ClickHouse/tests/integration/helpers/keeper_config2.xml

<clickhouse>
    <listen_try>true</listen_try>
    <listen_host>::</listen_host>
    <listen_host>0.0.0.0</listen_host>

    <logger>
        <level>trace</level>
        <log>/var/log/clickhouse-keeper/clickhouse-keeper.log</log>
        <errorlog>/var/log/clickhouse-keeper/clickhouse-keeper.err.log</errorlog>
    </logger>

    <keeper_server>
        <tcp_port>2181</tcp_port>
        <server_id>2</server_id>

        <coordination_settings>
            <operation_timeout_ms>10000</operation_timeout_ms>
            <session_timeout_ms>15000</session_timeout_ms>
            <raft_logs_level>trace</raft_logs_level>
            <force_sync>false</force_sync>
            <election_timeout_lower_bound_ms>2000</election_timeout_lower_bound_ms>
            <election_timeout_upper_bound_ms>4000</election_timeout_upper_bound_ms>

            <async_replication>1</async_replication>
        </coordination_settings>

        <raft_configuration>
            <server>
                <id>1</id>
                <hostname>zoo1</hostname>
                <port>9444</port>
            </server>
            <server>
                <id>2</id>
                <hostname>zoo2</hostname>
                <port>9444</port>
            </server>
            <server>
                <id>3</id>
                <hostname>zoo3</hostname>
                <port>9444</port>
            </server>
        </raft_configuration>
    </keeper_server>
</clickhouse>