See also the official documentation for this topic.

The default location of the default.ini file is in /usr/local/etc/couchdb. It is the local configuration file for the CouchDB server. Please note that upgrading CouchDB will overwrite default.ini, so it is a good idea to make changes to local.ini (or to use your own INI file for each CouchDB instance running).

The local configuration can also be restfully accessed via the /_config URI.

The default configuration file is shown, with each option described in detail.

; etc/couchdb/default.ini.tpl.  Generated from by configure.

; Upgrading CouchDB will overwrite this file.

database_dir = /usr/local/var/lib/couchdb
view_index_dir = /usr/local/var/lib/couchdb
util_driver_dir = /usr/local/lib/couchdb/erlang/lib/couch-0.10.0/priv/lib
max_document_size = 4294967296 ; 4 GB
max_attachment_chunk_size = 4294967296 ; 4GB
os_process_timeout = 5000 ; 5 seconds. for view and external servers.
max_dbs_open = 100
delayed_commits = true
batch_save_size = 1000 ; number of docs at which to save a batch
batch_save_interval = 1000 ; milliseconds after which to save batches

port = 5984
bind_address =
authentication_handlers = {couch_httpd_oauth, oauth_authentication_handler}, {couch_httpd_auth, default_authentication_handler}
default_handler = {couch_httpd_db, handle_request}
WWW-Authenticate = Basic realm="administrator"

file = /usr/local/var/log/couchdb/couch.log
level = info

authentication_db = users
secret = replace this with a real secret in your local.ini file
require_valid_user = false

javascript = /usr/local/bin/couchjs /usr/local/share/couchdb/server/main.js

; Changing reduce_limit to false will disable reduce_limit.
; If you think you're hitting reduce_limit with a "good" reduce function,
; please let us know on the mailing list so we can fine tune the heuristic.
reduce_limit = true

; enable external as an httpd handler, then link it with commands here.
; note, this api is still under consideration.
; [external]
; mykey = /path/to/mycommand

view_manager={couch_view, start_link, []}
external_manager={couch_external_manager, start_link, []}
db_update_notifier={couch_db_update_notifier_sup, start_link, []}
batch_save={couch_batch_save_sup, start_link, []}
query_servers={couch_query_servers, start_link, []}
httpd={couch_httpd, start_link, []}
stats_aggregator={couch_stats_aggregator, start, []}
stats_collector={couch_stats_collector, start, []}

/ = {couch_httpd_misc_handlers, handle_welcome_req, <<"Welcome">>}
favicon.ico = {couch_httpd_misc_handlers, handle_favicon_req, "/usr/local/share/couchdb/www"}

_utils = {couch_httpd_misc_handlers, handle_utils_dir_req, "/usr/local/share/couchdb/www"}
_all_dbs = {couch_httpd_misc_handlers, handle_all_dbs_req}
_active_tasks = {couch_httpd_misc_handlers, handle_task_status_req}
_config = {couch_httpd_misc_handlers, handle_config_req}
_replicate = {couch_httpd_misc_handlers, handle_replicate_req}
_uuids = {couch_httpd_misc_handlers, handle_uuids_req}
_restart = {couch_httpd_misc_handlers, handle_restart_req}
_stats = {couch_httpd_stats_handlers, handle_stats_req}
_log = {couch_httpd_misc_handlers, handle_log_req}
_sleep = {couch_httpd_misc_handlers, handle_sleep_req}
_session = {couch_httpd_auth, handle_session_req}
_oauth = {couch_httpd_oauth, handle_oauth_req}
_user = {couch_httpd_auth, handle_user_req}

_view_cleanup = {couch_httpd_db, handle_view_cleanup_req}
_compact = {couch_httpd_db, handle_compact_req}
_design = {couch_httpd_db, handle_design_req}
_view = {couch_httpd_view, handle_db_view_req}
_temp_view = {couch_httpd_view, handle_temp_view_req}
_changes = {couch_httpd_db, handle_changes_req}

; The external module takes an optional argument allowing you to narrow it to a
; single script. Otherwise the script name is inferred from the first path section
; after _external's own path.
; _mypath = {couch_httpd_external, handle_external_req, <<"mykey">>}
; _external = {couch_httpd_external, handle_external_req}

_view = {couch_httpd_view, handle_view_req}
_show = {couch_httpd_show, handle_doc_show_req}
_list = {couch_httpd_show, handle_view_list_req}
_info = {couch_httpd_db,   handle_design_info_req}
_update = {couch_httpd_show, handle_doc_update_req}