diff --git a/src/cloud/ec2/etc/econe.conf b/src/cloud/ec2/etc/econe.conf
index 679d5fb6e9..f9ba61e670 100644
--- a/src/cloud/ec2/etc/econe.conf
+++ b/src/cloud/ec2/etc/econe.conf
@@ -34,6 +34,9 @@
 #   x509, for x509 certificate encryption of tokens
 :core_auth: cipher
 
+# 0 = ERROR, 1 = WARNING, 2 = INFO, 3 = DEBUG
+:debug_level: 3
+
 # VM types allowed and its template file (inside templates directory)
 :instance_types:
   :m1.small:
diff --git a/src/cloud/ec2/lib/EC2QueryServer.rb b/src/cloud/ec2/lib/EC2QueryServer.rb
index 4e2abd1072..66c14ad2a0 100644
--- a/src/cloud/ec2/lib/EC2QueryServer.rb
+++ b/src/cloud/ec2/lib/EC2QueryServer.rb
@@ -61,8 +61,8 @@ class EC2QueryServer < CloudServer
 
     ###########################################################################
 
-    def initialize(client, config)
-        super(config)
+    def initialize(client, config, logger)
+        super(config, logger)
 
         @client = client
     end
diff --git a/src/cloud/ec2/lib/econe-server.rb b/src/cloud/ec2/lib/econe-server.rb
index 0a8ccc1d98..e583c4ca38 100644
--- a/src/cloud/ec2/lib/econe-server.rb
+++ b/src/cloud/ec2/lib/econe-server.rb
@@ -33,6 +33,7 @@ end
 
 VIEWS_LOCATION = RUBY_LIB_LOCATION + "/cloud/econe/views"
 EC2_AUTH = VAR_LOCATION + "/.one/ec2_auth"
+EC2_LOG = VAR_LOCATION + "/econe.log"
 
 $: << RUBY_LIB_LOCATION
 $: << RUBY_LIB_LOCATION+"/cloud"
@@ -57,12 +58,13 @@ include OpenNebula
 begin
     conf = YAML.load_file(CONFIGURATION_FILE)
 rescue Exception => e
-    puts "Error parsing config file #{CONFIGURATION_FILE}: #{e.message}"
+    STDERR.puts "Error parsing config file #{CONFIGURATION_FILE}: #{e.message}"
     exit 1
 end
 
 conf[:template_location] = TEMPLATE_LOCATION
 conf[:views] = VIEWS_LOCATION
+conf[:debug_level] ||= 3
 
 CloudServer.print_configuration(conf)
 
@@ -70,21 +72,28 @@ CloudServer.print_configuration(conf)
 # Sinatra Configuration
 ##############################################################################
 set :config, conf
-set :bind, settings.config[:server]
-set :port, settings.config[:port]
+
+include CloudLogger
+enable_logging EC2_LOG, settings.config[:debug_level].to_i
 
 if CloudServer.is_port_open?(settings.config[:server],
                              settings.config[:port])
-    puts "Port busy, please shutdown the service or move econe server port."
-    exit 1
+    settings.logger.error {
+        "Port #{settings.config[:port]} busy, please shutdown " <<
+        "the service or move occi server port."
+    }
+    exit -1
 end
 
+set :bind, settings.config[:server]
+set :port, settings.config[:port]
+
 begin
     ENV["ONE_CIPHER_AUTH"] = EC2_AUTH
-    cloud_auth = CloudAuth.new(settings.config)
+    cloud_auth = CloudAuth.new(settings.config, settings.logger)
 rescue => e
-    puts "Error initializing authentication system"
-    puts e.message
+    settings.logger.error {"Error initializing authentication system"}
+    settings.logger.error {e.message}
     exit -1
 end
 
@@ -116,6 +125,7 @@ before do
         params['econe_path'] = settings.econe_path
         username = settings.cloud_auth.auth(request.env, params)
     rescue Exception => e
+        logger.error {e.message}
         error 500, error_xml("AuthFailure", 0)
     end
 
@@ -123,7 +133,7 @@ before do
         error 401, error_xml("AuthFailure", 0)
     else
         client = settings.cloud_auth.client(username)
-        @econe_server = EC2QueryServer.new(client, settings.config)
+        @econe_server = EC2QueryServer.new(client, settings.config, settings.logger)
     end
 end
 
@@ -179,6 +189,7 @@ def do_http_request(params)
     end
 
     if OpenNebula::is_error?(result)
+        logger.error(result.message)
         error rc, error_xml(result.message, 0)
     end
 
diff --git a/src/cloud/occi/etc/occi-server.conf b/src/cloud/occi/etc/occi-server.conf
index 71402a6457..5ab9849e09 100644
--- a/src/cloud/occi/etc/occi-server.conf
+++ b/src/cloud/occi/etc/occi-server.conf
@@ -34,9 +34,6 @@
 #   x509, for x509 certificate encryption of tokens
 :core_auth: cipher
 
-# Life-time in seconds for token renewal (that used to handle OpenNebula auths)
-:token_expiration_delta: 1800
-
 # 0 = ERROR, 1 = WARNING, 2 = INFO, 3 = DEBUG
 :debug_level: 3