CAN YOU MAKE A WSL (UBUNTU) FILE SYSTEM VISIBLE FROM WINDOWS FILE EXPLORER?

Yes, in powershell, do (for example)

..user > subst W: '\\wsl$\Ubuntu-20.04\home\username\'

And you're in business. But, yes, I know what you're thinking - you don't want to do this manually. 

You want to fire up WSL TTY (mintty) and have this DONE for you!

In your Ubuntu filesystem, maintain a file ending in a .ps1 extension and containing :

subst W: '\\wsl$\Ubuntu-20.04\home\analog\'

Then, in your .profile, just have :

powershell.exe -File /path/to/subst_cmd.ps1

(FYI, Thanks Thanh Phu, do delete this mapping, you'd do subst W: /D )

And you're through. Now, here's something trickier :

Without ever leaving WSL, how would you get Windows Firewall to allow communication between WSL 

and the X-server you set up (follow Thomas Ward's excellent page to set up vcxsrv)

The answer : 

Put this command in a file somewhere on windows (not Ubuntu) :

Set-NetFirewallProfile -DisabledInterfaceAliases "vEthernet (WSL)"

Then, all you do is :

powershell.exe -Command "Start-Process powershell.exe -ArgumentList \"-File C:\path\to\ps_fw_setting_WSL.ps1\" -Verb RunAs"

Which is something you could stick in your .profile 

Installing Linux - Ubuntu WSL - Apache Openmeeting Cluster - MSSQL as db

server-1:100.112.2.56

server-2:100.112.2.57

Network:100.112.2.0/24

In this setup is used MSSQL Cluster as db, if u will want to use another type of db should be sync,replicated ... 

For this setup, location for records/stream/audio of openmeeting should be same for both servers, later u will see path /opt/openmeetings/openmeetings-server/target/apache-openmeetings-7.0.0-SNAPSHOT/webapps/openmeetings/data/streams which is an windows path as ( in this setup ) C:\Linux\ubuntu\rootfs\opt\openmeetings\openmeetings-server\target\apache-openmeetings-7.0.0-SNAPSHOT\webapps\openmeetings\data\streams

Fallow indications of actions on server-1, server-2 and on both server

On both servers.

Invoke-WebRequest -Uri https://aka.ms/wsl-ubuntu-1804 -OutFile ubuntu.appx –UseBasicParsing

 

Rename-Item .\ubuntu.appx .\ubuntu.zip

 

Re-open Windows PowerShell ISE as Administrator

$userenv =[System.Environment]::GetEnvironmentVariable("Path","User")

 

Open CMD as administrator

 

 

Enter the new user for your system

New CMD window, enter in location D:\Linux\ubuntu

Run command ubuntu1804.exe will enter you in the system with root privilegies.

Reinstall openssh-server and create Schedule-Task, on both server

 

On both servers.

visudo

%sudo ALL=NOPASSWD: /usr/sbin/sshd

service ssh --full-restart

Install prerequisites, on both server

 

#apt install imagemagick ghostscript libxt6 libxrender1 ffmpeg vlc sox openjdk-11-jdk openjdk-11-jdk-headless libjpeg62 zlib1g-dev openssl maven

 

#vim /etc/ImageMagick-6/policy.xml

...and comment the two follow lines, near to bottom file:

<policy domain="coder" rights="none" pattern="PS" />

<policy domain="coder" rights="none" pattern="PDF" />

 

...to:

 

<!-- <policy domain="coder" rights="none" pattern="PS" /> -->

<!-- <policy domain="coder" rights="none" pattern="PDF" /> -->

 

Fallow install steps of kurento media server – on both servers.

https://doc-kurento.readthedocs.io/en/stable/user/installation.html#local-installation

#vim /etc/default/kurento-media-server

replace

DAEMON_USER="kurento"

...to

DAEMON_USER="nobody"

 

 

After Kurento Media Server – install coturn STUN/TUN server if behind a NAT

https://doc-kurento.readthedocs.io/en/stable/user/faq.html#faq-coturn-install

or

Install Coturn (Turn server), on both server:

#apt install coturn

...we edit the following file so that the Turn server can work:

# vim /etc/default/coturn

...and we uncomment the line:

#TURNSERVER_ENABLED=1

….leaving it like this:

TURNSERVER_ENABLED=1

Now we'll set up Turn. Created a folder where turn server store the logs:

#mkdir -p /var/log/turnserver

...create a password that we'll need to put it in the configuration file of the turn server and later in an

OpnMeetings file. We created it:

#openssl rand -hex 32

...will generate something similar to this:

751c45cae60a2839711a94c8d6bf0089e78b2149ca602fdXXXXXXXXXXXXXXXXX

…copy that long password and paste it into a text file by saving it.

Edit the turn configuration file:

#vim /etc/turnserver.conf

...in this file we will have to uncomment (delete #) only the following lines:

use-auth-secret

static-auth-secret=751c45cae60a2839711a94c8d6bf0089e78b2149ca602fdXXXXXXXXXXXXX

(on the above line put the long password we just saved in a text file)

realm=your_real_domain ...change company.org to your real domain

stale-nonce=0 ...change 600 to 0 (zero)

log-file=/var/log/turnserver/turnserver.log .

(above change /var/log/turnserver.log to /var/log/turnserver/turnserver.log)

 

 

Install LibreOffice 7.2.3.2 – both servers

#add-apt-repository ppa:libreoffice/ppa

#apt update

#apt install libreoffice

Install MariaDB 10.1 ( if no other database engine ) – excluded from this setup. Is MSSQL used.

( No install, on both servers )

#apt install install mariadb-server

#mysql_secure_installation

Create database and user for openmeeting

#mysqladmin -u root password colanda1

 

MariaDB [(none)]> CREATE DATABASE open620 DEFAULT CHARACTER SET 'utf8';

MariaDB [(none)]> GRANT ALL PRIVILEGES ON open620.* TO 'openmeeting'@'localhost' IDENTIFIED BY '1a2B3c4D' WITH GRANT OPTION;

MariaDB [(none)]> FLUSH PRIVILEGES;

* open620 ......is the database name.

* openmeeting ………is the user name for this database.

* 1a2B3c4D ..is the password for this user.

 

Install Openmeeting 6.2.0 ( 7.0.0 released 3 ) – on both servers.

 

#cd /opt

...get and build from source the OpenMeetings:

#cd /opt

#git clone https://github.com/apache/openmeetings.git

...build it:

#cd openmeetings 

#mvn clean install -P allModules

...untar archive:

#cd /opt/openmeetings/openmeetings-server/target/

#tar -zxvf apache-openmeetings-7.0.0-SNAPSHOT.tar.gz

We make some folders for the recordings we´ll make at the different OpenMeetings rooms:

#mkdir -p /opt/openmeetings/openmeetings-server/target/apache-openmeetings-7.0.0-SNAPSHOT/webapps/openmeetings/data/streams/{1,2,3,4,5,6,7,8,9,10,11,12,13,14}

#mkdir -p /opt/openmeetings/openmeetings-server/target/apache-openmeetings-7.0.0-SNAPSHOT/webapps/openmeetings/data/streams/hibernate

...restrict the access to these folders:

#chmod -R 750 /opt/openmeetings/openmeetings-server/target/apache-openmeetings-7.0.0-SNAPSHOT/webapps/openmeetings/data/streams

...and we do to “nobody” user ownner of OpenMeetings installation folder:

#chown -R nobody:nogroup /opt/openmeetings/openmeetings-server/target/apache-openmeetings-7.0.0-SNAPSHOT

Download and install the connector between OpenMeetings and MariaDB ( if no other database engine ):

#cd /opt

#wget https://repo1.maven.org/maven2/mysql/mysql-connector-java/8.0.27/mysql-connector-java-8.0.27.jar

...and copy it to where must be:

#cp /opt/mysql-connector-java-8.0.27.jar /opt/openmeetings/openmeetings-server/target/apache-openmeetings-7.0.0-SNAPSHOT/webapps/openmeetings/WEB-INF/lib

 

Script to launch Tomcat-OpenMeetings – on both servers.

 

Create file /etc/init.d/tomcat4 with …

#!/bin/sh

# set the environment

# JAVA_OPTS="-Djava.awt.headless=true -Djava.security.egd=file:/dev/./urandom"

# CATALINA_OPTS=""

export JAVA_OPTS="-Djava.awt.headless=true"

CATALINA_HOME=/opt/openmeetings/openmeetings-server/target/apache-openmeetings-7.0.0-SNAPSHOT

#set TIMEOUT values

#TIMELIMIT=10

#SLEEPTIME=40

# Function to wait until all Tomcat processes are killed

waitForTomcatToDie()

{

  PROCESSES=`ps auxwww | grep $HOME | grep 'java' | grep 'tomcat' | grep -v 'grep'`

  while [ ! -z "${PROCESSES}" ] && [ ${SECONDS} -lt ${TIMELIMIT} ] && [ ${TIMELIMIT} -ne 0 ]; do

    echo -n "."

    sleep ${SLEEPTIME}

    PROCESSES=`ps auxwww | grep $USER | grep 'java' | grep 'tomcat' | grep -v 'grep'`

  done

  echo ""

  if [ ! -z "${PROCESSES}" ]; then

    PROCESS_ID=`echo ${PROCESSES} | awk '{ print $2 }'`

    echo "Killing process: ${PROCESS_ID}"

    kill -9 ${PROCESS_ID}

  fi

}

# See how we were called.

case "$1" in

start)

  #$CATALINA_HOME/bin/startup.sh

  cd ${CATALINA_HOME}

  sudo --preserve-env=CATALINA_HOME --preserve-env=JAVA_OPTS -u nobody ${CATALINA_HOME}/bin/startup.sh

  ;;

#debug)

  #DEBUG_PORT=10001

  #;;

stop)

  cd ${CATALINA_HOME}

  sudo --preserve-env=CATALINA_HOME -u nobody ${CATALINA_HOME}/bin/shutdown.sh

  waitForTomcatToDie

  echo "...Tomcat stopped."

  ;;

restart)

  $0 stop

  echo "...Restarting..."

  sleep 8

  $0 start

  ;;

status)

  status ${PROG} -p ${PIDFILE}

  RETVAL=$?

  ;;

*)

  echo "Usage: $0 {start|stop|restart|status}"

  RETVAL=1

esac

exit ${RETVAL}

...and concede permission of execution:

#chmod +x /etc/init.d/tomcat4

Run Tomcat-OpenMeetings

Start MariaDB, if still it is not ( if no other database engine ): ( No need in this setup )

# /etc/init.d/mysql start

...and now start tomcat-OpenMeetings, only server-1:

#/etc/init.d/tomcat4 start

 

Openmeeting link: https://localhost:5443/openmeetings

Configuration with MSSQL – server-1 ( only one server –first node )

 

 

 

Configure Cluster node between server-1 and server-2

On server-1 and server-2 stop service of opemeeting.

#/etc/init.d/tomcat4 stop

Application might not stop and check

#ps –aux | grep tomcat

Ex:

Take pid id and kill it

#kill -9 21887 21684 21510 21030 19655

 

Configure persistence.xml server-1

#vim /opt/openmeetings/openmeetings-server/target/apache-openmeetings-7.0.0-SNAPSHOT/webapps/openmeetings/WEB-INF/classes/META-INF/persistence.xml

Add

<property name="openjpa.RemoteCommitProvider" value="tcp(Addresses=100.112.2.56;100.112.2.57)" />

Comment

  <!--property name="openjpa.RemoteCommitProvider" value="tcp(Addresses=100.112.2.56)" /-->

 

Configure hazelcast.xml server-1:

#vim /opt/openmeetings/openmeetings-server/target/apache-openmeetings-7.0.0-SNAPSHOT/webapps/openmeetings/WEB-INF/classes/hazelcast.xml

Add cluster name

<cluster-name>production</cluster-name>

Instance name must be unique

<instance-name>server-1</instance-name>

Attribute name must be same as Instance name

<attribute name="name">server-1</attribute>

Server URL

<attribute name="server.url">https://100.112.2.56:5443/openmeetings</attribute>

 

And network tag should be this

<network>

                <join>

                        <auto-detection enabled="false"/>

                        <multicast enabled="false"/>

                        <tcp-ip enabled="true">

                                <members>100.112.2.56,100.112.2.57</members>

            </tcp-ip>

                        <aws enabled="false"/>

                </join>

                <interfaces enabled="true">

            <interface>100.112.2.*</interface>

        </interfaces>

        </network>

 

hazelcast.discovery.enabled  must be commented like in this image

<!--property name="hazelcast.discovery.enabled">false</property-->

 

 

 

Configure hazelcast.xml server-2:

#vim /opt/openmeetings/openmeetings-server/target/apache-openmeetings-7.0.0-SNAPSHOT/webapps/openmeetings/WEB-INF/classes/hazelcast.xml

Add cluster name

<cluster-name>production</cluster-name>

Instance name must be unique

<instance-name>server-2</instance-name>

Attribute name must be same as Instance name

<attribute name="name">server-2</attribute>

Server URL

<attribute name="server.url">https://100.112.2.57:5443/openmeetings</attribute>

 

And network tag should be this

<network>

                <join>

                        <auto-detection enabled="false"/>

                        <multicast enabled="false"/>

                        <tcp-ip enabled="true">

                                <members>100.112.2.56,100.112.2.57</members>

            </tcp-ip>

                        <aws enabled="false"/>

                </join>

                <interfaces enabled="true">

            <interface>100.112.2.*</interface>

        </interfaces>

        </network>

 

hazelcast.discovery.enabled  must be commented like in this image

<!--property name="hazelcast.discovery.enabled">false</property-->

 

 

 

Configure persistence.xml server-2

Copy from server-1 /opt/openmeetings/openmeetings-server/target/apache-openmeetings-7.0.0-SNAPSHOT/webapps/openmeetings/WEB-INF/classes/META-INF/persistence.xml

Back-ul old file and replace with the content from server-1 file.

#cp /opt/openmeetings/openmeetings-server/target/apache-openmeetings-7.0.0-SNAPSHOT/webapps/openmeetings/WEB-INF/classes/META-INF/persistence.xml /opt/openmeetings/openmeetings-server/target/apache-openmeetings-7.0.0-SNAPSHOT/webapps/openmeetings/WEB-INF/classes/META-INF/persistence.xml.old

#vim /opt/openmeetings/openmeetings-server/target/apache-openmeetings-7.0.0-SNAPSHOT/webapps/openmeetings/WEB-INF/classes/META-INF/persistence.xml

Add content from server-1 file of persistence.xml to look same.

 

 

...and now start tomcat-OpenMeetings, on both servers:

#/etc/init.d/tomcat4 start

 

 

IF coturn got installed, openmeeting behind NAT

 

Edit the openmeetings.properties file of OpenMeetings – on both servers:

#vim /opt/openmeetings/openmeetings-server/target/apache-openmeetings-7.0.0-SNAPSHOT/ /webapps/openmeetings/WEB-INF/classes/openmeetings.properties

...and in the ### Kurento ### section we modify only the following lines:

#### Kurento ###

kurento.turn.url=

kurento.turn.user=

kurento.turn.secret=

...to

kurento.turn.url=Public IP of your server:3478

kurento.turn.user=

kurento.turn.secret=751c45cae60a2839711a94c8d6bf0089e78b2149ca602fdXXXXXXXXXXXXX

 

...above, in:

 

kurento.turn.secret=751c45cae60a2839711a94c8d6bf0089e78b2149ca602fdXXXXXXXXXXXXX

...replace the line: 751c45cae60a2839711a94c8d6bf0089e78b2149ca602fdXXXXXXXXXXXXX

...by the long password that we generated at coturn installation and that we save in a text file

 

Now will make nobody owner of the OpenMeetings installation directory, on both servers:

#chown -R nobody:nogroup /opt/openmeetings/openmeetings-server/target/apache-openmeetings-7.0.0-SNAPSHOT

 

Restart coturn:

#/etc/init.d/coturn restart

Kurento:

#/etc/init.d/kurento-media-server restart

Tomcat-OpenMeetings:

#/etc/init.d/tomcat4 restart

 

Open ports required

3478 TCP-UDP IN

5443 TCP IN

8888 TCP IN

49152:65535 UDP IN-OUT

5701 TCP IN

5080 TCP IN

22 TCP IN

 

Checking cluster status:

Log in on both servers links, server-1 and server-2

Link server-1: https://100.112.2.56:5443/openmeetings/signin

Link server-2: https://100.112.2.57:5443/openmeetings/signin

You can now login really to node1 and node2 of your cluster while those users are loggedin and go to Administration > Connections and check in the column "Server Name" where they are located. They should be on different server.

 

The End