Veritas InfoScale™ for Kubernetes Environments 8.0.100 - Linux

Last Published:
Product(s): InfoScale & Storage Foundation (8.0.100)
  1. Overview
    1.  
      Introduction
    2.  
      Features of InfoScale in Containerized environment
    3.  
      CSI Introduction
    4.  
      I/O fencing
    5.  
      Disaster Recovery
    6.  
      Licensing
  2. System requirements
    1.  
      Introduction
    2.  
      Supported platforms
    3.  
      Disk space requirements
    4.  
      Hardware requirements
    5.  
      Number of nodes supported
    6.  
      DR support
  3. Preparing to install InfoScale on Containers
    1. Setting up the private network
      1.  
        Guidelines for setting the media speed for LLT interconnects
      2.  
        Guidelines for setting the maximum transmission unit (MTU) for LLT
    2.  
      Synchronizing time settings on cluster nodes
    3.  
      Securing your InfoScale deployment
    4.  
      Configuring kdump
  4. Installing Veritas InfoScale on OpenShift
    1.  
      Introduction
    2.  
      Prerequisites
    3.  
      Additional Prerequisites for Azure RedHat OpenShift (ARO)
    4. Installing InfoScale on a system with Internet connectivity
      1. Installing from OperatorHub by using web console
        1.  
          Adding Nodes to an InfoScale cluster by using OLM
        2.  
          Undeploying and uninstalling InfoScale
      2. Installing from OperatorHub by using Command Line Interface (CLI)
        1.  
          Configuring cluster
        2.  
          Adding nodes to an existing cluster
        3.  
          Undeploying and uninstalling InfoScale by using CLI
      3. Installing by using YAML
        1.  
          Configuring cluster
        2.  
          Adding nodes to an existing cluster
        3.  
          Undeploying and uninstalling InfoScale
    5. Installing InfoScale in an air gapped system
      1.  
        Prerequisites to install by using YAML
      2.  
        Prerequisites to install by using OLM
      3.  
        Installing from OperatorHub by using web console
      4.  
        Installing from OperatorHub by using Command Line Interface (CLI)
      5.  
        Installing by using YAML
  5. Installing Veritas InfoScale on Kubernetes
    1.  
      Introduction
    2. Prerequisites
      1.  
        Installing Node Feature Discovery (NFD) Operator and Cert-Manager on Kubernetes
    3.  
      Installing the Special Resource Operator
    4.  
      Applying licenses
    5. Tagging the InfoScale images on Kubernetes
      1.  
        Downloading side car images
    6. Installing InfoScale on Kubernetes
      1.  
        Configuring cluster
      2.  
        Adding nodes to an existing cluster
    7.  
      Undeploying and uninstalling InfoScale
  6. Tech Preview: Configuring KMS-based Encryption on an OpenShift cluster
    1.  
      Introduction
    2.  
      Adding a custom CA certificate
    3.  
      Configuring InfoScale to enable transfer of keys
  7. Tech Preview: Configuring KMS-based Encryption on a Kubernetes cluster
    1.  
      Introduction
    2.  
      Adding a custom CA certificate
    3.  
      Configuring InfoScale to enable transfer of keys
  8. InfoScale CSI deployment in Container environment
    1.  
      CSI plugin deployment
    2.  
      Static provisioning
    3. Dynamic provisioning
      1.  
        Reclaiming provisioned storage
    4.  
      Resizing Persistent Volumes (CSI volume expansion)
    5. Snapshot provisioning (Creating volume snapshots)
      1.  
        Dynamic provisioning of a snapshot
      2.  
        Static provisioning of an existing snapshot
      3.  
        Using a snapshot
      4.  
        Restoring a snapshot to new PVC
      5.  
        Deleting a volume snapshot
    6. Managing InfoScale volume snapshots with Velero
      1.  
        Setting up Velero with InfoScale CSI
      2.  
        Taking the Velero backup
      3.  
        Creating a schedule for a backup
      4.  
        Restoring from the Velero backup
    7. Volume cloning
      1.  
        Creating volume clones
      2.  
        Deleting a volume clone
    8.  
      Using InfoScale with non-root containers
    9.  
      Using InfoScale in SELinux environments
    10.  
      CSI Drivers
    11.  
      Creating CSI Objects for OpenShift
  9. Installing and configuring InfoScale DR Manager on OpenShift
    1.  
      Introduction
    2.  
      Prerequisites
    3.  
      Creating Persistent Volume for metadata backup
    4.  
      External dependencies
    5. Installing InfoScale DR Manager by using OLM
      1.  
        Installing InfoScale DR Manager by using web console
      2.  
        Configuring InfoScale DR Manager by using web console
      3.  
        Installing from OperatorHub by using Command Line Interface (CLI)
    6. Installing InfoScale DR Manager by using YAML
      1.  
        Configuring Global Cluster Membership (GCM)
      2.  
        Configuring Data Replication
      3.  
        Additional steps for Azure RedHat OpenShift(ARO) environment
      4.  
        Configuring DNS
      5.  
        Configuring Disaster Recovery Plan
  10. Installing and configuring InfoScale DR Manager on Kubernetes
    1.  
      Introduction
    2.  
      Prerequisites
    3.  
      Creating Persistent Volume for metadata backup
    4.  
      External dependencies
    5. Installing InfoScale DR Manager
      1.  
        Configuring Global Cluster Membership (GCM)
      2.  
        Configuring Data Replication
      3.  
        Configuring DNS
      4.  
        Configuring Disaster Recovery Plan
  11. Disaster Recovery scenarios
    1.  
      Migration
    2.  
      Takeover
  12. Configuring InfoScale
    1.  
      Logging mechanism
    2.  
      Configuring Veritas Oracle Data Manager (VRTSodm)
  13. Troubleshooting
    1.  
      Collecting logs by using SORT Data Collector
    2.  
      Known Issues
    3.  
      Limitations

I/O fencing

InfoScale uses majority-based I/O fencing to guarantee data protection and provide persistent storage in the Container environment. Fencing ensures that data protection gets highest priority and stops running the systems when a split-brain condition is encountered. The systems thus cannot start services and data is protected. InfoScale checks for the connectivity with each peer nodes periodically while OpenShift or Kubernetes check it for the master to worker nodes.

The OpenShift or Kubernetes cluster performs failover or restart of applications for the nodes that have reached a NotReady state in the OpenShift or Kubernetes cluster. If an application is configured as a statefulset pod, the Container stops the failover of such application pods till the node becomes active again. In such scenarios, InfoScale uses the fencing module to ensure that the application pods running on such unreachable nodes cannot access the persistent storage so that OpenShift or Kubernetes can restart these pods on the active cluster without the risk of any data corruption.

When InfoScale cluster is deployed on an OpenShift or Kubernetes, InfoScale uses a custom fencing controller to provide the fencing infrastructure. The custom controller interacts with the InfoScale fencing driver and enables failover in OpenShift or Kubernetes in case of network split. An agent running on the controller ensures that InfoScale fences out the persistent storage and performs the pod failover for the fenced-out node. It also ensures that the fencing decisions of InfoScale I/O fencing do not conflict with the fencing decisions of the fencing controller.

For deployment in containerized environments, when you install InfoScale by using the product installer, the fencing module is automatically installed and configured in majority mode. In case of network split, the I/O fencing module takes fencing decisions based on the number of nodes in a sub-cluster.

The hostnames of InfoScale nodes must exactly match the FQDN of the OpenShift or Kubernetes nodes for a successful configuration.