Aria Orchestrator Workflow run logs are missing from the user interface

Products

• VMware Aria Suite

Issue/Introduction

When reviewing Orchestrator (vRO) workflows through Aria Automation, or direct through Aria Orchestrator, the Logs tab in the in the user interface may be blank (black screen).  The issue can present as intermittent and does not always have a correlation with timing or delay.  For example, older workflows may have the logs in the UI but a workflow that just completed could be blank.

Environment

VMware Aria Automation 8.x

VMware Aria Orchestrator 8.x

Cause

In higher volume environments, the indexing of logs written to the filesystem can take longer than the Orchestrator client call to retrieve/display the logs in the user interface.  As there is no reattempt to collect logging made by the Orchestrator client, the tab output will display a blank (or black) output.

Note that the log output is still captured in the filesystem but just not displayed to the UI.

Resolution

This is a known limitation related to a combination of timing and workflow volume.  If this is impacting workflow review or troubleshooting in your environment you will want to implement a log aggregator (Aria Operations for Logs for example) to capture and review the logs.