The configuration values in Dockerfile should be the same as the default values

[chihkaiyu]

This is not a bug.
When I run the Prometheus in docker, it's good and everything works properly.
Then I try to alter some configurations like TSDB data path, retention period, it says it can't load my configuration files (prometheus.yml).
After tracing the code a little bit, I know this is not a bug.
But I think it's much more intuitive if the configuration values in Dockerfile could be the same as default values.

What did you do?
I run a docker container via:
docker run -d --name prometheus -p 9090:9090 prom/prometheus:v2.1.0 --storage.tsdb.retention=90d

What did you expect to see?
I expect that the Prometheus should load the configuration file from /etc/prometheus/prometheus.yml

What did you see instead? Under which circumstances?
err="Error loading config couldn't load configuration (--config.file=prometheus.yml): open prometheus.yml: no such file or directory"

Environment
Docker version: 17.09.0-ce
Distributor ID: Ubuntu
Description: Ubuntu 16.04.3 LTS
Release: 16.04
Codename: xenial

• System information:
  Linux 4.10.0-40-generic x86_64

• Prometheus version:
  v2.1.0

• Logs:

level=info ts=2018-03-30T02:07:54.697323439Z caller=main.go:225 msg="Starting Prometheus" version="(version=2.1.0, branch=HEAD, revision=85f23d82a045d103ea7f3c89a91fba4a93e6367a)"
level=info ts=2018-03-30T02:07:54.697350761Z caller=main.go:226 build_context="(go=go1.9.2, user=root@6e784304d3ff, date=20180119-12:01:23)"
level=info ts=2018-03-30T02:07:54.697361073Z caller=main.go:227 host_details="(Linux 4.10.0-40-generic #44~16.04.1-Ubuntu SMP Thu Nov 9 15:37:44 UTC 2017 x86_64 211662f71a04 (none))"
level=info ts=2018-03-30T02:07:54.697369249Z caller=main.go:228 fd_limits="(soft=1048576, hard=1048576)"
level=info ts=2018-03-30T02:07:54.698844139Z caller=main.go:499 msg="Starting TSDB ..."
level=info ts=2018-03-30T02:07:54.698855713Z caller=web.go:383 component=web msg="Start listening for connections" address=0.0.0.0:9090
level=info ts=2018-03-30T02:07:54.702465846Z caller=main.go:509 msg="TSDB started"
level=info ts=2018-03-30T02:07:54.70249326Z caller=main.go:585 msg="Loading configuration file" filename=prometheus.yml
level=info ts=2018-03-30T02:07:54.702522151Z caller=main.go:386 msg="Stopping scrape discovery manager..."
level=info ts=2018-03-30T02:07:54.702531541Z caller=main.go:400 msg="Stopping notify discovery manager..."
level=info ts=2018-03-30T02:07:54.702538729Z caller=main.go:424 msg="Stopping scrape manager..."
level=info ts=2018-03-30T02:07:54.702578957Z caller=main.go:382 msg="Scrape discovery manager stopped"
level=info ts=2018-03-30T02:07:54.702601063Z caller=manager.go:460 component="rule manager" msg="Stopping rule manager..."
level=info ts=2018-03-30T02:07:54.702594457Z caller=manager.go:59 component="scrape manager" msg="Starting scrape manager..."
level=info ts=2018-03-30T02:07:54.702584062Z caller=main.go:396 msg="Notify discovery manager stopped"
level=info ts=2018-03-30T02:07:54.702616317Z caller=manager.go:466 component="rule manager" msg="Rule manager stopped"
level=info ts=2018-03-30T02:07:54.702619926Z caller=main.go:418 msg="Scrape manager stopped"
level=info ts=2018-03-30T02:07:54.702623801Z caller=notifier.go:493 component=notifier msg="Stopping notification manager..."
level=info ts=2018-03-30T02:07:54.702631386Z caller=main.go:570 msg="Notifier manager stopped"
level=error ts=2018-03-30T02:07:54.702648309Z caller=main.go:579 err="Error loading config couldn't load configuration (--config.file=prometheus.yml): open prometheus.yml: no such file or directory"

[brian-brazil]

This is a Docker usage question, we can't help you with that.

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.