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MANAGING DATABASES WITH CHEFMichael Hedgpeth, NCR
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About NCR :: Pioneered Cash Register
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About NCR :: Hospitality
04/15/2023 4
NCR’s Biggest Challenge :: High Availability With A Side Of
Fries
2008: Darkness
Automation and CI not enough
Influence Deployment and Delivery
Blog at hedge-ops.com
Married to a photographer
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About me :: Michael Hedgpeth
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But what about the databases?
Answer was: Snowflakes
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The Database Question
Answer: Simple and Repeatable approach
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The Database Question
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Problem Scope
::
Installing Databases Backup & Restore
Schema Management Database Configuration
NCR Confidential 10
Problem Scope :: Installing
Databases
Problem Scope :: Backup & Restore
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Problem Scope :: Schema
Management
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Problem Scope :: Database
Configuration
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Schema Management
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Our new process will be consistentBUT we are in debt with our old processWe’ve made schema consistency a separate initiativeREDGATE is a great start to this effort
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Schema Consistency Is Separate
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Our Schema Management Strategy :: Don’t reinvent the wheel
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Our Schema Management Strategy :: Make It Chef-Friendly
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Requirements :: Persisted in the
database
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Requirements :: Knows if changes
are required
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Requirements :: Execute those
changes
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Requirements :: Accessible through
Automation
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Application: http://bit.ly/1DqxTz5Cookbook: http://bit.ly/1NBc5BPSupermarket: http://bit.ly/1Dqy3qa
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Introducing…The Database
Upgrader
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Requirements :: Persisted
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Requirements :: Persisted
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Requirements :: Persisted
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Requirements :: Changes
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Requirements :: Executes
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Requirements :: Resource
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Requirements :: Resource
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Requirements :: Resource
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Requirements :: Resource
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Requirements :: Missed
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Challenges :: Long-running updates
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Challenges :: Internal vs. External changes
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Database Configuration
Add Linked Server
Memory in SQL Server
Accept RPC call
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Strategy Matters When
Gaining Allies
::
Other Nodes Preproduction
Cattle, Not Pets Culturally Automated
Strategy Matters :: Other Nodes
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Strategy Matters :: Preproduction
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Strategy Matters :: Cattle, Not Pets
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Strategy Matters :: Culturally Automated
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NCR Confidential04/15/2023 42
Epiphany
What else?
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