Promtail configuration failed parsing with unmarshal errors.

[viktorisacenko]

Describe the bug
Get unmarshall errors when i try to start promtail with config file.

To Reproduce
Steps to reproduce the behavior:

1. cd /usr/local/bin
2. sudo curl -fSL -o promtail.gz "https://github.com/grafana/loki/releases/download/v2.0.0/promtail-linux-amd64.zip"
3. sudo gunzip promtail.gz
4. sudo chmod a+x promtail
5. sudo nano config-promtail.yml

->

server:
  http_listen_port: 9080
  grpc_listen_port: 0

positions:
  filename: /tmp/positions.yaml

clients:
  - url: http://localhost:3100/loki/api/v1/push

scrape_configs:
  - job_name: journal
    journal:
      max_age: 12h
      labels:
        job: systemd-journal
    relabel_configs:
      - source_labels: ['__journal__systemd_unit']
        target_label: 'unit'

6. sudo ./promtail -config.file ./config-promtail.yml

->

failed parsing config: ./config-promtail.yml: yaml: unmarshal errors:
  line 5: field positions not found in type main.Config
  line 8: field clients not found in type main.Config
  line 11: field scrape_configs not found in type main.Config

Environment:

• Ubuntu 18.04.5 LTS

[stale]

This issue has been automatically marked as stale because it has not had any activity in the past 30 days. It will be closed in 7 days if no further activity occurs. Thank you for your contributions.

[SimingLiu]

maybe you‘v use the ./loki -config.file ./config-promtail.yml instead of ./promtail -config.file ./config-promtail.yml, in some mistake