Steps to patch Linux/RHEL server.
Today we will look linux server patching process in short. It is quite simple, however very useful to know the steps. Linux Production Server Patching Steps Pre-requisite:- I am assuming...
Tag: kernel
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NTP Issue: How to solve “NTP Syncing against LOCAL.”error ?
In this post, we will see one of the common NTP issue and its solution. I. Error Message "NTP Syncing against LOCAL." II. Meaning of this error message NTP...
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How to check when Linux kernel is updated on server ?
Lets see a quick tip today to see how to check when our system kernel is last updated on server. It helps us to identify when our last kernel updated...
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Difference between RHEL 7 and RHEL 8 ?
Today we will look at differences between RHEL 8 and 7. This is one of the interesting article as there are not major differences here. I. Major noticeable differences RHEL...
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How to analyze memory in kernel crash dump on linux ?
Today in this article, we will look how to analyze a core file generated after the system crash. The article is very useful to extract some of the basic information...
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Solved: Why Linux Server rebooted when all LUN paths failed ?
Today in this article, we will see an interesting issue what i faced on one of the production server which got rebooted automatically during a SAN switch replacement activity. ...
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What is hung task and how to panic our RHEL/centos system when a task remains hanged for specific period of time ?
The hung task is detected by linux kernel by parsing processes with uninterruptible sleep state(which are waiting for some event or resource and is usually not going to move forward)...
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How to see Kernel Package level on Solaris 10 and Solaris 11 ?
Today we will see how to check out kernel package level in Unix – Oracle Solaris 10 and 11. Checking Kernel Package Version in Solaris I. Using PKG Command root@ngeui742:~#...
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Solved: libvirt: Storage Driver error : internal error: storage volume name ‘XXX.ngelinux.com_disk1.qcow2’ already in use.
Today we will see how to correct one of the common error message seen when we try to add a virtual machine in KVM on RHEL server. Lets try to...
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Solved: Not able to see console after POST in Redhat Enterprise Linux or Centos.
Some Linux Operating Systems, or RHEL versions sometimes disable console video and you might be not able to see remote console after POST. This happens due to a kernel issue...