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NUTANIX > Cluster Components > Flashcards

Cluster Components Flashcards

0
Q

What is NDFS

A

Nutanix Distributed File System

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1
Q

What is contained in each Node?

A

CVM, Guest VMs, Hypervisor

CPU, RAM, SCSI Controller, SSD, HDD

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2
Q

What are the five primary software components in Nutanix NDFS?

A 
Prism
Zookeeper
Cassandra
Stargate
Curator
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3
Q

What are the two access interface components in NDFS

A

Medusa

Zeus

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4
Q

What is Stargate responsible for

A

Data I/O Operations

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5
Q

What is Cassandra responsible for

A

Distributed Metadata store

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6
Q

What is PRISM responsible for

A

GUI, nCLI, API access

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7
Q

What is Zookeeper responsible for

A

Cluster configuration information

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8
Q

What is the Curator responsible for

A

Map Reduce / Data location and cleanup

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9
Q

What does Zeus provide access to

A

Zookeeper

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10
Q

What does Medusa provide access to

A

Cassandra

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11
Q

What if zookeeper wants to talk to Cassandra ?

A

Zeus

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12
Q

What two major NDFS software components can communicate directly?

A

Stargate and Curator

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13
Q

What NDFS component provides stats

A

Cassandra

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14
Q

What two components get stats directly from Cassandra

A

Prism

Stargate

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15
Q

What component provides access to NDFS data from the hypervisor

A

Stargate

16
Q

How many additional Cassandra nodes must confirm a metadata transaction before it is committed

A

2

17
Q

Which nodes does Cassandra run on

A

All nodes

18
Q

What component is in charge of data locality?

A

Curator

19
Q

What component responds to a drive failure to guarantee access to data

A

Curator

20
Q

What component decides when data should be moved to spinning disk

A

Curator

21
Q

What is the construct called that encompasses replicated data

A

Extend group

22
Q

How many nodes typically run zookeeper

A

3

23
Q

What is the max nodes zookeeper can run on in some configurations

A

5

24
Q

Which zookeeper can provide cluster configuration reads

A

Any zookeeper

25
Q

Which zookeeper can handle cluster configuration writes

A

The zookeeper leader

26
Q

What happens if the zookeeper leader fails to respond

A

A new leader is elected

27
Q

Which nodes does prism run on

A

All nodes

28
Q

Does each prism instance handle requests

A

No, the leader handles all requests

29
Q

Where does Prism get stats data

A

Zookeeper and Cassandra

NUTANIX (5 decks)

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