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Version: 3.1

Harbor with Portworx on Kubernetes

This reference architecture document shows how you can deploy Harbor, an open-source container image registry, and its dependencies with Portworx on Kubernetes. Under this architecture, Portworx provides reliable and persistent storage to ensure Harbor runs with HA.

Create StorageClass

All of the components will use a StorageClass with 3 replicas, so create and apply the following spec:

kubectl apply -f - <<EOF
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
name: portworx-sc-repl3
provisioner: kubernetes.io/portworx-volume
parameters:
repl: "3"
priority_io: "high"
EOF

For details about the Portworx-specific parameters, refer to the Portworx Volume section.

note

If you're using Portworx with CSI, you must set the value of the provisioner parameter to pxd.portworx.com.

Setup Harbor

Prequisites

  • By default, the instructions in this document deploy everything in the harbor namespace, but you can change this by specifying your own namespace:

    kubectl apply -f - <<EOF
    apiVersion: v1
    kind: Namespace
    metadata:
    name: harbor
    EOF
  • Harbor is deployed using Helm, so it will need to be installed and have permissions on the harbor namespace. You can find instructions here.

Deploy dependencies

Harbor requires a PostgreSQL and Redis database.

  1. Apply the following spec to deploy PostgreSQL, making sure to change the password and username to your preferred values:

    kubectl apply -f - <<EOF
    apiVersion: v1
    kind: PersistentVolumeClaim
    metadata:
    name: postgres-pvc
    namespace: harbor
    annotations:
    volume.beta.kubernetes.io/storage-class: portworx-sc-repl3
    spec:
    accessModes:
    - ReadWriteOnce
    resources:
    requests:
    storage: 2Gi
    ---
    apiVersion: v1
    kind: Service
    metadata:
    name: postgres
    namespace: harbor
    labels:
    app: postgres
    spec:
    ports:
    - port: 5432
    selector:
    app: postgres
    clusterIP: None
    ---
    apiVersion: apps/v1
    kind: Deployment
    metadata:
    name: postgres
    namespace: harbor
    labels:
    app: postgres
    spec:
    strategy:
    type: Recreate
    replicas: 1
    selector:
    matchLabels:
    app: postgres
    template:
    metadata:
    labels:
    app: postgres
    spec:
    schedulerName: stork
    containers:
    - name: postgres
    image: postgres:13.2
    readinessProbe:
    exec:
    command: ["psql", "-w", "-U", "postgres", "-c", "SELECT 1"]
    initialDelaySeconds: 15
    timeoutSeconds: 2
    livenessProbe:
    exec:
    command: ["psql", "-w", "-U", "postgres", "-c", "SELECT 1"]
    initialDelaySeconds: 45
    timeoutSeconds: 2
    ports:
    - containerPort: 5432
    name: postgres
    env:
    - name: POSTGRES_USER
    value: postgres
    - name: POSTGRES_PASSWORD
    value: password
    - name: PGDATA
    value: /var/lib/postgresql/data/pgdata
    volumeMounts:
    - name: postgres-persistent-storage
    mountPath: /var/lib/postgresql/data
    volumes:
    - name: postgres-persistent-storage
    persistentVolumeClaim:
    claimName: postgres-pvc
    EOF
  2. Apply the following spec to deploy Redis:

    kubectl apply -f - <<EOF
    apiVersion: v1
    kind: PersistentVolumeClaim
    metadata:
    name: redis-pvc
    namespace: harbor
    annotations:
    volume.beta.kubernetes.io/storage-class: portworx-sc-repl3
    spec:
    accessModes:
    - ReadWriteOnce
    resources:
    requests:
    storage: 2Gi
    ---
    apiVersion: v1
    kind: Service
    metadata:
    name: redis
    namespace: harbor
    spec:
    ports:
    - port: 6379
    name: redis
    clusterIP: None
    selector:
    app: redis
    ---
    apiVersion: apps/v1
    kind: Deployment
    metadata:
    name: redis
    namespace: harbor
    labels:
    app: redis
    spec:
    selector:
    matchLabels:
    app: redis
    template:
    metadata:
    labels:
    app: redis
    spec:
    schedulerName: stork
    containers:
    - name: redis
    image: redis:3.2-alpine
    imagePullPolicy: Always
    args: ["--requirepass", "password"]
    ports:
    - containerPort: 6379
    name: redis
    volumeMounts:
    - name: redis-vol
    mountPath: /data
    volumes:
    - name: redis-vol
    persistentVolumeClaim:
    claimName: redis-pvc
    EOF
  3. Enter the following command to create the four PostgreSQL databases Harbor requires:

    DB_POD=$(kubectl get pods -n harbor -l app=postgres | awk '/postgres/{print$1}')
    kubectl exec $DB_POD -n harbor -- createdb -Upostgres registry
    kubectl exec $DB_POD -n harbor -- createdb -Upostgres clair
    kubectl exec $DB_POD -n harbor -- createdb -Upostgres notary_server
    kubectl exec $DB_POD -n harbor -- createdb -Upostgres notary_signer

Deploy Harbor

Enter the following commands to add the Harbor repository and deploy Harbor. Replace myharbor with a name of your choosing:

NAMESPACE=harbor
helm repo add harbor https://helm.goharbor.io
helm install myharbor harbor/harbor \
--set redis.type=external \
--set redis.external.addr=redis.$NAMESPACE:6379 \
--set redis.external.password=password \
--set database.type=external \
--set database.external.host=postgres.$NAMESPACE \
--set database.external.username=postgres \
--set database.external.password=password \
--set persistence.persistentVolumeClaim.registry.storageClass=portworx-sc-repl3 \
--set persistence.persistentVolumeClaim.chartmuseum.storageClass=portworx-sc-repl3 \
--set persistence.persistentVolumeClaim.jobservice.storageClass=portworx-sc-repl3 \
--set persistence.persistentVolumeClaim.trivy.storageClass=portworx-sc-repl3 \
--namespace $NAMESPACE

If you want to expose the portal as NodePort, you may add the flags:

  --set expose.type=nodePort \
--set expose.tls.enabled=false \
--set externalURL=http://<hostname.domain>:30002 \

Clean up Harbor

To clean up the environment created above, run the following:

helm delete myharbor -n harbor
kubectl delete -n harbor \
deploy/redis \
svc/redis \
pvc/redis-pvc \
deploy/postgres \
svc/postgres \
pvc/postgres-pvc \
pvc/myharbor-harbor-chartmuseum \
pvc/myharbor-harbor-jobservice \
pvc/data-myharbor-harbor-trivy-0 \
pvc/myharbor-harbor-registry
kubectl delete sc/portworx-sc-repl3

Configuring snapshots

Scheduled snapshots can be configured. PostgreSQL does not require any special Pre or Post rules to be added; Redis is only used for cache and temporary storage, so it does not need a Pre rule to ensure it is flushed to disk. See the Create and use snapshots page for more details about snapsots.

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