An ioFog Edge Compute Network ('ECN') is composed of a set of ioFog Controllers, Connectors, and Agents. A typical ECN will have each instance of the various components deployed on a different remote host.
ECN's are deployed using
iofogctl. The following steps will ensure that your remote hosts are ready to have
iofogctl deploy ECN components onto them remotely.
iofogctl will SSH into your remote hosts using an RSA SSH key-pair you specify. Add the public key of the key-pair that you intend to use with
iofogctl to the remote host you intend to deploy ECN components onto.
For example, you could run a command like this from the host you intend to use
ssh-copy-id -i ~/.ssh/id_rsa.pub <username>@<hostname>
iofogctl will need to run certain commands as sudo. In order to do this without using the root user, you must add the user you intend to use on the remote host to the sudo group. Run this command on the remote host:
usermod -aG sudo $USER
In order to prevent interruptions during
iofogctl SSH sessions, we need to ensure that the sudoers in the remote host can run commands without having to enter a password.
We can achieve this by editing the sudoers file by first running
su visudo on the remote host. This will open up the sudoers file for editing. Make sure this line is present in the file
%sudo ALL=(ALL) NOPASSWD:ALL.