ElasticSearch Service

Question 1

overview -

• may be caled ES on exam
• managed version of ElasticSearch (open source project)
• the ELK stack on AWS cloud (ES+logstash+kibana)
  es: provides searcha nd indexing fucntionality
  logstash: provides log ingestion mechanism, alternative to CW logs
  kibana: provides real time dashbaords for ES data, is a visualization tool
• needs to provision servers (not a serverless offering)

use cases:

log analytics

real time app monitoring

security analytics

full text search

clickstream analytics

indexing

Answer 1

T

Question 2

elasticsearch - provides search and indexing capabilities

• you send data in the form of JSON docs to ES using the API/Logstash/Firehose
• es auto adds a searchable refernce to these docs in teh cluster’s index

Answer 2

T

Question 3

Logstash

• log ingestion emchanism, usesteh “logstash agent”
• alternative to CW logs (you decide on retention and granularity)

Answer 3

T

Question 4

Kibana

• provides real time dashboards on top of the data that sits in ES
• alternative to CW dashboards (more advanced capabilities)

Answer 4

T

Question 5

Es multi-AZ

-supports multiAZ - up to ___ AZ deployments

Answer 5

3

Question 6

ES multiAZ

• can be deployed wihtin VPC
• uses dedicated master nodes to increase cluster stability
• dedicated master nodes are distributed across 3 AZs, even ifyou select 2AZ deployment
• recommended to use 3AZs for prod
• for multi az, craete at least one replica for each index in the cluster
• without replicas, cross AZ replication doesn’t happen which largely defeats the purpose of multiaz

Answer 6

T

Question 7

logging in ES service

-ES provides 3 types of logs:

error logs

search slow logs

index slow logs

• accessible through CW logs
• can be enabled from within ES consle disbaled by default)

Answer 7

T

Question 8

ES pricing

-instance pricing(per hour)

..on demand instance

..reserved instance - discounted pricing over 1 or 3 yr terms

..ultraWarm instance- on demand or managed storage (new tier type, cost effective way to store large amounts of read only data)

Answer 8

T

Question 9

ES pricing

EBS volume pricign (magnetic, general purpose, and privisioned IOPS)

• standard data transfer charges
• automated snapshots - free with 14 day retention

manual snaps - per GB

Answer 9

T