Issue Description

The VMP interface does not give an alert when the network cable is unplugged.

Handling Process

1. Check the kernel log /sf/log/today/kernel.log and found that there is a record of the network interface is down.

2. In the /sf/log/today/sfvt_vtpalertd.log log, it is reported that the network interface is offline and online, but there is no events in the alarm on the web interface.

3. Try to execute the /sf/etc/init.d/vtplogd restart command to restart the vtplogd alarm service, but still no alarms generated.

4. After executing /sf/etc/init.d/redis-server restart, the web interface able generate the alarm normally.

Root Cause

The backend vtpalertd shows that the alarm has been generated normally, but the redis-server service is abnormal and unable to transmit to the vtplogd alarm service, which will display on the web interface. The transmission step is to transmit between the three services. (vtpalertd-redis-vtplogd)

Solution

sf/etc/init.d/redis-server restart
/sf/etc/init.d/vtplogd restart
Restart the alarm service

Remark

Restarting these two services does not affect the production/business.