v.22.6Improvement

Client Attempts Connection Using All DNS-Resolved IP Addresses

Official CH changelog text
Client will try every IP address returned by DNS resolution until successful connection. #37273 (Yakov Olkhovskiy).
The ClickHouse client now attempts to connect to every IP address returned by DNS resolution until a successful connection is established.

Why it matters

This feature improves connection reliability by trying all available IP addresses from DNS lookup, ensuring that if one IP is unreachable, the client can still connect using another IP.

How to use it

This behavior is applied automatically when the client resolves a DNS name to multiple IP addresses; no additional configuration is required.

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