add remote read

manifests/params.pp

@@ -83,7 +83,7 @@ class prometheus_cd::params (
 
   # remote write external
   Boolean $ps_write_external    = false,
-  String $ps_external_url       = 'http://changeme.local/write',
+  String $ps_external_url       = 'http://changeme.local',
 
   # pruning script
   Boolean $ps_enable_pruning    = false,

templates/prometheus.yml.erb

@@ -33,7 +33,14 @@ scrape_configs:
     password: <%= @ps_auth_pass %>
 remote_write:
 <% if @ps_write_external == true -%>
-  - url: "<%= @ps_external_url %>"
+  - url: "<%= @ps_external_url %>/write"
+    basic_auth:
+      username: <%= @ps_auth_ext_user %>
+      password: <%= @ps_auth_ext_pass %>
+<% end -%>
+remote_read:
+<% if @ps_write_external == true -%>
+  - url: "<%= @ps_external_url %>/read"
     basic_auth:
       username: <%= @ps_auth_ext_user %>
       password: <%= @ps_auth_ext_pass %>