diff --git a/devops-service/db/mongo/connectors/base.rb b/devops-service/db/mongo/connectors/base.rb
index 0bc6499..9e5f762 100644
--- a/devops-service/db/mongo/connectors/base.rb
+++ b/devops-service/db/mongo/connectors/base.rb
@@ -6,10 +6,24 @@ require "exceptions/invalid_privileges"
 module Connectors
   class Base
 
+    # если хотим создавать индексы при старте приложения, нужно сначала создать коллекцию
+    def initialize db
+      names = db.collection_names
+      unless names.include?(self.collection_name)
+        db.create_collection(self.collection_name)
+        puts "Collection '#{self.collection_name}' has been created"
+      end
+      self.collection = db.collection(self.collection_name)
+    end
+
     def create_indexes
 
     end
 
+    def collection_name
+      raise "owerride me"
+    end
+
     # Yes, we can implement connectors without attr_accessor, storing collection directly
     # in instance variable like
     # @collection = db.collection('users')
diff --git a/devops-service/db/mongo/connectors/filter.rb b/devops-service/db/mongo/connectors/filter.rb
index 9cd4ba5..8fde9c1 100644
--- a/devops-service/db/mongo/connectors/filter.rb
+++ b/devops-service/db/mongo/connectors/filter.rb
@@ -2,7 +2,11 @@ module Connectors
   class Filter < Base
 
     def initialize(db)
-      self.collection = db.collection('filters')
+      super(db)
+    end
+
+    def collection_name
+      'filters'
     end
 
     def available_images provider
diff --git a/devops-service/db/mongo/connectors/image.rb b/devops-service/db/mongo/connectors/image.rb
index f681064..c3ecac8 100644
--- a/devops-service/db/mongo/connectors/image.rb
+++ b/devops-service/db/mongo/connectors/image.rb
@@ -9,7 +9,11 @@ module Connectors
       Helpers::UpdateCommand
 
     def initialize(db)
-      self.collection = db.collection('images')
+      super(db)
+    end
+
+    def collection_name
+      'images'
     end
 
     def images(provider=nil)
diff --git a/devops-service/db/mongo/connectors/key.rb b/devops-service/db/mongo/connectors/key.rb
index c2bfd9e..cdbd2c4 100644
--- a/devops-service/db/mongo/connectors/key.rb
+++ b/devops-service/db/mongo/connectors/key.rb
@@ -7,7 +7,11 @@ module Connectors
       Helpers::DeleteCommand
 
     def initialize(db)
-      self.collection = db.collection('keys')
+      super(db)
+    end
+
+    def collection_name
+      'keys'
     end
 
     def key(id, scope=nil)
diff --git a/devops-service/db/mongo/connectors/project.rb b/devops-service/db/mongo/connectors/project.rb
index 14e89b9..058ebff 100644
--- a/devops-service/db/mongo/connectors/project.rb
+++ b/devops-service/db/mongo/connectors/project.rb
@@ -8,7 +8,11 @@ module Connectors
 
 
     def initialize(db)
-      @collection = db.collection('projects')
+      super(db)
+    end
+
+    def collection_name
+      'projects'
     end
 
     def is_project_exists?(project)
diff --git a/devops-service/db/mongo/connectors/project_template.rb b/devops-service/db/mongo/connectors/project_template.rb
index e461edd..11bcfbd 100644
--- a/devops-service/db/mongo/connectors/project_template.rb
+++ b/devops-service/db/mongo/connectors/project_template.rb
@@ -8,7 +8,11 @@ module Connectors
 
 
     def initialize(db)
-      @collection = db.collection('project_templates')
+      super(db)
+    end
+
+    def collection_name
+      'project_templates'
     end
   end
 end
diff --git a/devops-service/db/mongo/connectors/report.rb b/devops-service/db/mongo/connectors/report.rb
index 4c7075e..8c5b199 100644
--- a/devops-service/db/mongo/connectors/report.rb
+++ b/devops-service/db/mongo/connectors/report.rb
@@ -6,7 +6,11 @@ module Connectors
       Helpers::ListCommand
 
     def initialize(db)
-      self.collection = db.collection('reports')
+      super(db)
+    end
+
+    def collection_name
+      'reports'
     end
 
     def save_report r
diff --git a/devops-service/db/mongo/connectors/server.rb b/devops-service/db/mongo/connectors/server.rb
index bfebcc2..4ab4fea 100644
--- a/devops-service/db/mongo/connectors/server.rb
+++ b/devops-service/db/mongo/connectors/server.rb
@@ -5,7 +5,11 @@ module Connectors
 
 
     def initialize(db)
-      self.collection = db.collection('servers')
+      super(db)
+    end
+
+    def collection_name
+      'servers'
     end
 
     def servers_find(query, fields=nil)
diff --git a/devops-service/db/mongo/connectors/stack.rb b/devops-service/db/mongo/connectors/stack.rb
index 958ba16..feee768 100644
--- a/devops-service/db/mongo/connectors/stack.rb
+++ b/devops-service/db/mongo/connectors/stack.rb
@@ -7,7 +7,11 @@ module Connectors
       Helpers::UpdateCommand
 
     def initialize(db)
-      self.collection = db.collection('stacks')
+      super(db)
+    end
+
+    def collection_name
+      'stacks'
     end
 
     def stacks(options={})
diff --git a/devops-service/db/mongo/connectors/stack_template.rb b/devops-service/db/mongo/connectors/stack_template.rb
index 172f1a1..51f8b4b 100644
--- a/devops-service/db/mongo/connectors/stack_template.rb
+++ b/devops-service/db/mongo/connectors/stack_template.rb
@@ -8,7 +8,11 @@ module Connectors
       Helpers::UpdateCommand
 
     def initialize(db)
-      self.collection = db.collection('stack_templates')
+      super(db)
+    end
+
+    def collection_name
+      "stack_templates"
     end
 
     def stack_templates(provider=nil)
diff --git a/devops-service/db/mongo/connectors/statictic.rb b/devops-service/db/mongo/connectors/statictic.rb
index b797c23..83927f2 100644
--- a/devops-service/db/mongo/connectors/statictic.rb
+++ b/devops-service/db/mongo/connectors/statictic.rb
@@ -2,7 +2,11 @@ module Connectors
   class Statistic < Base
 
     def initialize(db)
-      self.collection = db.collection('statistic')
+      super(db)
+    end
+
+    def collection_name
+      'statistic'
     end
 
     def insert_statistic(user, path, method, body, response_code)
@@ -45,7 +49,8 @@ module Connectors
     private
 
       def mongo_sort_order(order)
-        raise "Wrong sort order" unless %w(asc desc).include?(order)
+        # asc by default and if order id invalid value, it is not a reason for response with code 500
+        #raise "Wrong sort order" unless %w(asc desc).include?(order)
         order == 'asc' ? 1 : -1
       end
 
diff --git a/devops-service/db/mongo/connectors/user.rb b/devops-service/db/mongo/connectors/user.rb
index 526839d..5699811 100644
--- a/devops-service/db/mongo/connectors/user.rb
+++ b/devops-service/db/mongo/connectors/user.rb
@@ -8,7 +8,11 @@ module Connectors
       Helpers::UpdateCommand
 
     def initialize(db)
-      self.collection = db.collection('users')
+      super(db)
+    end
+
+    def collection_name
+      'users'
     end
 
     def user_auth user, password