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VictoriaMetrics FAQ

  • -downsampling.period
    • 企业版本下采样
    • 处理超过一定时间的旧数据，例如 30d:5m 表示 30 天前的数据每 5 分钟保留一个点。
  • -dedup.minScrapeInterval
    • 高可用部署必须配合去重，而且去重间隔要等于抓取间隔。

cannot handle more than 4 concurrent inserts during 1m0s​

尝试增加 vmstorage 资源，检查 vmstorage 状态。

too many open files​

  • 调整 Linux 配置

cannot select more than -search.maxSamplesPerQuery​

cannot select more than -search.maxSamplesPerQuery=500000000 samples; possible solutions: increase the -search.maxSamplesPerQuery; reduce time range for the query; use more specific label filters in order to select fewer series
  • 做 downsample
  • 检查 dedup
  • 优化查询
  • 一般增加 rate interval 没用