ALM-24011 Flume Certificate File Is About to Expire

This section applies to MRS 3.2.0 or later.

Alarm Description

Flume checks whether the Flume certificate file is about to expire every hour. This alarm is generated when the remaining validity period is at most 30 days. This alarm is automatically cleared when the remaining validity period is greater than 30 days.

Alarm Attributes

Alarm ID	Alarm Severity	Auto Cleared
24011	Major	Yes

Alarm Parameters

Parameter	Description
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

Currently, there is no impact on the system.

Possible Causes

The Flume certificate file is about to expire.

Handling Procedure

View alarm information.

Log in to FusionInsight Manager and choose O&M. In the navigation pane on the left, choose Alarm > Alarms. On the page that is displayed, locate the row containing ALM-24011 Flume Certificate Is About to Expire, and view the Location information. View the IP address of the instance for which the alarm is generated.

Check whether the certificate file in the system is valid. If it is not, generate a new one.

Log in to the node for which the alarm is generated as user root and run the su - omm command to switch to user omm.
Run the following command to go to the Flume service certificate directory:

cd ${BIGDATA_HOME}/FusionInsight_Porter_*/install/FusionInsight-Flume-*/flume/conf
Run the following command to check the effective time and expiration time of the Flume user certificate:

openssl x509 -noout -text -in flume_sChat.crt
Perform 6 to 7 during off-peak hours to update the certificate file as needed.
Run the following command to go to the Flume script directory:

cd ${BIGDATA_HOME}/FusionInsight_Porter_*/install/FusionInsight-Flume-*/flume/bin
Run the following command to generate a new certificate file. Then, check whether the alarm is automatically cleared one hour later.
sh geneJKS.sh -f Custom certificate password of the Flume role on the server -g Custom certificate password of the Flume role on the client
- If yes, go to 9.
- If no, go to 8.
  The custom certificate passwords must meet the following complexity requirements:
  
  Contain at least four types of uppercase letters, lowercase letters, digits, and special characters.
  
  Contain 8 to 64 characters.
  
  Be changed periodically (for example, every three months), and certificates and trust lists are generated again to ensure security.
Log in to the Flume node for which the alarm is generated as user omm and repeat 6 to 7. Then, check whether the alarm is automatically cleared one hour later.
- If yes, go to 9.
- If no, go to 10.
Check whether this alarm is generated again during periodic system check.
- If yes, go to 10.
- If no, no further action is required.

Collect 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 Flume for the target cluster.
Click the edit icon in the upper right corner, and set Start Date and End Date for log collection to 10 minutes ahead of and after the alarm generation time, respectively. Then, click Download.
Contact O&M personnel and provide the collected logs.