基于云上Prometheus对cassandra监控

最新推荐文章于 2024-09-03 04:25:19 发布

原创

最新推荐文章于 2024-09-03 04:25:19 发布 · 1k 阅读

5 ·

CC 4.0 BY-SA版权

文章标签：

#zookeeper #spark #hadoop

本文详细介绍了如何通过jmx_exporter在Cassandra中设置监控，配置jmxjavaagent和metrics文件，以及如何在Prometheus和Grafana中集成Cassandra数据，包括预警规则实例。

1、概述

针对cassandra的监控，通过jmx_exporter方式暴露数据采集端口，然后通过prometheus定时数据采集，从而实现监控。

2、Agent配置

所有安装cassandra节点都需要进行相同配置；

2.1、下载jmx javaagent

从github下载jmx_prometheus_javaagent-0.16.1.jar安装包，并将
其上传到cassandra集群$CASSANDRA_HOME/lib/目录下。

2.2、配置metrics采集文件

配置文件内容来源于Cassandra dashboard，可以从https://grafana.com/grafana/dashboards 搜索下载5408编号。分别进入cassandra集群节点 conf/ 目录，增加如下配置文件。

vi cassandra-prometheus-jmx.yml
#并将下面内容拷贝到文件内容
lowercaseOutputName: true
lowercaseOutputLabelNames: true
whitelistObjectNames: [
"org.apache.cassandra.metrics:type=ColumnFamily,name=RangeLatency,*",
"org.apache.cassandra.metrics:type=ColumnFamily,name=LiveSSTableCount,*",
"org.apache.cassandra.metrics:type=ColumnFamily,name=SSTablesPerReadHistogram,*",
"org.apache.cassandra.metrics:type=ColumnFamily,name=SpeculativeRetries,*",
"org.apache.cassandra.metrics:type=ColumnFamily,name=MemtableOnHeapSize,*",
"org.apache.cassandra.metrics:type=ColumnFamily,name=MemtableSwitchCount,*",
"org.apache.cassandra.metrics:type=ColumnFamily,name=MemtableLiveDataSize,*",
"org.apache.cassandra.metrics:type=ColumnFamily,name=MemtableColumnsCount,*",
"org.apache.cassandra.metrics:type=ColumnFamily,name=MemtableOffHeapSize,*",
"org.apache.cassandra.metrics:type=ColumnFamily,name=BloomFilterFalsePositives,*",
"org.apache.cassandra.metrics:type=ColumnFamily,name=BloomFilterFalseRatio,*",
"org.apache.cassandra.metrics:type=ColumnFamily,name=BloomFilterDiskSpaceUsed,*",
"org.apache.cassandra.metrics:type=ColumnFamily,name=BloomFilterOffHeapMemoryUsed,*",
"org.apache.cassandra.metrics:type=ColumnFamily,name=SnapshotsSize,*",
"org.apache.cassandra.metrics:type=ColumnFamily,name=TotalDiskSpaceUsed,*",
"org.apache.cassandra.metrics:type=CQL,name=RegularStatementsExecuted,*",
"org.apache.cassandra.metrics:type=CQL,name=PreparedStatementsExecuted,*",
"org.apache.cassandra.metrics:type=Compaction,name=PendingTasks,*",
"org.apache.cassandra.metrics:type=Compaction,name=CompletedTasks,*",
"org.apache.cassandra.metrics:type=Compaction,name=BytesCompacted,*",
"org.apache.cassandra.metrics:type=Compaction,name=TotalCompactionsCompleted,*",