openstack-manuals/doc/common/tables/nova-database.xml

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  <table rules="all" xml:id="config_table_nova_database">
    <caption>Description of database configuration options</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><option>db_driver</option> = <replaceable>nova.db</replaceable></td>
        <td>(StrOpt) The driver to use for database access</td>
      </tr>
      <tr>
        <th colspan="2">[api_database]</th>
      </tr>
      <tr>
        <td><option>connection</option> = <replaceable>None</replaceable></td>
        <td>(StrOpt) The SQLAlchemy connection string to use to connect to the Nova API database.</td>
      </tr>
      <tr>
        <td><option>connection_debug</option> = <replaceable>0</replaceable></td>
        <td>(IntOpt) Verbosity of SQL debugging information: 0=None, 100=Everything.</td>
      </tr>
      <tr>
        <td><option>connection_trace</option> = <replaceable>False</replaceable></td>
        <td>(BoolOpt) Add Python stack traces to SQL as comment strings.</td>
      </tr>
      <tr>
        <td><option>idle_timeout</option> = <replaceable>3600</replaceable></td>
        <td>(IntOpt) Timeout before idle SQL connections are reaped.</td>
      </tr>
      <tr>
        <td><option>max_overflow</option> = <replaceable>None</replaceable></td>
        <td>(IntOpt) If set, use this value for max_overflow with SQLAlchemy.</td>
      </tr>
      <tr>
        <td><option>max_pool_size</option> = <replaceable>None</replaceable></td>
        <td>(IntOpt) Maximum number of SQL connections to keep open in a pool.</td>
      </tr>
      <tr>
        <td><option>max_retries</option> = <replaceable>10</replaceable></td>
        <td>(IntOpt) Maximum number of database connection retries during startup. Set to -1 to specify an infinite retry count.</td>
      </tr>
      <tr>
        <td><option>mysql_sql_mode</option> = <replaceable>TRADITIONAL</replaceable></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><option>pool_timeout</option> = <replaceable>None</replaceable></td>
        <td>(IntOpt) If set, use this value for pool_timeout with SQLAlchemy.</td>
      </tr>
      <tr>
        <td><option>retry_interval</option> = <replaceable>10</replaceable></td>
        <td>(IntOpt) Interval between retries of opening a SQL connection.</td>
      </tr>
      <tr>
        <td><option>slave_connection</option> = <replaceable>None</replaceable></td>
        <td>(StrOpt) The SQLAlchemy connection string to use to connect to the slave database.</td>
      </tr>
      <tr>
        <td><option>sqlite_synchronous</option> = <replaceable>True</replaceable></td>
        <td>(BoolOpt) If True, SQLite uses synchronous mode.</td>
      </tr>
      <tr>
        <th colspan="2">[database]</th>
      </tr>
      <tr>
        <td><option>backend</option> = <replaceable>sqlalchemy</replaceable></td>
        <td>(StrOpt) The back end to use for the database.</td>
      </tr>
      <tr>
        <td><option>connection</option> = <replaceable>None</replaceable></td>
        <td>(StrOpt) The SQLAlchemy connection string to use to connect to the database.</td>
      </tr>
      <tr>
        <td><option>connection_debug</option> = <replaceable>0</replaceable></td>
        <td>(IntOpt) Verbosity of SQL debugging information: 0=None, 100=Everything.</td>
      </tr>
      <tr>
        <td><option>connection_trace</option> = <replaceable>False</replaceable></td>
        <td>(BoolOpt) Add Python stack traces to SQL as comment strings.</td>
      </tr>
      <tr>
        <td><option>db_inc_retry_interval</option> = <replaceable>True</replaceable></td>
        <td>(BoolOpt) If True, increases the interval between retries of a database operation up to db_max_retry_interval.</td>
      </tr>
      <tr>
        <td><option>db_max_retries</option> = <replaceable>20</replaceable></td>
        <td>(IntOpt) Maximum retries in case of connection error or deadlock error before error is raised. Set to -1 to specify an infinite retry count.</td>
      </tr>
      <tr>
        <td><option>db_max_retry_interval</option> = <replaceable>10</replaceable></td>
        <td>(IntOpt) If db_inc_retry_interval is set, the maximum seconds between retries of a database operation.</td>
      </tr>
      <tr>
        <td><option>db_retry_interval</option> = <replaceable>1</replaceable></td>
        <td>(IntOpt) Seconds between retries of a database transaction.</td>
      </tr>
      <tr>
        <td><option>idle_timeout</option> = <replaceable>3600</replaceable></td>
        <td>(IntOpt) Timeout before idle SQL connections are reaped.</td>
      </tr>
      <tr>
        <td><option>max_overflow</option> = <replaceable>None</replaceable></td>
        <td>(IntOpt) If set, use this value for max_overflow with SQLAlchemy.</td>
      </tr>
      <tr>
        <td><option>max_pool_size</option> = <replaceable>None</replaceable></td>
        <td>(IntOpt) Maximum number of SQL connections to keep open in a pool.</td>
      </tr>
      <tr>
        <td><option>max_retries</option> = <replaceable>10</replaceable></td>
        <td>(IntOpt) Maximum number of database connection retries during startup. Set to -1 to specify an infinite retry count.</td>
      </tr>
      <tr>
        <td><option>min_pool_size</option> = <replaceable>1</replaceable></td>
        <td>(IntOpt) Minimum number of SQL connections to keep open in a pool.</td>
      </tr>
      <tr>
        <td><option>mysql_sql_mode</option> = <replaceable>TRADITIONAL</replaceable></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><option>pool_timeout</option> = <replaceable>None</replaceable></td>
        <td>(IntOpt) If set, use this value for pool_timeout with SQLAlchemy.</td>
      </tr>
      <tr>
        <td><option>retry_interval</option> = <replaceable>10</replaceable></td>
        <td>(IntOpt) Interval between retries of opening a SQL connection.</td>
      </tr>
      <tr>
        <td><option>slave_connection</option> = <replaceable>None</replaceable></td>
        <td>(StrOpt) The SQLAlchemy connection string to use to connect to the slave database.</td>
      </tr>
      <tr>
        <td><option>sqlite_db</option> = <replaceable>oslo.sqlite</replaceable></td>
        <td>(StrOpt) The file name to use with SQLite.</td>
      </tr>
      <tr>
        <td><option>sqlite_synchronous</option> = <replaceable>True</replaceable></td>
        <td>(BoolOpt) If True, SQLite uses synchronous mode.</td>
      </tr>
      <tr>
        <td><option>use_db_reconnect</option> = <replaceable>False</replaceable></td>
        <td>(BoolOpt) Enable the experimental use of database reconnect on connection lost.</td>
      </tr>
      <tr>
        <td><option>use_tpool</option> = <replaceable>False</replaceable></td>
        <td>(BoolOpt) Enable the experimental use of thread pooling for all DB API calls</td>
      </tr>
    </tbody>
  </table>
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