![\"elb3\"](\"\/blog\/wp-ttn-blog\/uploads\/2014\/10\/elb3.png\")
<\/a><\/p>\nInstead of having multiple S3 bucket for each ELB access logs, we’ll create only one S3 bucket for storing all ELB’s access logs.<\/p>\n
This section walks you through the step by step guide for configuring S3 bucket for storing ELB logs.<\/p>\n
Step1: Create S3 bucket <\/p>\n Let’s create an S3 bucket for storing our ELB logs. Let’s create few folder inside our S3 bucket. e.g. myapp1, myapp2, myapp3 for storing respective elb access logs.<\/p>\n <\/p>\n You can use below bucket policy for this purpose. You have to change certain parameters on this policy like “account number, bucket name , folder name” as per your setup.<\/p>\n [js] –> In Resource section above , You have to use below format <\/p>\n [js] arn:aws:s3:::yourS3bucketname\/prefix\/AWSLogs\/yourAWSAccountID\/* [\/js]<\/p>\n like we did Similarly you can define multiple prefix for multiple application.<\/p>\n <\/p>\n Log In to EC2 Section -> Browse to Load Balancers -> Click on any load Balancer -> Enable Access log [Edit], Give the path of S3 bucket. “com.domainname.com.elb.logs\/myapp1”<\/p>\n
\nStep2: Attach a bucket policy to the S3 Bucket
\nStep3: Enable Access logs at the ELB
\n<\/strong><\/p>\nStep1: Create S3 bucket: <\/h3>\n
\nS3 bucket:<\/strong> com.domainame.com.elb.logs<\/p>\n<\/p>\n Step2: Attach a bucket policy to the S3 bucket.<\/h3>\n
\n{
\n"Version": "2008-10-17",
\n"Id": "Policy1413182823222",
\n"Statement": [
\n {
\n "Sid": "Stmt1413182819426",
\n "Effect": "Allow",
\n "Principal": {
\n "AWS": "arn:aws:iam::ELB-REGION-ID:root"
\n },
\n "Action": "s3:PutObject",
\n "Resource": [
\n "arn:aws:s3:::com.domainname.com.elb.logs\/myapp1\/AWSLogs\/XXXXXXXXXXXX\/*",
\n "arn:aws:s3:::com.domainname.com.elb.logs\/myapp2\/AWSLogs\/XXXXXXXXXXXX\/*",
\n "arn:aws:s3:::com.domainname.com.elb.logs\/myapp3\/AWSLogs\/XXXXXXXXXXXX\/*",
\n ]
\n }
\n ]
\n}
\n[\/js]
\n–> In place of ELB-REGION-ID, you have to use ‘127311923021’ if your ELB is in North Virginia and ‘156460612806’ if your ELB is in EU (Ireland). For a complete list of ELB REGION ID you can follow this link “http:\/\/docs.aws.amazon.com\/ElasticLoadBalancing\/latest\/DeveloperGuide\/configure-s3-bucket.html<\/a>”<\/p>\n
\nyourS3bucketname:<\/strong> “com.domainname.com.elb.logs”
\nprefix:<\/strong> “myapp1”
\nAWSlogs:<\/strong> “leave it as it is”
\nyourAWSAccountID:<\/strong> “your 12 digit AWS Account Number”<\/p>\nStep3: Enable Access logs at the ELB <\/h3>\n
\nThis will ask you for your S3 Bucket location with prefix. <\/p>\n