Description

Installs and configures CouchDB. Optionally can install CouchDB from sources.

Requirements

Requires a platform that can install Erlang from distribution packages.

Platform

Originally tested on Debian 5+, Ubuntu 8.10+, OpenBSD and FreeBSD.

Also works on Red Hat, CentOS and Fedora, requires the EPEL yum repository.

Tested via Test Kitchen (1.0-alpha):

• Ubuntu 10.04, 12.04
• CentOS 5.8, 6.3

Cookbooks

• erlang

When using the couchdb::source recipe, the build-essential recipe is required. It is not a direct dependency of this cookbook as it is an optional installation method, and package installation is recommended.

Attributes

Cookbook attributes are named under the couch_db keyspace.

• node['couch_db']['src_checksum'] - sha256sum of the default version of couchdb to download
• node['couch_db']['src_version'] - default version of couchdb to download, used in the full URL to download.
• node['couch_db']['src_mirror'] - full URL to download.
• node['couch_db']['install_erlang'] - specify if erlang should be installed prior to couchdb, true by default.

Configuration

The local.ini file is dynamically generated from attributes. Each key in node['couch_db']['config'] is a CouchDB configuration directive, and will be rendered in the config file. For example, the attribute:

node['couch_db']['config']['httpd']['bind_address'] = "0.0.0.0"

Will result in the following lines in the local.ini file:

[httpd]
bind_address = "0.0.0.0"

The attributes file contains default values for platform-independent parameters. All parameter values that expect a path argument are not set by default. The default values that are currently set have been taken from the CouchDB configuration wiki page.

The resulting configuration file is now dynamically rendered from the attributes. Each subkey below the config key is a specific section of the local.ini file. Then each subkey in a section is a parameter associated with a value.

You should consult the CouchDB documentation for specific configuration details.

For values that are "on" or "off", they should be specified as literal true or false. Any configuration option set to the literal nil will be skipped entirely. All other values (e.g., string, numeric literals) will be used as is. So for example:

node.default['couch_db']['config']['couchdb']['os_process_timeout'] = 5000
node.default['couch_db']['config']['couchdb']['delayed_commits'] = true
node.default['couch_db']['config']['couchdb']['batch_save_interval'] = nil
node.default['couch_db']['config']['httpd']['port'] = 5984
node.default['couch_db']['config']['httpd']['bind_address'] = "127.0.0.1"

Will result in the following config lines:

[couchdb]
os_process_timeout = 5000
delayed_commits = true

[httpd]
port = 5984
bind_address = 127.0.0.1

(no line printed for batch_save_interval as it is nil)

Defaults

Here the list of attributes that are already provided by the recipe and their associated default value.

Section [couchdb]

• node['couch_db']['config]['couchdb']['max_document_size'] - Maximum size of a document in bytes, defaults to 4294967296 (4 GB).
• node['couch_db']['config]['couchdb']['max_attachment_chunk_size'] - Maximum chunk size of an attachment in bytes, defaults to 4294967296 (4 GB).
• node['couch_db']['config]['couchdb']['os_process_timeout'] - OS process timeout for view and external servers in milliseconds, defaults to 5000 (5 seconds).
• node['couch_db']['config]['couchdb']['max_dbs_open'] - Upper bound limit on the number of databases that can be open at one time, defaults to 100.
• node['couch_db']['config]['couchdb']['delayed_commits'] - Determines if commits should be delayed, defaults to true.
• node['couch_db']['config]['couchdb']['batch_save_size'] - Number of document at which to save a batch, defaults to 1000.
• node['couch_db']['config]['couchdb']['batch_save_interval'] - Interval after which to save batches in milliseconds, default to 1000 (1 second).

Section [httpd]

• node['couch_db']['config']['httpd']['port'] - Port CouchDB should bind to, defaults to 5984.
• node['couch_db']['config']['httpd']['bind_address'] - IP address CouchDB should bind to, defaults to 127.0.0.1.

Section [log]

• node['couch_db']['config']['log']['level'] - CouchDB's log level, defaults to info.

Recipes

default

Installs the couchdb package, creates the data directory and starts the couchdb service.

source

Downloads the CouchDB source from the Apache project site, plus development dependencies. Then builds the binaries for installation, creates a user and directories, then sets up the couchdb service. Uses the init script provided in the cookbook.

License and Author

• Author: Joshua Timberman (joshua@opscode.com)
• Author: Matthieu Vachon (matthieu.o.vachon@gmail.com)
• Author: Joan Touzet (wohali@apache.org)

Copyright 2009-2014, Opscode, Inc.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.