监控InfluxDB服务器
此页面记录了 InfluxDB OSS 的早期版本。InfluxDB OSS v2 是最新的稳定版本。请参阅 InfluxDB v2 文档。
在此页面
InfluxDB 可以显示关于每个节点的统计和诊断信息。 这些信息对于故障排除和性能监控非常有用。
显示统计信息
要查看节点统计信息，请执行命令 SHOW STATS。有关此命令的详细信息，请参阅 SHOW STATS 在 InfluxQL 规范中的内容。
由 SHOW STATS 返回的统计信息仅存储在内存中，并在节点重启时重置为零。
显示诊断信息
要查看节点诊断信息，执行命令 SHOW DIAGNOSTICS。
这将返回如构建信息、运行时间、主机名、服务器配置、内存使用情况和 Go 运行时诊断等信息。
有关此命令的详细信息，请参见 SHOW DIAGNOSTICS 在 InfluxQL 规范中。
内部监控
InfluxDB 还会将统计和诊断信息写入名为 _internal 的数据库，该数据库记录有关内部运行时和服务性能的指标。
_internal 数据库可以像其他 InfluxDB 数据库一样进行查询和操作。
有关更多详细信息，请查看 monitor service README 和 internal monitoring blog post。
有用的性能指标命令
以下是一些命令，用于查找有关您的InfluxDB实例的有用性能指标。
要找到每秒写入实例的点数。必须启用 monitor 服务：
$ influx -execute 'select derivative(pointReq, 1s) from "write" where time > now() - 5m' -database '_internal' -precision 'rfc3339'
要找到自日志文件开始以来按数据库分隔的写入次数：
grep 'POST' /var/log/influxdb/influxd.log | awk '{ print $10 }' | sort | uniq -c
或者，对于使用systemd的系统日志记录到journald：
journalctl -u influxdb.service | awk '/POST/ { print $10 }' | sort | uniq -c
InfluxDB /metrics HTTP 端点
注意： 目前没有待处理的PR用于改进
/metrics端点，但我们会在发生时将其添加到CHANGELOG中。
InfluxDB /metrics 端点被配置为以 Prometheus 指标格式生成默认的 Go 指标。
使用 InfluxDB `/metrics` 端点的示例
下面是使用 /metrics 端点生成的输出示例。请注意，HELP 可用来解释 Go 统计信息。
# HELP go_gc_duration_seconds A summary of the GC invocation durations.
# TYPE go_gc_duration_seconds summary
go_gc_duration_seconds{quantile="0"} 6.4134e-05
go_gc_duration_seconds{quantile="0.25"} 8.8391e-05
go_gc_duration_seconds{quantile="0.5"} 0.000131335
go_gc_duration_seconds{quantile="0.75"} 0.000169204
go_gc_duration_seconds{quantile="1"} 0.000544705
go_gc_duration_seconds_sum 0.004619405
go_gc_duration_seconds_count 27
# HELP go_goroutines Number of goroutines that currently exist.
# TYPE go_goroutines gauge
go_goroutines 29
# HELP go_info Information about the Go environment.
# TYPE go_info gauge
go_info{version="go1.10"} 1
# HELP go_memstats_alloc_bytes Number of bytes allocated and still in use.
# TYPE go_memstats_alloc_bytes gauge
go_memstats_alloc_bytes 1.581062048e+09
# HELP go_memstats_alloc_bytes_total Total number of bytes allocated, even if freed.
# TYPE go_memstats_alloc_bytes_total counter
go_memstats_alloc_bytes_total 2.808293616e+09
# HELP go_memstats_buck_hash_sys_bytes Number of bytes used by the profiling bucket hash table.
# TYPE go_memstats_buck_hash_sys_bytes gauge
go_memstats_buck_hash_sys_bytes 1.494326e+06
# HELP go_memstats_frees_total Total number of frees.
# TYPE go_memstats_frees_total counter
go_memstats_frees_total 1.1279913e+07
# HELP go_memstats_gc_cpu_fraction The fraction of this program's available CPU time used by the GC since the program started.
# TYPE go_memstats_gc_cpu_fraction gauge
go_memstats_gc_cpu_fraction -0.00014404354379774563
# HELP go_memstats_gc_sys_bytes Number of bytes used for garbage collection system metadata.
# TYPE go_memstats_gc_sys_bytes gauge
go_memstats_gc_sys_bytes 6.0936192e+07
# HELP go_memstats_heap_alloc_bytes Number of heap bytes allocated and still in use.
# TYPE go_memstats_heap_alloc_bytes gauge
go_memstats_heap_alloc_bytes 1.581062048e+09
# HELP go_memstats_heap_idle_bytes Number of heap bytes waiting to be used.
# TYPE go_memstats_heap_idle_bytes gauge
go_memstats_heap_idle_bytes 3.8551552e+07
# HELP go_memstats_heap_inuse_bytes Number of heap bytes that are in use.
# TYPE go_memstats_heap_inuse_bytes gauge
go_memstats_heap_inuse_bytes 1.590673408e+09
# HELP go_memstats_heap_objects Number of allocated objects.
# TYPE go_memstats_heap_objects gauge
go_memstats_heap_objects 1.6924595e+07
# HELP go_memstats_heap_released_bytes Number of heap bytes released to OS.
# TYPE go_memstats_heap_released_bytes gauge
go_memstats_heap_released_bytes 0
# HELP go_memstats_heap_sys_bytes Number of heap bytes obtained from system.
# TYPE go_memstats_heap_sys_bytes gauge
go_memstats_heap_sys_bytes 1.62922496e+09
# HELP go_memstats_last_gc_time_seconds Number of seconds since 1970 of last garbage collection.
# TYPE go_memstats_last_gc_time_seconds gauge
go_memstats_last_gc_time_seconds 1.520291233297057e+09
# HELP go_memstats_lookups_total Total number of pointer lookups.
# TYPE go_memstats_lookups_total counter
go_memstats_lookups_total 397
# HELP go_memstats_mallocs_total Total number of mallocs.
# TYPE go_memstats_mallocs_total counter
go_memstats_mallocs_total 2.8204508e+07
# HELP go_memstats_mcache_inuse_bytes Number of bytes in use by mcache structures.
# TYPE go_memstats_mcache_inuse_bytes gauge
go_memstats_mcache_inuse_bytes 13888
# HELP go_memstats_mcache_sys_bytes Number of bytes used for mcache structures obtained from system.
# TYPE go_memstats_mcache_sys_bytes gauge
go_memstats_mcache_sys_bytes 16384
# HELP go_memstats_mspan_inuse_bytes Number of bytes in use by mspan structures.
# TYPE go_memstats_mspan_inuse_bytes gauge
go_memstats_mspan_inuse_bytes 1.4781696e+07
# HELP go_memstats_mspan_sys_bytes Number of bytes used for mspan structures obtained from system.
# TYPE go_memstats_mspan_sys_bytes gauge
go_memstats_mspan_sys_bytes 1.4893056e+07
# HELP go_memstats_next_gc_bytes Number of heap bytes when next garbage collection will take place.
# TYPE go_memstats_next_gc_bytes gauge
go_memstats_next_gc_bytes 2.38107752e+09
# HELP go_memstats_other_sys_bytes Number of bytes used for other system allocations.
# TYPE go_memstats_other_sys_bytes gauge
go_memstats_other_sys_bytes 4.366786e+06
# HELP go_memstats_stack_inuse_bytes Number of bytes in use by the stack allocator.
# TYPE go_memstats_stack_inuse_bytes gauge
go_memstats_stack_inuse_bytes 983040
# HELP go_memstats_stack_sys_bytes Number of bytes obtained from system for stack allocator.
# TYPE go_memstats_stack_sys_bytes gauge
go_memstats_stack_sys_bytes 983040
# HELP go_memstats_sys_bytes Number of bytes obtained from system.
# TYPE go_memstats_sys_bytes gauge
go_memstats_sys_bytes 1.711914744e+09
# HELP go_threads Number of OS threads created.
# TYPE go_threads gauge
go_threads 16