diff --git a/seqs/mysql.sh b/seqs/mysql.sh
new file mode 100755
index 0000000..1e61e93
--- /dev/null
+++ b/seqs/mysql.sh
@@ -0,0 +1,166 @@
+#!/bin/bash
+
+# Mysql management using mariadb
+
+databaseName="mariadb"
+databasePackages="mariadb-server mariadb-client"
+
+step_1_info() { 
+  echo "Installation of ${databaseName} packages:"
+  echoinfo "$databasePackages"
+}
+step_1_alias() { ALIAS=install; }
+step_1() {
+  exe apt update
+  exe apt install $databasePackages
+  endReturn -o $? "Error instaling $databaseName"
+}
+
+step_2_info() { echo "Secure ${databaseName} installation"; }
+step_2() {
+  exe mysql_secure_installation
+}
+
+step_3_info() { echo -e "${databaseName} configuration\n"; }
+step_3() {
+  addConf -c "$mariadbConfig" "$mariadbConfigLoc"
+
+  echo -n "Restarting mysql ... "
+  exe service mysql restart && echo "ok"
+}
+mariadbConfigLoc="/etc/mysql/mariadb.conf.d/90-myconfig.cnf"
+mariadbConfig="[mysqld]
+innodb_large_prefix=on
+innodb_file_format=barracuda
+innodb_file_per_table=true
+
+lower_case_table_names=0
+
+#innodb_force_recovery=6"
+
+step_10_info() { echo "Create mysql database without specific characterset"; }
+step_10_alias() { ALIAS="createdb"; }
+step_10() {
+  local mysqlDatabase
+  local mysqlUser
+  local mysqlPass
+
+  echo " [I] Existing mysql databases:"
+  exe mysql -u root -e 'SHOW DATABASES;'
+
+  read -p "Enter database name: " mysqlDatabase
+  endCheckEmpty mysqlDatabase "database name"
+  exe mysql -u root -e 'CREATE DATABASE '$mysqlDatabase';'
+  endReturn -o $? "Cannot create database $mysqlDatabase"
+
+  echo " [I] Existing mysql user:"
+  exe mysql -u root -e 'SELECT User, Host FROM mysql.user;'
+  read -p "Enter mysql user name: " mysqlUser
+  endCheckEmpty mysqlUser "user name"
+
+  read -s -p "Enter mysql user password: " mysqlPass
+  endCheckEmpty mysqlPass "password"
+  exe mysql -u root -e 'CREATE USER '"'"$mysqlUser"'"'@'"'"'localhost'"'"' IDENTIFIED BY '"'"$mysqlPass"'"';'
+  saveReturn $?
+  endReturn
+
+  exe mysql -u root -e 'GRANT ALL PRIVILEGES ON '$mysqlDatabase'.* TO '"'"$mysqlUser"'"'@'"'"'localhost'"'"';'
+  saveReturn $?
+  endReturn
+
+  exe mysql -u root -e 'FLUSH PRIVILEGES;'
+}
+
+step_12_info() { echo -e "Create mysql database with characterset utf8mb4\n"; }
+step_12_alias() { ALIAS="createdb_utf8mb4"; }
+step_12() {
+  local mysqlDatabase
+  local mysqlUser
+  local mysqlPass
+
+  echo "Existing mysql databases:"
+  exe mysql -u root -e 'SHOW DATABASES;'
+
+  read -p "Enter database name: " mysqlDatabase
+  endCheckEmpty mysqlDatabase "database name"
+  # it is recommended NOT to use utf8mb4_general_ci anymore
+  exe mysql -u root -e 'CREATE DATABASE '$mysqlDatabase' CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;'
+  endReturn -o $? "Cannot create database $mysqlDatabase"
+
+  echo "Existing mysql user:"
+  exe mysql -u root -e 'SELECT User, Host FROM mysql.user;'
+  read -p "Enter mysql user name: " mysqlUser
+  endCheckEmpty mysqlUser "user name"
+
+  read -s -p "Enter mysql user password: " mysqlPass
+  endCheckEmpty mysqlPass "password"
+  exe mysql -u root -e 'CREATE USER '"'"$mysqlUser"'"'@'"'"'localhost'"'"' IDENTIFIED BY '"'"$mysqlPass"'"';'
+  saveReturn $?
+  endReturn
+
+  exe mysql -u root -e 'GRANT ALL PRIVILEGES ON '$mysqlDatabase'.* TO '"'"$mysqlUser"'"'@'"'"'localhost'"'"';'
+  saveReturn $?
+  endReturn
+
+  exe mysql -u root -e 'FLUSH PRIVILEGES;'
+}
+
+step_14_info() { echo "List mysql databases"; }
+step_14_alias() { ALIAS="listdb"; }
+step_14() {
+  exe mysql -u root -e 'SHOW DATABASES;'
+  echo -e "\nDrop userdb by: mysql -u root -e 'DROP DATABASE userdb;'"
+}
+
+step_16_info() { echo "List mysql user"; }
+step_16_alias() { ALIAS="listdbuser"; }
+step_16() {
+  exe mysql -u root -e 'SELECT User, Host FROM mysql.user;'
+  echo -e "\nDrop dbuser by: mysql -u root -e 'DROP USER dbuser@localhost;'"
+}
+
+step_18_info() { echo "Size of database [DATABASE_NAME]"; }
+step_18_alias() { ALIAS="sizedb"; }
+step_18() {
+  if [ -z "$2" ]; then
+    echo "Please provide a database name. e.g. $0 sizedb mydb_db"
+  else
+    exe mysql -u root -e 'SELECT table_schema "DB Name",
+    ROUND(SUM(data_length + index_length) / 1024 / 1024, 1) "DB Size in MB" 
+    FROM information_schema.tables 
+    WHERE table_schema="'$2'"
+    GROUP BY table_schema;'
+  fi
+}
+
+step_20_info() { echo "Backup and restore a mysql database"; }
+step_20_alias() { ALIAS="backup"; }
+step_20() {
+  echo "Dump the existing database with:"
+  echo "  mysqldump --single-transaction nextcloud_db > NextcloudBackup_DB_\`date +\"%Y%m%d\"\`.sql"
+  echo
+  echo "Restore with:"
+  echo "  mysql -e \"DROP DATABASE nextcloud_db\""
+  echo "  mysql -e \"CREATE DATABASE nextcloud_db\""
+  echo "  mysql nextcloud_db < NextcloudBackup_DB_20170912.sql"
+}
+
+# Read database information dbname/user/pass if empty
+readDatabaseInfos() {
+  if [ "$dbName" == "" ] ; then
+    read -p "Enter postgres database name: " dbName
+    endCheckEmpty dbName "database"
+  fi
+  if [ "$dbUser" == "" ] ; then
+    read -p "Enter postgres user name: " dbUser
+    endCheckEmpty dbUser "user name"
+  fi
+  if [ "$dbPass" == "" ] ; then
+    read -s -p "Enter postgres password: " dbPass
+    endCheckEmpty postgresPass "password"
+  fi
+  echo
+}
+
+VERSION_SEQREV=9
+. /usr/local/bin/sequencer.sh
diff --git a/seqs/webserver.sh b/seqs/webserver.sh
index 295065e..7db8d60 100755
--- a/seqs/webserver.sh
+++ b/seqs/webserver.sh
@@ -2,19 +2,17 @@
 
 serverName="nginx"
 serverPackages="nginx"
-databaseName="mariadb"
-databasePackages="mariadb-server mariadb-client"
 phpVersion="7.3"
 phpName="php${phpVersion}"
 phpPackages="${phpName}-fpm ${phpName}-json ${phpName}-mysql ${phpName}-curl ${phpName}-intl ${phpName}-gd ${phpName}-zip ${phpName}-xml ${phpName}-mbstring php-imagick php-apcu"
 
-step_1_info() { echo -e "Installation of $serverName and ${databaseName} packages:\n                $serverPackages $databasePackages"; }
+step_1_info() { 
+  echo "Installation of $serverName packages:"
+  echoinfo "$serverPackages"
+}
 step_1_alias() { ALIAS=install; }
 step_1() {
   exe apt update
-  exe apt install $databasePackages
-  saveReturn $?
-  endReturn
   exe apt install $serverPackages
   saveReturn $?
   endReturn
@@ -42,13 +40,12 @@ step_2() {
   saveReturn $?
   endReturn
 }
-
 snippetLetsencryptLoc="/etc/nginx/snippets/letsencrypt.conf"
 siteLetsencryptWww="/var/www/letsencrypt"
 snippetLetsencrypt="\
-  location ^~ /.well-known/acme-challenge/ {
-  default_type \"text/plain\";
-  root ${siteLetsencryptWww};
+location ^~ /.well-known/acme-challenge/ {
+default_type \"text/plain\";
+root ${siteLetsencryptWww};
 }"
 siteDefaultLoc="/etc/nginx/sites-available/default"
 siteDefaultIp4="server {
@@ -57,174 +54,39 @@ listen 80 default_server;
 include ${snippetLetsencryptLoc}; 
 }"
 
-step_3_info() { echo "Secure mariadb installation"; }
+step_3_info() { echo "Installation of $phpName packages:"
+  echoinfo "$phpPackages"; }
 step_3() {
-  exe mysql_secure_installation
-}
-
-step_4_info() { echo "Mariadb configuration"; }
-step_4() {
-  addConf -c "$mariadbConfig" "$mariadbConfigLoc"
-
-  echo -n "Restarting mysql ... "
-  exe service mysql restart && echo "ok"
-}
-
-mariadbConfigLoc="/etc/mysql/mariadb.conf.d/90-myconfig.cnf"
-mariadbConfig="\
-  [mysqld]
-  innodb_large_prefix=on
-  innodb_file_format=barracuda
-  innodb_file_per_table=true
-
-  lower_case_table_names=0
-
-#innodb_force_recovery=6"
-
-step_5_info() { echo -e "Installation of $phpName packages:\n                $phpPackages"; }
-step_5() {
   exe apt install $phpPackages
 }
-
 phpFpmConfigLocation="/etc/php/${phpVersion}/fpm/conf.d/90-custom_pi.ini"
-phpFpmConfig="\
-  post_max_size=64M
-  upload_max_filesize=100M
-  max_execution_time=600
+phpFpmConfig="post_max_size=64M
+upload_max_filesize=100M
+max_execution_time=600
 
-  apc.enable_cli=1
+apc.enable_cli=1
 
-  date.timezone = Europe/Berlin
+date.timezone = Europe/Berlin
 
-  opcache.enable=1
-  opcache.enable_cli=1
-  opcache.interned_strings_buffer=8
-  opcache.max_accelerated_files=10000
-  opcache.memory_consumption=128
-  opcache.save_comments=1
-  opcache.revalidate_freq=1"
+opcache.enable=1
+opcache.enable_cli=1
+opcache.interned_strings_buffer=8
+opcache.max_accelerated_files=10000
+opcache.memory_consumption=128
+opcache.save_comments=1
+opcache.revalidate_freq=1"
+phpCliConfigLocation="/etc/php/${phpVersion}/cli/conf.d/90-custom_pi.ini"
+phpCliConfig="\
+date.timezone = Europe/Berlin"
 
-  phpCliConfigLocation="/etc/php/${phpVersion}/cli/conf.d/90-custom_pi.ini"
-  phpCliConfig="\
-    date.timezone = Europe/Berlin"
+step_4_info() { echo -e "Configuration of ${phpName} fpm and cli\n"; }
+step_4() {
+  addConf -c "$phpFpmConfig" "$phpFpmConfigLocation"
+  addConf -c "$phpCliConfig" "$phpCliConfigLocation"
 
-  step_6_info() { echo -e "Configuration of ${phpName} fpm and cli\n"; }
-  step_6() {
-    addConf -c "$phpFpmConfig" "$phpFpmConfigLocation"
-    addConf -c "$phpCliConfig" "$phpCliConfigLocation"
-
-    echo -n "Restarting ${phpName} ... "
-    exe service ${phpName}-fpm restart && echo "ok"
-  }
-
-step_10_info() { echo -e "Create mysql database without specific characterset\n"; }
-step_10_alias() { ALIAS="createdb"; }
-step_10() {
-  local mysqlDatabase
-  local mysqlUser
-  local mysqlPass
-
-  echo "Existing mysql databases:"
-  exe mysql -u root -e 'SHOW DATABASES;'
-
-  read -p "Enter database name: " mysqlDatabase
-  endCheckEmpty mysqlDatabase "database name"
-  exe mysql -u root -e 'CREATE DATABASE '$mysqlDatabase';'
-  saveReturn $?
-  endReturn
-
-  echo "Existing mysql user:"
-  exe mysql -u root -e 'SELECT User, Host FROM mysql.user;'
-  read -p "Enter mysql user name: " mysqlUser
-  endCheckEmpty mysqlDatabase "user name"
-
-  read -s -p "Enter mysql user password: " mysqlPass
-  endCheckEmpty mysqlPass "password"
-  exe mysql -u root -e 'CREATE USER '"'"$mysqlUser"'"'@'"'"'localhost'"'"' IDENTIFIED BY '"'"$mysqlPass"'"';'
-  saveReturn $?
-  endReturn
-
-  exe mysql -u root -e 'GRANT ALL PRIVILEGES ON '$mysqlDatabase'.* TO '"'"$mysqlUser"'"'@'"'"'localhost'"'"';'
-  saveReturn $?
-  endReturn
-
-  exe mysql -u root -e 'FLUSH PRIVILEGES;'
+  echo -n "Restarting ${phpName} ... "
+  exe service ${phpName}-fpm restart && echo "ok"
 }
 
-step_12_info() { echo -e "Create mysql database with characterset utf8mb4\n"; }
-step_12_alias() { ALIAS="createdb_utf8mb4"; }
-step_12() {
-  local mysqlDatabase
-  local mysqlUser
-  local mysqlPass
-
-  echo "Existing mysql databases:"
-  exe mysql -u root -e 'SHOW DATABASES;'
-
-  read -p "Enter database name: " mysqlDatabase
-  endCheckEmpty mysqlDatabase "database name"
-  # it is recommended NOT to use utf8mb4_general_ci anymore
-  exe mysql -u root -e 'CREATE DATABASE '$mysqlDatabase' CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;'
-  saveReturn $?
-  endReturn
-
-  echo "Existing mysql user:"
-  exe mysql -u root -e 'SELECT User, Host FROM mysql.user;'
-  read -p "Enter mysql user name: " mysqlUser
-  endCheckEmpty mysqlDatabase "user name"
-
-  read -s -p "Enter mysql user password: " mysqlPass
-  endCheckEmpty mysqlPass "password"
-  exe mysql -u root -e 'CREATE USER '"'"$mysqlUser"'"'@'"'"'localhost'"'"' IDENTIFIED BY '"'"$mysqlPass"'"';'
-  saveReturn $?
-  endReturn
-
-  exe mysql -u root -e 'GRANT ALL PRIVILEGES ON '$mysqlDatabase'.* TO '"'"$mysqlUser"'"'@'"'"'localhost'"'"';'
-  saveReturn $?
-  endReturn
-
-  exe mysql -u root -e 'FLUSH PRIVILEGES;'
-}
-
-step_14_info() { echo "List mysql databases"; }
-step_14_alias() { ALIAS="listdb"; }
-step_14() {
-  exe mysql -u root -e 'SHOW DATABASES;'
-  echo -e "\nDrop userdb by: mysql -u root -e 'DROP DATABASE userdb;'"
-}
-
-step_16_info() { echo "List mysql user"; }
-step_16_alias() { ALIAS="listdbuser"; }
-step_16() {
-  exe mysql -u root -e 'SELECT User, Host FROM mysql.user;'
-  echo -e "\nDrop dbuser by: mysql -u root -e 'DROP USER dbuser@localhost;'"
-}
-
-step_18_info() { echo "Size of database [DATABASE_NAME]"; }
-step_18_alias() { ALIAS="sizedb"; }
-step_18() {
-  if [ -z "$2" ]; then
-    echo "Please provide a database name. e.g. $0 sizedb mydb_db"
-  else
-    exe mysql -u root -e 'SELECT table_schema "DB Name",
-          ROUND(SUM(data_length + index_length) / 1024 / 1024, 1) "DB Size in MB" 
-          FROM information_schema.tables 
-          WHERE table_schema="'$2'"
-          GROUP BY table_schema;'
-  fi
-}
-
-step_20_info() { echo "Backup and restore a mysql database"; }
-step_20_alias() { ALIAS="backup"; }
-step_20() {
-  echo "Dump the existing database with:"
-  echo "  mysqldump --single-transaction nextcloud_db > NextcloudBackup_DB_\`date +\"%Y%m%d\"\`.sql"
-  echo
-  echo "Restore with:"
-  echo "  mysql -e \"DROP DATABASE nextcloud_db\""
-  echo "  mysql -e \"CREATE DATABASE nextcloud_db\""
-  echo "  mysql nextcloud_db < NextcloudBackup_DB_20170912.sql"
-}
-
-VERSION_SEQREV=5
-. sequencer.sh
+VERSION_SEQREV=9
+. /usr/local/bin/sequencer.sh
diff --git a/seqs/webserverUbuntu.sh b/seqs/webserverUbuntu.sh
index de706b5..0410133 100755
--- a/seqs/webserverUbuntu.sh
+++ b/seqs/webserverUbuntu.sh
@@ -2,18 +2,15 @@
 
 serverName="nginx"
 serverPackages="nginx"
-databaseName="mariadb"
-databasePackages="mariadb-server mariadb-client"
 phpVersion="7.2"
 phpName="php$phpVersion"
 phpPackages="${phpName}-fpm ${phpName}-json ${phpName}-mysql ${phpName}-curl ${phpName}-intl ${phpName}-gd ${phpName}-zip ${phpName}-xml ${phpName}-mbstring php-imagick php-apcu"
 
-step_1_info() { echo -e "Installation of $serverName and ${databaseName} packages:\n                $serverPackages $databasePackages"; }
+step_1_info() { echo "Installation of $serverName packages:"
+  echoinfo "$serverPackages"; }
 step_1_alias() { ALIAS="install"; }
 step_1() {
   exe apt update
-  exe apt install $databasePackages
-  endReturn -o $? "Database package installation error"
   exe apt install $serverPackages
   endReturn -o $? "Server package installation error"
 }
@@ -39,7 +36,6 @@ step_2() {
   exe service nginx restart && echo "ok"
   endReturn -o $? "Nginx error during startup"
 }
-
 snippetLetsencryptLoc="/etc/nginx/snippets/letsencrypt.conf"
 siteLetsencryptWww="/var/www/letsencrypt"
 snippetLetsencrypt="\
@@ -54,38 +50,12 @@ siteDefaultIp4="server {
   include ${snippetLetsencryptLoc}; 
 }"
 
-step_3_info() { echo "Secure mariadb installation"; }
+step_3_info() { echo "Installation of $phpName packages:"
+  echoinfo "$phpPackages"; }
 step_3() {
-  exe mysql_secure_installation
-}
-
-step_4_info() { echo "Mariadb configuration"; }
-step_4() {
-  addConf -c "$mariadbConfig" "$mariadbConfigLoc"
-  
-  echo -n " [I] Restarting mysql ... "
-  exe service mysql restart
-  endReturn -o $? "Mariadb error during startup"
-  echo "ok"
-}
-
-mariadbConfigLoc="/etc/mysql/mariadb.conf.d/90-myconfig.cnf"
-mariadbConfig="\
-[mysqld]
-innodb_large_prefix=on
-innodb_file_format=barracuda
-innodb_file_per_table=true
-
-lower_case_table_names=0
-
-#innodb_force_recovery=6"
-
-step_5_info() { echo -e "Installation of $phpName packages:\n                $phpPackages"; }
-step_5() {
   exe apt install $phpPackages
   endReturn -o $? "$phpName error during startup"
 }
-
 phpFpmConfigLocation="/etc/php/${phpVersion}/fpm/conf.d/90-custom_pi.ini"
 phpFpmConfig="\
 post_max_size=64M
@@ -107,8 +77,8 @@ phpCliConfigLocation="/etc/php/${phpVersion}/cli/conf.d/90-custom_pi.ini"
 phpCliConfig="\
 date.timezone = Europe/Berlin"
 
-step_6_info() { echo -e "Configuration of ${phpName} fpm and cli\n"; }
-step_6() {
+step_4_info() { echo -e "Configuration of ${phpName} fpm and cli\n"; }
+step_4() {
   addConf -c "$phpFpmConfig" "$phpFpmConfigLocation"
   addConf -c "$phpCliConfig" "$phpCliConfigLocation"
 
@@ -118,75 +88,5 @@ step_6() {
   echo "ok"
 }
 
-step_10_info() { echo -e "Create mysql database without specific characterset\n"; }
-step_10_alias() { ALIAS="createdb"; }
-step_10() {
-  local mysqlDatabase
-  local mysqlUser
-  local mysqlPass
-
-  echo "Existing mysql databases:"
-  exe mysql -u root -e 'SHOW DATABASES;'
-
-  read -p "Enter database name: " mysqlDatabase
-  endCheckEmpty mysqlDatabase "database name"
-  exe mysql -u root -e 'CREATE DATABASE '$mysqlDatabase';'
-  saveReturn $?
-  endReturn
-
-  echo "Existing mysql user:"
-  exe mysql -u root -e 'SELECT User, Host FROM mysql.user;'
-  read -p "Enter mysql user name: " mysqlUser
-  endCheckEmpty mysqlDatabase "user name"
-
-  read -p "Enter mysql user password: " mysqlPass
-  endCheckEmpty mysqlPass "password"
-  exe mysql -u root -e 'CREATE USER '"'"$mysqlUser"'"'@'"'"'localhost'"'"' IDENTIFIED BY '"'"$mysqlPass"'"';'
-  saveReturn $?
-  endReturn
-
-  exe mysql -u root -e 'GRANT ALL PRIVILEGES ON '$mysqlDatabase'.* TO '"'"$mysqlUser"'"'@'"'"'localhost'"'"';'
-  saveReturn $?
-  endReturn
-
-  exe mysql -u root -e 'FLUSH PRIVILEGES;'
-}
-
-step_12_info() { echo -e "Create mysql database with characterset utf8mb4\n"; }
-step_12_alias() { ALIAS="createdb_utf8mb4"; }
-step_12() {
-  local mysqlDatabase
-  local mysqlUser
-  local mysqlPass
-
-  echo "Existing mysql databases:"
-  exe mysql -u root -e 'SHOW DATABASES;'
-
-  read -p "Enter database name: " mysqlDatabase
-  endCheckEmpty mysqlDatabase "database name"
-  # it is recommended NOT to use utf8mb4_general_ci anymore
-  exe mysql -u root -e 'CREATE DATABASE '$mysqlDatabase' CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;'
-  saveReturn $?
-  endReturn
-
-  echo "Existing mysql user:"
-  exe mysql -u root -e 'SELECT User, Host FROM mysql.user;'
-  read -p "Enter mysql user name: " mysqlUser
-  endCheckEmpty mysqlDatabase "user name"
-
-  read -p "Enter mysql user password: " mysqlPass
-  endCheckEmpty mysqlPass "password"
-  exe mysql -u root -e 'CREATE USER '"'"$mysqlUser"'"'@'"'"'localhost'"'"' IDENTIFIED BY '"'"$mysqlPass"'"';'
-  saveReturn $?
-  endReturn
-
-  exe mysql -u root -e 'GRANT ALL PRIVILEGES ON '$mysqlDatabase'.* TO '"'"$mysqlUser"'"'@'"'"'localhost'"'"';'
-  saveReturn $?
-  endReturn
-
-  exe mysql -u root -e 'FLUSH PRIVILEGES;'
-}
-
-VERSION_SEQREV=7
-
-. sequencer.sh
+VERSION_SEQREV=9
+. /usr/local/bin/sequencer.sh