Cluster Components Flashcards
What is NDFS
Nutanix Distributed File System
What is contained in each Node?
CVM, Guest VMs, Hypervisor
CPU, RAM, SCSI Controller, SSD, HDD
What are the five primary software components in Nutanix NDFS?
Prism Zookeeper Cassandra Stargate Curator
What are the two access interface components in NDFS
Medusa
Zeus
What is Stargate responsible for
Data I/O Operations
What is Cassandra responsible for
Distributed Metadata store
What is PRISM responsible for
GUI, nCLI, API access
What is Zookeeper responsible for
Cluster configuration information
What is the Curator responsible for
Map Reduce / Data location and cleanup
What does Zeus provide access to
Zookeeper
What does Medusa provide access to
Cassandra
What if zookeeper wants to talk to Cassandra ?
Zeus
What two major NDFS software components can communicate directly?
Stargate and Curator
What NDFS component provides stats
Cassandra
What two components get stats directly from Cassandra
Prism
Stargate
What component provides access to NDFS data from the hypervisor
Stargate
How many additional Cassandra nodes must confirm a metadata transaction before it is committed
2
Which nodes does Cassandra run on
All nodes
What component is in charge of data locality?
Curator
What component responds to a drive failure to guarantee access to data
Curator
What component decides when data should be moved to spinning disk
Curator
What is the construct called that encompasses replicated data
Extend group
How many nodes typically run zookeeper
3
What is the max nodes zookeeper can run on in some configurations
5
