python连接clickhouse的端口问题及解决_Python

python连接clickhouse的端口问题及解决

2023-02-06 10:48颹蕭蕭 Python

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python 连接 clickhouse 端口问题

				?

									<!-- 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>

注意到可以使用两个端口，8123 和 9000 分别接收 http 协议和tcp协议。

如果用jdbc连接，端口为 8123
如果用driver连接，端口为 9000

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									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()

此时如果用8123端口则会得到如下报错：

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