alertmanager设置不告警时间段为2-5点，请给出具体alertmanager.yml配置

好的，以下是一个简单的 alertmanager.yml 配置，其中包括了不告警时间段为每天的 2 点到 5 点：

global:
  # ...
route:
  # ...
  group_by: ['alertname']
  # ...
  receivers:
  # ...
receivers:
  # ...
inhibit_rules:
  # ...
  # Define a time range for non-alerting period
  - source_match:
      severity: 'critical'
    target_match:
      severity: 'warning'
    equal: ['alertname', 'dev', 'instance']
    # This time range specifies the non-alerting period
    # in the format of "start time - end time"
    # The timezone is set to "Local" by default
    # Adjust this according to your timezone if necessary
    # Here, the non-alerting period is from 02:00 to 05:00
    # every day
    time_range: '02:00-05:00'

请注意，这只是一个简单的示例配置，实际的配置可能会因为环境的不同而有所差异。此外，还需要根据实际情况调整其他配置参数，例如 `global`、`route`、`receivers` 和 `inhibit_rules` 等。