ExtraHop
Description
Advanced Monitoring using ExtraHop is a feature that can be enabled in ITCare at the Global service level. This gives access to advanced network dashboards on your resources.
Activity - Generic metrics
The following graphs are available in the Activity dashboard:
Bandwidth
Total traffic
HTTP 20* Status Code
HTTP requests by Pool Member
Top URI requested
Bandwidth
This graph shows the evolution of the bandwidth.
Bits In : average bandwidth from outside to the public IP.
Bits Out : average bandwidth from the public IP to outside.
TCP established max : max TCP session established.
Analysis : Zero bandwidth or peak of bandwith may indicate an issue.
Total traffic
Bytes In : total from outside to the public IP.
Bytes Out : total from the public IP to outside
HTTP 20* Status Code
This graph shows the total amount of requests with 200+ status code. Requests with 400+ or 500+ status code are not shown here.
HTTP requests by Pool Member
This graph shows the total of HTTP request received by the Pool Member.
Analysis : Indication that the load balancing is well done and if some of the pool members receive zero or too many requests.
Top URI requested
Show the Total of by URI requested to the Pool Member.
Analysis : Identify URI that are requested too many times. It helps to improve the code.
Metrics on user experience
Clients TCP Round Trip Time
This graph shows the network latency between the client and the public IP.
Definition of Round Trip Time = network latency / Processing time = server processing time / Slowest URI
Processing time by Pool Member
This graph shows the time the Pool Members will answer to a request.
Analysis : Can indicate performance issues on the server.
HTTP errors
Errors - HTTP errors by status code
This graph shows the top 400+ errors.
Top 500/404/400 errors with the following details :
Client IP
Pool Member IP
Error
URI
Security - Metrics on SSL transactions
This is a Security Dashboard. Best practice evolves quickly.
Database - Metrics on the database
Database Activity
Total of response sent from the server to the Pool Members VS the number of error.
Analysis: a change of behavior can indicate an issue. Pay attention to the scale between the errors and the responses.
Database Performance
Server processing time (like the HTTP processing time). It will show how long it will take to the database servers to answer to the Pool Members.
Analysis: Can indicate a performance issue on the database or a bad request efficiency done by the Pool Members.
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