Help Center > > User Guide> FusionInsight Manager Operation Guide (Applicable to 3.x)> Alarm Reference (Applicable to MRS 3.x)> ALM-12066 Inter-Node Mutual Trust Fails

ALM-12066 Inter-Node Mutual Trust Fails

Updated at: Sep 02, 2021 GMT+08:00

Alarm Description

The system checks whether the trust relationship between the active OMS node and other Agent nodes is normal every hour. This alarm is generated if the mutual trust fails. This alarm is automatically cleared if this problem is resolved.

Attribute

Alarm ID

Alarm Severity

Auto Clear

12066

Major

Yes

Parameters

Parameter

Description

Source

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

ServiceName

Specifies the name of the service for which the alarm is generated.

RoleName

Specifies the role for which the alarm is generated.

HostName

Specifies the host for which the alarm is generated.

Impact on the System

Some operations on the management plane may be abnormal.

Possible Causes

  • The sshd_config in the /etc/ssh/ directory is damaged.
  • The password of user omm has expired.

Procedure

Check the status of the /etc/ssh/sshd_config configuration file.

  1. In the alarm list on FusionInsight Manager, locate the row that contains the alarm, and view the list of hosts for which the alarm is generated.
  2. Log in to the active OMS node as user omm.
  3. Run the ssh host2 command on each node in the alarm details. (host2 is a node other than the OMS node in the alarm details.) Check whether the password-free connection is fail.

    • If it is, go to 4.
    • If it is not, go to 7.

  4. Open the sshd_config file in the /etc/ssh/ directory on host2 and check whether other nodes are configured in AllowUsers and DenyUsers.

    • If it is, modify the whitelist or blacklist to ensure that user omm is in the whitelist or not in the blacklist.
    • If it is not, contact OS experts.

Check the omm password status.

  1. Check the interaction information of the ssh command.

    • If the omm user password is required, go to 6.
    • If the "Enter passphrase for key '/home/omm/.ssh/id_rsa':" message is displayed, go to 7.

  2. Check the trust list (/home/omm/.ssh/authorized_keys) of user omm on the OMS node and host2 node. Check whether the trust list contains the public key file (/home/omm/.ssh/id_rsa.pub) of user omm on the peer host.

    • If it does, contact OS experts.
    • If it does not, add the public key of user omm of the peer host to the trust list of the local host.

Collect fault information.

  1. On FusionInsight Manager, choose O&M > Log > Download.
  2. Select Controller for 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

None

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