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Version: 3.1

Install as a Nomad Job

note

This document presents the Nomad method of installing a Portworx cluster with CSI enabled. Please refer to the Portworx on Kubernetes page if you want to install Portworx on Kubernetes.

This section shows how to install Portworx using a Nomad job.

Prerequisites

  • Nomad 1.1.0 and Portworx 2.8.0 are the minimum versions needed for most CSI volume operations.

Configure your Nomad clients

The Portworx OCI-monitor container needs to run in privileged mode, so you need to configure your Nomad clients to allow docker containers running on privileged mode.

Add the following lines in your Nomad client configuration files and restart your clients:

plugin "docker" {
config {
allow_privileged = true
volumes {
enabled = true
}
}
}

Install Portworx

Create a Nomad job file

  1. Create a new file called portworx.nomad with the following content, specifying your own information for the following fields:

    • the datacenters on the file above to fit your environment

    • the count to specify the number of nomad nodes you want Portworx to be installed on

    • Optionally, any constraints you may have

      :::note This example installs Portworx on a Nomad cluster with 3 clients. :::

      job "portworx" {
      type = "service"
      datacenters = ["dc1"]

      group "portworx" {
      count = 3

      constraint {
      operator = "distinct_hosts"
      value = "true"
      }

      # restart policy for failed portworx tasks
      restart {
      attempts = 3
      delay = "30s"
      interval = "5m"
      mode = "fail"
      }

      # how to handle upgrades of portworx instances
      update {
      max_parallel = 1
      health_check = "checks"
      min_healthy_time = "10s"
      healthy_deadline = "10m"
      progress_deadline = "20m"
      auto_revert = true
      canary = 0
      stagger = "30s"
      }

      network {
      port "portworx" {
      static = "9015"
      }
      }

      task "px-node" {
      driver = "docker"
      kill_timeout = "120s" # allow portworx 2 min to gracefully shut down
      kill_signal = "SIGTERM" # use SIGTERM to shut down the nodes

      # setup environment variables for px-nodes
      env {
      AUTO_NODE_RECOVERY_TIMEOUT_IN_SECS = "1500"
      PX_TEMPLATE_VERSION = "V4"
      CSI_ENDPOINT = "unix://var/lib/csi/csi.sock"
      }

      # CSI Driver config
      csi_plugin {
      id = "portworx"
      type = "monolith"
      mount_dir = "/var/lib/csi"
      health_timeout = "30m" # Nomad 1.3.2 and later only
      stage_publish_base_dir = "/var/lib/portworx" # Nomad 1.3.4 and later only
      }

      # container config
      config {
      image = "portworx/oci-monitor:2.11.1"
      network_mode = "host"
      ipc_mode = "host"
      privileged = true

      # configure your parameters below
      # do not remove the last parameter (needed for health check)
      args = [
      "-c", "px-cluster-nomadv1",
      "-a",
      "-b",
      "-k", "consul://127.0.0.1:8500",
      "--endpoint", "0.0.0.0:9015"
      ]

      volumes = [
      "/var/cores:/var/cores",
      "/var/run/docker.sock:/var/run/docker.sock",
      "/run/containerd:/run/containerd",
      "/etc/pwx:/etc/pwx",
      "/opt/pwx:/opt/pwx",
      "/proc:/host_proc",
      "/etc/systemd/system:/etc/systemd/system",
      "/var/run/log:/var/run/log",
      "/var/log:/var/log",
      "/var/run/dbus:/var/run/dbus"
      ]

      }

      # resource config
      resources {
      cpu = 1024
      memory = 2048
      }

      }
      }
      }
  2. Start Portworx as a job:

    nomad job run portworx.nomad

Enable PX-Security

Portworx uses a secure system secret to communicate with itself and other Portworx nodes, and a shared secret to generate application, volume, user, and admin tokens.

To enable PX-Security, update the "env" section in your job config.

  1. Generate a secure system secret for PX-Security. You can store this in an environment variable temporarily:

    PORTWORX_AUTH_SYSTEM_KEY=$(cat /dev/urandom | base64 | fold -w 64 | head -n 1) \
  2. Generate a shared secret. You can store this in an environment variable temporarily:

    PORTWORX_AUTH_SHARED_SECRET=$(cat /dev/urandom | base64 | fold -w 64 | head -n 1)
  3. Pick an issuer name for your cluster. This is typically a company name, deployment name, region, or a combination of those. You can store this in an environment variable temporarily:

    PORTWORX_AUTH_JWT_ISSUER=portworx-uswest-02-cluster1.io
  4. Populate the values in your portworx.nomad job env section with the values you generated in the steps above:

          # setup environment variables for px-nodes
    env {
    "AUTO_NODE_RECOVERY_TIMEOUT_IN_SECS" = "1500"
    "PX_TEMPLATE_VERSION" = "V4"
    "PORTWORX_AUTH_SYSTEM_KEY" = "<PORTWORX_AUTH_SYSTEM_KEY>"
    "PORTWORX_AUTH_JWT_SHAREDSECRET" = "<PORTWORX_AUTH_SHARED_SECRET>"
    "PORTWORX_AUTH_JWT_ISSUER" = "<ISSUER_NAME>"
    }
  5. Deploy Portworx with security enabled:

    nomad job run portworx.nomad
note

To start using Portworx on Nomad with security enabled, you can follow the steps on securing your volumes.

Monitoring the installation process

Check status and wait for all instances to be healthy:

nomad status portworx
ID            = portworx
Name = portworx
Submit Date = 2019-05-08T00:48:39Z
Type = service
Priority = 50
Datacenters = dc1
Status = running
Periodic = false
Parameterized = false

Summary
Task Group Queued Starting Running Failed Complete Lost
portworx 0 0 3 0 0 0

Latest Deployment
ID = 64d1d011
Status = successful
Description = Deployment completed successfully

Deployed
Task Group Auto Revert Desired Placed Healthy Unhealthy Progress Deadline
portworx true 3 3 3 0 2019-05-08T01:00:40Z

Allocations
ID Node ID Task Group Version Desired Status Created Modified
20a20fd0 e074a6b0 portworx 0 run running 2m9s ago 23s ago
54f759fa 2299a3b6 portworx 0 run running 2m9s ago 9s ago
c44ee856 6138409d portworx 0 run running 2m9s ago 10s ago

You can also follow the logs to wait for Portworx to be ready.

In the example below, I am using the first allocation ID, which is 20a20fd0:

nomad alloc logs -f 20a20fd0
...
@ip-10-1-1-199 portworx[2414]: time="2019-05-07T15:35:18Z" level=info msg="PX is ready on Node: 6f160613-1fe4-45c4-8d04-079f3bde2921. CLI accessible at /opt/pwx/bin/pxctl."
....

After that, you can ssh to any one of Nomad clients and check the status using pxctl:

pxctl status
Status: PX is operational
License: Trial (expires in 31 days)
Node ID: 6f160613-1fe4-45c4-8d04-079f3bde2921
IP: 10.1.1.199
Local Storage Pool: 1 pool
POOL IO_PRIORITY RAID_LEVEL USABLE USED STATUS ZONE REGION
0 LOW raid0 50 GiB 4.3 GiB Online us-east-2a us-east-2
Local Storage Devices: 1 device
Device Path Media Type Size Last-Scan
0:1 /dev/xvdd STORAGE_MEDIUM_SSD 50 GiB 07 May 19 15:35 UTC
total - 50 GiB
Cluster Summary
Cluster ID: px-cluster-nomadv4
Cluster UUID: 8e955967-9c74-4465-8014-610c3fe3c0d7
Scheduler: none
Nodes: 3 node(s) with storage (3 online)
IP ID SchedulerNodeName StorageNode Used Capacity Status StorageStatus Version Kernel OS
10.1.1.111 8a003439-d361-4cfa-8e53-2c32f808290e 8a003439-d361-4cfa-8e53-2c32f808290e Yes 4.3 GiB 50 GiB Online Up 2.1.1.0-9df38f7 4.4.0-1079-aws Ubuntu 16.04.6 LTS
10.1.1.199 6f160613-1fe4-45c4-8d04-079f3bde2921 6f160613-1fe4-45c4-8d04-079f3bde2921 Yes 4.3 GiB 50 GiB Online Up (This node) 2.1.1.0-9df38f7 4.4.0-1079-aws Ubuntu 16.04.6 LTS
10.1.2.34 5f51038a-5296-492a-894e-031bab836747 5f51038a-5296-492a-894e-031bab836747 Yes 4.3 GiB 50 GiB Online Up 2.1.1.0-9df38f7 4.4.0-1079-aws Ubuntu 16.04.6 LTS
Global Storage Pool
Total Used : 13 GiB
Total Capacity : 150 GiB
note

If Portworx crashes or you stop it on a node, Nomad will currently not detect that Portworx is unhealthy and restart the container.

Post-Install

Once you have successfully installed Portworx using a Nomad job, the following sections might be useful.

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