NSX Manager is Slow To Load And Tasks Fail

NSX Manager is slow to load and tasks fail with message server is overloaded or too many requests.

Cause

This issue occurs upon hitting the nsx manager incoming API rate limit. The solution is to either limit the number of incoming API requests to NSX Manager or modify the default values for Client API rate limit or Client API concurrency limit or Global API concurrently limit from API or CLI.

Solution

1. To view current default values, run get cluster api-service as admin or GET API /api/v1/cluster/api-service.
2. To set a new API rate value, run set cluster api-service client-api-rate-limit or PUT /api/v1/cluster/api-service with updated values.
3. To view logs of incoming API requests, go to /var/log/proxy directory, reverse-proxy.log.
   Note: Try to avoid configuring the API rate limits. Instead, design your API client to gracefully deal with situations where limits are exceeded.