Most of Aria Operations Integrations have active Alert : 'Adapter instance Object is down'. However these are green in Integrations. - Aria Operations

Products

• VCF Operations/Automation (formerly VMware Aria Suite)

Issue/Introduction

Active Alerts like 'Adapter instance Object is down' or 'Adapter instance is not receiving data' are triggered for most of the Aria Operations adapters.

There are performance issues noticed in the cluster when running reports / opening dashboards etc.

In Administration-> Support logs -> 'analytics-<UUID>.log you can see entries like below:

2025-04-14T08:44:12,979+0000 WARN  [Collector worker thread 7]  com.vmware.vcops.platform.common.DataForwarder.sendForwardDataByAlt - Failed to send forward data through channel : IRawDataForwarder.NotEnoughBufferSpace: org.apache.geode.cache.CacheWriterException: FORWARD_DATA_ALT_REGION region exceed the maximum number (20000) of entries.
2025-04-14T08:44:13,182+0000 FATAL [Collector worker thread 7]  com.vmware.vcops.platform.common.DataForwarder.sendForwardDataByAlt - Failed to send data: forward data queue is backing up, data is being lost!
2025-04-14T08:44:13,188+0000 WARN  [Collector worker thread 7]  com.vmware.vcops.platform.common.DataForwarder.sendForwardDataByAlt - Failed to send forward data through channel : IRawDataForwarder.NotEnoughBufferSpace: org.apache.geode.cache.CacheWriterException: FORWARD_DATA_ALT_REGION region exceed the maximum number (20000) of entries.

Environment

Aria Operations 8.x

Cause

Cluster has a lot of 'Not -existing' objects causing cluster to be undersized as per VMware Aria Operations Sizing Guidelines

 

Resolution

Please check if your cluster has a lot of non-existing objects.

• Go to Operations -> Configurations -> Inventory Management -> Collection States -> Not existing(xxx)
• Check the number represented as xxx, if it is in thousands please clean up these objects by changing the setting in global settings page.
• Go to Administration -> Global Settings -> Data retention adjust below fields according to need. for example:
  

 

If there are not many non-existing objects please review the article VMware Aria Operations Sizing Guidelines carefully to check maximum limits for your cluster. Aria Operations must be below the allowed limits mentioned in the article.

Please Note: 

• In HA, each object is replicated in some nodes of a cluster, hence the limit for HA based instance is two times less compare to non HA.
• In CA, each object is replicated in paired nodes of a cluster, hence the limit for a CA based instance is two times less compared to non CA

Once the cluster is correctly sized restart collection on the affected adapters from Integrations page. they should start collecting and alert should automatically cancelled after 5-10 minutes