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A zpool_influxdb command is introduced to ease the collection of zpool statistics into the InfluxDB time-series database. Examples are given on how to integrate with the telegraf statistics aggregator, a companion to influxdb. Finally, a grafana dashboard template is included to show how pool latency distributions can be visualized in a ZFS + telegraf + influxdb + grafana environment. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Signed-off-by: Richard Elling <Richard.Elling@RichardElling.com> Closes #10786
94 lines
3.5 KiB
Groff
94 lines
3.5 KiB
Groff
.\"
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.\" CDDL HEADER START
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.\"
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.\" The contents of this file are subject to the terms of the
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.\" Common Development and Distribution License (the "License").
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.\" You may not use this file except in compliance with the License.
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.\"
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.\" You can obtain a copy of the license at
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.\" https://opensource.org/licenses/CDDL-1.0
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.\" See the License for the specific language governing permissions
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.\" and limitations under the License.
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.\"
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.\" When distributing Covered Code, include this CDDL HEADER in each
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.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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.\" If applicable, add the following below this CDDL HEADER, with the
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.\" fields enclosed by brackets "[]" replaced with your own identifying
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.\" information: Portions Copyright [yyyy] [name of copyright owner]
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.\"
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.\" CDDL HEADER END
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.\"
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.\"
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.\" Copyright 2020 Richard Elling
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.\" .Dd June 14, 2020
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.TH zpool_influxdb 8
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.SH NAME
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zpool_influxdb \- collect zpool statistics in influxdb line protocol format
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.SH SYNOPSIS
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.LP
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.nf
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\fBzpool_influxdb\fR [--execd] [--no-histogram] [--sum-histogram-buckets]
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[--tags key=value] [pool]
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\fBzpool_influxdb\fR --help
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.fi
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.SH DESCRIPTION
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The \fBzpool_influxdb\fR command produces influxdb line protocol compatible
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metrics from zpools. Like the \fBzpool\fR command, \fBzpool_influxdb\fR
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reads the current pool status and statistics. Unlike the \fBzpool\fR
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command which is intended for humans, \fBzpool_influxdb\fR formats the
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output in influxdb line protocol. The expected use is as a plugin to a
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metrics collector or aggregator, such as telegraf.
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By default, \fBzpool_influxdb\fR prints pool metrics and status in the
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influxdb line protocol format. All pools are printed, similar to
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the \fBzpool status\fR command. Providing a pool name restricts the
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output to the named pool.
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Like the \fBzpool\fR command, \fBzpool_influxdb\fR uses internal data
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structures that can change over time as new ZFS releases are made.
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Therefore, the \fBzpool_influxdb\fR command must be compiled against the
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ZFS source. It is expected that later releases of ZFS includes compatible
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\fBzpool_influxdb\fR and \fBzpool\fR commands.
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.SH OPTIONS
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.TP
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\fB\--execd\fR, \fB-e\fR
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Run in daemon mode compatible with telegraf`s \fBexecd\fR plugin.
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In this mode, the pools are sampled every time there is a [return] on stdin.
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Once a sample printed, \fBzpool_influxdb\fR waits for another [return].
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When run on a terminal, use [ctrl+C] to exit.
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.TP
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\fB\--no-histogram\fR, \fB-n\fR
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Do not print latency and I/O size histograms. This can reduce the total
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amount of data, but one should consider the value brought by the insights
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that latency and I/O size distributions provide. The resulting values
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are suitable for graphing with grafana's heatmap plugin.
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.TP
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\fB--sum-histogram-buckets\fR, \fB-s\fR
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Accumulates bucket values. By default, the values are not accumulated and
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the raw data appears as shown by \fBzpool iostat\fR. This works well for
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grafana's heatmap plugin. Summing the buckets produces output similar to
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prometheus histograms.
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.TP
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\fB--tags\fR, \fB-t\fR
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Adds specified tags to the tag set. Tags are key=value pairs and multiple
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tags are separated by commas. No sanity checking is performed.
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See the InfluxDB Line Protocol format documentation for details on escaping
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special characters used in tags.
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.TP
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\fB\--help\fR, \fB\-h\fR
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Print a usage summary.
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.SH SEE ALSO
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.LP
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\fBzpool-status\fR(8)
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\fBzpool-iostat\fR(8)
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.PP
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Influxdb https://github.com/influxdata/influxdb
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.PP
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Telegraf https://github.com/influxdata/telegraf
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.PP
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Grafana https://grafana.com
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.PP
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Prometheus https://prometheus.io
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