[Docker For Mac] No Data about prometheus

[carltonmason]

I removed the / volume and restarted everything, its been running for over 5 minutes now just fine. Looks like its not needed after all!

[vegasbrianc]

Hello @llitfkitfk is your data source configured and test connection? Also can you try to do a manual query on one of the graphs?

Let me know.

[vegasbrianc]

Hello @llitfkitfk Let me know the current status so I can help you. Please let me know how if you performed test connection and if manual queries work.

[llitfkitfk]

1. docker-compose up -d
   
2. add data source
   
3. import
   
4. save & open
   

[vegasbrianc]

Hmm strange @llitfkitfk Are you able to run manual queries?

[haimoura]

@llitfkitfk Please check the date, change it to Jul 18 for example.

[vegasbrianc]

Good catch @haimoura I believe @llitfkitfk needs to adjust the date of Grafan

[Krylon360]

Change time range to Last 6 Hours, then verify that the data source on each panel is pointing to the correct data source. Also make sure you can actually pull up http://prometheus:9090 in your browser.

[vegasbrianc]

Closing this issue as I believe this was a time/date setting in the dashboard. Let me know otherwise I open it back up. Thx.

[llitfkitfk]

Thanks, It works!

[carltonmason]

I'm having a similar problem as llitfkitfk on a Mac and followed the above directions:
adjusting the grafana date/time range to the last 3 hours, verified each panel is referring to the correct data source, verified the data source, and also changed the docker-compose.yml to change the Prometheus service to ports 9090:9090 and verified I can hit http://localhost:9090/metrics. I get some partial data but not all for some reason.

[llitfkitfk]

@ckmason Have you add File shareing in docker for mac？

[carltonmason]

@llitfkitfk I see this, it looks like your screen shot. I have not explicitly shared anything though. Are these directories automatically shared with Docker for mac?

[llitfkitfk]

because cadvisor use

volumes:
      - /:/rootfs:ro

I add / to file sharing

Can you screen shot the cadvisor logs?

[carltonmason]

Hey @llitfkitfk , thanks for the hint. I was not able to share / with docker from my Mac but, I was able to update the docker-compose.yml like so and got it to work:
volumes:
- /tmp/cadivsorrootfs:/rootfs:ro
Thank you!

[philicious]

@ckmason I think thats not going to work. / is mounted to /rootfs ro = read-only. so cadvisor wants to read things there. If you mount a random (empty) folder, cadvisor will fail to read whatever it expects to be there

[llitfkitfk]

@philicious agree

[carltonmason]

Hello @llitfkitfk and @vegasbrianc , I had it working when I did share - /tmp/cadivsorrootfs:/rootfs:ro as I mentioned above -- it worked for awhile anyway and then it all just disappeared. Here is a screenshot:

I've not got it to work since then.

If I try to share / with Docker, I get the following error below. So, how do I share / with Docker on a Mac:

Thanks guys!

[vegasbrianc]

@llitfkitfk Is this fixed now?

[carltonmason]

@vegasbrianc @philicious I was not able to share the / dir with Docker due to the error above (probably because I don't know what I am doing).

I did export - /tmp/cadivsorrootfs:/rootfs:ro for cadvisor in the docker-compose.yml file to work around, and it seems to be working.

It's been running for about 8 hours now... I too was surprised that the /tmp/cadivsorrootfs:/rootfs:ro would work but, it seems to.

Why would cadvisor need to read from the / dir anyway?

Thanks.

[philicious]

@ckmason cc @vegasbrianc actually I dont know why / should be shared. I just checked some other sources and they dont have that / volume. only the other three.

so imho, that / volume could be removed entirely. @ckmason would you mind trying ?

[carltonmason]

Sure, I'll give it a whirl! Standby..

[llitfkitfk]

@vegasbrianc
It works find on my mac and vps.

For the problem described by @ckmason ,I asked Docker for Mac Forum https://forums.docker.com/t/file-sharing-problem/19124

[vegasbrianc]

I'm running this on Docker for Mac and have never required doing anything within file sharing.

[carltonmason]

Hi, maybe different docker versions?

Carltons-MacBook-Pro:prometheus ckmason$ docker --version
Docker version 1.12.0-rc4, build e4a0dbc, experimental
Carltons-MacBook-Pro:prometheus ckmason$ docker-compose --version
docker-compose version 1.8.0-rc2, build c72c966

[vegasbrianc]

Hi @ckmason I'm running the same exact versions as Docker for Mac is auto updated with the latest versions. Did you upgrade from Docker Toolbox?

I would recommend uninstalling Docker for Mac and reinstalling as maybe a previous version is conflicting somewhere.

[carltonmason]

Hi @vegasbrianc, I think I am OK. Since there is no need to share the local / with Docker since it is unnecessary for cadvisor (and I have removed it from my local copy of the docker-compose.yml), then I don't have a file sharing problem.

Since, this line (- /:/rootfs:ro) in the volumes section of the cadvisor service in the docker-compose.yml is unnecessary, perhaps it should be removed from this project.

Thank you folks for putting this Prometheus Docker monitoring stack together, it saved me a lot of time.

[llitfkitfk]

@ckmason Cheers! And you can also tryout the new feature: alertmananger