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NetBackup™ for Apache Cassandra Administrator's Guide

Last Published: 2024-09-30

Product(s): NetBackup & Alta Data Protection (10.5)

Errors and recommended actions

The following table describes the problem that might occur.

Table: Error and recommended actions

Error message or cause	Explanation and recommended action
CBR node not reachable.	The CBR node in the DSS cluster is not reachable. Recommended actions: Verify the node that specified as the CBR node is up, and reachable from the backup host. If required, add a new node to the DSS cluster to change the CBR node.
CBR RSA key mismatch.	The CBR node RSA key specified do not match with the RSA key provided by the CBR node. Recommended actions: Do one of the following to specify the correct RSA key for the CBR node. Add a new node in the DSS cluster. Select the CBR node and enter the respective RSA key.
CBR is reachable, but some nodes not reachable.	Some of the nodes in the DSS cluster are not reachable. Recommended actions: Ensure that the nodes which are mentioned in the DSS cluster are up and running and are reachable from the backup host. Add new nodes from the DSS cluster details.
Invalid nodes in the cluster. Credentials are invalid. Apache Cassandra not installed.	The nodes in the clusters are invalid or unable be log in indicates the possibility that Apache Cassandra is not installed. Recommended actions: Ensure that correct credentials are entered on clusters. Select a different account for the cluster credentials in NetBackup. Note: The credentials must be valid on all the cluster nodes. Ensure that Apache Cassandra is installed on all the nodes. Note: All nodes must have the same version of Apache Cassandra.
CBR credentials mismatch.	The DSS cluster's credentials are invalid on the CBR node. Recommended actions: Ensure that correct credentials are entered on the CBR node. Select a different credential for the DSS cluster in NetBackup. Note: The credentials must be valid on all the cluster nodes.
DSS node credentials are invalid.	The credentials that specified for the DSS node are not valid. Recommended actions: Ensure that correct credentials are entered on the DSS node. Select a different account for the DSS cluster in NetBackup. Note: The credentials must be valid on all the cluster nodes.
Discovery nodes not reachable.	The Discovery node for the Cassandra cluster is not reachable. Recommended actions: Ensure that the specified node is up and running. Ensure that the Apache Cassandra service is up and running on the node. Edit the Apache Cassandra cluster settings to change the discovery node.
Discovery node RSA mismatch.	The status of the cluster is Pending for approval. Recommended action: Approve the RSA key of discovery node.
Discovery node credentials invalid.	The credentials of the Cassandra cluster are invalid for the discovery node. Recommended actions: Ensure that correct credentials are entered on the discovery node. Select a different credential for the Cassandra cluster in NetBackup. Note: The credentials must be valid on all the nodes in the Cassandra cluster.
Apache Cassandra not installed on the discovery node.	The Apache Cassandra is not installed on the discovery node of the Cassandra configuration. Recommended actions: Select a different node for discovery in the Apache Cassandra cluster.
Apache Cassandra cluster name not matched.	The discovery node belongs to a different cluster. Recommended actions: Enter the correct cluster name in Cassandra cluster configuration in NetBackup. Select the correct discovery node for the cluster.
Datacenter name not matched.	The data center name of the Cassandra nodes mismatch. Recommended action: Change the name of the data center in Cassandra cluster configuration in NetBackup.
Cassandra Cluster pending approval.	One ore more nodes in the Cassandra cluster and RSA key require approval. Recommended action: Review and approve the RSA key on the node.
Cassandra nodes invalid credentials.	Cassandra cluster credentials mismatch with one or more nodes in the cluster. Recommended action: Select the correct credentials for the Cassandra cluster. Note: The credentials must be valid on all the Cassandra cluster.
The Cassandra DSS cluster and/or Cassandra production cluster goes into invalid status due to concurrent operations.	NetBackup can do only one operation such as discovery, validate, backup, restore, at any given point in time on the DSS and production clusters. If one operation is running, the other fails and put the cluster in invalid state. If the cluster is in invalid state while the previous operation is running, wait for the pervious operation to complete. Then retry the operation you previous operation like discovery, validation, backup now or restore.
Discovery of more than one cluster take time and doesn't show the discovering status immediately.	NetBackup works, discovery one cluster at a time hence the state of the second cluster changes after the first one is complete and reflect the appropriate status after completion.
Cassandra restore page becomes unresponsive for keyspaces/column families more than 300.	Use computer with higher configuration for example RAM size is 16GB or more.
Incremental backup fails with Error 6.	Recommended action: Verify if the scheduled full backup is completed. Note: Full backup run with a use of Backup now is not considered as it is not linked to scheduled backup.
Backup/restore does not work post primary cluster node failover.	Recommended action: For primary server cluster, after the fail-over of node, update the primary server's `bp.conf` with `APP_PROXY_SERVER = NetBackup media server`. Note: NetBackup media server is used as the backup host.
no java in (/sbin:/bin:/usr/sbin:/usr/bin) Java executable not found (hint: set JAVA_HOME)	Recommended action: Update the `secure_path` list with Java executable path in `/etc/sudoers` file.
DSS or production cluster status goes into unknown state during cluster validation	Recommended action: Edit and update the credentials from Credential management page and perform the cluster validation again. Add new credentials from Credential management page and then select desired credentials from the existing credential list using Manage credential option in DSS or Apache clusters page.