diff --git a/resources/libraries/helper.rb b/resources/libraries/helper.rb
index fcb6c4e..bbbe3b9 100644
--- a/resources/libraries/helper.rb
+++ b/resources/libraries/helper.rb
@@ -14,22 +14,14 @@ def local_routes
       routes
     end
 
-    # Queries Serf members to find the master node's IP.
-    def find_master_ip_from_serf(postgresql_hosts)
-      postgresql_master_node = postgresql_hosts.first
-      serf_output = `serf members`
+    def find_master_ip
+      cluster_info = node.dig('redborder', 'cluster_info')
+      postgresql_managers = node.dig('redborder', 'managers_per_services', 'postgresql')
 
-      master_ip = serf_output.lines.find do |line|
-        next unless line.include?('alive')
-
-        node_name = line.split[0]
-        node_name == postgresql_master_node
+      if cluster_info && postgresql_managers
+        postgres_ips = cluster_info.select { |m, _| postgresql_managers.include?(m) }.map { |_, v| v['ipaddress_sync'] }
+        postgres_ips.first
       end
-
-      return unless master_ip
-
-      ip_part = master_ip.split[1]
-      ip_part&.split(':')&.first
     end
   end
 end
diff --git a/resources/providers/config.rb b/resources/providers/config.rb
index 3ff3f15..330dc46 100644
--- a/resources/providers/config.rb
+++ b/resources/providers/config.rb
@@ -6,7 +6,6 @@
 action :add do
   begin
     user = new_resource.user
-    postgresql_hosts = new_resource.postgresql_hosts
     routes = local_routes
 
     dnf_package 'postgresql' do
@@ -42,7 +41,7 @@
 
       ruby_block 'sync_if_not_master' do
         block do
-          master_ip = find_master_ip_from_serf(postgresql_hosts)
+          master_ip = find_master_ip
           if master_ip
             local_ips = `hostname -I`.split
             unless local_ips.include?(master_ip)
diff --git a/resources/resources/config.rb b/resources/resources/config.rb
index 7519878..ad68593 100644
--- a/resources/resources/config.rb
+++ b/resources/resources/config.rb
@@ -8,4 +8,3 @@
 attribute :postgresql_port, kind_of: Integer, default: 5432
 attribute :cdomain, kind_of: String, default: 'redborder.cluster'
 attribute :ipaddress, kind_of: String, default: '127.0.0.1'
-attribute :postgresql_hosts, kind_of: Array, default: []