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Allow disabling cross-namespace event sources #319

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merged 1 commit into from
Jan 28, 2022

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@stefanprodan stefanprodan commented Jan 27, 2022

On multi-tenant clusters, platform admins can disable cross-namespace event sources with the --no-cross-namespace-refs=true flag. When this flag is set, alerts can only refer to event sources in the same namespace as the alert object, preventing tenants from subscribing to anther tenant's events.

When the controller drops an event due to --no-cross-namespace-refs=true it logs:

alert 'tenant1/slack' can't process event from 'HelmRelease/tenant2/app', cross-namespace references have been blocked

Part of: fluxcd/flux2#2337

@stefanprodan stefanprodan added enhancement New feature or request area/alerting Alerting related issues and PRs labels Jan 27, 2022
@stefanprodan stefanprodan force-pushed the no-cross-namespace-refs branch 4 times, most recently from 4d8b20d to b85e902 Compare January 27, 2022 18:22
@stefanprodan stefanprodan force-pushed the no-cross-namespace-refs branch 3 times, most recently from adefa11 to 50ad628 Compare January 28, 2022 07:34
Introduce the flag `--no-cross-namespace-refs` (defaults to false) for allowing cluster admins to disable cross-namespace event sources for alerts.

Signed-off-by: Stefan Prodan <stefan.prodan@gmail.com>
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