<p>Attached is my NEG which is unhealthy</p>
<p><a href="https://i.stack.imgur.com/vehLE.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/vehLE.png" alt="enter image description here" /></a></p>
<p>Though I have set the firewall that allows health check
<a href="https://i.stack.imgur.com/F8WUT.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/F8WUT.png" alt="enter image description here" /></a></p>
<p>The IP is connected to GKE instance which are all healthy now</p>
<p><a href="https://i.stack.imgur.com/c1G9F.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/c1G9F.png" alt="enter image description here" /></a></p>
<p>And I got this page when I access GKE's API from webpage<br />
(here <a href="http://34.160.164.35/health" rel="nofollow noreferrer">http://34.160.164.35/health</a>)
<a href="https://i.stack.imgur.com/Rarwo.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Rarwo.png" alt="enter image description here" /></a></p>
<p>What could I do to address it?</p>
<p>My mci.yaml</p>
<pre><code>apiVersion: networking.gke.io/v1
kind: MultiClusterIngress
metadata:
  name: terraback-ingress
  namespace: terraback
  labels:
    version: v1
spec:
  template:
    spec:
      backend:
        serviceName: terraback-mcs
        servicePort: 8080
</code></pre>
<p>My mcs.yaml</p>
<pre><code># Copyright 2021 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an &quot;AS IS&quot; BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# The hello service provides a load-balancing proxy over the hello-app
# pods. By specifying the type as a 'LoadBalancer', Kubernetes Engine will
# create an external HTTP load balancer.
apiVersion: networking.gke.io/v1
kind: MultiClusterService
metadata:
  name: terraback-mcs
  namespace: terraback
  labels:
    version: v1
spec:
  template:
    spec:
      selector:
        app: terraback
      ports:
        - name: web
          protocol: TCP
          port: 8080
          targetPort: 4000
---
</code></pre>

william007
<p>I got it solved..it's due to we need to return a 200 at &quot;/&quot; path...</p>
