add installation and update Readme

.vscode/settings.json

@@ -1,5 +1,6 @@
 {
     "cSpell.words": [
+        "reqpackage",
         "rpms",
         "sslcacert",
         "sslverify"

README.md

@@ -9,6 +9,7 @@
 Prometheus is an open-source monitoring system with a dimensional data model, flexible query language, efficient time series database and modern alerting approach.
 
 `prometheus_cd` is a Puppet module to automate installation and configuration of prometheus and node exporter.
+This module supports either managing prometheus or node_exporter or both. You need to set the parameters `$manage_prometheus`and / or `$manage_node_exporter`to true ( false by default)
 
 ## WARNING
 

manifests/main/install.pp

@@ -6,4 +6,14 @@
 class prometheus_cd::main::install (
 ) inherits prometheus_cd::params {
   require prometheus_cd::main::yumrepo
+  if $manage_prometheus  == true {
+    package { $reqpackage_prom:
+      ensure => $pkg_ensure,
+    }
+  }
+  if $manage_node_exporter == true {
+    package { $reqpackage_ne:
+      ensure => $pkg_ensure,
+    }
+  }
 }

manifests/params.pp

@@ -2,8 +2,18 @@
 # Module name: prometheus_cd
 # Author: Arne Teuke (arne_teuke@confdroid.com)
 # @summary Class holds all parameters for the prometheus_cd module.
+# @param [String] reqpackage_prom the prometheus package
+# @param [String] reqpackage_ne the node_exporter package
+# @param [String] pkg_ensure which version of the package to install
+# @param [boolean] manage_prometheus whether to manage prometheus
+# @param [boolean] manage_node_exporter whether to manage node exporter
 ##############################################################################
 class prometheus_cd::params (
+  String $reqpackage_prom       = 'prometheus',
+  String $reqpackage_ne         = 'node_exporter',
+  String $pkg_ensure            = 'present',
+  Boolean $manage_prometheus    = false,
+  Boolean $manage_node_exporter = false,
 
 ) {
   # includes must be last