chef/cookbooks/mariadb

MariaDB Cookbook

Description

This cookbook contains all the stuffs to install and configure a mariadb server on a dpkg/apt compliant system (typically debian), or a rpm/yum compliant system (typically centos)

Requirements

repository

• mariadb - This cookbook need that you have a valid apt repository installed with the mariadb official packages

packages

• percona-xtrabackup - if you want to use the xtrabckup SST Auth for galera cluster.
• socat - if you want to use the xtrabckup SST Auth for galera cluster.
• rsync - if you want to use the rsync SST Auth for galera cluster.
• debconf-utils - if you use debian platform family.

operating system

• debian - this cookbook is fully tested on debian
• ubuntu - not fully tested on ubuntu, but should work
• centos - not fully tested on centos, but should work

Attributes

mariadb::default

Key	Type	Description	Default
['mariadb']['install']['version']	String	Version to install (currently 10.0 et 5.5)	10.0
['mariadb']['use_default_repository']	Boolean	Wether to install MariaDB default repository or not. If you don't have a local repo containing packages, put it to true	false
['mariadb']['server_root_password']	String	local root password
['mariadb']['forbid_remote_root']	Boolean	Wether to activate root remote access	true
['mariadb']['allow_root_pass_change']	Boolean	Wether to allow the recipe to change root password after the first install	false
['mariadb']['client']['development_files']	Boolean	Wether to install development files in client recipe	true
['mariadb']['apt_repository']['base_url']	String	The http base url to use when installing from default repository	'ftp.igh.cnrs.fr/pub/mariadb/repo'
['mariadb']['install']['prefer_os_package']	Boolean	Indicator for preferring use packages shipped by running os	false

Usage

To install a default server for mariadb choose the version you want (MariaDB 5.5 or 10, galera or not), then call the recipe accordingly.

List of availables recipes:

• mariadb::default (just call server recipe with default options)
• mariadb::server
• mariadb::galera
• mariadb::client

Please be ware that by default, the root password is empty! If you want have changed it use the node['mariadb']['server_root_password'] attribute to put a correct value. And by default the remote root access is not activated. Use node['mariadb']['forbid_remote_root'] attribute to change it.

Sometimes, the default apt repository used for apt does not work (see issue #6). In this case, you need to choose another mirror which worki (pick it from mariadb website), and put the http base url in the attribute node['mariadb']['apt_repository']['base_url'].

mariadb::galera

When installing the mariadb::galera on debian recipe, You have to take care of one specific attribute: node['mariadb']['debian']['password'] which default to 'please-change-me' As wee need to have the same password for this user on the whole cluster nodes... We will change the default install one by the content of this attribute.

mariadb::client

By default this recipe install the client, and all needed packages to develop client application. If you do not want to install development files when installing client package, set the attribute node['mariadb']['client']['development_files'] to false.

Providers

This recipe define 2 providers:

• Chef::Provider::Mariadb::Configuration shortcut resource mariadb_configuration
• Chef::Provider::Mariadb::Replication shortcut resource mariadb_replication

mariadb_configuration

Mainly use for internal purpose. You can use it to create a new configuration file into configuration dir. You have to define 2 variables section and option. Where section is the configuration section, and option is a hash of key/value. The name of the resource is used as base for the filename.

Example:

mariadb_configuration 'fake' do
  section 'mysqld'
  option {foo: 'bar'}
end

will become the file fake.cnf in the include dir (depend on your platform), which contain:

[mysqld]
foo=bar

If the value start with a '#', then it's considered as a comment, and the value is printed as is (without the key)

Example:

mariadb_configuration 'fake' do
  section 'mysqld'
  option {comment1: '# Here i am', foo: bar}
end

will become the file fake.cnf in the include dir (depend on your platform), which contain:

[mysqld]
# Here i am
foo=bar

mariadb_replication

This LWRP is used to manage replication setup on a host. To use this LWRP, the node need to have the mysql binary installed (via the mariadb::client or mariadb::server or mariadb::galera recipe). It have 4 actions:

• add - to add a new replication setup (become a slave)
• stop - to stop the slave replication
• start - to start the slave replication
• remove - to remove the slave replication configuration

The resource name need to be 'default' if your don't want to use a named connection (multi source replication in MariaDB 10).

So by default the provider try to use the local instance of mysql, with the current user and no password. If you want to change, you have to define host, port, user or password

mariadb_replication 'default' do
  user 'root'
  password 'fakepass'
  host 'fakehost'
  action :stop
end

will stop the replication on the host fakehost using the user root and password fakepass to connect to.

When you add a replication configuration, you have to define at least 4 values master_host, master_user, master_password and master_use_gtid. And if you don't want the GTID support, you have to define also master_log_file and master_log_pos

Example:

mariadb_replication 'usefull_conn_name' do
  master_host 'server1'
  master_user 'slave_user'
  master_password 'slave_password'
  master_use_gtid 'current_pos'
  action :add
end

Contributing

1. Fork the repository on Github
2. Create a named feature branch (like add_component_x)
3. Write your change
4. Write tests for your change (if applicable)
5. Run the tests, ensuring they all pass
6. Submit a Pull Request using Github

License and Authors

Authors: Nicolas Blanc sinfomicien@gmail.com