Alpine

Overview

The Alpine node type is used for running Alpine Linux servers.

Features

The refplat ISO includes an Alpine VM image with these tools for network troubleshooting pre-installed:

• iperf -- basic traffic generation
• routem -- OSPF/BGP control plane traffic generation
• tcpdump -- packet capture
• traceroute
• ping
• telnet
• ssh
• sshd - SSH daemon, configured to start when the node boots

Using Alpine Nodes in CML

The Alpine VM image on the refplat ISO has a locked root account. An initial user account will be created when the VM boots. By default, a cisco account with password cisco is created. You can override the username and password for this initial user account by setting the USERNAME and/or PASSWORD in the Edit Config pane for the node in the Workbench.

Shell commands in the configuration field of the node are just sourced as user root when the node starts up. This approach is based on Alpine Linux. For more information, see the Alpine Linux wiki.

Configuration example:

# this is a shell script which will be sourced at boot
hostname alpine-0
# configurable user account
USERNAME=cisco
PASSWORD=cisco
# configure networking
ip address add 10.0.0.10/24 dev eth1
ip link set dev eth1 up
ip route add 10.0.0.0/8 dev eth1
ip route add default via 10.0.0.1