Install Portworx on bare metal air-gapped Kubernetes cluster


Follow the instructions on this page to deploy Portworx and its required packages on a bare metal air-gapped Kubernetes cluster using a private container registry.

Prerequisites

  • You must have a Kubernetes cluster deployed on infrastructure that meets the minimum requirements for Portworx.
  • You must attach backing storage disks to each worker node.
  • You must have dedicated metadata disks attached to the worker nodes.
  • The same KVDB device should be present on at least 3 of your nodes, and it should have the same unique device name across all the KVDB nodes.

Configure your environment

  1. Set an environment variable for the Kubernetes version that you are using:

    KBVER=$(kubectl version --short | awk -F'[v+_-]' '/Server Version: / {print $3}')
  2. Set an environment variable to the latest major version of Portworx:

    PXVER=<portworx-version>
  3. On an internet-connected host, download the air-gapped-install bootstrap script for the Kubernetes and Portworx versions that you specified:

    curl -o px-ag-install.sh -L "https://install.portworx.com/$PXVER/air-gapped?kbver=$KBVER"
  4. Pull the container images required for the specified versions:

    sh px-ag-install.sh pull
  5. Log in to docker:

    docker login <your-private-registry>
  6. Push the container images to a private registry that is accessible to your air-gapped nodes. Do not include http:// in your private registry path:

    sh px-ag-install.sh push <your-registry-path>

    For example:

    sh px-ag-install.sh push myregistry.net:5443

    Example for pushing image to a specific repo:

    sh px-ag-install.sh push myregistry.net:5443/px-images

Create a version manifest configmap for Portworx Operator

  1. Download the Portworx version manifest:

    curl -o versions "https://install.portworx.com/$PXVER/version?kbver=$KBVER"
  2. Create a configmap from the downloaded version manifest:

    kubectl -n kube-system create configmap px-versions --from-file=versions

Install NFS packages for sharedv4 feature

Perform the following to install the NFS package on your host systems so that Portworx can use the sharedv4 feature:

  1. Start the repository container as a standalone service in Docker by running the following command:

    docker run -p 8080:8080 docker.io/portworx/px-repo:1.0.0
  2. Using a browser within your air-gapped environment, navigate to your host IP address where the above docker image is running (For example, http://<ip-address>:8080), and follow the instructions for your Linux distribution provided by the container to configure your host to use the package repository service, and install the NFS packages.

    screen capture of the service URL steps

Generate a Portworx spec

  1. Navigate to PX-Central.

  2. Select Portworx Enterprise from the product catalog.

  3. On the Product Line page, choose any option depending on which license you intend to use, then click Continue.

  4. Select the Use the Portworx Operator and Built-in ETCD options. For Portworx version, select the same value from the dropdown that you have set as your Portworx version in the previous section. Click Next.

  5. Choose your network options and click Next.

  6. In the Customize tab, for the Are you running on either of these? option, select None. Provide your internal registry path and the details for how to connect to your private registry in Registry And Image Settings..

    Click the Finish button to generate your specs.

    Your registry details

Apply specs

Apply the Operator and StorageCluster specs you generated in the section above by performing the following steps:

  1. Deploy the Operator:

    kubectl apply -f 'https://install.portworx.com/<PXVER>?comp=pxoperator'
    serviceaccount/portworx-operator created
    podsecuritypolicy.policy/px-operator created
    clusterrole.rbac.authorization.k8s.io/portworx-operator created
    clusterrolebinding.rbac.authorization.k8s.io/portworx-operator created
    deployment.apps/portworx-operator created
  2. Deploy the StorageCluster:

    kubectl apply -f 'https://install.portworx.com/<PXVER>?operator=true&mc=false&kbver=&b=true&c=px-cluster-0d8dad46-f9fd-4945-b4ac-8dfd338e915b&stork=true&csi=true&mon=true&tel=false&st=k8s&promop=true'
    storagecluster.core.libopenstorage.org/px-cluster-0d8dad46-f9fd-4945-b4ac-8dfd338e915b created

Verify your Portworx installation

Once you’ve installed Portworx, you can perform the following tasks to verify that Portworx has installed correctly.

Verify if all pods are running

Enter the following kubectl get pods command to list and filter the results for Portworx pods:

kubectl get pods -n kube-system -o wide | grep -e portworx -e px
portworx-api-774c2                                      1/1     Running   0                2m55s   192.168.121.196   username-k8s1-node0    <none>           <none>
portworx-api-t4lf9                                      1/1     Running   0                2m55s   192.168.121.99    username-k8s1-node1    <none>           <none>
portworx-api-dvw64                                      1/1     Running   0                2m55s   192.168.121.99    username-k8s1-node2    <none>           <none>
portworx-kvdb-94bpk                                     1/1     Running   0                4s      192.168.121.196   username-k8s1-node0    <none>           <none>
portworx-kvdb-8b67l                                     1/1     Running   0                10s     192.168.121.196   username-k8s1-node1    <none>           <none>
portworx-kvdb-fj72p                                     1/1     Running   0                30s     192.168.121.196   username-k8s1-node2    <none>           <none>
portworx-operator-58967ddd6d-kmz6c                      1/1     Running   0                4m1s    10.244.1.99       username-k8s1-node0    <none>           <none>
prometheus-px-prometheus-0                              2/2     Running   0                2m41s   10.244.1.105      username-k8s1-node0    <none>           <none>
px-cluster-1c3edc42-4541-48fc-b173-3e9bf3cd834d-9gs79   2/2     Running   0                2m55s   192.168.121.196   username-k8s1-node0    <none>           <none>
px-cluster-1c3edc42-4541-48fc-b173-3e9bf3cd834d-vpptx   2/2     Running   0                2m55s   192.168.121.99    username-k8s1-node1    <none>           <none>
px-cluster-1c3edc42-4541-48fc-b173-3e9bf3cd834d-bxmpn   2/2     Running   0                2m55s   192.168.121.191   username-k8s1-node2    <none>           <none>
px-csi-ext-868fcb9fc6-54bmc                             4/4     Running   0                3m5s    10.244.1.103      username-k8s1-node0    <none>           <none>
px-csi-ext-868fcb9fc6-8tk79                             4/4     Running   0                3m5s    10.244.1.102      username-k8s1-node2    <none>           <none>
px-csi-ext-868fcb9fc6-vbqzk                             4/4     Running   0                3m5s    10.244.3.107      username-k8s1-node1    <none>           <none>
px-prometheus-operator-59b98b5897-9nwfv                 1/1     Running   0                3m3s    10.244.1.104      username-k8s1-node0    <none>           <none>

Note the name of one of your px-cluster pods. You’ll run pxctl commands from these pods in following steps.

Verify Portworx cluster status

You can find the status of the Portworx cluster by running pxctl status commands from a pod. Enter the following kubectl exec command, specifying the pod name you retrieved in the previous section:

kubectl exec px-cluster-1c3edc42-4541-48fc-b173-3e9bf3cd834d-vpptx -n kube-system -- /opt/pwx/bin/pxctl status
Defaulted container "portworx" out of: portworx, csi-node-driver-registrar
Status: PX is operational
Telemetry: Disabled or Unhealthy
Metering: Disabled or Unhealthy
License: Trial (expires in 31 days)
Node ID: 788bf810-57c4-4df1-9a5a-70c31d0f478e
        IP: 192.168.121.99 
        Local Storage Pool: 1 pool
        POOL    IO_PRIORITY     RAID_LEVEL      USABLE  USED    STATUS  ZONE    REGION
        0       HIGH            raid0           3.0 TiB 10 GiB  Online  default default
        Local Storage Devices: 3 devices
        Device  Path            Media Type              Size            Last-Scan
        0:1     /dev/vdb        STORAGE_MEDIUM_MAGNETIC 1.0 TiB         14 Jul 22 22:03 UTC
        0:2     /dev/vdc        STORAGE_MEDIUM_MAGNETIC 1.0 TiB         14 Jul 22 22:03 UTC
        0:3     /dev/vdd        STORAGE_MEDIUM_MAGNETIC 1.0 TiB         14 Jul 22 22:03 UTC
        * Internal kvdb on this node is sharing this storage device /dev/vdc  to store its data.
        total           -       3.0 TiB
        Cache Devices:
         * No cache devices
Cluster Summary
        Cluster ID: px-cluster-1c3edc42-4541-48fc-b173-3e9bf3cd834d
        Cluster UUID: 33a82fe9-d93b-435b-943e-6f3fd5522eae
        Scheduler: kubernetes
        Nodes: 3 node(s) with storage (3 online)
        IP              ID                                      SchedulerNodeName       Auth            StorageNode     Used    Capacity        Status  StorageStatus       Version         Kernel                  OS
        192.168.121.196 f6d87392-81f4-459a-b3d4-fad8c65b8edc    username-k8s1-node0      Disabled        Yes             10 GiB  3.0 TiB         Online  Up 2.11.0-81faacc   3.10.0-1127.el7.x86_64  CentOS Linux 7 (Core)
        192.168.121.99  788bf810-57c4-4df1-9a5a-70c31d0f478e    username-k8s1-node1      Disabled        Yes             10 GiB  3.0 TiB         Online  Up (This node)      2.11.0-81faacc  3.10.0-1127.el7.x86_64  CentOS Linux 7 (Core)
        192.168.121.191 a8c76018-43d7-4a58-3d7b-19d45b4c541a    username-k8s1-node2      Disabled        Yes             10 GiB  3.0 TiB         Online  Up  2.11.0-81faacc  3.10.0-1127.el7.x86_64  CentOS Linux 7 (Core)
Global Storage Pool        
        Total Used      :  30 GiB
        Total Capacity  :  9.0 TiB

The Portworx status will display PX is operational if your cluster is running as intended.

Verify pxctl cluster provision status

  • Find the storage cluster, the status should show as Online:

    kubectl -n kube-system get storagecluster
    NAME                                              CLUSTER UUID                           STATUS   VERSION   AGE
    px-cluster-1c3edc42-4541-48fc-b173-3e9bf3cd834d   33a82fe9-d93b-435b-943e-6f3fd5522eae   Online   2.11.0    10m
  • Find the storage nodes, the statuses should show as Online:

    kubectl -n kube-system get storagenodes
    NAME                  ID                                     STATUS   VERSION          AGE
    username-k8s1-node0   f6d87392-81f4-459a-b3d4-fad8c65b8edc   Online   2.11.0-81faacc   11m
    username-k8s1-node1   788bf810-57c4-4df1-9a5a-70c31d0f478e   Online   2.11.0-81faacc   11m
    username-k8s1-node2   a8c76018-43d7-4a58-3d7b-19d45b4c541a   Online   2.11.0-81faacc   11m
  • Verify the Portworx cluster provision status. Enter the following kubectl exec command, specifying the pod name you retrieved in the previous section:

    kubectl exec px-cluster-1c3edc42-4541-48fc-b173-3e9bf3cd834d-vpptx -n kube-system -- /opt/pwx/bin/pxctl cluster provision-status
    Defaulted container "portworx" out of: portworx, csi-node-driver-registrar
    NODE                                    NODE STATUS     POOL                                            POOL STATUS     IO_PRIORITY     SIZE    AVAILABLE  USED     PROVISIONED     ZONE    REGION  RACK
    788bf810-57c4-4df1-9a5a-70c31d0f478e    Up              0 ( 96e7ff01-fcff-4715-b61b-4d74ecc7e159 )      Online          HIGH            3.0 TiB 3.0 TiB    10 GiB   0 B             default default default
    f6d87392-81f4-459a-b3d4-fad8c65b8edc    Up              0 ( e06386e7-b769-4ce0-b674-97e4359e57c0 )      Online          HIGH            3.0 TiB 3.0 TiB    10 GiB   0 B             default default default
    a8c76018-43d7-4a58-3d7b-19d45b4c541a    Up              0 ( a2e0af91-bb02-1574-611b-8904cab0e019 )      Online          HIGH            3.0 TiB 3.0 TiB    10 GiB   0 B             default default default

Create your first PVC

For your apps to use persistent volumes powered by Portworx, you must use a StorageClass that references Portworx as the provisioner. Portworx includes a number of default StorageClasses, which you can reference with PersistentVolumeClaims (PVCs) you create. For a more general overview of how storage works within Kubernetes, refer to the Persistent Volumes section of the Kubernetes documentation.

Perform the following steps to create a PVC:

  1. Create a PVC referencing the px-csi-db default StorageClass and save the file:

    kind: PersistentVolumeClaim
    apiVersion: v1
    metadata:
        name: px-check-pvc
    spec:
        storageClassName: px-csi-db
        accessModes:
            - ReadWriteOnce
        resources:
            requests:
                storage: 2Gi
  2. Run the kubectl apply command to create a PVC:

    kubectl apply -f <your-pvc-name>.yaml
    persistentvolumeclaim/example-pvc created

Verify your StorageClass and PVC

  1. Enter the kubectl get storageclass command:

    kubectl get storageclass
    NAME                                 PROVISIONER                     RECLAIMPOLICY   VOLUMEBINDINGMODE   ALLOWVOLUMEEXPANSION   AGE
    px-csi-db                            pxd.portworx.com                Delete          Immediate           true                   43d
    px-csi-db-cloud-snapshot             pxd.portworx.com                Delete          Immediate           true                   43d
    px-csi-db-cloud-snapshot-encrypted   pxd.portworx.com                Delete          Immediate           true                   43d
    px-csi-db-encrypted                  pxd.portworx.com                Delete          Immediate           true                   43d
    px-csi-db-local-snapshot             pxd.portworx.com                Delete          Immediate           true                   43d
    px-csi-db-local-snapshot-encrypted   pxd.portworx.com                Delete          Immediate           true                   43d
    px-csi-replicated                    pxd.portworx.com                Delete          Immediate           true                   43d
    px-csi-replicated-encrypted          pxd.portworx.com                Delete          Immediate           true                   43d
    px-db                                kubernetes.io/portworx-volume   Delete          Immediate           true                   43d
    px-db-cloud-snapshot                 kubernetes.io/portworx-volume   Delete          Immediate           true                   43d
    px-db-cloud-snapshot-encrypted       kubernetes.io/portworx-volume   Delete          Immediate           true                   43d
    px-db-encrypted                      kubernetes.io/portworx-volume   Delete          Immediate           true                   43d
    px-db-local-snapshot                 kubernetes.io/portworx-volume   Delete          Immediate           true                   43d
    px-db-local-snapshot-encrypted       kubernetes.io/portworx-volume   Delete          Immediate           true                   43d
    px-replicated                        kubernetes.io/portworx-volume   Delete          Immediate           true                   43d
    px-replicated-encrypted              kubernetes.io/portworx-volume   Delete          Immediate           true                   43d
    stork-snapshot-sc                    stork-snapshot                  Delete          Immediate           true                   43d

    Kubectl will return details about the storageClasses available to you. Verify px-csi-db appears in the list.

  2. Enter the kubectl get pvc command, if this is the only StroageClass and PVC you’ve created, you should see only one entry in the output:

    kubectl get pvc <your-pvc-name>
    NAME          STATUS   VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS           AGE
    example-pvc   Bound    pvc-dce346e8-ff02-4dfb-935c-2377767c8ce0   2Gi        RWO            example-storageclass   3m7s

    Kubectl will return details about your PVC if it was created correctly. Verify the configuration details appear as you intended.


Last edited: Friday, Sep 23, 2022