Install Portworx on Google Kubernetes Engine

This document provides instructions for installing Portworx with Google Kubernetes Engine (GKE).

Prerequisites

Before installing Portworx Enterprise, make sure that you meets the following requirements:

Environment requirements:
- Image type: Only GKE clusters provisioned on Ubuntu Node Images support Portworx. You must specify the Ubuntu node image when you create clusters.
- Resource requirements:
  - A GCP GKE cluster that meets the prerequisites. Your machine-type must meet the hardware requirements defined in the prerequisites.
  - For production environments, Portworx recommends 3 Availability Zones (AZs) with one node per zone
  - Portworx recommends you set Max storage nodes per availability zone, Portworx will ensure that many storage nodes exist in the zone
  - Portworx recommends creating a zonal cluster. For instructions on creating a cluster, refer to the GCP documentation.
Permissions: Portworx requires access to the Google Cloud APIs to provision & manage disks. Make sure that the user or service account creating the GKE cluster has the following roles:
- Compute Admin
- Service Account User
- Kubernetes Engine Cluster Viewer

Provide permissions to Portworx

Portworx requires a ClusterRoleBinding for your user to deploy the specs. Create a ClusterRoleBinding using the following kubectl command:

kubectl create clusterrolebinding myname-cluster-admin-binding \
    --clusterrole=cluster-admin --user=`gcloud info --format='value(config.account)'`

Install Portworx

NOTE: Portworx gets its storage capacity from the block storage mounted in the nodes and aggregates the capacity across all the nodes. This way, it creates a global storage pool. In this example, Portworx uses Persistent Disks (PD) as that block storage, where Portworx adds PDs automatically as the Kubernetes scales-out and removes PDs as nodes exit the cluster or get replaced.

Generate the specs

To install Portworx with Kubernetes, you must first generate Kubernetes manifests that you will deploy in your cluster:

Navigate to PX-Central and log in, or create an account.
Select the Portworx Enterprise option and click Continue:
Choose an appropriate license for your requirement and click Continue:
Select your desired Portworx version, select Built-in for ETCD, and click Next.
Select Cloud, then select Google cloud/GKE. Keep the recommended defaults and click Next.

NOTE: Do not add volumes of different types (standard and ssd) when configuring storage devices during spec generation. This can cause performance issues and errors.
Keep the defaults for Network and click Next.
In the Are you running on either of these? section, select Google Kubernetes Engine (GKE), then click Finish.

The spec generator outputs two kubectl commands.
To install the Operator, run the first command provided by the spec generator. This command will look similar to the following:
```
kubectl apply -f 'https://install.portworx.com/<portworx-version>?comp=pxoperator'
```

To install your deployment spec, run the second command provided by the spec generator. This command will look similar to the following:

kubectl apply -f 'https://install.portworx.com/<portworx-version>?operator=true&mc=false&b=true&kd=type%3Dpd-standard%2Csize%3D150&s=%22type%3Dpd-standard%2Csize%3D150%22&c=px-cluster-c5d0f3c4-8344-46b0-95cd-f0a8fba93736&gke=true&stork=true&csi=true&mon=true&tel=false&st=k8s&promop=true'

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 <pod-name> -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 <pod-name> -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:

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

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

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 returns details about the StorageClasses available to you. Verify that px-csi-db appears in the list.

Enter the kubectl get pvc command. If this is the only StorageClass and PVC that 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 returns details about your PVC if it was created correctly. Verify that the configuration details appear as you intended.

Upgrade Google Kubernetes Engine node types