ClickHouse

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<clickhouse>
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    <logger>
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        <!-- Possible levels [1]:
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          - none (turns off logging)
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          - fatal
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          - critical
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          - error
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          - warning
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          - notice
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          - information
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          - debug
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          - trace
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            [1]: https://github.com/pocoproject/poco/blob/poco-1.9.4-release/Foundation/include/Poco/Logger.h#L105-L114
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        -->
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        <level>trace</level>
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        <log>/var/log/clickhouse-keeper/clickhouse-keeper.log</log>
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        <errorlog>/var/log/clickhouse-keeper/clickhouse-keeper.err.log</errorlog>
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        <!-- Rotation policy
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             See https://github.com/pocoproject/poco/blob/poco-1.9.4-release/Foundation/include/Poco/FileChannel.h#L54-L85
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          -->
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        <size>1000M</size>
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        <count>10</count>
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        <!-- <console>1</console> --> <!-- Default behavior is autodetection (log to console if not daemon mode and is tty) -->
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    </logger>
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    <max_connections>4096</max_connections>
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    <keeper_server>
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            <tcp_port>9181</tcp_port>
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            <!-- Must be unique among all keeper serves -->
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            <server_id>1</server_id>
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            <log_storage_path>/var/lib/clickhouse/coordination/logs</log_storage_path>
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            <snapshot_storage_path>/var/lib/clickhouse/coordination/snapshots</snapshot_storage_path>
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            <coordination_settings>
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                <operation_timeout_ms>10000</operation_timeout_ms>
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                <min_session_timeout_ms>10000</min_session_timeout_ms>
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                <session_timeout_ms>100000</session_timeout_ms>
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                <raft_logs_level>information</raft_logs_level>
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                <compress_logs>false</compress_logs>
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                <!-- All settings listed in https://github.com/ClickHouse/ClickHouse/blob/master/src/Coordination/CoordinationSettings.h -->
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            </coordination_settings>
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            <!-- enable sanity hostname checks for cluster configuration (e.g. if localhost is used with remote endpoints) -->
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            <hostname_checks_enabled>true</hostname_checks_enabled>
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            <raft_configuration>
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                <server>
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                    <id>1</id>
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                    <!-- Internal port and hostname -->
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                    <hostname>localhost</hostname>
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                    <port>9234</port>
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                </server>
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                <!-- Add more servers here -->
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            </raft_configuration>
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    </keeper_server>
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    <openSSL>
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      <server>
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            <!-- Used for secure tcp port -->
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            <!-- openssl req -subj "/CN=localhost" -new -newkey rsa:2048 -days 365 -nodes -x509 -keyout /etc/clickhouse-server/server.key -out /etc/clickhouse-server/server.crt -->
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            <certificateFile>/etc/clickhouse-keeper/server.crt</certificateFile>
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            <privateKeyFile>/etc/clickhouse-keeper/server.key</privateKeyFile>
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            <!-- dhparams are optional. You can delete the <dhParamsFile> element.
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                 To generate dhparams, use the following command:
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                  openssl dhparam -out /etc/clickhouse-keeper/dhparam.pem 4096
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                 Only file format with BEGIN DH PARAMETERS is supported.
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              -->
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            <dhParamsFile>/etc/clickhouse-keeper/dhparam.pem</dhParamsFile>
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            <verificationMode>none</verificationMode>
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            <loadDefaultCAFile>true</loadDefaultCAFile>
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            <cacheSessions>true</cacheSessions>
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            <disableProtocols>sslv2,sslv3</disableProtocols>
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            <preferServerCiphers>true</preferServerCiphers>
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        </server>
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    </openSSL>
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</clickhouse>
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