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
    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