--- Begin Message ---
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Subject: |
[PATCH] services: Add prometheus-node-exporter-service-type. |
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Date: |
Wed, 20 Jun 2018 14:59:46 +0200 |
* gnu/services/monitoring.scm (prometheus-node-exporter-service-type):
New variable.
(<prometheus-node-exporter-configuration>): New record type.
(prometheus-node-exporter-shepherd-service): New procedure.
* gnu/doc/guix.texi (Monitoring Services): Document it.
---
doc/guix.texi | 32 ++++++++++++++++++++++++++++++++
gnu/services/monitoring.scm | 37 ++++++++++++++++++++++++++++++++++++-
2 files changed, 68 insertions(+), 1 deletion(-)
diff --git a/doc/guix.texi b/doc/guix.texi
index 1ecb11002..6a649c549 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -15570,6 +15570,38 @@ Specify the path of the base URL. This can be useful
if
@end table
@end deftp
address@hidden Prometheus Node Exporter Service
address@hidden prometheus-node-exporter
+Prometheus node exporter is a Prometheus exporter. It makes hardware and
+operating system statistics provided by *NIX kernels available for the
+Prometheus monitoring system. This service should be deployed on all
+physical nodes and virtual machines, where monitoring these statistics is
+desirable.
+
address@hidden {Scheme variable} prometheus-node-exporter-service-type
+This is the service type for the
address@hidden://github.com/prometheus/node_exporter/, prometheus-node-exporter}
+service, its value must be a @code{prometheus-node-exporter-configuration}
+record as in this example:
+
address@hidden
+(service prometheus-node-exporter-service-type
+ (prometheus-node-exporter-configuration
+ (web-listen-address ":9100")))
address@hidden example
address@hidden defvar
+
address@hidden {Data Type} prometheus-node-exporter-configuration
+Data type representing the configuration of @command{node_exporter}.
+
address@hidden @asis
address@hidden @code{package} (default:
@code{go-github-com-prometheus-node-exporter})
+The prometheus-node-exporter package to use.
address@hidden @code{web-listen-address} (default: @code{":9100"})
+Bind the web interface to the specified address.
+
address@hidden table
address@hidden deftp
@node Kerberos Services
@subsubsection Kerberos Services
diff --git a/gnu/services/monitoring.scm b/gnu/services/monitoring.scm
index 49a65db4b..2fc90c867 100644
--- a/gnu/services/monitoring.scm
+++ b/gnu/services/monitoring.scm
@@ -26,7 +26,9 @@
#:use-module (guix records)
#:use-module (ice-9 match)
#:export (darkstat-configuration
- darkstat-service-type))
+ prometheus-node-exporter-configuration
+ darkstat-service-type
+ prometheus-node-exporter-service-type))
;;;
@@ -89,3 +91,36 @@ HTTP.")
(const %darkstat-accounts))
(service-extension shepherd-root-service-type
(compose list darkstat-shepherd-service))))))
+
+(define-record-type* <prometheus-node-exporter-configuration>
+ prometheus-node-exporter-configuration
+ make-prometheus-node-exporter-configuration
+ prometheus-node-exporter-configuration?
+ (package prometheus-node-exporter-configuration-package
+ (default go-github-com-prometheus-node-exporter))
+ (web-listen-address prometheus-node-exporter-web-listen-address
+ (default ":9100")))
+
+(define prometheus-node-exporter-shepherd-service
+ (match-lambda
+ (( $ <prometheus-node-exporter-configuration>
+ package web-listen-address)
+ (shepherd-service
+ (documentation "Prometheus node exporter.")
+ (provision '(prometheus-node-exporter))
+ (requirement '(networking))
+ (start #~(make-forkexec-constructor
+ (list #$(file-append package "/bin/node_exporter")
+ "--web.listen-address" #$web-listen-address)))
+ (stop #~(make-kill-destructor))))))
+
+(define prometheus-node-exporter-service-type
+ (service-type
+ (name 'prometheus-node-exporter)
+ (description
+ "Run @command{node_exporter} to serve hardware and OS metrics to
+prometheus.")
+ (extensions
+ (list (service-extension
+ shepherd-root-service-type
+ (compose list prometheus-node-exporter-shepherd-service))))))
--
2.17.1
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