Magellan

Magellan is a board management controller discovery tool designed to scan a network and collect information about a BMC node and load that data into an hms-smd instance.

How It Works

Magellan is designed to do three things:

1. Scan for BMC nodes in cluster available on a network
2. Query information about each BMC node
3. Store queried information into a database

Magellan first tries to probe for specified hosts using the dora API. If that fails, it then tries to use its own built-in, simpler scanner as a fallback. This is done by sending a raw TCP request to a number of potential hosts over a network, and noting which requests are successful. At this point, magellan sees no difference between a services.

Next, it tries to query information about the BMC node using bmclib functions, but requires access to a redfish interface on the node to work. Once the BMC information is received, it is then stored into hms-smd using its API.

In summary, magellan needs at minimum the following configured to work on each node:

1. Available redfish interface with its host and port
2. A running instance of hms-smd with its host and port
3. Additional dependencies for bmclib such as ipmitool

Building

Install Go, clone the repo, and then run the following in the project root:

git clone https://github.com/bikeshack/magellan
cd magellan
go mod tidy && go build

This should find and download all of the required dependencies. Although other versions of Go may work, the project has only been tested with v1.20.

Usage

There are three main commands to use with the tool: scan, list, and collect. To scan a network for BMC nodes, use the scan command. If the port is not specified, magellan will probe ports 623, 442 (redfish and IPMI) by default:

./magellan scan --subnet 192.168.0.0 --db.path data/assets.db --port 623

This will scan the 192.168.0.0 subnet returning the host and port that return a response and store the results in database with path data/assets.db. Additional flags can be set such as host to add more hosts to scan not included on the subnet, timeout to set how long to wait for a response from the BMC node, or threads to set the number of requests to make concurrently. Try using ./magellan help scan for a complete set of options.

To see the available BMC nodes found from the scan, use the list command. Make sure to point to the same database used before:

./magellan list --db.path data/assets.db

This will print a list of IP address and ports found and stored from the scan. Finally, run the collect command to store BMC info into hms-smd:

./magellan collect --db.path data/assets.db --driver ipmi --timeout 5 --user admin --pass password

This uses the info store in the database above to request information about each BMC node if possible. It uses the driver specified by the driver flag which is passed to and set in bmclib. Like with the scan, the time to wait for a response can be set with the timeout flag as well. This command also requires the user and pass/password flag to be set to use ipmitool (which must installed as well). Additionally, it may be necessary to set the host and port flags for magellan to find the hms-smd API.

Note: If the db.path flag is not set, magellan will use /tmp/magellan.db by default.

TODO

List of things left to fix, do, or ideas...

• Switch to internal scanner if dora fails
• Set default port automatically depending on the driver used to scan
• Test using different bmclib supported drivers (mainly 'redfish')
• Confirm loading different components into hms-smd
• Add ability to set subnet mask for scanning
• Add unit tests for scan, list, and collect commands
• Clean up, remove unused, and tidy code

Copyright

Copyright

© 2023 Triad National Security, LLC. All rights reserved. This program was produced under U.S. Government contract 89233218CNA000001 for Los Alamos National Laboratory (LANL), which is operated by Triad National Security, LLC for the U.S. Department of Energy/National Nuclear Security Administration. All rights in the program are reserved by Triad National Security, LLC, and the U.S. Department of Energy/National Nuclear Security Administration. The Government is granted for itself and others acting on its behalf a nonexclusive, paid-up, irrevocable worldwide license in this material to reproduce, prepare derivative works, distribute copies to the public, perform publicly and display publicly, and to permit others to do so.