by Ayanda Dube
Before you go any further, you should know that you can test WombatOAM out today with a 45 day free trial for WombatOAM 3.0.0beta.
As of version 2.7.0, WombatOAM has three additional RabbitMQ agents that are shipped as part of the main RabbitMQ plugin. These three agents are more specific to the internal elements of RabbitMQ, namely Queues, Channels, and Connections, with each providing finer and more detailed metrics per individually configured and selected metric attribute.
Whereas before, where WombatOAM’s single RabbitMQ plugin would provide an overview of the aggregate metrics, these three additional agents now provide the much desired lower level metric information of the RabbitMQ node being managed. These are illustrated below.
The RabbitMQ Queues agent provides the capabilities of monitoring queues on an individual basis, with the following attributes being configurable, for each queue.
messages
messages_ready
messages_unacknowledged
messages_ready_ram
messages_unacknowledged_ram
messages_ram
messages_persistent
message_bytes
message_bytes_ready
message_bytes_unacknowledged
message_bytes_ram
message_bytes_persistent
disk_reads
disk_writes
consumers
memory
By default, the RabbitMQ Queues agent is configured to monitor the total number of messages for each queue existing on the node being monitored. More details on how to configure this agent may be found in the WombatOAM documentation. The following image illustrates this agent in use:
RabbitMQ Queues Plugin message metric illustration
The RabbitMQ Channels agent provides the capabilities of monitoring channels on an individual basis, with the following attributes being configurable, for each captured (alive) channel.
number
reductions
consumer_count
messages_unacknowledged
messages_unconfirmed
messages_uncommitted
acks_uncommitted
prefetch_count
global_prefetch_count
The following image illustrates this agent in use, with the consumer_count
attribute configured for monitoring, for all channels:
RabbitMQ Channels Plugin message metric illustration
The RabbitMQ Connections agent provides the capabilities of monitoring connections on an individual basis, with the following attributes being configurable, for each captured (alive) connection.
frame_max
channel_max
recv_oct
recv_cnt
send_oct
send_cnt
send_pend
channels
The following image illustrates this agent in use, with the channels
attribute configured for monitoring, for all connections:
RabbitMQ Connections Plugin message metric illustration
This blog post is an excerpt from RabbitMQ Operations & Maintenance using WombatOAM by Ayanda Dube. Download the full guide here.
Originally published at www.erlang-solutions.com.