Passwordless SSH requirement on a single-node (non-cluster) Data Repository

Products

• Network Observability
• CA Performance Management

Issue/Introduction

Does DX NetOps Performance Management require passwordless SSH on a single-node (non-cluster) install?

Environment

All supported DX NetOps Performance Management releases

Resolution

• Passwordless SSH must be configured for the dradmin user (or the database administrator user) even on a single-node installation.
• dradmin will have passwordless-ssh setup during install_vertica even in a one node DR.
• The Data Aggregator (DA) and the Data Repository (DR) management scripts (such as those used for backup, restore, and upgrade validation) utilize SSH loops to verify node health and connectivity, regardless of whether a cluster exists.
• Backup vbr.py does use SSH to run rsyncd on backup host, even if it is the same host as source data, this includes daily/nightly Vertica backups as well.
• vbr.py is the only supported backup for vertica