Clickhouse Exception Code 1002 host port failed to respond

This error happens 1-2 times a week. Everything is working fine but suddenly some queries cant be executed because clickhouse throws this exception.

[https-jsse-nio-28443-exec-10] ERROR SellinaChatService:100 -> Exception : ClickHouse exception, code: 1002, host: 164.52.197.xxx, port: 8123; 164.52.197.xxx:8123 failed to respond

 

This is my keep alive timeout

<keep_alive_timeout>3</keep_alive_timeout>

What can be the possible cause of this issue?

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