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Cluster Dashboard

The cluster dashboard focuses on replication health and comparative performance across cluster members. The dashboard appears when users select a cluster node in the cluster navigator.

Topology Diagram

The topology section renders an interactive diagram showing servers as nodes with color-coded replication edges. Each edge represents a replication relationship between two servers.

The diagram uses the following color scheme for edges:

  • Physical and streaming replication edges appear in the primary theme color (blue).
  • Spock replication edges appear in the warning theme color (orange).
  • Logical replication edges appear in the success theme color (green).

Edge labels display the replication type so users can distinguish between different replication methods at a glance.

Replication Lag

The replication lag section displays KPI tiles for current lag values alongside a time-series chart. The chart tracks replication lag over the selected time range for all replication relationships in the cluster.

Comparative Metrics

The comparative charts section presents side-by-side metrics for all servers in the cluster. The section allows administrators to identify performance disparities between cluster members. The cache hit ratio chart plots a per-interval ratio for each server, leaving a gap for intervals with no block access; because only shared_buffers hits count, a lower ratio does not by itself indicate slow I/O. Users can click a server entry to navigate to the server dashboard for that server.