Re: [PATCH 0/2] Added new Package node_exporter

[Robin Roevens <robin.roevens@disroot.org>]

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Hi all

I wanted to add that Zabbix server can also interpret Prometheus format
out-of-the-box, so installing node_exporter on IPFire could provide a
possibly more light-weight alternative to installing zabbix_agentd for
monitoring IPFire with Zabbix (however already quite light-weight). Or
an addition as both will probably have different capabilities and
possibilities...Zabbix can fetch info from both.

Regards
Robin

Holger Sunke schreef op vr 07-05-2021 om 18:05 [+0000]:
> Hello Adolf,
> 
> the node_exporter provides a simple http download on port 9100
> (default) 
> that common measures around the OS runtime in a plain text form like
> this:
> 
> http://[firewall]:9100/metrics
> 
> # HELP go_gc_duration_seconds A summary of the pause duration of
> garbage 
> collection cycles.
> # TYPE go_gc_duration_seconds summary
> go_gc_duration_seconds{quantile="0"} 5.3912e-05
> go_gc_duration_seconds{quantile="0.25"} 7.1192e-05
> go_gc_duration_seconds{quantile="0.5"} 7.947e-05
> go_gc_duration_seconds{quantile="0.75"} 9.8797e-05
> go_gc_duration_seconds{quantile="1"} 0.004091312
> go_gc_duration_seconds_sum 1.5650559450000001
> go_gc_duration_seconds_count 7994
> # HELP go_goroutines Number of goroutines that currently exist.
> # TYPE go_goroutines gauge
> go_goroutines 8
> # HELP go_info Information about the Go environment.
> # TYPE go_info gauge
> go_info{version="go1.15.4"} 1
> # HELP go_memstats_alloc_bytes Number of bytes allocated and still in
> use.
> # TYPE go_memstats_alloc_bytes gauge
> go_memstats_alloc_bytes 3.542504e+06
> even if freed.
> ....
> +about 1k additional lines
> 
> This is useful for those who have a Prometheus instance up and
> running 
> somewhere in their network that collects these kind of measures from
> an 
> arbitrary amount of machines. Prometheus then stores these in a time 
> series database and provides easy query access against these data, 
> all them or configuring arbitrary kind of alerts.
> 
> Summing it up it is very lightweight, simple to integrate but useful 
> only when there's a prometheus runnung for you. You'd not setup a 
> prometheus/grafana stack just because ipfire can run a node_exporter.
> 
> 
> In this first step, only general OS and IO stats are supported as 
> node_exporter is nativly shipping with. In a later step we can think 
> about adding metrics from log analyzis (number of packets 
> dopped/rejected, number of suspectibles by intrusion detections, ...)
> or 
> other custom stuff.
> .prom) and placed in some specific local folder on the ipFire file 
> system and would then be picked by node_exporter and simply appended
> to 
> the http://...:9100/metrics response.
> 
> Yes, i'd like to maintain this package for the ipfire. I think this 
> would include beside others:
> - Keep track of and upgrade to new versions
> - Keep track especially on security alerts
> - Being reponsive on questions regarding the package
> - Testing for each supported architecture
> 
> 
> Kind regards
> 
> Holger
> 
> > 
> > I believe that the core devs will expect, if the addon is agreed to
> > be a 
> > valuable additional package, a longer term commitment from yourself
> > to 
> > take on the role of maintainer for the package. It would be good to
> > have 
> > that commitment in this covering note.
> > 
> > Regards,
> > 
> > Adolf.
> > 
> > On 06/05/2021 21:46, Holger Sunke wrote:
> > > These patches add the new package node_exporter as discussed in
> > > the 
> > > form thread:
> > > https://community.ipfire.org/t/please-add-prometheus-exporter/3555
> > > 
> > > GO language is required to compile node_exporter. In order to
> > > compile
> > > node_exporter for i586 arch, "go" package supported architecture
> > > must be extended for this.
> > > You'll likely want to download packages and adjust DL_FROM
> > > variables
> > > in "go" and "node_exporter" LFS scripts.
> > > 
> > > Holger Sunke (2):
> > >    Added i586/386 support for GO language required for
> > > node_exporter.
> > >    Added new node_exporter package.
> > > 
> > >   config/rootfiles/packages/node_exporter       |  3 +
> > >   lfs/Config                                    |  4 +
> > >   lfs/go                                        |  6 +-
> > >   lfs/node_exporter                             | 88
> > > +++++++++++++++++++
> > >   make.sh                                       |  1 +
> > >   src/paks/node_exporter/install.sh             | 31 +++++++
> > >   src/paks/node_exporter/uninstall.sh           | 30 +++++++
> > >   src/paks/node_exporter/update.sh              | 27 ++++++
> > >   ..._exporter-configurable-initd-options.patch | 48 ++++++++++
> > >   9 files changed, 235 insertions(+), 3 deletions(-)
> > >   create mode 100644 config/rootfiles/packages/node_exporter
> > >   create mode 100644 lfs/node_exporter
> > >   create mode 100644 src/paks/node_exporter/install.sh
> > >   create mode 100644 src/paks/node_exporter/uninstall.sh
> > >   create mode 100644 src/paks/node_exporter/update.sh
> > >   create mode 100644 
> > > src/patches/node_exporter-configurable-initd-options.patch
> > > 
> 


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