Use LoadBalancer for bare metal single node kubernetes clusters - kubernetes

Question

Environment: Ubuntu 18.06 bare metal, set up the cluster with kubeadm (single node)
I want to access the cluster via port 80. Currently I am able to access it via the nodePort: domain.com:31668/ but not via port 80. I am using metallb Do I need something else to handle incoming traffic?
So the current topology would be:
LoadBalancer > Ingress Controller > Ingress > Service
kubectl -n ingress-nginx describe service/ingress-nginx:
Name: ingress-nginx
Namespace: ingress-nginx
Labels: app.kubernetes.io/name=ingress-nginx
app.kubernetes.io/part-of=ingress-nginx
Annotations: <none>
Selector: app.kubernetes.io/name=ingress-nginx,app.kubernetes.io/part-of=ingress-nginx
Type: LoadBalancer
IP: 10.99.6.137
LoadBalancer Ingress: 192.168.1.240
Port: http 80/TCP
TargetPort: 80/TCP
NodePort: http 31668/TCP
Endpoints: 192.168.0.8:80
Port: https 443/TCP
TargetPort: 443/TCP
NodePort: https 30632/TCP
Endpoints: 192.168.0.8:443
Session Affinity: None
External Traffic Policy: Cluster
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Normal IPAllocated 35m metallb-controller Assigned IP "192.168.1.240"
As I am using a bare metal environment I am using metallb.
metallb config:
apiVersion: v1
kind: ConfigMap
metadata:
namespace: metallb-system
name: config
data:
config: |
address-pools:
- name: default
protocol: layer2
addresses:
- 192.168.1.240-192.168.1.250
Ingress controller yml's:
apiVersion: v1 kind: Namespace metadata: name: ingress-nginx labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
---
kind: ConfigMap apiVersion: v1 metadata: name: nginx-configuration namespace: ingress-nginx labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
--- kind: ConfigMap apiVersion: v1 metadata: name: tcp-services namespace: ingress-nginx labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
--- kind: ConfigMap apiVersion: v1 metadata: name: udp-services namespace: ingress-nginx labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
--- apiVersion: v1 kind: ServiceAccount metadata: name: nginx-ingress-serviceaccount namespace: ingress-nginx labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
--- apiVersion: rbac.authorization.k8s.io/v1beta1 kind: ClusterRole metadata: name: nginx-ingress-clusterrole labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx rules:
- apiGroups:
- ""
resources:
- configmaps
- endpoints
- nodes
- pods
- secrets
verbs:
- list
- watch
- apiGroups:
- ""
resources:
- nodes
verbs:
- get
- apiGroups:
- ""
resources:
- services
verbs:
- get
- list
- watch
- apiGroups:
- "extensions"
resources:
- ingresses
verbs:
- get
- list
- watch
- apiGroups:
- ""
resources:
- events
verbs:
- create
- patch
- apiGroups:
- "extensions"
resources:
- ingresses/status
verbs:
- update
--- apiVersion: rbac.authorization.k8s.io/v1beta1 kind: Role metadata: name: nginx-ingress-role namespace: ingress-nginx labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx rules:
- apiGroups:
- ""
resources:
- configmaps
- pods
- secrets
- namespaces
verbs:
- get
- apiGroups:
- ""
resources:
- configmaps
resourceNames:
# Defaults to "<election-id>-<ingress-class>"
# Here: "<ingress-controller-leader>-<nginx>"
# This has to be adapted if you change either parameter
# when launching the nginx-ingress-controller.
- "ingress-controller-leader-nginx"
verbs:
- get
- update
- apiGroups:
- ""
resources:
- configmaps
verbs:
- create
- apiGroups:
- ""
resources:
- endpoints
verbs:
- get
--- apiVersion: rbac.authorization.k8s.io/v1beta1 kind: RoleBinding metadata: name: nginx-ingress-role-nisa-binding namespace: ingress-nginx labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx roleRef: apiGroup: rbac.authorization.k8s.io kind: Role name: nginx-ingress-role subjects:
- kind: ServiceAccount
name: nginx-ingress-serviceaccount
namespace: ingress-nginx
--- apiVersion: rbac.authorization.k8s.io/v1beta1 kind: ClusterRoleBinding metadata: name: nginx-ingress-clusterrole-nisa-binding labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: nginx-ingress-clusterrole subjects:
- kind: ServiceAccount
name: nginx-ingress-serviceaccount
namespace: ingress-nginx
---
apiVersion: extensions/v1beta1 kind: Deployment metadata: name: nginx-ingress-controller namespace: ingress-nginx labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx spec: replicas: 1 selector:
matchLabels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx template:
metadata:
labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
annotations:
prometheus.io/port: "10254"
prometheus.io/scrape: "true"
spec:
serviceAccountName: nginx-ingress-serviceaccount
containers:
- name: nginx-ingress-controller
image: quay.io/kubernetes-ingress-controller/nginx-ingress-controller:0.21.0
args:
- /nginx-ingress-controller
- --configmap=$(POD_NAMESPACE)/nginx-configuration
- --tcp-services-configmap=$(POD_NAMESPACE)/tcp-services
- --udp-services-configmap=$(POD_NAMESPACE)/udp-services
- --publish-service=$(POD_NAMESPACE)/ingress-nginx
- --annotations-prefix=nginx.ingress.kubernetes.io
securityContext:
capabilities:
drop:
- ALL
add:
- NET_BIND_SERVICE
# www-data -> 33
runAsUser: 33
env:
- name: POD_NAME
valueFrom:
fieldRef:
fieldPath: metadata.name
- name: POD_NAMESPACE
valueFrom:
fieldRef:
fieldPath: metadata.namespace
ports:
- name: http
containerPort: 80
- name: https
containerPort: 443
livenessProbe:
failureThreshold: 3
httpGet:
path: /healthz
port: 10254
scheme: HTTP
initialDelaySeconds: 10
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 1
readinessProbe:
failureThreshold: 3
httpGet:
path: /healthz
port: 10254
scheme: HTTP
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 1
---
output of curl -v http://192.168.1.240 (executing inside the server)
* Rebuilt URL to: http://192.168.1.240/
* Trying 192.168.1.240...
* TCP_NODELAY set
* Connected to 192.168.1.240 (192.168.1.240) port 80 (#0)
> GET / HTTP/1.1
> Host: 192.168.1.240
> User-Agent: curl/7.61.0
> Accept: */*
>
< HTTP/1.1 404 Not Found
< Server: nginx/1.15.6
< Date: Thu, 27 Dec 2018 19:03:28 GMT
< Content-Type: text/html
< Content-Length: 153
< Connection: keep-alive
<
<html>
<head><title>404 Not Found</title></head>
<body>
<center><h1>404 Not Found</h1></center>
<hr><center>nginx/1.15.6</center>
</body>
</html>
* Connection #0 to host 192.168.1.240 left intact
kubectl describe ingress articleservice-ingress
Name: articleservice-ingress
Namespace: default
Address: 192.168.1.240
Default backend: default-http-backend:80 (<none>)
Rules:
Host Path Backends
---- ---- --------
host.com
/articleservice articleservice:31001 (<none>)
Annotations:
nginx.ingress.kubernetes.io/rewrite-target: /
Events: <none>
curl -vH 'host: elpsit.com' http://192.168.1.240/articleservice/system/ipaddr
I can reach the ingress as expected from inside the server.