Linux6 min read
How to Check SSD Health in Linux
Check SATA and NVMe SSD health on a Linux server with smartctl, nvme-cli and mdadm: wear, temperature, media errors, kernel messages and RAID status.
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Debian
Guides and troubleshooting notes from the Debian archive.
8 guides
Linux6 min read
How to Replace a Failed Disk in Linux Software RAID1 (mdadm)
Step-by-step: find the failed disk in an mdadm RAID1 mirror, copy the partition table to the new disk, rebuild the array and reinstall GRUB.
CentovaCast3 min read
How to Install Icecast-KH on a Centova Cast Server
Build the latest Icecast-KH (kh22) from source on Debian or Ubuntu and switch Centova Cast v3 to it with one command. Includes how to check and roll back.
Linux3 min read
How to Install Webmin on Debian, Ubuntu and AlmaLinux
Install Webmin with its official repository script on Debian, Ubuntu, AlmaLinux or Rocky Linux, open port 10000, log in, and fix the NO_PUBKEY update error.
Linux4 min read
How to Change the SSH Port on Linux Without Locking Yourself Out
Change the SSH port on AlmaLinux, Rocky Linux, Debian or Ubuntu in a safe order: open the firewall and SELinux first, restart SSH, and test before logging out.
Linux3 min read
How to Fix “ACPI Error: SMBus/IPMI/GenericSerialBus write requires Buffer of length 66”
Kernel log flooded with ACPI AE_AML_BUFFER_LIMIT errors from _PMM on HP servers? It's the acpi_power_meter driver. Unload it and blacklist it to stop the noise.
Linux4 min read
How to Change the Hostname on Linux and cPanel Servers
Change a server's hostname with hostnamectl on AlmaLinux, Debian or Ubuntu, or with WHM's Change Hostname or set_hostname on cPanel, and make it stick on cloud VPSs.
Linux3 min read
How to Clean Up a Full /boot Partition on Linux
/boot at 100% and updates failing? Remove old kernels safely with dnf on AlmaLinux and CloudLinux, or apt on Ubuntu, and stop it from filling up again.