4.6 Tuning Antimalware Database Synchronization

The Kafka RDBMS producer is responsible for identifying changes in the ZENworks database (RDBMS) tables and publishing those changes to topics in Kafka. The connector-configs.xml file contains the producer settings:

Linux: /etc/opt/microfocus/zenworks/connector-configs.xml

Windows: %ZENSERVER_HOME%\conf\connector-configs.xml

Each synced database table, along with its synchronization settings, is defined in a <connector-config> section of the file. For example, the zvpolicy table is defined as:

<connector-config name="ZENconnector-zvpolicy">
     <config name="poll.interval.ms" value="90000"/>
     <config name="timestamp.delay.interval.ms" value="120000"/>
</connector-config>

This allows independent adjustments to the synchronization frequency of each database table. For example, reducing the poll interval for the zvpolicy database table would cause policy data to be synced more frequently. You should be aware of the following before adjusting settings:

The Kafka Antimalware consumer reads data from the Kafka topics and persists it into the Antimalware database. The antimalware-cdc-consumer-config.xml file contains the consumer configuration settings:

Linux: /etc/opt/microfocus/zenworks/antimalware/antimalware-cdc-consumer-config.xml

Windows: %ZENSERVER_HOME%\conf\antimalware\antimalware-cdc-consumer-config.xml

Each topic (i.e. synced database table), along with its synchronization settings, is defined in a <consumer-config> section of the file. For example, the topic for the zvpolicy table is defined as:

<consumer-config name="antimalware-zvpolicy" topics="zenview.*-zvpolicy" group-id="antimalware-microservice" poll-timeout="10000">
        <kafka-properties>
            <property key="max.poll.records" value="5000"/>
            <property key="max.poll.interval.ms" value="600000"/>
            <property key="session.timeout.ms" value="30000"/>
            <property key="default.api.timeout.ms" value="120000"/>
            <property key="partition.assignment.strategy" value="org.apache.kafka.clients.consumer.RoundRobinAssignor"/>
        </kafka-properties>
        <consumer-properties>
            <property key="mapping.objectname" value="com.microfocus.zenworks.cdc.objects.ZvPolicy"/>
            <property key="filter" value="com.microfocus.zenworks.cdc.filters.AvPolicyFilter"/>
            <property key="processor" value="com.microfocus.zenworks.kafka.processor.SimpleDatabaseDimensionProcessor"/>
            <property key="eq.pkey.field" value="zuid"/>
        </consumer-properties>
    </consumer-config>

Each <consumer-config> section includes both Kafka configuration settings <kafka-properties> and Antimalware consumer configuration settings <consumer-properties> that apply to the synchronization of that section’s topic.

The <consumer-properties> should not be modified.

The <kafka-properties> can be modified if necessary. Refer to the Kafka Consumer Configurations documentation for descriptions of the configuration settings.

The Kafka Change Data Capture (CDC) uses a c3p0 library to manage the database connection pool. The table below lists the c3p0 settings that can be adjusted to tune performance. The settings are in the cdc-c3p0.properties file:

Linux: /etc/opt/microfocus/antimalware/cdc-c3p0.properties

Windows: %ZENSERVER_HOME%\services\antimalware\conf\cdc-c3p0.properties

The default values should provide sufficient performance but you can uncomment and change values as necessary. See this c3po documentation for setting descriptions.