fix ec2 scraper attribute drop without describeTags

.chloggen/update-ec2-scraper.yaml

@@ -0,0 +1,27 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: 'bug_fix'
+
+# The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver)
+component: resourcedetectionprocessor
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Update to ec2 scraper so that core attributes are not dropped if describeTags returns an error (likely due to permissions)
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [30672]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:
+
+# If your change doesn't affect end users or the exported elements of any package,
+# you should instead start your pull request title with [chore] or use the "Skip Changelog" label.
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: []

processor/resourcedetectionprocessor/internal/aws/ec2/ec2.go

@@ -88,13 +88,13 @@ func (d *Detector) Detect(ctx context.Context) (resource pcommon.Resource, schem
 		client := getHTTPClientSettings(ctx, d.logger)
 		tags, err := connectAndFetchEc2Tags(meta.Region, meta.InstanceID, d.tagKeyRegexes, client)
 		if err != nil {
-			return res, "", fmt.Errorf("failed fetching ec2 instance tags: %w", err)
-		}
-		for key, val := range tags {
-			res.Attributes().PutStr(tagPrefix+key, val)
+			d.logger.Warn("failed fetching ec2 instance tags", zap.Error(err))
+		} else {
+			for key, val := range tags {
+				res.Attributes().PutStr(tagPrefix+key, val)
+			}
 		}
 	}
-
 	return res, conventions.SchemaURL, nil
 }