deploying moodle with red hat enterprise virtualization brian mcspadden director of network...
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Deploying Moodle with Red Hat Enterprise Virtualization
Brian McSpaddenDirector of Network OperationsRemote-Learner.net
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Traditional Web Hosting – it works, but...
Consists of single servers: Some shared, some dedicated
Limited flexibility
Data “stuck” on a single server – limits scalability, upgradability and disaster recovery
More difficult to manage and maintain consistency
Difficult to fully utilize hardware
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What is Cloud Hosting?
It depends on who you ask
Most would define it as computing on the “grid”
Pooled resources – but not necessarily shared
Underlying infrastructure is abstracted from the application layer
Typically more green
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RL is not simply cloud hosting
Generic cloud hosting doesn't fit
Host in an optimized environment
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Hosting in an optimized cloud
Entire stack designed for eLearning
Unique hardware for unique needs
Flexibility while maintaining consistency
Grows with you
Keeps up with the pace of eLearning innovation
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What makes an optimized cloud different
System resources are based upon eLearning's needs
CPUDisk I/OMemory
Application Stack (LAMP, Java)Provider keeps up with Moodle's changing needs
Designed to handle peak loads – such as finals week
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Remote Learner Cloud design principles
Separate the user data from the OS image
Design to handle failuresRuns at 60% of capacity – handles minimum of two server failures – not oversold
Designed to scale
Consistent and well managed
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Visualized
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Major advantages over traditional hosting
Built to scale – handles peak usage times
Server hardware maintenance is a thing from the past
Data stored on HA storage apart from server
Disaster recovery simplified – easier to rebuild than fix
Hardware can be fully utilized
High levels of reliability for hosting big and small
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Advantages of the RHEV Platform
KVM Virtualization – Linux kernel as hypervisor
Virtualization gets everything the kernel getsKSM (Kernel SamePage Merging)Live MigrationDrivers/Modules (Hardware and Virtio)
Extremely low overhead – outperforms bare metal in some cases with lower cost over VMWare
Simplified/Unified Management Tools
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Best in class applications: Meet best in class infrastructure
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