PowerEdge: Linux OS Running of Resources Causing a Reboot

Summary: SUSE Linux Enterprise Server for SAP was rebooted intermittently, one or two times every week.

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
Check out other resources

Symptoms

SUSE Linux Enterprise Server for SAP was rebooted intermittently, one or two times every week. This is a 2-nodes cluster servers running with SAP HANA.
From the cluster logs, indicated that the secondary rebooted the primary node due to the cluster resource-monitored failure.

Cause

Reviewed the logs before reboot and found as following.


resouces_unavailable 
 

Resolution

With the error "Resource temporarily unavailable," this indicates that the OS was running out of resources.
In this case, check the SAR report at the time before the server rebooted.

00:00:01      runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15   blocked
16:40:01           20     32595      9.01      9.97      5.46         0
16:50:01           15     32611      1.49      2.81      3.70         0

There are 32,611 processes running. However the max processes allowed are:
kernel.pid_max = 32768  (Get this from the log file env.txt or from the OS command "sysctl -a | grep pid_max"
So this concluded the server reached to the max processes allowed. Customer may check with command "ps aux" to review if all the processes are needed or it could be the processes not stopped properly and keep creating new processes.
Fixed the unnecessary processes fixed the issue

Affected Products

SUSE Linux Enterprise Server 12, Red Hat Enterprise Linux Version 7, Red Hat Enterprise Linux Version 8, SUSE Linux Enterprise Server 15

Products

OEMR R240, OEMR R340, OEMR R350, OEMR R360, OEMR R440, OEMR R450, OEMR R540, OEMR R550, OEMR R640, OEMR R650, OEMR R650xs, OEMR R6515, OEMR R6525, OEMR R660, OEMR R660xs, OEMR R6615, OEMR R6625, OEMR R740, OEMR R740xd, OEMR R740xd2, OEMR R7415 , OEMR R750, OEMR R7515, OEMR R7525, OEMR R760, OEMR R760xa, OEMR R760XD2, OEMR R760xs, OEMR R7615, OEMR R7625, OEMR R840, OEMR R860, OEMR R940, OEMR R960, PowerEdge R240, PowerEdge R340, PowerEdge R350, PowerEdge R360, PowerEdge R440, PowerEdge R450, PowerEdge R540, PowerEdge R550, PowerEdge R640, PowerEdge R650, PowerEdge R650xs, PowerEdge R6515, PowerEdge R6525, PowerEdge R660, PowerEdge R660xs, PowerEdge R6615, PowerEdge R6625, PowerEdge R740, PowerEdge R740XD, PowerEdge R740XD2, PowerEdge R7415, PowerEdge R7425, PowerEdge R750, PowerEdge R7515, PowerEdge R7525, PowerEdge R760, PowerEdge R760XA, PowerEdge R760xd2, PowerEdge R760xs, PowerEdge R7615, PowerEdge R7625, PowerEdge R840, PowerEdge R860, PowerEdge R940, PowerEdge R960 ...
Article Properties
Article Number: 000201809
Article Type: Solution
Last Modified: 02 Sept 2025
Version:  2
Find answers to your questions from other Dell users
Support Services
Check if your device is covered by Support Services.