diff --git a/mediawiki/defaults/main.yml b/mediawiki/defaults/main.yml
index 26dc76c3..47b87079 100644
--- a/mediawiki/defaults/main.yml
+++ b/mediawiki/defaults/main.yml
@@ -16,6 +16,7 @@ mw_php_prereq:
   - php5-mysqlnd
   - php-apc
   - php-pear
+  - php5-ldap
   - imagemagick
 
 # This choice is not recommended. The package has a poor list of dependencies. We do not want to deal with those
diff --git a/mysql/defaults/main.yml b/mysql/defaults/main.yml
index 21a3e9e6..cdea08a8 100644
--- a/mysql/defaults/main.yml
+++ b/mysql/defaults/main.yml
@@ -43,4 +43,5 @@ mysql_backup_logdir: '{{ mysql_log_dir }}'
 mysql_backup_logfile: '{{ mysql_backup_logdir }}/my_backup.log'
 mysql_backup_retain_copies: 15
 mysql_backup_destdir: /var/lib/mysql-backup
+mysql_backup_exclude_list: "performance_schema"
 
diff --git a/mysql/files/mysql-backup.sh b/mysql/files/mysql-backup.sh
index e08cbb74..463bebad 100644
--- a/mysql/files/mysql-backup.sh
+++ b/mysql/files/mysql-backup.sh
@@ -6,6 +6,8 @@ MY_BACKUP_USE_NAGIOS="False"
 MY_BACKUP_DIR=/var/lib/mysql-backup
 MY_DATA_DIR=/var/lib/mysql
 N_DAYS_TO_SPARE=7
+# Exclude list
+EXCLUDE_LIST='performance_schema'
 
 if [ -f /etc/default/mysql_backup ] ; then
     . /etc/default/mysql_backup
@@ -33,33 +35,28 @@ fi
 chmod 700 $MY_BACKUP_DIR
 LOCKFILE=$MY_DATA_DIR/.mysqldump.lock
 NAGIOS_LOG=$MY_BACKUP_DIR/.nagios-status
-# Exclude list
-EXCLUDE_LIST='performance_schema'
 
 if [ ! -f $LOCKFILE ] ; then
     touch $LOCKFILE
     if [ "${MY_BACKUP_USE_NAGIOS}" == "True" ] ; then
         > $NAGIOS_LOG
     fi
-    for db in $( /bin/ls -1 /var/lib/mysql/ | grep -v $EXCLUDE_LIST ) ; do
-   	    if [ -d /var/lib/mysql/$db ] ; then
-            #mysqldump -uroot -f --opt -p$MYSQLPASS $db > $MY_BACKUP_DIR/$db.sql 2> $MY_BACKUP_DIR/log/$db.log
-            mysqldump -f --opt $db > $MY_BACKUP_DIR/history/${db}.sql.${SAVE_TIME} 2> $MY_BACKUP_LOG_DIR/$db.log
-            DUMP_RESULT=$?
-            chmod 600 $MY_BACKUP_DIR/history/${db}.sql.${SAVE_TIME}
-            if [ "${MY_BACKUP_USE_NAGIOS}" == "True" ] ; then
-                if [ $DUMP_RESULT -ne 0 ] ; then
-                    echo "$db:FAILED" >> $NAGIOS_LOG
-                    RETVAL=$DUMP_RESULT
-                else
-                    echo "$db:OK" >> $NAGIOS_LOG                
-                fi
-    	    fi
-            pushd ${MY_BACKUP_DIR}/ >/dev/null 2>&1
-            rm -f $db.sql
-            ln -s $MY_BACKUP_DIR/history/${db}.sql.${SAVE_TIME} ./$db.sql
-            popd >/dev/null 2>&1
-        fi
+    for db in $( mysql -Bse "show databases;" | grep -v $EXCLUDE_LIST ) ; do
+        mysqldump -f --flush-privileges --opt $db > $MY_BACKUP_DIR/history/${db}.sql.${SAVE_TIME} 2> $MY_BACKUP_LOG_DIR/$db.log
+        DUMP_RESULT=$?
+        chmod 600 $MY_BACKUP_DIR/history/${db}.sql.${SAVE_TIME}
+        if [ "${MY_BACKUP_USE_NAGIOS}" == "True" ] ; then
+            if [ $DUMP_RESULT -ne 0 ] ; then
+                echo "$db:FAILED" >> $NAGIOS_LOG
+                RETVAL=$DUMP_RESULT
+            else
+                echo "$db:OK" >> $NAGIOS_LOG                
+            fi
+    	fi
+        pushd ${MY_BACKUP_DIR}/ >/dev/null 2>&1
+        rm -f $db.sql
+        ln -s $MY_BACKUP_DIR/history/${db}.sql.${SAVE_TIME} ./$db.sql
+        popd >/dev/null 2>&1
     done
     # Do a "flush-hosts" after the backup
     mysqladmin flush-hosts 2> $MY_BACKUP_LOG_DIR/flush-hosts.log
diff --git a/mysql/templates/mysql_backup-default.j2 b/mysql/templates/mysql_backup-default.j2
index 3eccc710..b189f3d6 100644
--- a/mysql/templates/mysql_backup-default.j2
+++ b/mysql/templates/mysql_backup-default.j2
@@ -4,3 +4,5 @@ MY_BACKUP_LOG_FILE='{{ mysql_backup_logfile}}'
 N_DAYS_TO_SPARE='{{ mysql_backup_retain_copies }}'
 MY_BACKUP_DIR='{{ mysql_backup_destdir }}'
 MY_DATA_DIR='{{ mysql_data_dir }}'
+# Exclude list
+EXCLUDE_LIST='{{ mysql_backup_exclude_list }}'
diff --git a/nginx/defaults/main.yml b/nginx/defaults/main.yml
index 657faf3e..b6000f04 100644
--- a/nginx/defaults/main.yml
+++ b/nginx/defaults/main.yml
@@ -5,6 +5,14 @@ nginx_ldap_uri: "ldap://ldap.sub.research-infrastructures.eu"
 nginx_ldap_base_dn: "dc=research-infrastructures,dc=eu"
 nginx_enabled: "Yes"
 
+nginx_enable_compression: True
+nginx_gzip_vary: "on"
+nginx_gzip_proxied: any
+nginx_gzip_comp_level: 6
+nginx_gzip_buffers: 16 8k
+nginx_gzip_http_version: 1.1
+nginx_gzip_types: "text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript application/javascript"
+
 nginx_proxy_buffering: "on"
 nginx_proxy_redirect: "off"
 nginx_proxy_buffer_size: 128k
diff --git a/nginx/tasks/nginx.yml b/nginx/tasks/nginx.yml
index cf62d3f3..f5df3143 100644
--- a/nginx/tasks/nginx.yml
+++ b/nginx/tasks/nginx.yml
@@ -4,25 +4,26 @@
   with_items:
     - nginx-full
   when: not nginx_use_ldap_pam_auth
-  tags:
-    - nginx
+  tags: nginx
 
 - name: Install the nginx web server if we need ldap auth via pam
   apt: pkg={{ item }} state=installed
-  with_items:
+  with_items: 
     - nginx-extras
   when: nginx_use_ldap_pam_auth
-  tags:
-    - nginx
+  tags: nginx
 
 - name: remove nginx default config
   file: dest=/etc/nginx/sites-enabled/default state=absent
-  notify:
-    Reload nginx
-  tags:
-    - nginx
+  notify: Reload nginx
+  tags: [ 'nginx', 'nginx_conf', 'nginx_virtualhost' ]
+
+- name: Install the gzip compression configuration if enabled
+  template: src=nginx-compression.conf.j2 dest=/etc/nginx/conf.d/compression.conf owner=root group=root mode=0444
+  when: nginx_enable_compression
+  notify: Reload nginx
+  tags: [ 'nginx', 'nginx_conf' ]
 
 - name: Ensure that the webserver is running
   service: name=nginx state=started enabled={{ nginx_enabled }}
-  tags:
-    - nginx
+  tags: nginx