Invalid host. To browse Nexus, click here/. To use the Docker registry, point your client at when access to nexus in kubernetes - kubernetes

Question

I am using helm 3 to install nexus in kubernetes v1.18:
helm install stable/sonatype-nexus --name=nexus
and then expose nexus by using traefik 2.x to outside by using domian: nexus.dolphin.com. But when I using domain to access nexus servcie it give me this tips:
Invalid host. To browse Nexus, click here/. To use the Docker registry, point your client
and I have read this question, but It seem not suite for my situation. And this is my nexus yaml config now:
kind: Deployment
apiVersion: apps/v1
metadata:
name: nexus-sonatype-nexus
namespace: infrastructure
selfLink: /apis/apps/v1/namespaces/infrastructure/deployments/nexus-sonatype-nexus
uid: 023de15b-19eb-442d-8375-11532825919d
resourceVersion: '1710210'
generation: 3
creationTimestamp: '2020-08-16T07:17:07Z'
labels:
app: sonatype-nexus
app.kubernetes.io/managed-by: Helm
chart: sonatype-nexus-1.23.1
fullname: nexus-sonatype-nexus
heritage: Helm
release: nexus
annotations:
deployment.kubernetes.io/revision: '1'
meta.helm.sh/release-name: nexus
meta.helm.sh/release-namespace: infrastructure
managedFields:
- manager: Go-http-client
operation: Update
apiVersion: apps/v1
time: '2020-08-16T07:17:07Z'
fieldsType: FieldsV1
- manager: kube-controller-manager
operation: Update
apiVersion: apps/v1
time: '2020-08-18T16:26:34Z'
fieldsType: FieldsV1
spec:
replicas: 1
selector:
matchLabels:
app: sonatype-nexus
release: nexus
template:
metadata:
creationTimestamp: null
labels:
app: sonatype-nexus
release: nexus
spec:
volumes:
- name: nexus-sonatype-nexus-data
persistentVolumeClaim:
claimName: nexus-sonatype-nexus-data
- name: nexus-sonatype-nexus-backup
emptyDir: {}
containers:
- name: nexus
image: 'sonatype/nexus3:3.20.1'
ports:
- name: nexus-docker-g
containerPort: 5003
protocol: TCP
- name: nexus-http
containerPort: 8081
protocol: TCP
env:
- name: install4jAddVmParams
value: >-
-Xms1200M -Xmx1200M -XX:MaxDirectMemorySize=2G
-XX:+UnlockExperimentalVMOptions
-XX:+UseCGroupMemoryLimitForHeap
- name: NEXUS_SECURITY_RANDOMPASSWORD
value: 'false'
resources: {}
volumeMounts:
- name: nexus-sonatype-nexus-data
mountPath: /nexus-data
- name: nexus-sonatype-nexus-backup
mountPath: /nexus-data/backup
livenessProbe:
httpGet:
path: /
port: 8081
scheme: HTTP
initialDelaySeconds: 30
timeoutSeconds: 1
periodSeconds: 30
successThreshold: 1
failureThreshold: 6
readinessProbe:
httpGet:
path: /
port: 8081
scheme: HTTP
initialDelaySeconds: 30
timeoutSeconds: 1
periodSeconds: 30
successThreshold: 1
failureThreshold: 6
terminationMessagePath: /dev/termination-log
terminationMessagePolicy: File
imagePullPolicy: IfNotPresent
- name: nexus-proxy
image: 'quay.io/travelaudience/docker-nexus-proxy:2.5.0'
ports:
- name: nexus-proxy
containerPort: 8080
protocol: TCP
env:
- name: ALLOWED_USER_AGENTS_ON_ROOT_REGEX
value: GoogleHC
- name: CLOUD_IAM_AUTH_ENABLED
value: 'false'
- name: BIND_PORT
value: '8080'
- name: ENFORCE_HTTPS
value: 'false'
- name: NEXUS_DOCKER_HOST
- name: NEXUS_HTTP_HOST
- name: UPSTREAM_DOCKER_PORT
value: '5003'
- name: UPSTREAM_HTTP_PORT
value: '8081'
- name: UPSTREAM_HOST
value: localhost
resources: {}
terminationMessagePath: /dev/termination-log
terminationMessagePolicy: File
imagePullPolicy: IfNotPresent
restartPolicy: Always
terminationGracePeriodSeconds: 30
dnsPolicy: ClusterFirst
serviceAccountName: nexus-sonatype-nexus
serviceAccount: nexus-sonatype-nexus
securityContext:
fsGroup: 2000
schedulerName: default-scheduler
strategy:
type: RollingUpdate
rollingUpdate:
maxUnavailable: 25%
maxSurge: 25%
revisionHistoryLimit: 10
progressDeadlineSeconds: 600
status:
observedGeneration: 3
replicas: 1
updatedReplicas: 1
readyReplicas: 1
availableReplicas: 1
conditions:
- type: Progressing
status: 'True'
lastUpdateTime: '2020-08-18T16:23:54Z'
lastTransitionTime: '2020-08-18T16:23:54Z'
reason: NewReplicaSetAvailable
message: >-
ReplicaSet "nexus-sonatype-nexus-79fd4488d5" has successfully
progressed.
- type: Available
status: 'True'
lastUpdateTime: '2020-08-18T16:26:34Z'
lastTransitionTime: '2020-08-18T16:26:34Z'
reason: MinimumReplicasAvailable
message: Deployment has minimum availability.
why the domian could not access nexus by default? and what should I do to access nexus by domain?

Answer 1

From the documentation you should set a property of the helm chart: nexusProxy.env.nexusHttpHost to nexus.dolphin.com
The docker image used here has a proxy that allows you to access the Nexus HTTP and Nexus Docker services by different domains, if you don't specify either then you get the behaviour you're seeing.