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158 lines
6.1 KiB
Markdown
158 lines
6.1 KiB
Markdown
---
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title: apache-solr
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---
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## Overview
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{{< panel style="danger" >}}
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Jsonnet source code is available at [github.com/grafana/jsonnet-libs](https://github.com/grafana/jsonnet-libs/tree/master/apache-solr-mixin)
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{{< /panel >}}
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## Alerts
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{{< panel style="warning" >}}
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Complete list of pregenerated alerts is available [here](https://github.com/monitoring-mixins/website/blob/master/assets/apache-solr/alerts.yaml).
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{{< /panel >}}
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### apache-solr
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##### ApacheSolrZookeeperChangeInEnsembleSize
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{{< code lang="yaml" >}}
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alert: ApacheSolrZookeeperChangeInEnsembleSize
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annotations:
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description: Zookeeper host {{$labels.zk_host}} has had an ensemble change of {{
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printf "%.0f" $value }} over the last 5 minutes
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summary: Changes in the ZooKeeper ensemble size can affect the stability and performance
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of the cluster.
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expr: |
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changes(solr_zookeeper_ensemble_size[5m]) > 0
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for: 5m
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labels:
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severity: warning
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{{< /code >}}
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##### ApacheSolrHighCPUUsageCritical
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{{< code lang="yaml" >}}
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alert: ApacheSolrHighCPUUsageCritical
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annotations:
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description: '{{$labels.instance}} on cluster {{$labels.solr_cluster}} has had a
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system CPU load of {{ printf "%.0f" $value }}%, which is above the threshold of
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85.'
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summary: High CPU load can indicate that Solr nodes are under heavy load, potentially
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impacting performance.
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expr: |
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100 * sum without (base_url, item) (avg_over_time(solr_metrics_jvm_os_cpu_load{item="systemCpuLoad"}[5m])) > 85
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for: 5m
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labels:
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severity: critical
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{{< /code >}}
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##### ApacheSolrHighCPUUsageWarning
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{{< code lang="yaml" >}}
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alert: ApacheSolrHighCPUUsageWarning
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annotations:
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description: '{{$labels.instance}} on cluster {{$labels.solr_cluster}} has had a
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system CPU load of {{ printf "%.0f" $value }}%, which is above the threshold of
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75.'
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summary: High CPU load can indicate that Solr nodes are under heavy load, potentially
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impacting performance.
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expr: |
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100 * sum without (base_url, item) (avg_over_time(solr_metrics_jvm_os_cpu_load{item="systemCpuLoad"}[5m])) > 75
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for: 5m
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labels:
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severity: warning
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{{< /code >}}
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##### ApacheSolrHighHeapMemoryUsageCritical
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{{< code lang="yaml" >}}
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alert: ApacheSolrHighHeapMemoryUsageCritical
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annotations:
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description: |
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{{$labels.instance}} on cluster {{$labels.solr_cluster}} has had high memory usage of {{ printf "%.0f" $value }}%, which is above the thresold of 75.
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summary: High heap memory usage can lead to garbage collection issues, out-of-memory
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errors, and overall system instability.
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expr: |
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100 * sum without(item, base_url)(solr_metrics_jvm_memory_heap_bytes{item="used"}) / clamp_min(sum without(item, base_url)(solr_metrics_jvm_memory_heap_bytes{item="max"}), 1) > 75
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for: 5m
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labels:
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severity: critical
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{{< /code >}}
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##### ApacheSolrHighHeapMemoryUsageWarning
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{{< code lang="yaml" >}}
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alert: ApacheSolrHighHeapMemoryUsageWarning
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annotations:
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description: |
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{{$labels.instance}} on cluster {{$labels.solr_cluster}} has had high memory usage of {{ printf "%.0f" $value }}%, which is above the thresold of 85.
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summary: High heap memory usage can lead to garbage collection issues, out-of-memory
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errors, and overall system instability.
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expr: |
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100 * sum without(item, base_url)(solr_metrics_jvm_memory_heap_bytes{item="used"}) / clamp_min(sum without(item, base_url)(solr_metrics_jvm_memory_heap_bytes{item="max"}), 1) > 85
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for: 5m
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labels:
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severity: warning
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{{< /code >}}
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##### ApacheSolrLowCacheHitRatio
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{{< code lang="yaml" >}}
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alert: ApacheSolrLowCacheHitRatio
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annotations:
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description: |
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{{$labels.instance}} on cluster {{$labels.solr_cluster}} has had a low cache hit ratio of {{ printf "%.0f" $value }}% on core {{$labels.core}} of type {{$labels.type}}, which is under the threshold of 75.
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summary: Low cache hit ratios can lead to increased disk I/O and slower query response
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times.
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expr: |
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100 * sum without(base_url, category, collection, item, replica, shard) (solr_metrics_core_searcher_cache_ratio{item="hitratio", type=~"documentCache|filterCache|queryResultCache"}) < 75
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for: 10m
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labels:
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severity: warning
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{{< /code >}}
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##### ApacheSolrHighCoreErrors
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{{< code lang="yaml" >}}
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alert: ApacheSolrHighCoreErrors
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annotations:
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description: |
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{{$labels.instance}} on cluster {{$labels.solr_cluster}} has had a high amount of core errors {{ printf "%.0f" $value }}% on core {{$labels.core}}, which is above the threshold of 15.
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summary: A spike in core errors can indicate serious issues at the core level, affecting
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data integrity and availability.
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expr: |
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100 * sum without(base_url, category, collection, handler, replica, shard) (increase(solr_metrics_core_errors_total[10m]) / clamp_min(avg_over_time(solr_metrics_core_errors_total[10m]), 1)) > 15
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for: 10m
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labels:
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severity: warning
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{{< /code >}}
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##### ApacheSolrHighDocumentIndexing
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{{< code lang="yaml" >}}
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alert: ApacheSolrHighDocumentIndexing
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annotations:
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description: |
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{{$labels.instance}} on cluster {{$labels.solr_cluster}} has had a high document indexing value of {{ printf "%.0f" $value }}% on core {{$labels.core}}, which is above the threshold of 30.
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summary: A sudden spike in document indexing could indicate unintended or malicious
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bulk updates.
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expr: |
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100 * sum without(base_url, category, collection, handler, replica, shard) (increase(solr_metrics_core_update_handler_adds_total[15m]) / clamp_min(avg_over_time(solr_metrics_core_update_handler_adds_total[15m]), 1)) > 30
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for: 15m
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labels:
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severity: warning
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{{< /code >}}
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## Dashboards
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Following dashboards are generated from mixins and hosted on github:
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- [apache-solr-cluster-overview](https://github.com/monitoring-mixins/website/blob/master/assets/apache-solr/dashboards/apache-solr-cluster-overview.json)
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- [apache-solr-logs-overview](https://github.com/monitoring-mixins/website/blob/master/assets/apache-solr/dashboards/apache-solr-logs-overview.json)
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- [apache-solr-query-performance](https://github.com/monitoring-mixins/website/blob/master/assets/apache-solr/dashboards/apache-solr-query-performance.json)
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- [apache-solr-resource-monitoring](https://github.com/monitoring-mixins/website/blob/master/assets/apache-solr/dashboards/apache-solr-resource-monitoring.json)
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