def provision(self):
        with self.using(YumRole) as role:
            role.ensure_package_installed('postgresql-server')
            role.ensure_package_installed('postgresql-devel')

        self._ensure_initialized()
        self._ensure_running()
        self._run_on_startup()
Unlocks the token cache for this key.
dataset/ETHPy150Open python-provy/provy/provy/more/centos/database/postgresql.py/PostgreSQLRole.provision--crossover with--dataset/ETHPy150Open onitu/onitu/drivers/flickr/onitu_flickr/flickrapi/tokencache.py/LockingTokenCache.release