Available CloudWatch metrics for Amazon MQ for RabbitMQ brokers
RabbitMQ broker metrics
| Metric | Unit | Description |
|---|---|---|
ExchangeCount |
Count | The total number of exchanges configured on the broker. |
QueueCount |
Count | The total number of queues configured on the broker. |
ConnectionCount |
Count | The total number of connections established on the broker. |
ChannelCount |
Count | The total number of channels established on the broker. |
ConsumerCount |
Count | The total number of consumers connected to the broker. |
MessageCount |
Count | The total number of messages in the queues.
NoteThe number produced is the total sum of ready and unacknowledged messages on the broker. |
MessageReadyCount |
Count | The total number of ready messages in the queues. |
MessageUnacknowledgedCount |
Count | The total number of unacknowledged messages in the queues. |
PublishRate |
Count | The rate at which messages are published to the broker.
The number produced represents the number of messages per second at the time of sampling. |
ConfirmRate |
Count | The rate at which the RabbitMQ server is confirming published messages. You can compare this metric with PublishRate to better understand
how your broker is performing.
The number produced represents the number of messages per second at the time of sampling. |
AckRate |
Count | The rate at which messages are being acknowledged by consumers.
The number produced represents the number of messages per second at the time of sampling. |
SystemCpuUtilization |
Percent | The percentage of allocated Amazon EC2 compute units that the broker currently uses. For cluster deployments, this value represents the aggregate of all three RabbitMQ nodes' corresponding metric values. |
RabbitMQMemLimit |
Bytes | The RAM limit for a RabbitMQ broker. For cluster deployments, this value represents the aggregate of all three RabbitMQ nodes' corresponding metric values. |
RabbitMQMemUsed |
Bytes | The volume of RAM used by a RabbitMQ broker. For cluster deployments, this value represents the aggregate of all three RabbitMQ nodes' corresponding metric values. |
RabbitMQDiskFreeLimit |
Bytes | The disk limit for a RabbitMQ broker. For cluster deployments, this value represents the aggregate of all three RabbitMQ nodes' corresponding metric values. This metric is different per instance size. For more information about Amazon MQ instance types, see Amazon MQ for RabbitMQ instance types. |
RabbitMQDiskFree |
Bytes | The total volume of free disk space available in a RabbitMQ broker. When disk usage goes above its limit, the cluster will block all producer connections. For cluster deployments, this value represents the aggregate of all three RabbitMQ nodes' corresponding metric values. |
RabbitMQFdUsed |
Count | Number of file descriptors used. For cluster deployments, this value represents the aggregate of all three RabbitMQ nodes' corresponding metric values. |
RabbitMQIOReadAverageTime |
Count | The average time (in milliseconds) for RabbitMQ to perform one read operation. The value is proportional to the message size. |
RabbitMQIOWriteAverageTime |
Count | The average time (in milliseconds) for RabbitMQ to perform one write operation. The value is proportional to the message size. |
Dimensions for RabbitMQ broker metrics
| Dimension | Description |
|---|---|
Broker |
The name of the broker. |
RabbitMQ node metrics
| Metric | Unit | Description |
|---|---|---|
SystemCpuUtilization |
Percent | The percentage of allocated Amazon EC2 compute units that the broker currently uses. |
RabbitMQMemLimit |
Bytes | The RAM limit for a RabbitMQ node. |
RabbitMQMemUsed |
Bytes | The volume of RAM used by a RabbitMQ node. When memory use goes above the limit, the cluster will block all producer connections. |
RabbitMQDiskFreeLimit |
Bytes | The disk limit for a RabbitMQ node. This metric is different per instance size. For more information about Amazon MQ instance types, see Amazon MQ for RabbitMQ instance types. |
RabbitMQDiskFree |
Bytes | The total volume of free disk space available in a RabbitMQ node. When disk usage goes above its limit, the cluster will block all producer connections. |
RabbitMQFdUsed |
Count | Number of file descriptors used. |
Dimensions for RabbitMQ node metrics
| Dimension | Description |
|---|---|
Node |
The name of the node.
NoteA node name consists of two parts: a prefix (usuallly |
Broker |
The name of the broker. |
RabbitMQ queue metrics
| Metric | Unit | Description |
|---|---|---|
ConsumerCount |
Count | The number of consumers subscribed to the queue. |
MessageReadyCount |
Count | The number of messages that are currently available to be delivered. |
MessageUnacknowledgedCount |
Count | The number of messages for which the server is awaiting acknowledgement. |
MessageCount |
Count | The total number of MessageReadyCount and MessageUnacknowledgedCount (also known as
queue depth). |
Dimensions for RabbitMQ queue metrics
Note
Amazon MQ for RabbitMQ will not publish metrics for virtual hosts and queues with names containing blank spaces, tabs or other non-ASCII characters.
For more information about dimension names, see Dimension in the Amazon CloudWatch API Reference.
| Dimension | Description |
|---|---|
Queue |
The name of the queue. |
VirtualHost |
The name of the virtual host. |
Broker |
The name of the broker. |
Configuring Amazon MQ for RabbitMQ logs
When you enable CloudWatch logging for your RabbitMQ brokers, Amazon MQ uses a service-linked role to publish general logs to CloudWatch. If no Amazon MQ service-linked role exists when you first create a broker, Amazon MQ will automatically create one. All subsequent RabbitMQ brokers will use the same service-linked role to publish logs to CloudWatch.
For more information about service-linked roles, see Using service-linked roles in the AWS Identity and Access Management User Guide. For more information about how Amazon MQ uses service-linked roles, see Using service-linked roles for Amazon MQ.
