Troubleshooting a WordPress .htaccess File That Keeps Getting Overwritten Using Linux Auditd
While troubleshooting my WordPress installation running on Ubuntu and Apache, I encountered a rather annoying issue: the .htaccess file in…
How to Keep Linux Commands Running after Disconnecting from SSH using GNU Screen
When working with Linux servers over SSH, you may need to execute commands or scripts that take several minutes or…
Azure VM Offline Recovery Using an Azure Repair VM
If an Azure VM no longer boots sufficiently to access it through SSH or the Azure Serial Console, the OS…
Extending and Recovering a Full Root Filesystem on an Azure Ubuntu VM
In this article, we will explore how to extend the root filesystem of an Ubuntu VM in Microsoft Azure, starting…
Understanding SMB and NFS Behavior During NetApp ONTAP HA Takeovers – TCP, UDP, Sessions, and File Locks
During a NetApp ONTAP high-availability (HA) takeover, storage services are transferred to the surviving node, but what happens to existing…
Mastering tcpdump in SUSE Linux Enterprise
tcpdump is a powerful command-line packet analyzer available on SUSE Linux Enterprise and many other Linux distributions. It allows you…
Windows Server Software Defined Networking (SDN) and Hyper-V Network Virtualization (HNV) – Part 5: Extending Overlapping Tenant Networks with VRFs
In the previous parts, we demonstrated how Hyper-V Network Virtualization (HNV) allows multiple tenants to use overlapping IP address spaces…
Troubleshooting a Btrfs Root Filesystem Forced Read-Only by ENOSPC During a Balance Operation
In this article, we will troubleshoot a Btrfs root filesystem that suddenly became read-only, even though df still reported several…
Understanding and Setting Up NFSv4 Kerberos Authentication in NetApp ONTAP
In previous articles, we explored how NFSv4 identity mapping works in NetApp ONTAP and how Microsoft Active Directory can be…
Using Active Directory as a Central UNIX Identity Store for NFS with NetApp ONTAP and Linux
In traditional NFS environments, consistent UNIX user and group identities must be available across NFS servers and clients. While these…
