Recording rule is different from the recorded expression

[Cplo]

What did you do?
I define the following recording rules:

node_exporter:node_cpu_use:percent{} = 100 * (1 - avg(rate(node_cpu{mode="idle"}[2m])) BY (instance, job))
node_exporter:node_cpu_mode_use:percent{} = 100 * avg(rate(node_cpu[2m])) BY (instance, mode)
node_exporter:node_mem_use:percent{} = 100 * (1 - (node_memory_MemFree + node_memory_Cached + node_memory_Buffers) / (1 + node_memory_MemTotal))
node_exporter:node_disk_use:percent{} = 100 * (1 - node_filesystem_free{device=~"/dev.*",mountpoint!~"/etc.*|/run.*"} / (1 + node_filesystem_size))
node_exporter:node_swapmem_use:percent{} = 100 * (node_memory_SwapTotal - node_memory_SwapFree) / (node_memory_SwapTotal + 1)
node_exporter:node_disk_util:percent{} = irate(node_disk_io_time_ms[2m]) / 10
node_exporter:node_disk_bytes_read{} = irate(node_disk_bytes_read[2m])
node_exporter:node_disk_bytes_write{} = irate(node_disk_bytes_written[2m])
node_exporter:node_disk_iops_read{} = irate(node_disk_reads_completed[2m])
node_exporter:node_disk_iops_write{} = irate(node_disk_writes_completed[2m])
node_exporter:node_disk_context_switches{} = irate(node_context_switches[2m])
node_exporter:node_network_receive_bytes{} = irate(node_network_receive_bytes[2m])
node_exporter:node_network_transmit_bytes{} = irate(node_network_transmit_bytes[2m])
node_exporter:node_time_diff{} = node_time - scalar(node_time{instance="tosqatest1"})

the metric node_exporter:node_time_diff value never changed，but the expression node_time - scalar(node_time{instance="tosqatest1"}) value normally changed by per job scrape interval (1 minute).

What did you expect to see?
recording rule also change normally.
What did you see instead? Under which circumstances?

Environment

• System information:

  Linux 4.4.73-1.el7.elrepo.x86_64 x86_64

• Prometheus version:
  prometheus, version 1.7.1 (branch: master, revision: 3afb3ff)
  build user: root@0aa1b7fc430d
  build date: 20170612-11:44:05
  go version: go1.8.3

• Prometheus configuration file:

N/A

[brian-brazil]

I don't see anything odd here, query_range executes every 3s here while I presume your recording rule has a 1 minute interval. These are normal artifacts.

[lock]

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