This topic describes performance metrics related to error logs in an OceanBase cluster. You can specify a statistical range to query the metrics in a single zone or on a single OBServer node of an OceanBase cluster.
observer
Definition
The number of error logs on an OBServer node of a cluster within the specified statistical range.
Description
| Metric | Metric name | Unit |
|---|---|---|
| observer | observer_log_error_count | N/A |
Calculation expression
sum(rate(ob_log_level_count{level="ERROR",logSourceType="observer",@LABELS}[@INTERVAL])) by (@GBLABELS)
election
Definition
The number of election error logs on an OBServer node of a cluster within the specified statistical range.
Description
| Metric | Metric name | Unit |
|---|---|---|
| election | election_log_error_count | N/A |
Calculation expression
sum(rate(ob_log_level_count{level="ERROR",logSourceType="election",@LABELS}[@INTERVAL])) by (@GBLABELS)
rootservice
Definition
The number of rootservice error logs on an OBServer node of a cluster within the specified statistical range.
Description
| Metric | Metric name | Unit |
|---|---|---|
| rootservice | rootservice_log_error_count | N/A |
Calculation expression
sum(rate(ob_log_level_count{level="ERROR",logSourceType="rootservice",@LABELS}[@INTERVAL])) by (@GBLABELS)
