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Create the VM(s)

Create the VM(s) where you are going to install the SDN-C cluster on Kubernetes with the following specifications:

VCPUs4
Disk20 GB
RAM16 GB


Enable Password Logging

Do the following steps to enable password logging for a unbuntu user within the VM:

#PurposeExample
1Create a password for the ubuntu user

ubuntu@sdnc-k8s:~$ sudo passwd ubuntu

sudo: unable to resolve host sdnc-k8s

Enter new UNIX password:  <enter password>

Retype new UNIX password: <repeat entering the same password>

passwd: password updated successfully

2(Optional) Fix the "unable to resolve host" issue

ubuntu@sdnc-k8s:~$ sudo vi /etc/hosts

sudo: unable to resolve host sdnc-k8s

add the host name to the localhost in the following format:

<IP address> <hostname> localhost

3Config ssh "PasswordAuthentication" to yes

ubuntu@sdnc-k8s:~$ sudo vi /etc/ssh/sshd_config

find PasswordAuthentication and set its value to yes, so that the line looks like

# Change to no to disable tunnelled clear text passwords
PasswordAuthentication yes

4Restart sshd to enable the new config

ubuntu@sdnc-k8s:~$ systemctl restart sshd passwd

==== AUTHENTICATING FOR org.freedesktop.systemd1.manage-units ===

Authentication is required to restart 'ssh.service'.

Authenticating as: Ubuntu (ubuntu)

Password:

==== AUTHENTICATION COMPLETE ===

==== AUTHENTICATING FOR org.freedesktop.systemd1.manage-units ===

Authentication is required to restart 'passwd.service'.

Authenticating as: Ubuntu (ubuntu)

Password:

==== AUTHENTICATION COMPLETE ===

Failed to restart passwd.service: Unit passwd.service not found.


Turn Off Firewall and Allow all Incoming HTTP Connections through iptables

As part of the investigation into ODL clustering within a Kubernetes network, we turned off firewall by using the following commands:

sudo ufw disable
sudo iptables -I INPUT -j ACCEPT

These commands disable the firewall and allow all incoming HTTP connections. It is not recommended to do this in the real production environment!

We are using them as an easy alternative as we are still in progress of investigating the development environment within the Kubernetes network.

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