Bare Metal DevOps Chris Read @cread Core Principles Agile - - PowerPoint PPT Presentation

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Feb 04, 2024 621 likes •822 views

Bare Metal DevOps Chris Read @cread Core Principles Agile Infrastructure Machines as Cattle Automation Communication GOTO Chicago @cread Agile Infrastructure Use configuration management! Test Rebuild

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Bare Metal DevOps

Chris Read

@cread

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@cread GOTO Chicago

Core Principles

“Agile” Infrastructure
Machines as Cattle
Automation
Communication

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Agile Infrastructure

Use configuration management!
Test
Rebuild
Repurpose

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Machines as Cattle

iPXE
OS Image management
Bootstrapping the boot server…

https://upload.wikimedia.org/wikipedia/commons/f/f2/Greenland-musk-ox_hg.jpg

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@cread GOTO Chicago

Boot Process

PXE
iPXE
HTTP call to config service
Kernel and VLAN specified
Debian live-boot
Load squashfs as root filesystem
bash scripts from git for hostname and network interface config
chef-client

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Automation

Bringing up new hardware
Firmware Upgrades
Diagnostics

https://upload.wikimedia.org/wikipedia/commons/2/27/Kempelen_chess1.jpg

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Communication

Data Center
Networks
Security
Purchasing
Vendors

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Additional Considerations

Mechanical Sympathy
Networking
Monitoring
Forecasting

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Mechanical Sympathy

Scaling writes on spinning drives
Gratuitous threading
Maintaining high availability

https://upload.wikimedia.org/wikipedia/commons/6/65/Seagate_ST-225.jpg

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Networking

Topologies
Cabling
Protocols
Scaling

https://upload.wikimedia.org/wikipedia/commons/d/d1/IBM_hermaphroditic_connector.JPG

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Monitoring

ECC (Memory)
S.M.A.R.T. (Hard Drives)
Fans
Environment

https://upload.wikimedia.org/wikipedia/commons/3/3e/FM200_Three.jpg

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Forecasting

Purchasing lead time
Supply chain disruption
Safe experiments

https://www.flickr.com/photos/april-mo/11618701545

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Gotchas

Variable Quality Hardware
Quantum State of Old Machines
Depreciated Hardware IS NOT FREE!
Platform/Vendor Changes

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DevOps is NOT:

Only deploying to the “Cloud”/

Containers/VM’s

Limited to web sites or services
Just another name for your

{Sys,Net,DB} Admins!

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Thank You

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