Promtail not working in dry-run mode

[aronneagu]

Describe the bug
Running promtail with dry-run arguments expects a client to be configured

To Reproduce
Steps to reproduce the behavior:

1. Installed promtail version 1.4.0
2. Ran cat eventrouter.log | ./promtail -config.file promtail.yaml -dry-run

Expected behavior
Expected to see the log line how it will be passed to loki

Environment:

cat eventrouter.log
{"log":"I0406 15:50:11.766875       1 glogsink.go:42] {\"verb\":\"ADDED\",\"event\":{\"metadata\":{\"name\":\"minikube.16034541d120b660\",\"namespace\":\"default\",\"selfLink\":\"/api/v1/namespaces/default/events/minikube.16034541d120b660\",\"uid\":\"1d128c8b-fb24-4919-9fb1-789057bc0b77\",\"resourceVersion\":\"10931185\",\"creationTimestamp\":\"2020-04-06T15:40:42Z\"},\"involvedObject\":{\"kind\":\"Node\",\"name\":\"minikube\",\"uid\":\"322204d2-2ed6-44e3-b6c6-9e036633abbb\"},\"reason\":\"RegisteredNode\",\"message\":\"Node minikube event: Registered Node minikube in Controller\",\"source\":{\"component\":\"node-controller\"},\"firstTimestamp\":\"2020-04-06T15:40:42Z\",\"lastTimestamp\":\"2020-04-06T15:40:42Z\",\"count\":1,\"type\":\"Normal\",\"eventTime\":null,\"reportingComponent\":\"\",\"reportingInstance\":\"\"}}\n","stream":"stderr","time":"2020-04-06T15:50:11.767013811Z"}

Screenshots, Promtail config, or terminal output

cat event.log |./promtail -config.file promtail.yaml -dry-run
level=error ts=2020-04-06T16:17:13.377462255Z caller=main.go:63 msg="error creating promtail" error="at least one client config should be provided"
cat promtail.yaml
scrape_configs:
- job_name: test-job
  pipeline_stages:
    - docker: {}

I took the instructions from the releases page, for v 1.4.0, but maybe I am missing something. I would have expected promtail to just parse the input and output what would be fed to loki, but without actually configuring any loki clients

[cyriltovena]

You need at least an url for dry-run

try

cat event.log | ./promtail --config.file=promtail.yaml --dry-run --client.url=http://foo/

Are you using linux ? if so careful with the issue below.

#1892

I think @slim-bean will release a 1.4.1

[aronneagu]

Yes, I am using Linux. I have tried adding in a -client.url localhost:8080 (with netcat listening on that port) but no luck. I will try on Windows and report back.
By the way, do the cli arguments need one
dash or two dashes? promtail - h shows args with one dash

[cyriltovena]

You don’t need netcat, the url is just there to show you to which server it will send, but won’t send anything. Single dash should work, it won’t work on windows either we need to give you a new binary there’s a bug in 1.4.0 which will be fixed in 1.4.1 today or tomorrow. Le lun. 6 avr. 2020 à 12:35, aronneagu <[email protected]> a écrit :

…

Yes, I am using Linux. I have tried adding in a -client.url localhost:8080 (with netcat listening on that port) but no luck. I will try on Windows and report back. By the way, do the cli arguments need one dash or two dashes? promtail - h shows args with one dash — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#1900 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAIBF3ILB3UG35OM4MYPVJDRLIAGZANCNFSM4MCNHF3Q> .

[aronneagu]

Awesome, looking forward for the new release. Thanks for the lightning fast replies

You are doing an amazing work with loki and promtail.