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3masterLocal.sh

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+sudo apt update 
+sudo apt upgrade -y 
+# Installing a terminal browser
+sudo apt-get install lynx -y
+# Finding out the worker1IP
+network=$(ifconfig | grep inet |  sed -n 1p | awk "{print \$2}" | cut -f 1-3 -d "."  | sed 's/$/.*/')    
+worker1IP=$(nmap -sP $network | grep worker_1 | awk '{print $NF}' | tr -d '()')
+# Local Forwarding
+#connecting via ssh to worker1 and asking to forward 
+#the service (apache) from his 80 port to master's 5000 port
+ssh  docker@$worker1IP -L 5000:$worker1IP:80 
+#after that if we login to master node in a NEW TAB and lynx localhost:5000 
+#we' ll see the worker's1 service accessible inside the master node

3worker.sh

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+sudo apt update 
+sudo apt upgrade -y 
+sudo apt-get install apache2 -y
+sudo apt-get install lynx -y
+sudo service apache2 start
+

3workerRemote.sh

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+sudo apt update 
+sudo apt upgrade -y 
+# Installing a terminal browser
+sudo apt-get install lynx -y
+# Finding out the masterIP
+network=$(ifconfig | grep inet |  sed -n 1p | awk "{print \$2}" | cut -f 1-3 -d "."  | sed 's/$/.*/')    
+masterIP=$(nmap -sP $network | grep master | awk '{print $NF}' | tr -d '()')
+# Giving access to the remote host (master node)via an ssh connection 
+#(docker@172.19.0.2) to a service running in our (worker's 1) port 80 
+#and forwarding it to the remote's host (master node) port 5002
+ssh -R 5002:localhost:80 docker@$masterIP
+#now if we lynx localhost:5002 inside the master node 
+#we' ll see the worker's1 service accessible inside the master node

connect.sh

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+sudo openvpn --config Athina.ovpn

create-user.sh

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+USERNAME=Athina
+vpn_data=$PWD/openvpn-services/
+docker=registry.vlabs.uniwa.gr:5080/myownvpn
+
+docker run -v $vpn_data:/etc/openvpn --rm -it $docker easyrsa build-client-full $USERNAME nopass
+docker run -v $vpn_data:/etc/openvpn --log-driver=none --rm $docker ovpn_getclient $USERNAME  > $USERNAME.ovpn