Ability to change metrics URL in docker container

[gr8routdoors]

Feature or Problem Description

My organization uses a different URL than the default /metrics specified in the Micrometer spec. I see that the quarkus-micrometer-registry-prometheus extension supports the quarkus.micrometer.export.prometheus.path property for changing the URL in its config reference, but I've tried settings this directly as an environment variable and a property in a JAVA_OPTIONS environment variable for the docker container with no luck.

Proposed Solution

I'm probably missing something obvious (maybe this exists already), but ideally, all quarkus properties are overrideable by environment variables in the docker container - as this is the most ubiquitous way to configure containers of any type.

Additional Context

It looks like another usage of JAVA_OPTIONS was discussed in this previous issue. However, I couldn't understand the resolution for the docker image without the k8s operator. I did try mounting a config volume including an application.properties under /home/jboss as described in the issue, but it wasn't picked up by the application. (I got /home/jboss as the PWD from this dockerfile.)

Digging through more issues I didn't see the aforementioned quarkus property listed in this output from the property configuration documentation issue, so I began to wonder if this was even configurable.

[apicurio-bot[bot]]

Thank you for reporting an issue!

Pinging @jsenko to respond or triage.

[gr8routdoors]

I just tried extending the docker image to explicitly set JAVA_OPTS that includes the property and no luck. I don't see this getting set explicitly anywhere in the project so I'm a bit stumped.

[carlesarnal]

Feature or Problem Description

My organization uses a different URL than the default /metrics specified in the Micrometer spec. I see that the quarkus-micrometer-registry-prometheus extension supports the quarkus.micrometer.export.prometheus.path property for changing the URL in its config reference, but I've tried settings this directly as an environment variable and a property in a JAVA_OPTIONS environment variable for the docker container with no luck.

Proposed Solution

I'm probably missing something obvious (maybe this exists already), but ideally, all quarkus properties are overrideable by environment variables in the docker container - as this is the most ubiquitous way to configure containers of any type.

Additional Context

It looks like another usage of JAVA_OPTIONS was discussed in this previous issue. However, I couldn't understand the resolution for the docker image without the k8s operator. I did try mounting a config volume including an application.properties under /home/jboss as described in the issue, but it wasn't picked up by the application. (I got /home/jboss as the PWD from this dockerfile.)

Digging through more issues I didn't see the aforementioned quarkus property listed in this output from the property configuration documentation issue, so I began to wonder if this was even configurable.

I just tried extending the docker image to explicitly set JAVA_OPTS that includes the property and no luck. I don't see this getting set explicitly anywhere in the project so I'm a bit stumped.

None of the approaches you tried is going to work for this property in particular. The issue is basically that the property you're trying to modify is a build time property and cannot be modified at runtime. To be able to change it you would need your own build of the application. If you take a look at the documentation you can see that there is a lock close to the property.

[gr8routdoors]

Got it. Thanks for the response.