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Data Infrastructure Management

Samuel Kudrna, Jinun Kim, Ryan Baik, Alexander Kotelnikov, Mattias Dorey

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Objectives

Gaining Linux skills
Manage our servers via remote connection
Create Linux diskless systems for installation and provisioning with Warewulf

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Gaining Necessary Skills

Learned:

Basic Linux commands
Python/Shell scripting
Network File Systems (NFS)

https://linuxcourse.rutgers.edu/Winlab_Internship_2024/html/index.html

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How to troubleshoot
Node reinstallation
Start/stop services

Basic networking procedures

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Definitions

SSH: Secure shell - The connection to the linux workspace
NFS: Network File System
DHCP: Dynamic Host Configuration Protocol
IPXE: Open source network-boot firmware
TFTP: A protocol that allows users to transfer to and from a remote machine

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Warewulf Workflow

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Warewulfd Commands

wwctl container (import, shell, list)

wwctl profile (set, list)

wwctl node (add, set, status, delete, list)

wwctl overlay build

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Booting into Warewulf

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Diskless Node File Systems

hostadm@node08:~$ df –h

Filesystem Size Used Avail Use% Mounted on

rootfs 126G 773M 125G 1% /

devtmpfs 126G 0 126G 0% /dev

tmpfs 126G 1.8M 126G 1% /run

tmpfs 126G 0 126G 0% /dev/shm

tmpfs 5.0M 0 5.0M 0% /run/lock

tmpfs 126G 0 126G 0% /run/shm

/dev/sda1 440G 28K 417G 1% /scratch

192.168.5.127:/opt 49G 4.4G 43G 10% /opt

192.168.5.127:/home 49G 4.4G 43G 10% /home

NFS mounted

In memory on all linux systems

Root in memory

Local Disk

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Conclusion

Learned:

Linux
Shell scripting
Python
Networking
And deployed the warewulf4 installer

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Acknowledgements

Thank you:

Ivan Seskar, for managing the internship
Jenny Shane, for leading the groups
Ruddy Jacas, for presenting his work
Alexei Kotelnikov, for being our mentor
And the rest of the winlab team and interns, for making this such a fabulous experience