I'm trying to communicate a service from other Pod, but i'm unable to access on it.
Im using GKE, I tried different ports and setups and looking into the code: https://github.com/spreaker/prometheus-pgbouncer-exporter
My deployment file, has:
spec:
containers:
- name: exporter
image: ...
ports:
- containerPort: 9127
env:
...
And the service:
type: NodePort
ports:
- port: 9127
protocol: "TCP"
name: exporter
When I try to describe the svc:
Name: ...-pg-bouncer-exporter-service
Namespace: backend
Labels: app=...-pg-bouncer-exporter
Annotations: <none>
Selector: app=...-pg-bouncer-exporter
Type: NodePort
IP: 10.0.19.80
Port: exporter 9127/TCP
TargetPort: 9127/TCP
NodePort: exporter 31296/TCP
Endpoints: 10.36.7.40:9127
Session Affinity: None
External Traffic Policy: Cluster
Events: <none>
And the Pod itself:
Containers:
exporter:
Container ID: docker://...
Image: ...
Image ID: docker-pullable:...
Port: 9127/TCP
Host Port: 0/TCP
State: Running
Started: Wed, 10 Jul 2019 11:17:38 +0200
Ready: True
Restart Count: 0
If I access to the container, I'm receiving correctly data from curl:
/ # curl localhost:9127/metrics
# HELP process_virtual_memory_bytes Virtual memory size in bytes.
# TYPE process_virtual_memory_bytes gauge
process_virtual_memory_bytes ....
Also doing a port-forward to the service it works:
$ kubectl port-forward services/...-pg-bouncer-exporter-service 9127:9127 -n backend
Forwarding from 127.0.0.1:9127 -> 9127
Forwarding from [::1]:9127 -> 9127
Handling connection for 9127
Now im getting this error from other pod in the same network:
curl 10.36.7.40:9127/metrics
curl: (7) Failed to connect to 10.36.7.40 port 9127: Connection refused
Also If I create a LivenessProbe TCP to the 9127, im getting this error:
Liveness probe failed: dial tcp 10.36.7.40:9127: connect: connection refused
I don't see what im doing wrong, im using the same setup for other services.
Thanks in advance!
So the problem was:
Instead to use 127.0.0.1
for the PGBOUNCER_EXPORTER_HOST i have to use 0.0.0.0
.
Thats solves the issue.