Help Center/ MapReduce Service/ User Guide (Kuala Lumpur Region)/ FusionInsight Manager Operation Guide (Applicable to 3.x)/ Alarm Reference (Applicable to MRS 3.x)/ ALM-45276 Abnormal RangerAdmin status
Updated on 2022-08-12 GMT+08:00
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ALM-45276 Abnormal RangerAdmin status

Description

The alarm module checks the RangerAdmin status every 60 seconds. This alarm is generated when the RangerAdmin status is abnormal.

This alarm is cleared after the RangerAdmin status recovers.

Attributes

Alarm ID

Alarm Severity

Automatically Cleared

45276

Major

Yes

Parameters

Name

Meaning

Source

Cluster for which the alarm is generated.

ServiceName

Service for which the alarm is generated.

RoleName

Role for which the alarm is generated.

HostName

Host for which the alarm is generated.

Impact on the System

If the status of a single RangerAdmin is abnormal, the access to the Ranger native UI is not affected. When the status of two RangerAdmins is abnormal, the native UI of Ranger cannot be accessed, and policies cannot be created, modified, or deleted.

Possible Causes

The RangerAdmin port is not started.

Procedure

Check the port process.

  1. In the alarm list on FusionInsight Manager, locate the row that contains the alarm, and click to query the host name.
  2. Log in to the node where the abnormal RangerAdmin instance resides as user omm. Run the ps -ef|grep "proc_rangeradmin" | grep -v grep | awk -F ' ' '{print $2}' command to obtain pid of the RangerAdmin process, and run the netstat -anp|grep pid | grep LISTEN command to check whether the RangerAdmin process listens to port 21401 for a cluster in security mode and port 21400 for a cluster in normal mode.

    • If yes, go to 4.
    • If no, restart the faulty RangerAdmin instance or Ranger service and go to 3.

  3. In the alarm list, check whether the Abnormal RangerAdmin status alarm is cleared.

    • If yes, no further action is required.
    • If no, go to 4.

Collect the fault information.

  1. On FusionInsight Manager, choose O&M > Log > Download.
  2. Expand the Service drop-down list, and select Ranger for the target cluster.
  3. Click in the upper right corner, and set Start Date and End Date for log collection to 1 hour ahead of and after the alarm generation time, respectively. Then, click Download.
  4. Contact O&M personnel and provide the collected logs.

Alarm Clearing

After the fault that triggers the alarm is rectified, the alarm is automatically cleared.

Related Information

None