Help Center/ MapReduce Service/ User Guide/ Alarm Reference (Applicable to MRS 3.x)/ ALM-12042 Incorrect Configuration of Key Files
Updated on 2022-09-26 GMT+08:00
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ALM-12042 Incorrect Configuration of Key Files

Description

The system checks whether critical configurations are correct every 5 minutes. This alarm is generated when the configurations are abnormal.

This alarm is cleared when the configurations become normal.

Attribute

Alarm ID

Alarm Severity

Auto Clear

12042

Major

Yes

Parameters

Name

Meaning

Source

Specifies the cluster or system for which the alarm is generated.

ServiceName

Specifies the service name for which the alarm is generated.

RoleName

Specifies the role name for which the alarm is generated.

HostName

Specifies the object (host ID) for which the alarm is generated.

PathName

Specifies the path or name of the abnormal file.

Impact on the System

Functions related to the file are abnormal.

Possible Causes

The file configuration is modified manually or the system is powered off unexpectedly.

Procedure

Check abnormal file configuration.

  1. On the FusionInsight Manager portal, choose O&M > Alarm > Alarms.
  2. Check the value of HostName to obtain the host name involved in this alarm. Check the value of PathName to obtain the path or name of the abnormal file.
  3. Log in to the node for which the alarm is generated as user root.
  4. View the $BIGDATA_LOG_HOME/nodeagent/scriptlog/checkfileconfig.log file and analyze the cause based on the error log. Locate the check standards of the file in the Related Information and manually check and modify the file based on the standards.

    Run the vi file name command to enter the editing mode, and then press Insert to start editing.

    After the modification is complete, press Esc to exit the editing mode and enter :wq to save the settings and exit.

    For example:

    vi /etc/ssh/sshd_config

  5. Wait a hour and check whether the alarm is cleared.

    • If yes, no further action is required.
    • If no, go to 6.

Collect fault information.

  1. On the FusionInsight Manager portal, choose O&M > Log > Download.
  2. Select NodeAgent from the Service and click OK.
  3. Click 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.
  4. Contact the O&M personnel and send the collected log information.

Alarm Clearing

After the fault is rectified, the system automatically clears this alarm.

Related Information

  • Check standards of /etc/fstab

    Check whether the partitions configured in the /etc/fstab file can be found in /proc/mounts.

    Check whether the swap partitions configured in fstab correspond to those in /proc/swaps.

  • Check the /etc/hosts configuration file.

    Run cat /ect/hosts. If any of the following situations occurs, the /etc/hosts configuration file is abnormal:

    1. The /etc/hosts file does not exist.
    2. The host name is not configured in the file.
    3. The host name maps to multiple IP addresses in the file.
    4. The IP address corresponding to the host name does not exist in the command output of the ifconfig command.
    5. One IP address maps to multiple host names in the file.
  • Check standards of /etc/ssh/sshd_config

    Run the vi /etc/ssh/sshd_config command to check whether configuration items are configured as follows:

    1. The value of UseDNS must be set to no.
    2. The value of MaxStartups must be greater than or equal to 1000.
    3. At least one of the PasswordAuthentication and ChallengeResponseAuthentication parameters must be left blank or at least one of the parameters be set to yes.