POSTGRESQL – PostgreSQL Standalone or Replication.
Cluster Status
The cluster status:
ACTIVE (green) – The cluster is up and running. All cluster nodes are running normally.
DEGRADED (yellow) – The full set of nodes in a cluster is not available. One or more nodes is down or unreachable.
UNDER MAINTENANCE (blue) – The cluster is in maintenance mode. During maintenance, alarms will not be raised, but the automatic recovery still happening (if enabled).
FAILURE (red) – The cluster is down. All or most of the nodes are down or unreachable, resulting in the cluster fails to operate as expected.
Auto Recovery
The auto-recovery status of Galera Cluster:
Cluster – If set to ON, ClusterControl will perform automatic recovery if it detects cluster failure.
Node – If set to ON, ClusterControl will perform automatic recovery if it detects node failure.
Node Type and Status
See table on node status indicators below.
Node status indicator:
Indicator
Description
Green (tick)
OK: Indicates the node is working fine.
Yellow (exclamation)
WARNING: Indicates the node is degraded and not fully performing as expected.
Red (wrench)
MAINTENANCE: Indicates that maintenance mode is on for this node.
Dark red (cross)
PROBLEMATIC: Indicates the node is down or unreachable.