• https://grafana.com/docs/loki/latest/send-data/otel/otel-collector-getting-started/

$ wget https://github.com/open-telemetry/opentelemetry-collector-releases/releases/download/v0.162.0/otelcol-contrib_0.162.0_linux_amd64.deb

# dpkg -i otelcol-contrib_0.162.0_linux_amd64.deb

• Сервис rsyslog
• Поиск важных событий в syslog (Вариант 1)

# usermod -aG adm otelcol-contrib

# cat /etc/otelcol-contrib/config.yaml

receivers:
  filelog/system:
    include:
      - /var/log/*.log
    start_at: end
    resource:
      service.name: system-logs

  filelog/roundcube:
    include:
      - /var/log/roundcube/*.log
    start_at: end
    resource:
      service.name: roundcube-mail

processors:
  batch:
  filter/exclude_unimportant:
    error_mode: ignore
    logs:
      log_record:
        - 'IsMatch(body, "(?i)cron")'

exporters:
  otlphttp/loki:
    endpoint: "http://192.168.13.10:3100/otlp"
    tls:
      insecure: true

service:
  pipelines:
    logs:
      receivers: [filelog/system, filelog/roundcube]
      processors: [filter/exclude_unimportant, batch]
      exporters: [otlphttp/loki]

# otelcol-contrib validate --config /etc/otelcol-contrib/config.yaml