cat /etc/default/locale

LANG="en_US.UTF-8"

apt-get install language-pack-en
update-locale LANG=en_US.UTF-8
 
#Logout aus dem root-Kontext
Exit
 
#Logout aus dem Benutzer-Kontext
Exit

nano /etc/default/locale

• Bewege den Cursor in die ensprechende Zeile
• Drücke STRG + K (Ausschneiden)
• Drücke STRG + O (Speichern)
• Drücke STRG + X (Beenden/Exit)

#Logout aus dem root-Kontext
Exit
 
#Logout aus dem Benutzer-Kontext
Exit

systemctl show-environment

LANG=en_US.UTF-8
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

  systemctl set-environment LANG=en_US.UTF-8

free -h

              total        used        free      shared  buff/cache   available
Mem:          3.8Gi       143Mi       3.2Gi       0.0Ki       505Mi       3.5Gi
Swap:         5.8Gi          0B       5.8Gi

Anmerkung: Empfohlen für einen produktiven Server sind mindestens 32GB an RAM.
Für eine Entwicklungs- und Testumgebung sind 4GB ausreichend.

cat /etc/lsb-release

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04.7 LTS"

uname -m

x86_64

Anmerkung: Zwingend erforderlich ist die 64-bit-Version.

ip addr | grep inet6

inet6 ::1/128 scope host
...

Anmerkung: Es wird dringend empfohlen, die IPv6-Unterstützung zu aktivieren.

uname -r

4.4.0-186-generic
...

cat /proc/cpuinfo | awk '/^processor/{print $3}' | wc -l

2

Anmerkung: Empfohlen für einen produktiven Server sind mindestens 4 CPUs.
Für eine Entwicklungs- und Testumgebung sind 2 CPUs ausreichend.

grep "multiverse" /etc/apt/sources.list

...
deb http://de.archive.ubuntu.com/ubuntu xenial multiverse
...
deb http://de.archive.ubuntu.com/ubuntu xenial-updates multiverse
...
deb http://de.archive.ubuntu.com/ubuntu xenial-backports main restricted universe multiverse
...
deb http://de.archive.ubuntu.com/ubuntu xenial-security multiverse

echo "deb http://archive.ubuntu.com/ubuntu/ xenial multiverse" | tee -a /etc/apt/sources.list

add-apt-repository ppa:bigbluebutton/support -y

nicht erforderlich

E: Release file for http://de.archive.ubuntu.com/ubuntu/dists/bionic-updates/InRelease is not valid yet (invalid for another 7h 38min 44s). Updates for this repository will not be applied.
E: Release file for http://de.archive.ubuntu.com/ubuntu/dists/bionic-backports/InRelease is not valid yet (invalid for another 7h 40min 14s). Updates for this repository will not be applied.
E: Release file for http://de.archive.ubuntu.com/ubuntu/dists/bionic-security/InRelease is not valid yet (invalid for another 7h 37min 22s). Updates for this repository will not be applied.

Lösung: Zeit und/oder Datum der VM sind fehlerhaft und müssen abgeglichen werden.

systemctl restart systemd-timesyncd.service

E: The repository 'http://ppa.launchpad.net/bigbluebutton/support/ubuntu focal Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

Lösung:
In diesem Fall ist eine Neuinstallation mit der Version 16.04.xLTS erforderlich.

add-apt-repository ppa:rmescandon/yq -y

nicht erforderlich

Fehlerbehebung:

add-apt-repository ppa:libreoffice/ppa

To return to the LibreOffice version from the main archive, use ppa-purge. see: http://www.webupd8.org/2009/12/remove-ppa-repositories-via-command.html for details
 More info: https://launchpad.net/~libreoffice/+archive/ubuntu/ppa
Press [ENTER] to continue or Ctrl-c to cancel adding it.

Den Disclaimer mit [ENTER] bestätigen.

Fehlerbehebung:

apt-get update
apt-get dist-upgrade

Need to get 799 kB of archives.
After this operation, 45.1 kB of additional disk space will be used.
Do you want to continue? [Y/n]

Abfrage mit [y] bzw [Y] bestätigen

An der folgenden Stelle benötigt der Vorgang mitunter mehrere Minuten in einer VM.

I: The initramfs will attempt to resume from /dev/sdc1
I: (UUID=5cd9ade9-adbb-402d-817a-800d41674c84)
I: Set the RESUME variable to override this.

Fehlerbehebung:

wget -qO - https://www.mongodb.org/static/pgp/server-3.4.asc | apt-key add -
echo "deb [ arch=amd64,arm64 ] http://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/3.4 multiverse" | tee /etc/apt/sources.list.d/mongodb-org-3.4.list
apt-get update
apt-get install -y mongodb-org curl

Anmerkung
Die für die Ubuntu-Version korrekten Pakete sind hier zu finden.

nicht erforderlich

Fehlerbehebung:

apt install openjdk-8-jdk

Need to get 82.9 MB of archives.
After this operation, 560 MB of additional disk space will be used.
Do you want to continue? [Y/n]

Die Abfrage mit [y] bestätigen

Fehlerbehebung:

curl -sL https://deb.nodesource.com/setup_8.x| sudo -E bash -
apt-get install -y nodejs

Besonderheit bei der Installation von NodeJS 8.x

root@bbb:~# curl -sL https://deb.nodesource.com/setup_8.x| sudo -E bash -
 
================================================================================
================================================================================
 
                              DEPRECATION WARNING
 
  Node.js 8.x LTS Carbon is no longer actively supported!
 
  You will not receive security or critical stability updates for this version.
 
  You should migrate to a supported version of Node.js as soon as possible.
  Use the installation script that corresponds to the version of Node.js you
  wish to install. e.g.
 
   * https://deb.nodesource.com/setup_10.x — Node.js 10 LTS "Dubnium"
   * https://deb.nodesource.com/setup_12.x — Node.js 12 LTS "Erbium" (recommended)
 
  Please see https://github.com/nodejs/Release for details about which
  version may be appropriate for you.
 
  The NodeSource Node.js distributions repository contains
  information both about supported versions of Node.js and supported Linux
  distributions. To learn more about usage, see the repository:
    https://github.com/nodesource/distributions
 
================================================================================
================================================================================
 
Continuing in 20 seconds ...

Fehlerbehebung:

wget https://ubuntu.bigbluebutton.org/repo/bigbluebutton.asc -O- | apt-key add -
# Deinstallation eines vorhandenen bbb-clients (nur bei Update erforderlich)
# bbb-conf --stop
# apt-get purge -y bbb-client
echo "deb https://ubuntu.bigbluebutton.org/xenial-22/ bigbluebutton-xenial main" | tee /etc/apt/sources.list.d/bigbluebutton.list
apt-get update

nicht erforderlich

Fehlerbehebung:

wget -qO- https://ubuntu.bigbluebutton.org/bbb-install.sh | bash -s -- -v xenial-220

nicht erforderlich

Need to get 1,173 MB of archives.
After this operation, 2,316 MB of additional disk space will be used.
Do you want to continue? [Y/n]

Die Abfrage mit [y] bestätigen Fehlerbehebung: