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prometheus-node-exporter: Support extra options. 

There are plenty of options supported that the Guix configuration record
doesn't help you with, so add this field to allow users to do their own thing.

* gnu/services/monitoring.scm (<prometheus-node-exporter-configuration>): Add
extra-options field.
(prometheus-node-exporter-shepherd-service): Handle the extra options.
* doc/guix.texi (Prometheus Node Exporter Service): Document this.
master
Christopher Baines 2020-11-28 11:03:19 +00:00
parent fd14385581
commit 92f7c11af2
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2 changed files with 9 additions and 3 deletions
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3
doc/guix.texi
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@ -22043,6 +22043,9 @@ This directory can be used to export metrics specific to this machine.
Files containing metrics in the text format, with the filename ending in Files containing metrics in the text format, with the filename ending in
@code{.prom} should be placed in this directory. @code{.prom} should be placed in this directory.
@item @code{extra-options} (default: @code{'()})
Extra options to pass to the Prometheus node exporter.
@end table @end table
@end deftp @end deftp

9
gnu/services/monitoring.scm
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@ -128,7 +128,9 @@ HTTP.")
(web-listen-address prometheus-node-exporter-web-listen-address (web-listen-address prometheus-node-exporter-web-listen-address
(default ":9100")) (default ":9100"))
(textfile-directory prometheus-node-exporter-textfile-directory (textfile-directory prometheus-node-exporter-textfile-directory
(default "/var/lib/prometheus/node-exporter"))) (default "/var/lib/prometheus/node-exporter"))
(extra-options prometheus-node-exporter-extra-options
(default '())))
(define %prometheus-node-exporter-accounts (define %prometheus-node-exporter-accounts
(list (user-account (list (user-account
@ -145,7 +147,7 @@ HTTP.")
(define prometheus-node-exporter-shepherd-service (define prometheus-node-exporter-shepherd-service
(match-lambda (match-lambda
(( $ <prometheus-node-exporter-configuration> (( $ <prometheus-node-exporter-configuration>
package web-listen-address textfile-directory) package web-listen-address textfile-directory extra-options)
(list (list
(shepherd-service (shepherd-service
(documentation "Prometheus node exporter.") (documentation "Prometheus node exporter.")
@ -157,7 +159,8 @@ HTTP.")
#$@(if textfile-directory #$@(if textfile-directory
(list "--collector.textfile.directory" (list "--collector.textfile.directory"
textfile-directory) textfile-directory)
'())) '())
#$@extra-options)
#:user "prometheus-node-exporter" #:user "prometheus-node-exporter"
#:group "prometheus-node-exporter" #:group "prometheus-node-exporter"
#:log-file "/var/log/prometheus-node-exporter.log")) #:log-file "/var/log/prometheus-node-exporter.log"))