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Warning

These training archives may be out of date, but have been retained and kept available for the community's benefit in reviewing previous sessions.

Current training documentation can be found here: Training

Table of Contents

Learning Outcomes

  • Understand the purpose of a repository
  • Learn what Fedora can do for you
  • Understand the key capabilities of the software

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  • Basic authorization compares the user's role(s) with an Access Control List (ACL) defined on a Fedora resource.
  • ACLs can be inherited; if a given node does not have an associated ACL, Fedora will examine parent nodes until it finds one.

XACML Authorization

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  • XACML policies can provide much more complex and granular authorization.
  • A default policy must be defined for the repository, and each node can override the default with another policy.
  • A XACML policy referenced by a node will also apply to all the node's children, unless they define their own XACML policies that override the parent policy.

Performance

Transactions

  • Multiple actions can be bundled together into a single repository event (transaction).
  • Transactions offer performance benefits by cutting down on the number of times data is written to the repository filesystem (which tends to be the slowest action).

Clustering

 

 

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  • Two or more Fedora instances can be configured to work together in a cluster.
  • Fedora 4 currently supports clustering for high-availability use cases.
    • A load balancer can be setup in front of two or more Fedora instances to evenly distribute read requests across each instance.
    • If one Fedora instance in the cluster goes down, read requests can be directed to the other instance.
    • Ingests are replicated across all instances in the cluster.