Merge 1f240543c8 into 6c0ea5704e

README.md

@@ -41,6 +41,8 @@ var greenlock = Greenlock.create({
 
 ```
 
+If using credentials from Environment variables, the shared credentials file, the ECS credentials provider (if applicable), or loaded from AWS IAM using the credentials provider of the Amazon EC2 instance (if configured in the instance metadata), omit the `accessKeyId` and `secretAccessKey`.
+
 ## Testing
 
 The strategy is tested against the [greenlock-store-test](https://git.coolaj86.com/coolaj86/greenlock-store-test.js)

lib/aws.js

@@ -1,12 +1,14 @@
 const AWS = require("aws-sdk");
 AWS.config.setPromisesDependency(Promise);
 
-module.exports = (options) => {
+module.exports = options => {
+  AWS.config.update({ region: options.bucketRegion });
+  if (options.accessKeyId != null && options.secretAccessKey != null) {
     AWS.config.update({
-        region: options.bucketRegion
-        , credentials: new AWS.Credentials({
-            accessKeyId: options.accessKeyId
-            , secretAccessKey: options.secretAccessKey
-        })
+      credentials: new AWS.Credentials({
+        accessKeyId: options.accessKeyId,
+        secretAccessKey: options.secretAccessKey
+      })
     });
-}
+  }
+};

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "greenlock-storage-s3",
-  "version": "1.0.0",
+  "version": "1.1.4",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "greenlock-storage-s3",
-  "version": "1.1.3",
+  "version": "1.1.4",
   "description": "S3 backed storage strategy for greenlock-express.js (and greenlock.js)",
   "main": "index.js",
   "scripts": {