我正在尝试将 MQTT 代理与 Kafka 连接。我想安装一个连接器。所以我从 confluent 的官方网站复制了这个命令:confluent-hub install confluentinc/kafka-connect-mqtt:1.4.0
。但我收到这些错误:
confluent-hub install confluentinc/kafka-connect-mqtt:1.4.0
Do you want to install this into /usr/share/confluent-hub-components? (yN) y
Component's license:
Confluent Software Evaluation License
https://www.confluent.io/software-evaluation-license
I agree to the software license agreement (yN) y
Downloading component Kafka Connect MQTT 1.4.0, provided by Confluent, Inc. from Confluent Hub and installing into /usr/share/confluent-hub-components
Do you want to uninstall existing version 1.4.0? (yN) y
Detected Worker's configs:
1. Standard: /etc/kafka/connect-distributed.properties
2. Standard: /etc/kafka/connect-standalone.properties
3. Standard: /etc/schema-registry/connect-avro-distributed.properties
4. Standard: /etc/schema-registry/connect-avro-standalone.properties
5. Used by Connect process with PID : /tmp/confluent.B3k50ol5/connect/connect.properties
Do you want to update all detected configs? (yN) y
Adding installation directory to plugin path in the following files:
/etc/kafka/connect-distributed.properties
Unable to update Worker's configuration file /etc/kafka/connect-distributed.properties
Unable to save to file /etc/kafka/connect-distributed.properties
Error: Unknown error
我已经尝试过 ubuntu 18.04 lts 和 ubuntu 20.04 lts,但仍然遇到相同的错误。请告诉我这里出了什么问题,我该如何安装这个连接器?