How do I enable metrics?

[azeng528]

Search before asking

• I searched in the issues and found nothing similar.

Read release policy

• I understand that unsupported versions don't get bug fixes. I will attempt to reproduce the issue on a supported version of Pulsar client and Pulsar broker.

Version

pulsar version：3.0.2
|># java -version
java version "17.0.9" 2023-10-17 LTS
|># cat /etc/os-release
NAME="CentOS Linux"
VERSION="7 (Core)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="7"
PRETTY_NAME="CentOS Linux 7 (Core)"

Minimal reproduce step

cluster is ok，However, the topic metrics extracted by the metrics interface are missing，After I restart the brokers and bookies of the entire cluster later, metrics will include the missing topic metrics，for example，before restart，not have the Topic of screenshot

What did you expect to see?

i hope the topic of screenshot is always get metrics，not restart broker and bookie ，then get this metrics

What did you see instead?

no

Anything else?

1

Are you willing to submit a PR?

• I'm willing to submit a PR!

[azeng528]

lose metrics name: pulsar subscribtion backlog

[Shawyeok]

Could you please provide more context here, such as the broker.conf configuration? Have you tried reproducing this issue with the latest 3.0.x version, specifically 3.0.8?