RJ / postgresql

Development repository for the postgresql cookbook

PostgreSQL cookbook

Installs and configures PostgreSQL as a client or a server.

Upgrading

If you are wondering where all the recipes went in v7.0+, or how on earth I use this new cookbook please see upgrading.md for a full description.

Requirements

Platforms

• Amazon Linux
• Debian 7+
• Ubuntu 14.04+
• Red Hat/CentOS/Scientific 6+
• Fedora

PostgreSQL version

We follow the currently supported versions listed on https://www.postgresql.org/support/versioning/

Chef

• Chef 13.8+

Cookbook Dependencies

None.

Resources

postgresql_client_install

This resource installs PostgreSQL client packages.

Actions

• install - (default) Install client packages

Properties

Name	Types	Description	Default	Required?
version	String	Version of PostgreSQL to install	'9.6'	no
setup_repo	Boolean	Define if you want to add the PostgreSQL repo	true	no
hba_file	String		#{conf_dir}/main/pg_hba.conf	no
ident_file	String		#{conf_dir}/main/pg_ident.conf	no
external_pid_file	String		/var/run/postgresql/#{version}-main.pid	no
password	String, nil	Pass in a password, or have the cookbook generate one for you		no

Examples

To install version 9.5:

postgresql_client_install 'My PostgreSQL Client install' do
  version '9.5'
end

postgresql_server_install

This resource installs PostgreSQL client and server packages.

Actions

• install - (default) Install client and server packages
• create - Initialize the database

Properties

Name	Types	Description	Default	Required?
version	String	Version of PostgreSQL to install	'9.6'	no
setup_repo	Boolean	Define if you want to add the PostgreSQL repo	true	no
hba_file	String	Path of pg_hba.conf file	<default_os_path>/pg_hba.conf'	no
ident_file	String	Path of pg_ident.conf file	<default_os_path>/pg_ident.conf	no
external_pid_file	String	Path of PID file	/var/run/postgresql/<version>-main.pid</version>	no
password	String, nil	Set PostgreSQL user password	'generate'	no
port	Integer	Set listen port of PostgreSQL service	5432	no
initdb_locale	String	Locale to initialise the database with	'C'	no

Examples

To install PostgreSQL server, set your own postgres password using non-default service port.

postgresql_server_install 'My PostgreSQL Server install' do
  action :install
end

postgresql_server_install 'Setup my PostgreSQL 9.6 server' do
  password 'MyP4ssw0rd'
  port 5433
  action :create
end

Known issues

On some platforms (e.g. Ubuntu 18.04), your initdb_locale should be set to the same as the template database GH-555.

postgresql_server_conf

This resource manages postgresql.conf configuration file.

Actions

• modify - (default) Manager PostgreSQL configuration file (postgresql.conf)

Properties

Name	Types	Description	Default	Required?
version	String	Version of PostgreSQL to install	'9.6'	no
data_directory	String	Path of PostgreSQL data directory	<default_os_data_path>	no
hba_file	String	Path of pg_hba.conf file	<default_os_conf_path>/pg_hba.conf	no
ident_file	String	Path of pg_ident.conf file	<default_os_conf_path>/pg_ident.conf	no
external_pid_file	String	Path of PID file	/var/run/postgresql/<postgresql_version>-main.pid	no
stats_temp_directory	String	Path of stats file	/var/run/postgresql/version>-main.pg_stat_tmp	no
port	Integer	Set listen port of PostgreSQL service	5432	no
additional_config	Hash	Extra configuration for the config file	{}	no

Examples

To setup your PostgreSQL configuration with a specific data directory. If you have installed a specific version of PostgreSQL (different from 9.6), you must specify version in this resource too.

postgresql_server_conf 'My PostgreSQL Config' do
  version '9.5'
  data_directory '/data/postgresql/9.5/main'
  notifies :reload, 'service[postgresql]'
end

postgresql_extension

This resource manages PostgreSQL extensions for a given database.

Actions

• create - (default) Creates an extension in a given database
• drop - Drops an extension from the database

Properties

Name	Types	Description	Default	Required?
database	String	Name of the database to install the extension into		yes
extension	String	Name of the extension to install the database	Name of resource	yes
version	String	Version of the extension to install		no
old_version	String	Older module name for new extension replacement. Appends FROM to extension query		no

Examples

To install the adminpack extension:

# Add the contrib package in Ubuntu/Debian
package 'postgresql-contrib-9.6'

# Install adminpack extension
postgresql_extension 'postgres adminpack' do
  database 'postgres'
  extension 'adminpack'
end

postgresql_access

This resource uses the accumulator pattern to build up the pg_hba.conf file via chef resources instead of piling on a mountain of chef attributes to make this cookbook more reusable. It directly mirrors the configuration options of the postgres hba file in the resource and by default notifies the server with a reload to avoid a full restart, causing a potential outage of service. To revoke access, simply remove the resource and the access change won't be computed into the final pg_hba.conf

Actions

• grant - (default) Creates an access line inside of pg_hba.conf

Properties

Name	Types	Description	Default	Required?
name	String	Name of the access resource, this is left as a comment inside the pg_hba config	Resource name	yes
source	String	The cookbook template filename if you want to use your own custom template	'pg_hba.conf.erb'	yes
cookbook	String	The cookbook to look in for the template source	'postgresql'	yes
comment	String	A comment to leave above the entry in pg_hba	nil	no
access_type	String	The type of access, e.g. local or host	'local'	yes
access_db	String	The database to access. Can use 'all' for all databases	'all'	yes
access_user	String	The user accessing the database. Can use 'all' for any user	'all'	yes
access_addr	String	The address(es) allowed access. Can be nil if method ident is used since it is local then	nil	no
access_method	String	Authentication method to use	'ident'	yes

Examples

To grant access to the PostgreSQL user with ident authentication:

postgresql_access 'local_postgres_superuser' do
  comment 'Local postgres superuser access'
  access_type 'local'
  access_db 'all'
  access_user 'postgres'
  access_addr nil
  access_method 'ident'
end

This generates the following line in the pg_hba.conf:

# Local postgres superuser access
local   all             postgres                                ident

Note: The template by default generates a local access for Unix domain sockets only to support running the SQL execute resources. In Postgres version 9.1 and higher, the method is 'peer' instead of 'ident' which is identical. It looks like this:

# "local" is for Unix domain socket connections only
local   all             all                                     peer

postgresql_ident

This resource generate pg_ident.conf configuration file to manage user mapping between system and PostgreSQL users.

Actions

• create - (default) Creates an mapping line inside of pg_ident.conf

Properties

Name	Types	Description	Default	Required?
mapname	String	Name of the user mapping	Resource name	yes
source	String	The cookbook template filename if you want to use your own custom template	'pg_ident.conf.erb'	no
cookbook	String	The cookbook to look in for the template source	'postgresql'	no
comment	String, nil	A comment to leave above the entry in pg_ident	nil	no
system_user	String	System user or regexp used for the mapping	None	yes
pg_user	String	Pg user or regexp used for the mapping	None	yes

Examples

Creates a mymapping mapping that map john system user to user1 PostgreSQL user:

postgresql_ident 'Map john to user1' do
  comment 'John Mapping'
  mapname 'mymapping'
  system_user 'john'
  pg_user 'user1'
end

This generates the following line in the pg_ident.conf:

# MAPNAME       SYSTEM-USERNAME         PG-USERNAME

# John Mapping
mymapping       john                    user1

To grant access to the foo user with password authentication:

postgresql_access 'local_foo_user' do
  comment 'Foo user access'
  access_type 'host'
  access_db 'all'
  access_user 'foo'
  access_addr '127.0.0.1/32'
  access_method 'md5'
end

This generates the following line in the pg_hba.conf:

# Local postgres superuser access
host   all             foo               127.0.0.1/32           ident

postgresql_database

This resource manages PostgreSQL databases.

Actions

• create - (default) Creates the given database.
• drop - Drops the given database.

Properties

Name	Types	Description	Default	Required?
database	String	Name of the database to create	Resource name	yes
user	String	User which run psql command	'postgres'	no
template	String	Template used to create the new database	'template1'	no
host	String	Define the host server where the database creation will be executed	Not set (localhost)	no
port	Integer	Define the port of PostgreSQL server	5432	no
encoding	String	Define database encoding	'UTF-8'	no
locale	String	Define database locale	'en_US.UTF-8'	no
owner	String	Define the owner of the database	Not set	no

Examples

To create database named 'my_app' with owner 'user1':

postgresql_database 'my_app' do
  owner 'user1'
end

Known issues

On some platforms (e.g. Ubuntu 18.04), your initdb_locale should be set to the same as the template database GH-555.

postgresql_user

This resource manage PostgreSQL users.

Actions

• create - (default) Creates the given user with default or given privileges.
• update - Update user privilieges.
• drop - Deletes the given user.

Properties

Name	Types	Description	Default	Required?
create_user	String	User to create (defaults to the resource name)		Yes
superuser	Boolean	Define if user needs superuser role	false	no
createdb	Boolean	Define if user needs createdb role	false	no
createrole	Boolean	Define if user needs createrole role	false	no
inherit	Boolean	Define if user inherits the privileges of roles	true	no
replication	Boolean	Define if user needs replication role	false	no
login	Boolean	Define if user can login	true	no
password	String	Set user's password		no
encrypted_password	String	Set user's password with an hashed password		no
valid_until	String	Define an account expiration date		no
attributes	Hash	Additional attributes for :update action	{}	no
user	String	User for command	postgres	no
database	String	Database for command		no
host	String	Hostname for command		no
port	Integer	Port number to connect to postgres	5432	no

Examples

Create a user user1 with a password, with createdb role and set an expiration date to 2018, Dec 21.

postgresql_user 'user1' do
  password 'UserP4ssword'
  createdb true
  valid_until '2018-12-31'
end

Create a user user1 with a password, with createdb role and set an expiration date to 2018, Dec 21.

postgresql_user 'user1' do
  password 'UserP4ssword'
  createdb true
  valid_until '2018-12-31'
end

Usage

To install and configure your PostgreSQL instance you need to create your own cookbook and call needed resources with your own parameters.

More examples can be found in test/cookbooks/test/recipes

Example Usage

# cookbooks/my_postgresql/recipes/default.rb

postgresql_client_install 'PostgreSQL Client' do
  setup_repo false
  version '10.6'
end

postgresql_server_install 'PostgreSQL Server' do
  version '10.6'
  setup_repo false
  password 'P0stgresP4ssword'
end

postgresql_server_conf 'PostgreSQL Config' do
  notifies :reload, 'service[postgresql]'
end

Contributing

Please refer to each project's style guidelines and guidelines for submitting patches and additions. In general, we follow the "fork-and-pull" Git workflow.

1. Fork the repo on GitHub
2. Clone the project to your own machine
3. Commit changes to your own branch
4. Push your work back up to your fork
5. Submit a Pull request so that we can review your changes

NOTE: Be sure to merge the latest from "upstream" before making a pull request!

Contribution informations for this project

License

Copyright 2010-2017, Chef Software, 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.