Linux
- Attach a physical disk to a QEMU VM
- RHCSA: Pass!
- Managing password aging with /etc/login.defs, passwd, and chage
- Determining which filesystems are present on mounted or unmounted volumes
- Setting default file permissions with umask
- NTP - chrony and timedatectl
- Archival/compression utilities on Linux
- Working with SELinux (RHCSA-level)
- Working with journald
- Links and inodes!
- RHCSA/EL10 - bootloader, initramfs, kernel arguments, resetting the root password, oh my
- Linux md RAID benchmarks on 4 Kioxia PM5s
- Linux md RAID layouts
- Creating a cloud-init VM template for AlmaLinux 10 on Proxmox VE
- Regenerating HTTP certs in an Elasticsearch cluster
- Performing a partial or full restore of an Elasticsearch cluster from a snapshot
- Building out a test 3-node Elasticsearch 9 cluster on AlmaLinux 9
- Migrating Libvirt VMs to Proxmox VE by importing qcow2 disks to Ceph
- PVE/Ceph hyperconverged cluster build/Ceph performance tuning
- Failing to build a Proxmox + LINSTOR (DRBD) HCI cluster (ft. RDMA and ewaste!)
- PowerShell Core (Microsoft Graph and Az) in a toolbox container on your Linux box
- Setting up Cockpit with Certbot and a private CA with an ACME endpoint
- Building out a signing certificate authority that supports ACME with step-ca and an OpenSSL root
- Using OpenSSL to generate a root certificate (using OpenSSL on a Linux server as a root certificate authority)
- Installing Wiki.js (PostgreSQL, NGINX) on AlmaLinux 10
- Changing a Linux username
- Performing an in-place upgrade from Alma 9 to Alma 10 with LEAPP and ELevate
- Updating the osinfo database on a Linux hypervisor
- SSH agent forwarding
- Listing and removing RPM GPG (PGP) keys
- Configuring LACP bonds & VLAN bridges with nmcli
- Installing Ninja Remote (NinjaRMM remote session utility) on Linux with Wine
- Looking at filesystem types on disks from Linux
- The setuid, setgid, and sticky special file permissions bits
- Snippet: unlock a SSH key for use with Ansible
- Snippet: Disable max vCPUs eq phys. threads restriction in Proxmox VE 8.3