Event generation, alarms generated from Cluster hosts or deployed Edge services such as VPN, Load Balancer in the ESG are stored in NSX Manager postgres DB. Continuous and frequent generation of events and alarms from hosts and ESGs overwhelm postgres database in the NSX Manager. Purge task running in the NSX Manager to remove the old tasks from postgres database at regular intervals. This purge task cannot keep up with the number of events and alarms being generated causing postgres to increase in size and result in ‘/common’ to be filled to 100% capacity.
This issue is resolved in VMware NSX for vSphere 6.4.5, available at VMware Downloads.
To work around this issue if you do not want to upgrade, file a support request with VMware Support and quote this Knowledge Base article ID (67082) in the problem description. For more information, see How to Submit a Support Request.