By default, Cumulus Linux has two user accounts: cumulus and root.
The cumulus account:
- Default password is CumulusLinux!
- Is a user account in the sudo group with sudo privileges
- User can log in to the system via all the usual channels like console and SSH
The root account:
- Default password is disabled by default
- Has the standard Linux root user access to everything on the switch
- Disabled password prohibits login to the switch by SSH, telnet, FTP, and so forth
For best security, you should change the default password (using the
passwd command) before you configure Cumulus Linux on the switch.
You can enable a valid password for the root account using the
sudo passwd root command and can install an SSH key for the root account if
needed. Enabling a password for the root account allows the root user to
log in directly to the switch. The Cumulus Linux default root account
behavior is consistent with Debian.
You can add more user accounts as needed. Like the cumulus account,
these accounts must use
execute privileged commands,
so be sure to include them in the sudo group.
To access the switch without any password requires booting into a single shell/user mode. Here are the instructions on how to do this using PowerPC and x86 switches.