ManageEngine® Applications Manager


Cassandra DB

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Cassandra DB

Monitored Parameters

Cassandra DB is monitored based on the parameters or the attributes listed below. These attributes provide information about the functioning of the monitors of Cassandra database. You can also configure thresholds to the numerical attributes monitored by the server based on these details.

 

The Availability tab shows the Availability history of the Cassandra database for the past 24 hours or 30 days. The Performance tab shows the Health Status and events for the past 24 hours or 30 days. The List view enables you to perform bulk admin configurations. Click on the individual monitors listed to view the following information:

Monitor Information

This tab displays the basic information like the name of the server, host name and the JMX port where the server is running. Additional parameters like Token, Gossip Active, Load, Generation No, Uptime, DataCenter, Rack Name are also displayed. These are the equivalent of the Nodetool result got using the command 'nodetool.bat/sh -h -p info'

 

Performance

Parameters

Description

Availability and Performance History

Displays the availability and performance history for the last six hours.

CPU Usage Specifies the usage of CPU in percentage.
Memory Utilization Specifies the used, free and total memory of the server in mega bytes
Exceptions Count of various exceptions such as not found, invalid, unavailable, timed out, etc.
Storage Stats Specifies the storage load in GB.
Operation Stats Number of range, read and write operations per second since executor start.
Operation Latency The latency of range, read and write operations since the last time the attribute was read.

 

Pending Tasks

Parameters

Description

Commitlog/Compaction- Pending Tasks

Number of Commitlog and Compaction tasks waiting in the queue to be executed.

Commands/Responses- Pending Tasks

Number of Command and Response tasks waiting in the queue to be executed.

Task Statistics of Thread Pools Status of various stages of thread pools like active and pending tasks, completed and blocked tasks are being displayed. These are equivalent of the Nodetool result got using the command 'nodetool.bat/sh -h <hostname> -p <portnumber> tpstats'.

Cluster Stats

Parameters

Description

Cluster Details

Specifies details on live, leaving, moving, joining and unreachable  nodes.

Cluster Node Details Health status and storage load (in GB) of the nodes in the cluster.

Messages

This tab contains the Dropped Message statistics for the different message types.

 

Configurations

This tab contains the configuration values of files that are part of cassandra.yaml config file.

 

See Also

Creating New Monitor - Cassandra DB Server

 


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