apiVersion: operator.victoriametrics.com/v1beta1
kind: VMRule
metadata:
  name: kafka-exporter-yc-rules
  namespace: vmstack
spec:
  groups:
    - name: kafka-exporter-yc.rules
      interval: 5m
      rules:
        - alert: KafkaExporterYcDown
          expr: absent(up{kafka_instance="yc-kafka", cluster="brusnika-prod"} == 1)
          for: 10m
          labels:
            severity: critical
            team: infra
            cluster: brusnika-prod
            kafka_instance: yc-kafka
            source_cluster: yc-kafka
          annotations:
            summary: YC Kafka exporter is down in brusnika-prod
            description: No healthy kafka-exporter-yc target is scraped for 10 minutes.
        - alert: KafkaTopicNoMessagesFor12h
          expr: |
            (
              sum by (topic, kafka_instance, source_cluster, cluster) (
                max_over_time(kafka_topic_partition_current_offset{kafka_instance="yc-kafka", cluster="brusnika-prod", topic=~"^(prod|system_log)$"}[12h])
                -
                min_over_time(kafka_topic_partition_current_offset{kafka_instance="yc-kafka", cluster="brusnika-prod", topic=~"^(prod|system_log)$"}[12h])
              ) == 0
            )
            and on (topic, kafka_instance, source_cluster, cluster)
            (
              min by (topic, kafka_instance, source_cluster, cluster) (
                count_over_time(kafka_topic_partition_current_offset{kafka_instance="yc-kafka", cluster="brusnika-prod", topic=~"^(prod|system_log)$"}[12h])
              ) >= 1400
            )
            and on (topic, kafka_instance, source_cluster, cluster)
            (
              sum by (topic, kafka_instance, source_cluster, cluster) (
                kafka_topic_partitions{kafka_instance="yc-kafka", cluster="brusnika-prod", topic=~"^(prod|system_log)$"}
              ) > 0
            )
          for: 5m
          labels:
            severity: warning
            team: infra
            cluster: brusnika-prod
            kafka_instance: yc-kafka
            source_cluster: yc-kafka
          annotations:
            summary: No new messages in Kafka topic for 12h
            description: Topic {{ $labels.topic }} in {{ $labels.kafka_instance }} has no offset growth for 12 hours.