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python連接clickhouse的端口問題及解決_python

作者:颹蕭蕭 ? 更新時間: 2022-07-11 編程語言

python連接clickhouse端口問題

   <!-- It is the name that will be shown in the clickhouse-client.
         By default, anything with "production" will be highlighted in red in query prompt.
    -->
    <!--display_name>production</display_name-->

    <!-- Port for HTTP API. See also 'https_port' for secure connections.
         This interface is also used by ODBC and JDBC drivers (DataGrip, Dbeaver, ...)
         and by most of web interfaces (embedded UI, Grafana, Redash, ...).
      -->
    <http_port>8123</http_port>

    <!-- Port for interaction by native protocol with:
         - clickhouse-client and other native ClickHouse tools (clickhouse-benchmark, clickhouse-copier);
         - clickhouse-server with other clickhouse-servers for distributed query processing;
         - ClickHouse drivers and applications supporting native protocol
         (this protocol is also informally called as "the TCP protocol");
         See also 'tcp_port_secure' for secure connections.
    -->
    <tcp_port>9000</tcp_port>

注意到可以使用兩個端口,8123 和 9000 分別接收 http 協議和tcp協議。

  • 如果用jdbc連接,端口為 8123
  • 如果用driver連接,端口為 9000
from clickhouse_driver import Client
client = Client(host=host, port=port, user=user, password=password, database='default')
client ?= get_client()
client.execute("show tables;")
print(client.execute("select * from test_arr"))
client.disconnect()

此時如果用8123端口則會得到如下報錯:

clickhouse_driver.errors.UnexpectedPacketFromServerError: Code: 102. Unexpected packet from server 192.168.137.101:8123 (expected Hello or Exception, got Unknown packet)

向clickhouse導數據報錯

clickhouse_driver.errors.UnexpectedPacketFromServerError: Code: 102

今天用python寫個etl從mysql向clickhouse同步數據, 數據量不到1千萬,導了一會報上面的第錯誤。然后在網上查了一下:找到文檔寫得很清楚:

Welcome to clickhouse-driver — clickhouse-driver 0.2.4 documentation

原來clickhouse提供兩個端口:8123和9000

用native protocal需要使用9000端口,然后修改端口后成功。

原文鏈接:https://goodgoodstudy.blog.csdn.net/article/details/119214731

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