

ACCEPT_FROM6
    Default value: ::1;

UNIXPATH
    Default value: $GNUNET_RUNTIME_DIR/gnunet-service-vpn.sock

UNIX_MATCH_UID
    Default value: NO

UNIX_MATCH_GID
    Default value: YES

IPV6ADDR
    Default value: 1234::1

IPV6PREFIX
    Default value: 32

IPV4ADDR
    Default value: 10.11.10.1

IPV4MASK
    Default value: 255.255.0.0

VIRTDNS
    Default value: 10.11.10.2

VIRTDNS6
    Default value: 1234::17

IFNAME
    Default value: vpn-gnunet

  ZONEMASTER

START_ON_DEMAND
    Default value: YES

IMMEDIATE_START
    Default value: YES

HOSTNAME
    Default value: localhost

BINARY
    Default value: gnunet-service-zonemaster

UNIXPATH
    Default value: $GNUNET_USER_RUNTIME_DIR/gnunet-service-zonemaster.sock

PORT
    Default value: 2123

UNIX_MATCH_UID
    Do we require users that want to access GNS to run this process (usually not a good idea)?

    Default value: NO

UNIX_MATCH_GID
    Do we require users that want to access GNS to be in the 'gnunet' group?

    Default value: NO

MAX_PARALLEL_BACKGROUND_QUERIES
    How many queries is GNS allowed to perform in the background at the same time?

    Default value: 1000

ZONE_PUBLISH_TIME_WINDOW
    How frequently do we try to publish our full zone?

    Default value: 4 h

USE_CACHE
    Using caching or always ask DHT?

    Default value: YES

PREFIX

  ZONEMASTER-MONITOR

START_ON_DEMAND
    Default value: YES

IMMEDIATE_START
    Default value: YES

HOSTNAME
    Default value: localhost

BINARY
    Default value: gnunet-service-zonemaster-monitor

UNIXPATH
    Default value: $GNUNET_USER_RUNTIME_DIR/gnunet-service-zonemaster-monitor.sock

PORT
    Default value: 2124

UNIX_MATCH_UID
    Do we require users that want to access GNS to run this process (usually not a good idea)?

    Default value: NO

UNIX_MATCH_GID
    Do we require users that want to access GNS to be in the 'gnunet' group?

    Default value: NO

EXAMPLES
This example is a simple way to get started, using a server that has a known list of peers to get you started. Most users will be behind a firewall on IPv4, as such NAT is enabled. Please remember to change your IP address to the actual external address for your usage.
    [hostlist]
    OPTIONS = -b -e

    [nat]
    BEHIND_NAT = YES
    ENABLE_UPNP = YES
    DISABLEV6 = YES
    EXTERNAL_ADDRESS = 157.166.249.10

    [arm]
    START_SYSTEM_SERVICES = YES
    START_USER_SERVICES = NO

FILES
~gnunet/.config/gnunet.conf GNUnet system-user configuration file $HOME/.config/gnunet.conf User specific GNUnet configuration file /etc/gnunet.conf Systemwide GNUnet configuration file $GNUNET_PREFIX/share/gnunet/config.d/ GNUnet configuration directory with all default option values

SEE ALSO
env(1), gnunet-arm(1), gnunet-setup(1), strftime(3).

The full documentation for gnunet is maintained as a Texinfo manual. If the info(1) and gnunet programs are properly installed at your site, the command

    info gnunet

should give you access to the complete handbook,

    info gnunet-c-tutorial

will give you access to a tutorial for developers.

Depending on your installation, this information is also available in gnunet(7) and gnunet-c-tutorial(7).

BUGS
Report bugs by using https://bugs.gnunet.org or by sending electronic mail to <gnunet-developers@gnu.org>.