= Monitor Performance
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== Summary

This section will monitor the performance of *Amazon FSx for Lustre*.


== Duration

NOTE: It will take approximately 5 minutes to complete this section.


== Step-by-step Guide

=== CloudWatch dashboard

IMPORTANT: Read through all steps below and watch the quick video.

image::create-high-throughput-alarm.gif[align="left", width=600]

. Open the link:https://console.aws.amazon.com/cloudwatch/[Amazon CloudWatch] console.
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TIP: *_Context-click (right-click)_* the link above and open the link in a new tab or window to make it easy to navigate between this github tutorial and AWS console.
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. Make sure you are in the same *AWS Region* where you *_created_* your tutorial environment.
. *_Select_* *Dashboards* from the left navigation pane.
. *_Select_* the link of the dashboard created as a part of the tutorial environment.
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TIP: The name of the dashboard should be the region name (e.g. us-east-1), dash (-), file system id of *Amazon FSx for Lustre* (e.g. us-east-1-fs-0123456789abcdef).
. *_Scroll_* through the dashboard and review all the widgets and their settings.
. Notice how the vertical time line is in sync across all widgets. This makes it easy to correlate different metric values for a given point in time.
. *_Zoom_* in on a widget by *_clicking_* and *_dragging_* over a period of time. Notice all widgets also zoom in for the period of time selected.
. *_Reset_* zoom by *_clicking_* the blue magnifying glass in the top right of any widget.


=== CloudWatch alarm

IMPORTANT: Read through all steps below and watch the quick video before *_creating_* the alarm.

image::create-high-throughput-alarm.gif[align="left", width=600]

. *_Copy_* the file system id from the top right dashboard widget.
. *_Click_* the *Maximize* button of the *Throughput (Bytes per second)* widget.
. *_Click_* the *View in metrics* link (at the bottom left of the window).
. *_Find_* the metric labeled *Total Data Throughput (B/s)* and *_click_* the *Create alarm* button in the actions column.
. *_Scroll_* down to the *Conditions* section and in the *Define the threshold value* field *_enter_* 1000000000. This will set an alarm condition that will trigger if the *Total Data Throughput (B/s)* is greater than 1000 MB/s.
. *_Click_* *Next*.
. *_Scroll_* down to the *Notification* section and select the existing *SNS Topic* that was created as a part of the tutorial environment.
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TIP: The name of the SNS topic should be the file system id of *Amazon FSx for Lustre* (e.g. fs-0123456789abcdef), -alarm-notification (e.g. fs-0123456789abcdef-alarm-notification).
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. *_Click_* *Next*.
. In the *Alarm name* text box *_enter_* "High throughput alarm - " then *_paste_* the *file system id* you copied earlier (e.g. High throughput alarm - fs-0123456789abcdef).
. *_Click_* *Next*.
. *_Preview_* the alarm graph, make sure the red alarm line is at the 100M mark.
. *_Scroll_* and *_review_* the *Conditions*, *Actions*, and *Name and description* sections.
. *_Click_* *Create alarm*.
. *_Wait_* a few minutes for the alarm state to transition from *Insufficient data* to *OK*.
. *_Return_* to the previous tutorial section *Test performance* and *_ior_* test again.
* Did your *High throughput alarm* get triggered?
* Did your email address receive an alarm notification?


== Next section

Click the button below to go to the next section.

image::06-delete-environment.png[link=../06-delete-environment/, align="left",width=420]