Disable collection of bgwriter statistics for postgres 17

[chef.git] / cookbooks / postgresql / recipes / default.rb

diff --git a/cookbooks/postgresql/recipes/default.rb b/cookbooks/postgresql/recipes/default.rb
index 9f713b60e9834f28300df03169dd31a7d323fe92..742941ee9161a224769121bad55dfd6f6a4bfa07 100644 (file)
--- a/cookbooks/postgresql/recipes/default.rb
+++ b/cookbooks/postgresql/recipes/default.rb
@@ -18,7 +18,6 @@
 #
 
 include_recipe "apt::postgresql"
-include_recipe "munin"
 include_recipe "prometheus"
 
 package "locales-all"
@@ -108,85 +107,73 @@ ohai_plugin "postgresql" do
   template "ohai.rb.erb"
 end
 
-file "/etc/prometheus/exporters/postgres_queries.yml" do
-  action :delete
-end
-
 package "pgtop"
 package "libdbd-pg-perl"
 
 clusters = node[:postgresql][:clusters] || []
+passwords = data_bag_item("postgresql", "passwords")
 
 clusters.each do |name, details|
   prometheus_suffix = name.tr("/", "-")
   prometheus_database = node[:postgresql][:monitor_database]
 
+  postgresql_user "prometheus" do
+    cluster name
+    password passwords["prometheus"]
+    roles "pg_monitor"
+    not_if { ::File.exist?("/var/lib/postgresql/#{name}/standby.signal") }
+  end
+
+  exporter_options = %w[
+    --collector.database_wraparound
+    --collector.long_running_transactions
+    --collector.process_idle
+    --collector.stat_activity_autovacuum
+    --collector.stat_wal_receiver
+    --collector.statio_user_indexes
+  ]
+
+  exporter_options << "--no-collector.stat_bgwriter" if details[:version] >= 17
+
   prometheus_exporter "postgres" do
     port 10000 + details[:port].to_i
     service "postgres-#{prometheus_suffix}"
     labels "cluster" => name
     scrape_interval "1m"
     scrape_timeout "1m"
-    user "postgres"
-    options %w[
-      --collector.database_wraparound
-      --collector.long_running_transactions
-      --collector.process_idle
-      --collector.stat_activity_autovacuum
-      --collector.stat_wal_receiver
-      --collector.statio_user_indexes
-    ]
-    environment "DATA_SOURCE_NAME" => "postgres:///#{prometheus_database}?host=/run/postgresql&port=#{details[:port]}"
+    options exporter_options
+    environment "DATA_SOURCE_NAME" => "postgres:///#{prometheus_database}?host=/run/postgresql&port=#{details[:port]}&user=prometheus&password=#{passwords['prometheus']}"
     restrict_address_families "AF_UNIX"
-    remove_ipc false
     subscribes :restart, "template[/etc/prometheus/exporters/postgres_queries.yml]"
   end
 
-  munin_suffix = name.tr("/", ":")
-
-  munin_plugin "postgres_bgwriter_#{munin_suffix}" do
-    target "postgres_bgwriter"
-    conf "munin.erb"
-    conf_variables :port => details[:port]
-  end
-
-  munin_plugin "postgres_checkpoints_#{munin_suffix}" do
-    target "postgres_checkpoints"
-    conf "munin.erb"
-    conf_variables :port => details[:port]
-  end
-
-  munin_plugin "postgres_connections_db_#{munin_suffix}" do
-    target "postgres_connections_db"
-    conf "munin.erb"
-    conf_variables :port => details[:port]
-  end
-
-  munin_plugin "postgres_users_#{munin_suffix}" do
-    target "postgres_users"
-    conf "munin.erb"
-    conf_variables :port => details[:port]
-  end
-
-  munin_plugin "postgres_xlog_#{munin_suffix}" do
-    target "postgres_xlog"
-    conf "munin.erb"
-    conf_variables :port => details[:port]
-  end
+  if node[:postgresql][:monitor_queries]
+    template "/etc/prometheus/exporters/sql_exporter.yml" do
+      source "sql_exporter.yml.erb"
+      owner "root"
+      group "root"
+      mode "644"
+    end
 
-  next unless File.exist?("/var/lib/postgresql/#{details[:version]}/main/recovery.conf")
+    prometheus_exporter "sql" do
+      port 20000 + details[:port].to_i
+      service "sql-#{prometheus_suffix}"
+      labels "cluster" => name
+      scrape_interval "1m"
+      scrape_timeout "1m"
+      options "--config.file=/etc/prometheus/exporters/sql_exporter.yml"
+      environment "SQLEXPORTER_TARGET_DSN" => "postgres://prometheus:#{passwords['prometheus']}@/run/postgresql:#{details[:port]}/#{prometheus_database}"
+      restrict_address_families "AF_UNIX"
+      subscribes :restart, "template[/etc/prometheus/exporters/sql_exporter.yml]"
+    end
+  else
+    prometheus_exporter "sql" do
+      action :delete
+      service "sql-#{prometheus_suffix}"
+    end
 
-  munin_plugin "postgres_replication_#{munin_suffix}" do
-    target "postgres_replication"
-    conf "munin.erb"
-    conf_variables :port => details[:port]
+    file "/etc/prometheus/exporters/sql_exporter.yml" do
+      action :delete
+    end
   end
 end
-
-service "prometheus-postgres-exporter" do
-  action [:stop, :disable]
-end
-
-systemd_service "prometheus-postgres-exporter" do
-  action :delete
-end