Default Parameters for RabMQVHostTest

This test tracks the messages published to and delivered by each of the virtual hosts the configured user (i.e., the user configured for this test)has access to. Furthermore, the test measures the rate at which each virtual host processes the messages, and thus reveals bottlenecks (if any) in message processing. Additionally, the test also reports the level of I/O activity on the cluster disks, and reveals the count of unacknowledged and redelivered messages. This will enable administrators to assess the impact of IOPS and messages on the performance of the virtual host. This way, the test helps administrators gauge the current workload on each virtual host, understand the present processing power of every virtual host, and identify those virtual hosts that could be experiencing processing bottlenecks. Pointers provided by the test can also be used to figure out how the virtual host configuration can be fine-tuned to ensure optimal performance.

This page depicts the default parameters that need to be configured for the RabMQVHostTest test.

• The TEST PERIOD list box helps the user to decide how often this test needs to be executed.

• The eG agent connects to the Management Interface of the rabbitmq-management plugin of the target node, and runs HTTP-based API commands on the node using the plugin to pull metrics of interest. To connect to the plugin and run the API commands, the eG agent requires the privileges of a user on the cluster who has been assigned the ‘monitoring’ tag. If such a user pre-exists, then configure this test with the USERNAME and PASSWORD of that user. On the other hand, if no such user exists, then you will have to create a user for this purpose using the Management Interface. The steps for this have been detailed in Monitoring RabbitMQ Cluster document. In this case, make sure you configure this test with the USERNAME and PASSWORD of the new user. Finally, confirm the password by retyping it in the CONFIRM PASSWORD text box.

• By default, the SSL flag is set to No, as the target node is not SSL-enabled by default. If the node is SSL-enabled, then set this flag to Yes.

• Once the above values are provided, click on the UPDATE button to register the changes made.

When changing default configurations of tests, the values with “$” indicate variables that will be replaced by the eG system according to the specific server being managed - for instance, $hostName is the host/nickname of the target host, $port is the port number of the server being monitored. E.g., for a server xyz:80, $hostName will be changed automatically by the eG manager to “xyz*” and $port will be changed to “80” when configuring a test.