%% -*- mode: erlang;erlang-indent-level: 4;indent-tabs-mode: nil -*-
%% ex: ft=erlang ts=4 sw=4 et
[
%% Riak Client APIs config
{riak_api, [
%% pb_backlog is the maximum length to which the queue of pending
%% connections may grow. If set, it must be an integer >= 0.
%% By default the value is 5. If you anticipate a huge number of
%% connections being initialised *simultaneously*, set this number
%% higher.
%% {pb_backlog, 64},
%% pb_ip is the IP address that the Riak Protocol Buffers interface
%% will bind to. If this is undefined, the interface will not run.
{pb_ip, "127.0.0.1" },
%% pb_port is the TCP port that the Riak Protocol Buffers interface
%% will bind to
{pb_port, 8087 }
]},
%% Riak Core config
{riak_core, [
%% Default location of ringstate
{ring_state_dir, "/var/lib/riak/ring"},
%% Default ring creation size. Make sure it is a power of 2,
%% e.g. 16, 32, 64, 128, 256, 512 etc
%{ring_creation_size, 64},
%% http is a list of IP addresses and TCP ports that the Riak
%% HTTP interface will bind.
{http, [ {"127.0.0.1", 8098 } ]},
%% https is a list of IP addresses and TCP ports that the Riak
%% HTTPS interface will bind.
%{https, [{ "127.0.0.1", 8098 }]},
%% Default cert and key locations for https can be overridden
%% with the ssl config variable, for example:
%{ssl, [
% {certfile, "/etc/riak/cert.pem"},
% {keyfile, "/etc/riak/key.pem"}
% ]},
%% riak_handoff_port is the TCP port that Riak uses for
%% intra-cluster data handoff.
{handoff_port, 8099 },
%% To encrypt riak_core intra-cluster data handoff traffic,
%% uncomment the following line and edit its path to an
%% appropriate certfile and keyfile. (This example uses a
%% single file with both items concatenated together.)
%{handoff_ssl_options, [{certfile, "/tmp/erlserver.pem"}]},
%% DTrace support
%% Do not enable 'dtrace_support' unless your Erlang/OTP
%% runtime is compiled to support DTrace. DTrace is
%% available in R15B01 (supported by the Erlang/OTP
%% official source package) and in R14B04 via a custom
%% source repository & branch.
{dtrace_support, false},
%% Health Checks
%% If disabled, health checks registered by an application will
%% be ignored. NOTE: this option cannot be changed at runtime.
%% To re-enable, the setting must be changed and the node restarted.
{enable_health_checks, true},
%% Platform-specific installation paths (substituted by rebar)
{platform_bin_dir, "/usr/bin"},
{platform_data_dir, "/var/lib/riak"},
{platform_etc_dir, "/etc/riak"},
{platform_lib_dir, "/usr/lib/riak"},
{platform_log_dir, "/var/log/riak"}
]},
%% Riak KV config
{riak_kv, [
%% Storage_backend specifies the Erlang module defining the storage
%% mechanism that will be used on this node.
{storage_backend, riak_kv_bitcask_backend},
%% raw_name is the first part of all URLS used by the Riak raw HTTP
%% interface. See riak_web.erl and raw_http_resource.erl for
%% details.
%{raw_name, "riak"},
%% Enable active anti-entropy subsystem + optional debug messages:
%% {anti_entropy, {on|off, []}},
%% {anti_entropy, {on|off, [debug]}},
{anti_entropy, {on, []}},
%% Restrict how fast AAE can build hash trees. Building the tree
%% for a given partition requires a full scan over that partition's
%% data. Once built, trees stay built until they are expired.
%% Config is of the form:
%% {num-builds, per-timespan-in-milliseconds}
%% Default is 1 build per hour.
{anti_entropy_build_limit, {1, 3600000}},
%% Determine how often hash trees are expired after being built.
%% Periodically expiring a hash tree ensures the on-disk hash tree
%% data stays consistent with the actual k/v backend data. It also
%% helps Riak identify silent disk failures and bit rot. However,
%% expiration is not needed for normal AAE operation and should be
%% infrequent for performance reasons. The time is specified in
%% milliseconds. The default is 1 week.
{anti_entropy_expire, 604800000},
%% Limit how many AAE exchanges/builds can happen concurrently.
{anti_entropy_concurrency, 2},
%% The tick determines how often the AAE manager looks for work
%% to do (building/expiring trees, triggering exchanges, etc).
%% The default is every 15 seconds. Lowering this value will
%% speedup the rate that all replicas are synced across the cluster.
%% Increasing the value is not recommended.
{anti_entropy_tick, 15000},
%% The directory where AAE hash trees are stored.
{anti_entropy_data_dir, "/var/lib/riak/anti_entropy"},
%% The LevelDB options used by AAE to generate the LevelDB-backed
%% on-disk hashtrees.
{anti_entropy_leveldb_opts, [{write_buffer_size, 4194304},
{max_open_files, 20}]},
%% mapred_name is URL used to submit map/reduce requests to Riak.
{mapred_name, "mapred"},
%% mapred_2i_pipe indicates whether secondary-index
%% MapReduce inputs are queued in parallel via their own
%% pipe ('true'), or serially via a helper process
%% ('false' or undefined). Set to 'false' or leave
%% undefined during a rolling upgrade from 1.0.
{mapred_2i_pipe, true},
%% Each of the following entries control how many Javascript
%% virtual machines are available for executing map, reduce,
%% pre- and post-commit hook functions.
{map_js_vm_count, 8 },
{reduce_js_vm_count, 6 },
{hook_js_vm_count, 2 },
%% js_max_vm_mem is the maximum amount of memory, in megabytes,
%% allocated to the Javascript VMs. If unset, the default is
%% 8MB.
{js_max_vm_mem, 8},
%% js_thread_stack is the maximum amount of thread stack, in megabyes,
%% allocate to the Javascript VMs. If unset, the default is 16MB.
%% NOTE: This is not the same as the C thread stack.
{js_thread_stack, 16},
%% js_source_dir should point to a directory containing Javascript
%% source files which will be loaded by Riak when it initializes
%% Javascript VMs.
%{js_source_dir, "/tmp/js_source"},
%% http_url_encoding determines how Riak treats URL encoded
%% buckets, keys, and links over the REST API. When set to 'on'
%% Riak always decodes encoded values sent as URLs and Headers.
%% Otherwise, Riak defaults to compatibility mode where links
%% are decoded, but buckets and keys are not. The compatibility
%% mode will be removed in a future release.
{http_url_encoding, on},
%% Switch to vnode-based vclocks rather than client ids. This
%% significantly reduces the number of vclock entries.
%% Only set true if *all* nodes in the cluster are upgraded to 1.0
{vnode_vclocks, true},
%% This option toggles compatibility of keylisting with 1.0
%% and earlier versions. Once a rolling upgrade to a version
%% > 1.0 is completed for a cluster, this should be set to
%% true for better control of memory usage during key listing
%% operations
{listkeys_backpressure, true},
%% This option configures the riak_kv health check that monitors
%% message queue lengths of riak_kv vnodes. The value is a 2-tuple,
%% {EnableThreshold, DisableThreshold}. If a riak_kv_vnode's message
%% queue length reaches DisableThreshold the riak_kv service is disabled
%% on this node. The service will not be re-enabled until the message queue
%% length drops below EnableThreshold.
{vnode_mailbox_limit, {1, 5000}}
]},
%% Riak Search Config
{riak_search, [
%% To enable Search functionality set this 'true'.
{enabled, false}
]},
%% Merge Index Config
{merge_index, [
%% The root dir to store search merge_index data
{data_root, "/var/lib/riak/merge_index"},
%% Size, in bytes, of the in-memory buffer. When this
%% threshold has been reached the data is transformed
%% into a segment file which resides on disk.
{buffer_rollover_size, 1048576},
%% Overtime the segment files need to be compacted.
%% This is the maximum number of segments that will be
%% compacted at once. A lower value will lead to
%% quicker but more frequent compactions.
{max_compact_segments, 20}
]},
%% Bitcask Config
{bitcask, [
%% Configure how Bitcask writes data to disk.
%% erlang: Erlang's built-in file API
%% nif: Direct calls to the POSIX C API
%%
%% The NIF mode provides higher throughput for certain
%% workloads, but has the potential to negatively impact
%% the Erlang VM, leading to higher worst-case latencies
%% and possible throughput collapse.
{io_mode, erlang},
{data_root, "/var/lib/riak/bitcask"}
]},
%% eLevelDB Config
{eleveldb, [
{data_root, "/var/lib/riak/leveldb"}
]},
%% Lager Config
{lager, [
%% What handlers to install with what arguments
%% The defaults for the logfiles are to rotate the files when
%% they reach 10Mb or at midnight, whichever comes first, and keep
%% the last 5 rotations. See the lager README for a description of
%% the time rotation format:
%% https://github.com/basho/lager/blob/master/README.org
%%
%% If you wish to disable rotation, you can either set the size to 0
%% and the rotation time to "", or instead specify a 2-tuple that only
%% consists of {Logfile, Level}.
%%
{handlers, [ {lager_file_backend, [ {"/var/log/riak/error.log", error, 10485760, "", 5}, {"/var/log/riak/console.log", info, 10485760, "", 5} ]} ] },
%% Whether to write a crash log, and where.
%% Commented/omitted/undefined means no crash logger.
{crash_log, "/var/log/riak/crash.log"},
%% Maximum size in bytes of events in the crash log - defaults to 65536
{crash_log_msg_size, 65536},
%% Maximum size of the crash log in bytes, before its rotated, set
%% to 0 to disable rotation - default is 0
{crash_log_size, 10485760},
%% What time to rotate the crash log - default is no time
%% rotation. See the lager README for a description of this format:
%% https://github.com/basho/lager/blob/master/README.org
{crash_log_date, "$D0"},
%% Number of rotated crash logs to keep, 0 means keep only the
%% current one - default is 0
{crash_log_count, 5},
%% Whether to redirect error_logger messages into lager - defaults to true
{error_logger_redirect, true}
]},
%% riak_sysmon config
{riak_sysmon, [
%% To disable forwarding events of a particular type, use a
%% limit of 0.
{process_limit, 30},
{port_limit, 2},
%% Finding reasonable limits for a given workload is a matter
%% of experimentation.
%% NOTE: Enabling the 'gc_ms_limit' monitor (by setting non-zero)
%% can cause performance problems on multi-CPU systems.
{gc_ms_limit, 0},
{heap_word_limit, 40111000},
%% Configure the following items to 'false' to disable logging
%% of that event type.
{busy_port, true},
{busy_dist_port, true}
]},
%% SASL config
{sasl, [
{sasl_error_logger, false}
]},
%% riak_control config
{riak_control, [
%% Set to false to disable the admin panel.
{enabled, false},
%% Authentication style used for access to the admin
%% panel. Valid styles are 'userlist' <TODO>.
{auth, userlist},
%% If auth is set to 'userlist' then this is the
%% list of usernames and passwords for access to the
%% admin panel.
{userlist, [{"user", "pass"}
]},
%% The admin panel is broken up into multiple
%% components, each of which is enabled or disabled
%% by one of these settings.
{admin, true}
]}
].
