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+# ===================
+#
+# see:
+#    - https://docs.bigbluebutton.org/administration/install/
+#
+# ===================
+
+FQDN_HOSTNAME="bbb.oopen.de"
+ADMIN_EMAIL="ckubu-adm@oopen.de"
+
+FQDN_HOSTNAME="bbb.aufstehen-gegen-rassismus.de"
+ADMIN_EMAIL="agr@vvn-bda.de"
+
+# ===
+# 1 Pre-installation checks
+# ===
+
+# see: https://docs.bigbluebutton.org/administration/install/#pre-installation-checks
+
+# ---
+# Run script bbb-pre-install.sh
+# ---
+
+# Download Repository containing the pre installation script
+#
+git clone https://git.oopen.de/install/bigbluebutton /usr/local/src/
+
+
+# Run the script 'bbb-pre-install.sh'
+#
+# The script does:
+#
+#     - installs missing debian packages
+
+#     - checks the locale parameter and sets it to 'en_US.UTF-8' if necessary
+#
+#     - Installs the latest version of Docker if necessary
+#
+/usr/local/src/bigbluebutton/bbb-pre-install.sh
+
+
+# ===
+# 2. Install BigBlueButton
+# ===
+
+
+# ---
+# Install BigBlueButton (incl. Greenligth) directly
+# ---
+
+# Download and pipe downlaoded stream directly through 'bash -s'
+#
+#     -w             Install UFW firewall (recommended)
+#     -v <version>   Install given version of BigBlueButton (e.g. 'focal-270') (required)
+#        -v jammy-300 installs the latest iteration of BigBlueButton 3.0.x .
+#        -v focal-270 installs the latest iteration of BigBlueButton 2.7.x .
+#     -s <hostname>  Configure server with <hostname>
+#     -e <email>     Email for Let's Encrypt certbot
+#     -g Install Greenlight version 3
+#
+wget -qO- https://raw.githubusercontent.com/bigbluebutton/bbb-install/v3.0.x-release/bbb-install.sh \
+   | bash -s -- -w -v jammy-300 -s ${FQDN_HOSTNAME} -e ${ADMIN_EMAIL} -g
+
+
+# !! Note !!
+#
+# If the FQHN of the BigBlueButton service is part of the '/etc/hosts' file, 
+# then BigBlueButton will not work properly, at least not if the FQHN points 
+# to a 127 IP address (e.g. 127.0.1.1).
+#
+sed -i -E "/^[[:space:]]*127.0.1.1[[:space:]]+${FQDN_HOSTNAME}/d" /etc/hosts
+if [[ -f "/etc/cloud/templates/hosts.debian.tmpl" ]] ; then
+   sed -i -E "/^127.0.1.1/d" /etc/cloud/templates/hosts.debian.tmpl
+fi
+
+
+# ---
+# Install BigBlueButton (incl. Greenligth)  by running script 'bbb-install.sh' lacally
+# ---
+
+mkdir -p /usr/local/src/bbb
+
+git clone https://github.com/bigbluebutton/bbb-install.git /usr/local/src/bbb/
+
+# run commnad 'bbb-install.sh'
+#
+#     -w             Install UFW firewall (recommended)
+#     -v <version>   Install given version of BigBlueButton (e.g. 'focal-270') (required)
+#     -s <hostname>  Configure server with <hostname>
+#     -e <email>     Email for Let's Encrypt certbot
+#     -g Install Greenlight version 3
+#
+/usr/local/src/bbb/bbb-install.sh -w -v jammy-300 -s ${FQDN_HOSTNAME} -e ${ADMIN_EMAIL} -g
+
+sed -i -E "/^[[:space:]]*127.0.1.1[[:space:]]+${FQDN_HOSTNAME}/d" /etc/hosts
+if [[ -f "/etc/cloud/templates/hosts.debian.tmpl" ]] ; then
+   sed -i -E "/^127.0.1.1/d" /etc/cloud/templates/hosts.debian.tmpl
+fi
+
+
+
+# --
+# Installation finished
+# --
+
+
+
+# ===
+# Globally disable recordings in BigBlueButton
+# ===
+
+# Server operators can overwrite default value for disableRecordingDefault initially 
+# set in /usr/share/bbb-web/WEB-INF/classes/bigbluebutton.properties by overwriting 
+# it in /etc/bigbluebutton/bbb-web.properties - 
+#
+# set disableRecordingDefault=false to disableRecordingDefault=true for globally disabling 
+# recordings. 
+#
+# Furthermore, recording of breakout rooms should be disabled by setting 
+# breakoutRoomsRecord=false. In general, this is an advisable idea (independently of 
+# disableRecordingDefault=true, because break-out rooms might imply a certain level of 
+# privacy for typical users.
+if ! $(grep -qE "^\s*disableRecordingDefault=" /etc/bigbluebutton/bbb-web.properties 2> /dev/null) ; then
+   echo "disableRecordingDefault=true" >> /etc/bigbluebutton/bbb-web.properties
+else
+   perl -i -n -p -e"s/^disableRecordingDefault.*/disableRecordingDefault=true/" /etc/bigbluebutton/bbb-web.properties
+fi
+
+if ! $(grep -qE "^\s*breakoutRoomsRecord=" /etc/bigbluebutton/bbb-web.properties 2> /dev/null) ; then
+   echo "breakoutRoomsRecord=false" >> /etc/bigbluebutton/bbb-web.properties
+else
+   perl -i -n -p -e"s/^breakoutRoomsRecord.*/breakoutRoomsRecord=false/" /etc/bigbluebutton/bbb-web.properties
+fi
+
+
+# =====================================================================================