Create VM
Create the VM(s) where you are going to install SDN-C cluster on Kubernetes with the following:
VCPUs | 4 |
---|---|
Disk | 20 GB |
RAM | 16 GB |
Enable password logging
Do the following steps to enable password logging for unbuntu user in VM:
# | Purpose | Example |
---|---|---|
1 | create password for 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 "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:
|
3 | config 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
|
4 | restart 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. |
Turnoff Firewall and Allow all incoming HTTP connections through iptables
As part of investigation of ODL clustering in kubernetes network, we turned off firewall by using the following commands:
sudo ufw disable
sudo iptables -I INPUT -j ACCEPT
These commands disables the firewall and allow all incoming HTTP connections. It's not recommneded to do this in the real production envrionment.
We are using them as an easy alternative as we are still in progress of investigating in the development environment under the kubernetes network.