From 5967b2b3fc8f1dc8d8ecd28e304087fd081cc26f Mon Sep 17 00:00:00 2001
From: 12ww1160 <arne@confdroid.com>
Date: Wed, 3 Dec 2025 15:29:56 +0100
Subject: [PATCH] OP#188 add option to allow external remote write in gerenal

---
 manifests/params.pp          | 16 ++++++++++++++--
 templates/prometheus.yml.erb |  9 ++++++++-
 2 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/manifests/params.pp b/manifests/params.pp
index 688eec4..8c88892 100644
--- a/manifests/params.pp
+++ b/manifests/params.pp
@@ -23,7 +23,11 @@
 # @param [String] ps_high_mem soft limit to make kernel reclaim earlier
 # @param [String] ps_swap_mem allow swap, but limit it
 # @param [String] ps_oom_score OOM killer choosing prometheus
-# @param [String] ps_max_procs  reduce parallel WAL replay workers
+# @param [String] ps_max_procs reduce parallel WAL replay workers
+# @param [Boolean] ps_write_external whether to allow remote postgres
+# @param [String] ps_auth_ext_user user for writing to extern instance
+# @param [String] ps_auth_ext_pass password for writing to extern instance
+# @param [String] ps_external_url the full url for the remote write point
 ##############################################################################
 class prometheus_cd::params (
 
@@ -42,11 +46,15 @@ class prometheus_cd::params (
   String $ps_fw_prefix          = '50',
   String $ps_main_port          = '9090',
 
-  # auth
+  # auth prometheus
   String $ps_auth_user          = 'changeme',
   String $ps_auth_pass          = 'changeme',
   String $ps_web_pass           = 'changeme',
 
+  # auth remote
+  String $ps_auth_ext_user      = 'changeme',
+  String $ps_auth_ext_pass      = 'changeme',
+
   # storage
   String $ps_retention_time     = '15d',
   String $ps_retention_size     = '20GB',
@@ -61,6 +69,10 @@ class prometheus_cd::params (
   String $ps_oom_score          = '500',
   String $ps_max_procs          = '1',
 
+  # remote write external
+  Boolean $ps_write_external    = false,
+  String $ps_external_url       = 'http://change.local',
+
 ) {
   # defaults
   $fqdn                   = $facts['networking']['fqdn']
diff --git a/templates/prometheus.yml.erb b/templates/prometheus.yml.erb
index 9c8521a..be62931 100644
--- a/templates/prometheus.yml.erb
+++ b/templates/prometheus.yml.erb
@@ -35,4 +35,11 @@ remote_write:
   - url: "http://localhost:9090/api/v1/write"
     basic_auth:
       username: <%= @ps_auth_user %>
-      password: <%= @ps_auth_pass %>
\ No newline at end of file
+      password: <%= @ps_auth_pass %>
+<% if @ps_write_external == true -%>
+remote_write:
+  - url: "<%= @ps_external_url %>"
+    basic_auth:
+      username: <%= @ps_auth_ext_user %>
+      password: <%= @ps_auth_ext_pass %>
+<% end -%>
\ No newline at end of file