Elastic Load Balancing affords get admission to logs that
seize exact information about requests despatched on your load balancer. Each
log incorporates statistics which include the time the request became acquired,
the purchaser's IP deal with, latencies, request paths, and server responses.
You can use those get right of entry to logs to analyze visitors styles and
troubleshoot issues
Access logs is an elective characteristic of Elastic Load Balancing that is disabled via default. After you permit access logs on your load balancer, Elastic Load Balancing captures the logs and stores them within the Amazon S3 bucket that you specify as compressed documents. You can disable get admission to logs at any time.
You are charged storage costs for Amazon S3, however now not charged for the bandwidth utilized by Elastic Load Balancing to ship log documents to Amazon S3. For more facts about storage fees, see Amazon S3 pricing.
Access log documents
Elastic Load Balancing publishes a log document for each load balancer node every five mins. Log transport is finally regular. The load balancer can deliver multiple logs for the equal length. This commonly happens if the website online has high traffic.
The report names of the access logs use the subsequent format:
The name of the S3 bucket.
(Optional) The prefix (logical hierarchy) for the bucket. The prefix which you specify ought to now not consist of the string AWSLogs. For more facts, see Organizing items the usage of prefixes.
We add the portion of the record call beginning with AWSLogs after the bucket call and non-compulsory prefix which you specify.
The date that the log changed into delivered.
The useful resource ID of the load balancer. If the resource ID includes any forward slashes (/), they are replaced with intervals.
The date and time that the logging c program languageperiod ended. For example, an stop time of 20140215T2340Z contains entries for requests made between 23:35 and 23:40 in UTC or Zulu time.
The IP cope with of the load balancer node that dealt with the request. For an internal load balancer, this is a personal IP address.
The following is an instance log report call without a prefix:
You can shop your log files to your bucket for as long as you need, however you can additionally outline Amazon S3 lifecycle guidelines to archive or delete log documents robotically. For greater facts, see Object lifecycle control within the Amazon Simple Storage Service User Guide.
Access log entries
Elastic Load Balancing logs requests sent to the weight balancer, together with requests that in no way made it to the goals. For example, if a patron sends a malformed request, or there aren't any healthful targets to respond to the request, the request remains logged. Elastic Load Balancing does no longer log fitness take a look at requests.
Each log entry contains the info of a single request (or connection within the case of WebSockets) made to the burden balancer. For WebSockets, an access is written best after the relationship is closed. If the upgraded connection can't be established, the access is the same as for an HTTP or HTTPS request.
Elastic Load Balancing logs requests on a first-rate-attempt foundation. We endorse that you use get entry to logs to apprehend the nature of the requests, now not as a entire accounting of all requests.
Syntax
The following desk describes the fields of an get admission to log entry, so as. All fields are delimited by means of areas. When new fields are brought, they are added to the quit of the log access. You need to forget about any fields on the cease of the log entry which you had been not awaiting
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