cortex: fails to run without passing a config file

[Lucas Kanashiro]

The squeakywheel/cortex:edge image seems to not work out-of-the-box (without passing a config file):

$ docker run squeakywheel/cortex:edge
Unable to find image 'squeakywheel/cortex:edge' locally
edge: Pulling from squeakywheel/cortex
47dde53750b4: Already exists
0c2689e3f920: Already exists
cc9d18e90faa: Already exists
b028d7b99220: Pull complete
bbbcbdc649f5: Pull complete
fb867d662114: Pull complete
0a37092cb156: Pull complete
Digest: sha256:a27afd67aa8c158271b9da452951900dbeadf5abaa6a5f97fd67da2a07eab826
Status: Downloaded newer image for squeakywheel/cortex:edge
level=info ts=2020-11-11T13:16:39.278531612Z caller=main.go:178 msg="Starting Cortex" version="(version=1.4.0, branch=oci-image, revision=bdb2a5f2)"
level=info ts=2020-11-11T13:16:39.279417269Z caller=modules.go:513 msg="RulerStorage is not configured in single binary mode and will not be started."
level=info ts=2020-11-11T13:16:39.280154716Z caller=server.go:225 http=[::]:80 grpc=[::]:9095 msg="server listening on addresses"
level=error ts=2020-11-11T13:16:39.286918286Z caller=log.go:149 msg="error running cortex" err="schema config file needs to be set\nerror initialising module: store\ngithub.com/cortexproject/cortex/pkg/util/modules.(*Manager).InitModuleServices\n\t/src/cortex/pkg/util/modules/modules.go:89\ngithub.com/cortexproject/cortex/pkg/cortex.(*Cortex).Run\n\t/src/cortex/pkg/cortex/cortex.go:316\nmain.main\n\t/src/cortex/cmd/cortex/main.go:180\nruntime.main\n\t/usr/lib/go-1.14/src/runtime/proc.go:203\nruntime.goexit\n\t/usr/lib/go-1.14/src/runtime/asm_amd64.s:1373"

To make it work I need to run the following command:

$ docker run -v $(PWD)/cortex.yaml:/etc/cortex/cortex.yaml squeakywheel/cortex:edge "--config.file=/etc/cortex/cortex.yaml"

In this case I used this config file:

https://github.com/canonical/server-test-scripts/blob/master/lma-integration/config/cortex.yaml

I believe we should have a better default config for this. Even if the default config does not represent a realistic scenario, we should not let our image fail to run when no config file is passed.

[Sergio Durigan Junior (sergiodj)]

Fixed in b898cbacdc603bcf46d065b494a86542d127f673.