Understanding the 'Warning: journal has been rotated' Message for SNMP Service

Products

• VMware NSX

Issue/Introduction

When checking the status of the SNMP service on components such as NSX Manager, the following warning message may appear:

# service vmware-snmpd status
* vmware-snmpd.service - VMware SNMPD
     Loaded: loaded (/lib/systemd/system/vmware-snmpd.service; enabled; vendor preset: enabled)
     Active: active (running) since <timestamp> ; 1 years 4 months ago
   Main PID: ### (snmpd)
      Tasks: 1 (limit: 57719)
     Memory: 2.5M
     CGroup: /system.slice/vmware-snmpd.service
             `-### /opt/vmware/bin/snmpd

<snip>
Warning: journal has been rotated since unit was started, output may be incomplete.

Environment

VMware NSX

Cause

This message is a warning regarding the systemd journal log. It indicates that since the service (e.g., vmware-snmpd) was started, the log files have undergone rotation (old logs were deleted or compressed).

This warning refers to the availability of historical logs and does not indicate a failure or impact on the current operational state of the service.

Resolution

If the service is confirmed to be running normally, no action is required.

Additional Information

This message may also appear on other services.