feature: add support for an optional read-only cluster endpoint for ClickHouse backends #3127
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chasers
approved these changes
Feb 2, 2026
Ziinc
approved these changes
Feb 3, 2026
…onfiguration-options-for-a-separate
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Adds an optional
read_only_urlconfig option for ClickHouse backends with the use-case being the compute-compute/Warehouses feature available in ClickHouse Cloud.When the config is set for that option, ClickHouse reads will use the dedicated read cluster rather than the primary cluster, which will only be used for inserts. Because users/roles are identical in this topology, the credentials configured for the primary endpoint are reused. If this option is set to an empty string or not provided, the CH backend will use the same endpoint for reads/writes as it does now.
This also adds
read_only_urlto the whitelisted config options so the value is shown in the UI.