Cloud Watch

Question 1

What is Cloud Watch?

Answer 1

Alarms and checks to ensure that we catch warning signs before they become bigger problems

Question 2

Cloud Watch System Metrics

Answer 2

the more managed the service is [i.e. RDS], the more data you get

Question 3

Cloud Watch Application Metrics

Answer 3

you install the CloudWatch agent on the EC2 instance

Question 4

Cloud Watch Alarms

Answer 4

tell you when something goes wrong

Question 5

Restrictions on Default Cloud Watch metrics

Answer 5

• can be checked every minute

Question 6

Restrictions on Custom Cloud Watch metrics

Answer 6

• you install the agent

- can be checked every 10 seconds

Question 7

Which CloudWatch metrics are default?

Answer 7

• CPU Utilization

- Network Throughput

Question 8

Which CloudWatch metrics are custom?

Answer 8

• EC2 Memory Utilization

- EBS Storage Capacity

Question 9

Exam tip: What tool do you use for monitoring?

Answer 9

Cloud Watch

Question 10

Are there any default Cloud Watch alarms?

Answer 10

No

Question 11

At what intervals are CloudWatch alarms provided

Answer 11

• Standard metrics = 5 minutes

- Detailed metrics - 1 minute

Question 12

CloudWatch logs

Answer 12

when you start getting a lot of logs, you will become overwhelmed with logs.

CloudWatch logs is a tool that allows you to monitor, store and access log files from a variety of sources (EC2, Lambda, RDS, etc.)

Question 13

Log Event

Answer 13

a record of what happened

Question 14

Log Stream

Answer 14

a collection of log events from the same source

Question 15

Log Group

Answer 15

all of the log streams of all services/apps that log

Question 16

CloudWatch Log Filter Patterns

Answer 16

let you look for specific terms in your logs (ex: 404 errors)

Question 17

CloudWatch Logs Insights

Answer 17

use sql-like commands to look for general trends across all your services

Question 18

CloudWatch Logs Insights

Answer 18

• CloudWatch Logs + SQL

- use sql-like commands to look for general trends across all your services

Question 19

EC2 CloudWatch Setup

Answer 19

1. Install the agent
2. run the config wizard command
3. Do you want to monitor a log file? Yes, give it a path to the log
4. Then it creates a JSON document
5. Run the agent and pull in the JSON config file
6. You have to give CloudWatch Logs a role to do this.

Question 20

EC2 CloudWatch Setup

Answer 20

1. Install the agent
2. run the config wizard command
3. Do you want to monitor a log file? Yes, give it a path to the log
4. Then it creates a JSON document
5. Run the agent and pull in the JSON config file
6. You have to give CloudWatch Logs a role to do this.

Question 21

For exam questions about logs …

Answer 21

Choose CloudWatch Logs:

• unless you don’t need to process them (use S3)

- unless they’re streaming logs or real-time solution (then use Kinesis)