ALM-45615 CDL Service Unavailable

Alarm Description

The system checks the CDL health status every 60 seconds. This alarm is generated when the CDL health status is DOWN. This alarm is cleared when the system detects that the CDL health status is UP.

Alarm Attributes

Alarm ID	Alarm Severity	Alarm Type	Service Type	Auto Cleared
45615	Critical	Quality of service	CDL	Yes

Alarm Parameters

Type	Parameter	Description
Location Information	Source	Specifies the cluster for which the alarm was generated.
	ServiceName	Specifies the service for which the alarm was generated.
	RoleName	Specifies the role for which the alarm was generated.
	HostName	Specifies the host for which the alarm was generated.

Impact on the System

The CDL service is abnormal. You cannot use FusionInsight Manager to perform cluster operations on the CDL service. The CDL service function is unavailable.

Possible Causes

All CDLService or CDLConnector instances of the CDL service are abnormal, and the Kafka service is unavailable.

Handling Procedure

Check whether the Kafka service on which the CDL service depends is abnormal.

On FusionInsight Manager, choose O&M > Alarm > Alarms.
In the alarm list, check whether ALM-38000 Kafka Service Unavailable exists.
- If yes, go to 3.
- If no, go to 5.
Handle the alarm by referring to "ALM-38000 Kafka Service Unavailable".
After the alarm is cleared, wait a few minutes and check whether the alarm HetuServer Service Unavailable is cleared.
- If yes, no further action is required.
- If no, go to 5.

Check whether CDL instances are faulty.

On FusionInsight Manager, choose Cluster > Name of the desired cluster > Service > CDL > Instance.
Check whether all CDLService and CDLConnector instances are faulty.
- If yes, restart the CDL service and choose Cluster > Name of the desired cluster > Services > CDL > More > Restart Service. If the fault persists after the restart, go to 7 and contact O&M personnel to check CDL logs.
- If no, go to 7.

Collect the fault information.

On FusionInsight Manager, choose O&M. In the navigation pane on the left, choose Log > Download.
Expand the Service drop-down list, and select CDL for the target cluster.
Click the edit icon in the upper right corner, and set Start Date and End Date for log collection to 30 minutes ahead of and after the alarm generation time, respectively. Then, click Download.
Contact O&M engineers and provide the collected logs.