Локи не оповещает Alertmanager

Я новичок в Loki и сделал предупреждение в Loki, но я не вижу никаких уведомлений в Alertmanager. Loki работает нормально (сбор журналов), Alertmanager также (получение предупреждений из других источников), но журналы из loki не отправляются в alertmanager.

Конфигурация Локи:

auth_enabled: false

server:
  http_listen_port: 3100

ingester:
  lifecycler:
    address: 127.0.0.1
    ring:
      kvstore:
        store: inmemory
      replication_factor: 1
    final_sleep: 0s
  chunk_idle_period: 1h       # Any chunk not receiving new logs in this time will be flushed
  max_chunk_age: 1h           # All chunks will be flushed when they hit this age, default is 1h
  chunk_target_size: 1048576  # Loki will attempt to build chunks up to 1.5MB, flushing first if chunk_idle_period or max_chunk_age is reached first
  chunk_retain_period: 30s    # Must be greater than index read cache TTL if using an index cache (Default index read cache TTL is 5m)
  max_transfer_retries: 0     # Chunk transfers disabled

schema_config:
  configs:
    - from: 2020-10-24
      store: boltdb-shipper
      object_store: filesystem
      schema: v11
      index:
        prefix: index_
        period: 24h

storage_config:
  boltdb_shipper:
    active_index_directory: /loki/boltdb-shipper-active
    cache_location: /loki/boltdb-shipper-cache
    cache_ttl: 24h         # Can be increased for faster performance over longer query periods, uses more disk space
    shared_store: filesystem
  filesystem:
    directory: /loki/chunks

compactor:
  working_directory: /loki/boltdb-shipper-compactor
  shared_store: filesystem

limits_config:
  reject_old_samples: true
  reject_old_samples_max_age: 168h

chunk_store_config:
  max_look_back_period: 0s

table_manager:
  retention_deletes_enabled: false
  retention_period: 0s

ruler:
  storage:
    type: local
    local:
      directory: etc/loki/rules
  rule_path: /etc/loki/
  alertmanager_url: http://171.11.3.160:9093
  ring:
    kvstore:
      store: inmemory
  enable_api: true

Docker-compose Loki:

 loki:
    image: grafana/loki:2.0.0
    container_name: loki
    ports:
      - "3100:3100"
    volumes:
      - ./loki/etc/local-config.yaml:/etc/loki/local-config.yaml
      - ./loki/etc/rules/rules.yaml:/etc/loki/rules/rules.yaml
    command:
      -  '--config.file=/etc/loki/local-config.yaml'

Правила Локи:

groups:
  - name: rate-alerting
    rules:
    - alert: HighLogRate
      expr: |
           count_over_time(({job="grafana"})[1m]) >=0
      for: 1m

Кто-нибудь знает, в чем проблема?