rabbitmq_queue_messages_total is not sent to prometheus, while other metrics - are sent

[M1ha-Shvn]

Hi.
I have a strange issue when some of the metrics are absent in prometheus, and some - are not.
I have rabbitmq_queue_messages, rabbitmq_queue_messages_ack_total, rabbitmq_queue_messages_published_total.
But rabbitmq_queue_messages_total does not return anything

I see some warnings in /var/log/syslog:

Jun 21 06:39:35 us-srv-mq-node-01 rabbitmq_exporter[554480]: time="2022-06-21T06:39:35Z" level=warning msg="error parsing idle since time" error="parsing time \"2022-06-21T06:39:16.767+00:00\" as \"2006-01-02 15:04:05\": cannot parse \"T06:39:16.767+00:00\" as \" \"" idle_since="2022-06-21T06:39:16.767+00:00"
Jun 21 06:39:35 us-srv-mq-node-01 rabbitmq_exporter[554480]: time="2022-06-21T06:39:35Z" level=warning msg="error parsing idle since time" error="parsing time \"2022-06-21T06:39:02.687+00:00\" as \"2006-01-02 15:04:05\": cannot parse \"T06:39:02.687+00:00\" as \" \"" idle_since="2022-06-21T06:39:02.687+00:00"
Jun 21 06:39:35 us-srv-mq-node-01 rabbitmq_exporter[554480]: time="2022-06-21T06:39:35Z" level=info msg="Metrics updated" duration=232.092177ms

Erlang version: 1:24.3.3-1
RabbitMQ version: 3.10.5-1
rabbitm_exporter version: 1.0.0-RC16

[kbudde]

Hey @M1ha-Shvn there is no metric "rabbitmq_queue_messages_total" in this exporter.

PS: I've seen the warning about the timestamp for idle_since metric. This was fixed.

[M1ha-Shvn]

Hmm... has it ever existed? I have RabbitMQ 3.7.17 on the other cluster with rabbitmq_exporter 0.29.0 And this metric is present in prometheus results 🤔

[kbudde]

Oh, yes you are right. The metric was there in this old version.
It was replaced by rabbitmq_queue_messages_global.
The _total suffix is reserved for counter metrics in prometheus. Therefore it was changed.