X-Git-Url: https://git.openstreetmap.org/chef.git/blobdiff_plain/2c47ce1f262afebbb0ace3b7d0cd0c19f5ce4739..2bfb0ef07fb64314f5c4ded641a8c280df9c1d0b:/cookbooks/postgresql/recipes/default.rb

diff --git a/cookbooks/postgresql/recipes/default.rb b/cookbooks/postgresql/recipes/default.rb
index 4d7aec10e..b5e7be908 100644
--- a/cookbooks/postgresql/recipes/default.rb
+++ b/cookbooks/postgresql/recipes/default.rb
@@ -40,6 +40,7 @@ node[:postgresql][:versions].each do |version|
     mode "644"
     variables :version => version, :defaults => defaults, :settings => settings
     notifies :reload, "service[postgresql]"
+    only_if { ::Dir.exist?("/etc/postgresql/#{version}/main") }
   end
 
   template "/etc/postgresql/#{version}/main/pg_hba.conf" do
@@ -50,6 +51,7 @@ node[:postgresql][:versions].each do |version|
     variables :early_rules => settings[:early_authentication_rules] || defaults[:early_authentication_rules],
               :late_rules => settings[:late_authentication_rules] || defaults[:late_authentication_rules]
     notifies :reload, "service[postgresql]"
+    only_if { ::Dir.exist?("/etc/postgresql/#{version}/main") }
   end
 
   template "/etc/postgresql/#{version}/main/pg_ident.conf" do
@@ -59,14 +61,17 @@ node[:postgresql][:versions].each do |version|
     mode "640"
     variables :maps => settings[:user_name_maps] || defaults[:user_name_maps]
     notifies :reload, "service[postgresql]"
+    only_if { ::Dir.exist?("/etc/postgresql/#{version}/main") }
   end
 
   link "/var/lib/postgresql/#{version}/main/server.crt" do
     to "/etc/ssl/certs/ssl-cert-snakeoil.pem"
+    only_if { ::Dir.exist?("/var/lib/postgresql/#{version}/main") }
   end
 
   link "/var/lib/postgresql/#{version}/main/server.key" do
     to "/etc/ssl/private/ssl-cert-snakeoil.key"
+    only_if { ::Dir.exist?("/var/lib/postgresql/#{version}/main") }
   end
 
   standby_mode = settings[:standby_mode] || defaults[:standby_mode]
@@ -89,11 +94,13 @@ node[:postgresql][:versions].each do |version|
                 :restore_command => restore_command,
                 :passwords => passwords
       notifies :reload, "service[postgresql]"
+      only_if { ::Dir.exist?("/var/lib/postgresql/#{version}/main") }
     end
   else
     template "/var/lib/postgresql/#{version}/main/recovery.conf" do
       action :delete
       notifies :reload, "service[postgresql]"
+      only_if { ::Dir.exist?("/var/lib/postgresql/#{version}/main") }
     end
   end
 end
@@ -154,13 +161,23 @@ clusters.each do |name, details|
   end
 end
 
-ports = clusters.collect do |_, details|
-  "port=#{details[:port]}"
+uris = clusters.collect do |_, details|
+  "postgres@:#{details[:port]}/postgres?host=/run/postgresql"
+end
+
+template "/etc/prometheus/exporters/postgres_queries.yml" do
+  source "postgres_queries.yml.erb"
+  owner "root"
+  group "root"
+  mode "644"
 end
 
 prometheus_exporter "postgres" do
   port 9187
   user "postgres"
-  environment "DATA_SOURCE_NAME" => "user=postgres host=/run/postgresql #{ports.join(',')}",
+  options "--extend.query-path=/etc/prometheus/exporters/postgres_queries.yml"
+  environment "DATA_SOURCE_URI" => uris.sort.uniq.first,
+              "PG_EXPORTER_AUTO_DISCOVER_DATABASES" => "true",
               "PG_EXPORTER_EXCLUDE_DATABASES" => "postgres,template0,template1"
+  subscribes :restart, "template[/etc/prometheus/exporters/postgres_queries.yml]"
 end