NetBackup™ Snapshot Manager Install and Upgrade Guide
- Introduction
- Section I. NetBackup Snapshot Manager installation and configuration
- Preparing for NetBackup Snapshot Manager installation
- Deploying NetBackup Snapshot Manager using container images
- Deploying NetBackup Snapshot Manager extensions
- Installing the NetBackup Snapshot Manager extension on a VM
- Installing the NetBackup Snapshot Manager extension on a managed Kubernetes cluster (AKS) in Azure
- Installing the NetBackup Snapshot Manager extension on a managed Kubernetes cluster (EKS) in AWS
- Installing the NetBackup Snapshot Manager extension on a managed Kubernetes cluster (GKE) in GCP
- NetBackup Snapshot Manager cloud providers
- Configuration for protecting assets on cloud hosts/VM
- Protecting assets with NetBackup Snapshot Manager's on-host agent feature
- Installing and configuring NetBackup Snapshot Manager agent
- Configuring the NetBackup Snapshot Manager application plug-in
- Microsoft SQL plug-in
- Oracle plug-in
- Protecting assets with NetBackup Snapshot Manager's agentless feature
- NetBackup Snapshot Manager assets protection
- Volume Encryption in NetBackup Snapshot Manager
- NetBackup Snapshot Manager security
- Preparing for NetBackup Snapshot Manager installation
- Section II. NetBackup Snapshot Manager maintenance
- NetBackup Snapshot Manager logging
- Upgrading NetBackup Snapshot Manager
- Migrating and upgrading NetBackup Snapshot Manager
- Post-upgrade tasks
- Uninstalling NetBackup Snapshot Manager
- Troubleshooting NetBackup Snapshot Manager
SQL snapshot or restore and granular restore operations fail if the Windows instance loses connectivity with the NetBackup Snapshot Manager host
This issue occurs if the NetBackup Snapshot Manager agent that is configured on a Windows instance loses network connectivity with the NetBackup Snapshot Manager host. NetBackup Snapshot Manager operations such as snapshot creation or restore for SQL Server and granular restore begin to fail for the Windows instance.
The connectivity failure may occur due to various reasons such as a services restart on the NetBackup Snapshot Manager host as part of a NetBackup Snapshot Manager software upgrade or a general network disruption.
The flexsnap-agent logs may contain messages similar to the following:
flexsnap-agent-onhost[2720] MainThread flexsnap.connectors.rabbitmq: ERROR - Unexpected exception() in main loop flexsnap-agent-onhost[2720] MainThread agent: ERROR - Agent failed unexpectedly
If NetBackup Snapshot Manager is deployed in a Veritas NetBackup environment, the NetBackup logs may contain messages similar to the following:
Error nbcs (pid=5997) Failed to create snapshot for asset: <sqlassetname> Error nbcs (pid=5997) Operation failed. Agent is unavailable.
Workaround:
To resolve this issue, restart the Veritas NetBackup Snapshot Manager Agent
service on the Windows instance.