Prometheus metric parsing formats

Prometheus-formatted metrics are parsed and written to InfluxDB in one of two formats, depending on the scraping tool used:

• Metric version 1
• Metric version 2

Scraping tools and parsing format

Metric version 1

• _time: timestamp
• _measurement: Prometheus metric name (_bucket, _sum, and _count are trimmed from histogram and summary metric names)
• _field: depends on the Prometheus metric type
• Counter: counter
• Gauge: gauge
• Histogram: histogram bucket upper limits, count, sum
• Summary: summary quantiles, count, sum
• _value: Prometheus metric value
• tags: A tag for each Prometheus label (except for histogram bucket upper limits (le) or summary quantiles (quantile)). The label name is the tag key and the label value is the tag value.

Example Prometheus query results

The following are example Prometheus metrics scraped from the InfluxDB OSS 2.x /metrics endpoint:

1. # HELP go_memstats_alloc_bytes_total Total number of bytes allocated, even if freed.
2. # TYPE go_memstats_alloc_bytes_total counter
3. go_memstats_alloc_bytes_total 1.42276424e+09
4. # HELP go_memstats_buck_hash_sys_bytes Number of bytes used by the profiling bucket hash table.
5. # TYPE go_memstats_buck_hash_sys_bytes gauge
6. go_memstats_buck_hash_sys_bytes 5.259247e+06
7. # HELP task_executor_run_latency_seconds Records the latency between the time the run was due to run and the time the task started execution, by task type
8. # TYPE task_executor_run_latency_seconds histogram
9. task_executor_run_latency_seconds_bucket{task_type="system",le="0.25"} 4413
10. task_executor_run_latency_seconds_bucket{task_type="system",le="0.5"} 11901
11. task_executor_run_latency_seconds_bucket{task_type="system",le="1"} 12565
12. task_executor_run_latency_seconds_bucket{task_type="system",le="2.5"} 12823
13. task_executor_run_latency_seconds_bucket{task_type="system",le="5"} 12844
14. task_executor_run_latency_seconds_bucket{task_type="system",le="10"} 12864
15. task_executor_run_latency_seconds_bucket{task_type="system",le="+Inf"} 74429
16. task_executor_run_latency_seconds_sum{task_type="system"} 4.256783538679698e+11
17. task_executor_run_latency_seconds_count{task_type="system"} 74429
18. # HELP task_executor_run_duration The duration in seconds between a run starting and finishing.
19. # TYPE task_executor_run_duration summary
20. task_executor_run_duration{taskID="00xx0Xx0xx00XX0x0",task_type="threshold",quantile="0.5"} 5.178160855
21. task_executor_run_duration{taskID="00xx0Xx0xx00XX0x0",task_type="threshold",quantile="0.9"} 5.178160855
22. task_executor_run_duration{taskID="00xx0Xx0xx00XX0x0",task_type="threshold",quantile="0.99"} 5.178160855
23. task_executor_run_duration_sum{taskID="00xx0Xx0xx00XX0x0",task_type="threshold"} 2121.9758301650004
24. task_executor_run_duration_count{taskID="00xx0Xx0xx00XX0x0",task_type="threshold"} 570

Resulting line protocol

1. go_memstats_alloc_bytes_total counter=1.42276424e+09
2. go_memstats_buck_hash_sys_bytes gauge=5.259247e+06
3. task_executor_run_latency_seconds,task_type=system 0.25=4413,0.5=11901,1=12565,2.5=12823,5=12844,10=12864,+Inf=74429,sum=4.256783538679698e+11,count=74429
4. task_executor_run_duration,taskID=00xx0Xx0xx00XX0x0,task_type=threshold 0.5=5.178160855,0.9=5.178160855,0.99=5.178160855,sum=2121.9758301650004,count=570

View version 1 tables when queried from InfluxDB

Metrics version 2

• _time: timestamp
• _measurement: prometheus
• _field: Prometheus metric name (_bucket is trimmed from histogram metric names)
• _value: Prometheus metric value
• url: URL metrics were scraped from
• tags: A tag for each Prometheus label. The label name is the tag key and the label value is the tag value.

Example Prometheus query results

The following are example Prometheus metrics scraped from the InfluxDB OSS 2.x /metrics endpoint:

1. # HELP go_memstats_alloc_bytes_total Total number of bytes allocated, even if freed.
2. # TYPE go_memstats_alloc_bytes_total counter
3. go_memstats_alloc_bytes_total 1.42276424e+09
4. # HELP go_memstats_buck_hash_sys_bytes Number of bytes used by the profiling bucket hash table.
5. # TYPE go_memstats_buck_hash_sys_bytes gauge
6. go_memstats_buck_hash_sys_bytes 5.259247e+06
7. # HELP task_executor_run_latency_seconds Records the latency between the time the run was due to run and the time the task started execution, by task type
8. # TYPE task_executor_run_latency_seconds histogram
9. task_executor_run_latency_seconds_bucket{task_type="system",le="0.25"} 4413
10. task_executor_run_latency_seconds_bucket{task_type="system",le="0.5"} 11901
11. task_executor_run_latency_seconds_bucket{task_type="system",le="1"} 12565
12. task_executor_run_latency_seconds_bucket{task_type="system",le="2.5"} 12823
13. task_executor_run_latency_seconds_bucket{task_type="system",le="5"} 12844
14. task_executor_run_latency_seconds_bucket{task_type="system",le="10"} 12864
15. task_executor_run_latency_seconds_bucket{task_type="system",le="+Inf"} 74429
16. task_executor_run_latency_seconds_sum{task_type="system"} 4.256783538679698e+11
17. task_executor_run_latency_seconds_count{task_type="system"} 74429
18. # HELP task_executor_run_duration The duration in seconds between a run starting and finishing.
19. # TYPE task_executor_run_duration summary
20. task_executor_run_duration{taskID="00xx0Xx0xx00XX0x0",task_type="threshold",quantile="0.5"} 5.178160855
21. task_executor_run_duration{taskID="00xx0Xx0xx00XX0x0",task_type="threshold",quantile="0.9"} 5.178160855
22. task_executor_run_duration{taskID="00xx0Xx0xx00XX0x0",task_type="threshold",quantile="0.99"} 5.178160855
23. task_executor_run_duration_sum{taskID="00xx0Xx0xx00XX0x0",task_type="threshold"} 2121.9758301650004
24. task_executor_run_duration_count{taskID="00xx0Xx0xx00XX0x0",task_type="threshold"} 570

Resulting line protocol

1. prometheus,url=http://localhost:8086/metrics go_memstats_alloc_bytes_total=1.42276424e+09
2. prometheus,url=http://localhost:8086/metrics go_memstats_buck_hash_sys_bytes=5.259247e+06
3. prometheus,url=http://localhost:8086/metrics,task_type=system,le=0.25 task_executor_run_latency_seconds=4413
4. prometheus,url=http://localhost:8086/metrics,task_type=system,le=0.5 task_executor_run_latency_seconds=11901
5. prometheus,url=http://localhost:8086/metrics,task_type=system,le=1 task_executor_run_latency_seconds=12565
6. prometheus,url=http://localhost:8086/metrics,task_type=system,le=2.5 task_executor_run_latency_seconds=12823
7. prometheus,url=http://localhost:8086/metrics,task_type=system,le=5 task_executor_run_latency_seconds=12844
8. prometheus,url=http://localhost:8086/metrics,task_type=system,le=10 task_executor_run_latency_seconds=12864
9. prometheus,url=http://localhost:8086/metrics,task_type=system,le=+Inf task_executor_run_latency_seconds=74429
10. prometheus,url=http://localhost:8086/metrics,task_type=system task_executor_run_latency_seconds_sum=4.256783538679698e+11
11. prometheus,url=http://localhost:8086/metrics,task_type=system task_executor_run_latency_seconds_count=74429
12. prometheus,url=http://localhost:8086/metrics,taskID=00xx0Xx0xx00XX0x0,task_type=threshold quantile=0.5 task_executor_run_duration=5.178160855
13. prometheus,url=http://localhost:8086/metrics,taskID=00xx0Xx0xx00XX0x0,task_type=threshold quantile=0.9 task_executor_run_duration=5.178160855
14. prometheus,url=http://localhost:8086/metrics,taskID=00xx0Xx0xx00XX0x0,task_type=threshold quantile=0.99 task_executor_run_duration=5.178160855
15. prometheus,url=http://localhost:8086/metrics,taskID=00xx0Xx0xx00XX0x0,task_type=threshold task_executor_run_duration_sum=2121.9758301650004
16. prometheus,url=http://localhost:8086/metrics,taskID=00xx0Xx0xx00XX0x0,task_type=threshold task_executor_run_duration_count=570

View version 2 tables when queried from InfluxDB

Related

• Prometheus data model
• Scrape Prometheus metrics
• Work with Prometheus in Flux
• Telegraf Prometheus input plugin
• Scrape data using InfluxDB scrapers
• prometheus.scrape() function

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