Add health_check extension to bundled otel.yml file (#5369)

* Add health_check extension to bundled otel.yml file

* Adding CHANGELOG

* Add extension to pipeline

Co-authored-by: Roger Coll <roger.coll@elastic.co>

* Change path to health check endpoint

* Revert change to health check endpoint path

---------

Co-authored-by: Roger Coll <roger.coll@elastic.co>

Author: ycombinator

changelog/fragments/1724804905-otel-health-check.yaml

@@ -0,0 +1,32 @@
+# Kind can be one of:
+# - breaking-change: a change to previously-documented behavior
+# - deprecation: functionality that is being removed in a later release
+# - bug-fix: fixes a problem in a previous version
+# - enhancement: extends functionality but does not break or fix existing behavior
+# - feature: new functionality
+# - known-issue: problems that we are aware of in a given version
+# - security: impacts on the security of a product or a user’s deployment.
+# - upgrade: important information for someone upgrading from a prior version
+# - other: does not fit into any of the other categories
+kind: bug-fix
+
+# Change summary; a 80ish characters long description of the change.
+summary: Add health_check extension to otel.yml file bundled with Elastic Agent package
+
+# Long description; in case the summary is not enough to describe the change
+# this field accommodate a description without length limits.
+# NOTE: This field will be rendered only for breaking-change and known-issue kinds at the moment.
+#description:
+
+# Affected component; usually one of "elastic-agent", "fleet-server", "filebeat", "metricbeat", "auditbeat", "all", etc.
+component: elastic-agent
+
+# PR URL; optional; the PR number that added the changeset.
+# If not present is automatically filled by the tooling finding the PR where this changelog fragment has been added.
+# NOTE: the tooling supports backports, so it's able to fill the original PR number instead of the backport PR number.
+# Please provide it if you are adding a fragment for a different PR.
+pr: https://github.com/elastic/elastic-agent/pull/5369
+
+# Issue URL; optional; the GitHub issue related to this changeset (either closes or is part of).
+# If not present is automatically filled by the tooling with the issue linked to the PR number.
+#issue: https://github.com/owner/repo/1234

otel.yml

@@ -21,9 +21,12 @@ extensions:
     check_interval: 1s
     limit_mib: 700
     spike_limit_mib: 180
+  health_check:
+    endpoint: "localhost:13133"
+    path: "/health/status"
 
 service:
-  extensions: [memory_limiter]
+  extensions: [health_check, memory_limiter]
   pipelines:
     logs:
       receivers: [filelog]