Questions tagged [kernel]
In computing, the kernel is the main component of most computer operating systems; it is a bridge between applications and the actual data processing done at the hardware level. The kernel's responsibilities include managing the system's resources (the communication between hardware and software components).
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rpc-gssd.service fails to start on one server
In one of the servers with some inspection of configs the service rpc-gssd fails to start. System is Ubuntu 24.04.3 that has nfs-kernel server installed with currently no shares.
The configs are:
/etc/...
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mariadbd: io_uring_queue_init() failed with EPERM: sysctl kernel.io_uring_disabled ... and the user ... not a member of sysctl kernel.io_uring_group
I've been fighting to silence the following warning for an hour now:
[Warning] mariadbd: io_uring_queue_init() failed with EPERM: sysctl kernel.io_uring_disabled has the value 2, or 1 and the user of ...
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How to debug ISO image loading via iPXE&HTTP?
In general, I'm trying to load the Ultimate Boot CD via HTTP (iPXE). The structure is as follows:
CD
---\boot
-------\grub
-------\isolinux
---\pmagic
-------\boot
------------\syslinux
-------\...
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Building Kubernetes cluster lab on Incus system containers [closed]
I am trying to build a lab Kubernetes cluster in a Linux host, using Incus system containers as nodes. I want to do it in an automated way using Terraform and Ansible.
The current status of the work ...
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High TCP retransmissions from RHEL 8.6 client (BBR) to RHEL 7.9 server (Cubic) during iperf3 test [closed]
We're testing TCP performance between a client and server using iperf3 in a controlled environment.
Client: RHEL 8.6 with BBR congestion control enabled
Server: RHEL 7.9 using default Cubic congestion ...
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redhat + how to revert TCP BBR congestion changes
We have configured the BBR settings on all our RHEL 8.6 machines as follows: (according to Red Hat's documentation [https://access.redhat.com/solutions/3713681]). The goal is to assess whether the BBR ...
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Why is htop showing a lot of "kernel" activity?
Is it normal to see this much "kernel" activity on a server that is not currently running anything (at least at the user/application layer)?
According to this link the red portion of the ...
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redhat + DELL + Controller reset is requested due to IO timeout
We have a DELL server with iDRAC (Integrated Dell Remote Access Controller). Usually, hardware problems related to controllers, storage, or disks are viewed through iDRAC. However, in our case, we see ...
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block nvme0n1: no uuid available providing old nguid - after disk cloning
On Rocky Linux 9.2 I made a copy of my full SSD with a software in order to replace the SSD, then I put just the new SSD in and booted from it, I seen a startup delay saying:
A start job is running ...
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100% CPU on 4 of 8 cores on Oracle Linux [closed]
I have a desktop computer (Intel i4770) running Oracle Linux 7.9 with kernel 4.1.12-61. I usually keep it off and only turn it on on the rare occasions when I need to test something. A month or so ...
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Linux kernel prroblem with RAID: megaraid_sas 0000:43:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x000e address=0xa518d000 flags=0x0020]
After upgrating Proxmox from 7.2 to 8.2 and Linux kernel from 5.x to 6.8.4-2-pve (Proxmox) I have problems with
kernel module megaraid_sas for AVAGO MegaRAID SAS 9440-8i controller.
Server starts but ...
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Update of kernel on Ubuntu never succeeds
A couple of our servers do not upgrade the kernel when prompted. The following message prompt occurs:
Kernel Upgrade
Kernel Upgrade Restart
After closing and restarting the services, nothing has been ...
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ALIX with OpenWRT keeps restarting
I've got problem with ALIX 2D3 (or 2D13) which keeps restarting. It reboots in different period of time - from 2 to every 20 minutes. What we did is changed DC adapter but it's still looks the same.
...
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How useful is ionice tool with modern linux kernel
Ionice tool is supposed to offer relieve on high I/O load by executing commands only when system is in specified state.
https://www.linux.org/docs/man1/ionice.html states
Linux supports I/O ...
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Debian: revert kernel installation from backports
I was running Bullseye (Debian 11?), tried to install kernel 6.x from the bullseye-backports. I am really not sure how to undo it. The new kernel does not work with the graphics driver and a few more. ...
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