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  <table rules="all" xml:id="config_table_ceilometer_database">
    <caption>Description of configuration options for database</caption>
    <col width="50%"/>
    <col width="50%"/>
    <thead>
      <tr>
        <th>Configuration option = Default value</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <th colspan="2">[DEFAULT]</th>
      </tr>
      <tr>
        <td>database_connection = None</td>
        <td>(StrOpt) DEPRECATED - Database connection string.</td>
      </tr>
      <tr>
        <th colspan="2">[database]</th>
      </tr>
      <tr>
        <td>alarm_connection = None</td>
        <td>(StrOpt) The connection string used to connect to the alarm database. (if unset, connection is used)</td>
      </tr>
      <tr>
        <td>backend = sqlalchemy</td>
        <td>(StrOpt) The backend to use for db</td>
      </tr>
      <tr>
        <td>connection = None</td>
        <td>(StrOpt) The SQLAlchemy connection string used to connect to the database</td>
      </tr>
      <tr>
        <td>connection_debug = 0</td>
        <td>(IntOpt) Verbosity of SQL debugging information. 0=None, 100=Everything</td>
      </tr>
      <tr>
        <td>connection_trace = False</td>
        <td>(BoolOpt) Add python stack traces to SQL as comment strings</td>
      </tr>
      <tr>
        <td>db_inc_retry_interval = True</td>
        <td>(BoolOpt) Whether to increase interval between db connection retries, up to db_max_retry_interval</td>
      </tr>
      <tr>
        <td>db_max_retries = 20</td>
        <td>(IntOpt) maximum db connection retries before error is raised. (setting -1 implies an infinite retry count)</td>
      </tr>
      <tr>
        <td>db_max_retry_interval = 10</td>
        <td>(IntOpt) max seconds between db connection retries, if db_inc_retry_interval is enabled</td>
      </tr>
      <tr>
        <td>db_retry_interval = 1</td>
        <td>(IntOpt) seconds between db connection retries</td>
      </tr>
      <tr>
        <td>idle_timeout = 3600</td>
        <td>(IntOpt) Timeout before idle sql connections are reaped</td>
      </tr>
      <tr>
        <td>max_overflow = None</td>
        <td>(IntOpt) If set, use this value for max_overflow with sqlalchemy</td>
      </tr>
      <tr>
        <td>max_pool_size = None</td>
        <td>(IntOpt) Maximum number of SQL connections to keep open in a pool</td>
      </tr>
      <tr>
        <td>max_retries = 10</td>
        <td>(IntOpt) Maximum db connection retries during startup. (setting -1 implies an infinite retry count)</td>
      </tr>
      <tr>
        <td>metering_connection = None</td>
        <td>(StrOpt) The connection string used to connect to the meteting database. (if unset, connection is used)</td>
      </tr>
      <tr>
        <td>min_pool_size = 1</td>
        <td>(IntOpt) Minimum number of SQL connections to keep open in a pool</td>
      </tr>
      <tr>
        <td>mysql_sql_mode = TRADITIONAL</td>
        <td>(StrOpt) The SQL mode to be used for MySQL sessions. This option, including the default, overrides any server-set SQL mode. To use whatever SQL mode is set by the server configuration, set this to no value. Example: mysql_sql_mode=</td>
      </tr>
      <tr>
        <td>pool_timeout = None</td>
        <td>(IntOpt) If set, use this value for pool_timeout with sqlalchemy</td>
      </tr>
      <tr>
        <td>retry_interval = 10</td>
        <td>(IntOpt) Interval between retries of opening a sql connection</td>
      </tr>
      <tr>
        <td>sqlite_db = ceilometer.sqlite</td>
        <td>(StrOpt) The file name to use with SQLite</td>
      </tr>
      <tr>
        <td>sqlite_synchronous = True</td>
        <td>(BoolOpt) If True, SQLite uses synchronous mode</td>
      </tr>
      <tr>
        <td>time_to_live = -1</td>
        <td>(IntOpt) Number of seconds that samples are kept in the database for (&lt;= 0 means forever).</td>
      </tr>
      <tr>
        <td>use_db_reconnect = False</td>
        <td>(BoolOpt) Enable the experimental use of database reconnect on connection lost</td>
      </tr>
    </tbody>
  </table>
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