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© JAMF Software, LLC Andy McKay Head of Technical Services Trams Ltd

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© JAMF Software, LLC Scaling Jamf Pro for High Availability Presentation agenda: Overview Fundamentals Jamf Pro Clustering MySQL Replication & Failover Distribution Point Scaling, Replication & Failover

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© JAMF Software, LLC Overview • ~65,000 devices • ~8,000 requests/sec • 100% uptime • 24/7 worldwide access What do I know?

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© JAMF Software, LLC Overview • Zero Touch Deployment • Self Service • Worldwide users • High expectations Why does availability matter?

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© JAMF Software, LLC Fundamentals of Jamf Pro The database is important Everything else is ‘just’ a web app

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© JAMF Software, LLC Fundamentals of High Availability • Design for failure • Automate as much as possible • Automate some more • Monitor Automate, Automate, Automate!

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© JAMF Software, LLC Jamf Pro Clustering Enable clustering in the web interface. Designate a master node.

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© JAMF Software, LLC

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© JAMF Software, LLC /WEB-INF/xml/datbase.xml dbserver

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© JAMF Software, LLC …

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© JAMF Software, LLC Jamf Pro Clustering • ‘Round Robin’ DNS • Layer 3 load balancer Load Balancers • Layer 4 load balancer • Layer 7 load balancer

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© JAMF Software, LLC Jamf Pro Clustering • X-forwarded-for • ‘sticky’ sessions • JSESSIONID • SSL Termination Load Balancers

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© JAMF Software, LLC … HTTPS/443 HTTP/8080 HTTP/8080

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© JAMF Software, LLC Jamf Pro Clustering Memcached • Recommended but not yet required • Should be run separately from Tomcat • Cache cluster used by all nodes

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© JAMF Software, LLC … /WEB-INF/classes/dal/cache.properties /WEB-INF/classes/dal/memcached.properties

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© JAMF Software, LLC https://www.jamf.com/jamf-nation/articles/428

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© JAMF Software, LLC Jamf Pro Clustering Upgrades • Stop Tomcat on all nodes • Upgrade Master node • Upgrade Slave nodes • … or trash and rebuild, it’s ‘just’ the web app

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© JAMF Software, LLC Jamf Pro Clustering

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© JAMF Software, LLC MySQL Replication & Failover MySQL Clustering is not supported Master -> Slave Replication

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© JAMF Software, LLC https://github.com/github/orchestrator https://dev.mysql.com/doc/refman/5.7/en/replication.html

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© JAMF Software, LLC Max image dimensions Distribution Point Replication & Failover Jamf Admin (Mac) rsync (Mac, Linux) Robocopy (Windows)

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© JAMF Software, LLC Distribution Point Scaling File share distribution points - randomised load sharing Cloud distribution points - use CDN!

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© JAMF Software, LLC Questions?

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© JAMF Software, LL THANK YOU!