ScyllaDB Operator 1.19.0 introduces several significant enhancements, including multi-tenant monitoring with Prometheus and OpenShift support, an improved sysctl configuration API, and an opt-in synchronization feature for safer topology changes. This release offers "External mode," which allows multiple ScyllaDB clusters to share an existing Prometheus deployment for monitoring, facilitating integration with Red Hat OpenShift's User Workload Monitoring. Additionally, the must-gather tool now includes a guardrail to prevent the accidental inclusion of sensitive information, while sysctl configurations are optimized by moving them to a more appropriate API location. The update also introduces a barrier to ensure no nodes are down during topology changes, though this is an opt-in feature. Deprecated features include the previous sysctl configuration method and exposeOptions in ScyllaDBMonitoring components, with users encouraged to transition to more flexible alternatives. The release also aligns with updated dependencies and lays the groundwork for future deprecations of the "Managed mode" monitoring setup.