Differences

This shows you the differences between two versions of the page.

--- linux_wiki:lambda_python_function [2019/07/31 21:57]
billdozor [File Conversion Example: Packaging]
+++ linux_wiki:lambda_python_function [2019/08/09 22:20]
billdozor [File Conversion Example: Pre-Reqs]
@@ Line 18: / Line 18: @@
 See below for Lambda examples.
   * File Conversion Example - convert images from one format to another when created in a S3 bucket.
+  * Stop/Start EC2 Instances Example - stop/start ec2 instances with a certain tag key:value on a schedule.
@@ Line 39: / Line 40: @@
             "Action": [
                 "s3:PutObject",
-                "s3:GetObject"
+                "s3:GetObject",
+                "s3:ListBucket"
             ],
             "Resource": "arn:aws:s3:::my-test-bucket/*"
@@ Line 45: / Line 47: @@
         {
             "Sid": "VisualEditor1",
+            "Effect": "Allow",
+            "Action": "s3:HeadBucket",
+            "Resource": "*"
+        }
+    ]
+}</code>
+----
+===== Stop/Start EC2 Example: Pre-Reqs =====
+Create an IAM role
+  * Services > Security > IAM > Roles > Create Role
+    * Choose a service that will use the role: Lambda
+    * Click 'Next:Permissions'
+    * **Required**: Attach the AWS managed policy "AWSLambdaBasicExecutionRole" to your new role in order to log your Lambda function to cloudwatch logs.
+    * Also, Create a new policy to allow basic EC2 list,stop,start. Example:<code json>{
+    "Version": "2012-10-17",
+    "Statement": [
+        {
+            "Sid": "VisualEditor0",
             "Effect": "Allow",
             "Action": [
-                "s3:ListAllMyBuckets",
+                "ec2:DescribeInstances",
-                "s3:ListBucket",
+                "ec2:StartInstances",
-                "s3:HeadBucket"
+                "ec2:StopInstances"
             ],
             "Resource": "*"
@@ Line 57: / Line 80: @@
 ----
 ====== Lambda: Create Function ======
@@ Line 120: / Line 144: @@
     * **Notes**
       * The above is the default code that is created for you in a from scratch lambda function in the console.
-      * For the File conversion example and others, see: https://gitlab.com/whowe/aws
+      * For the File conversion example and others, see: https://gitlab.com/whowe/aws/tree/master/lambda/
-  * Package up the directory into a zip<code bash>zip -r convertImage.zip convertImage</code>
+  * Package up the directory into a zip<code bash>cd convertImage
+zip -r convertImage.zip .</code>
+    * **Important**: The archive that is created should NOT contain a parent directory, as this parent directory already exists in AWS Lambda for your function. The "lambda_function.py" needs to be at the root of your structure.
   * Upload to AWS Lambda