Postgres Functions

Tasks for managing clusters, databases, users and configurations for a Postgres server.

create_db_user(username, password=None, flags=None)

Creates a database user and sets a password if given. You can pass additional creation flags with the flags parameter.

db_user_exists(username)

Return True if the database user already exists.

excute_query(query, db=None, flags=None, use_sudo=False, **kwargs)

Execute a SQL query on the remote server. You can specify the DB and additional flags with the db and flags parameter. If use_sudo is True then this will be executed as the postgres user. Additional **kwargs are passed to sudo or run.

create_db(name, owner=None, encoding=u'UTF-8', template='template1')

Creates a new database with a given owner (if given) and encoding. You can specify which database is copied to create the new one with the template parameter. Using 'template0' as the template will allow creating a database with a different encoding from the default, which can’t be done from template1.

db_exists(name)

Return True if the database already exists.

upload_pg_hba_conf(template_name=None, pg_version=None, pg_cluster='main', restart=True)

Uploads a configuration to /etc/postgresql/<version>/<cluster>/pg_hba.conf from a template. If not given the Postgres version will be detected on the server. The default template name is postgres/pg_hba.conf.

reset_cluster(pg_cluster='main', pg_version=None, encoding=u'UTF-8', locale=u'en_US.UTF-8')

Drops and restores a given cluster. This is mainly used for provisioning a new server to ensure the cluster has the desired default encoding.

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