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…
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…
Understanding NFSv4 Identity Mapping in NetApp ONTAP (AUTH_SYS and File Ownership Under the Hood)
NFSv4 introduced significant changes compared with NFSv3, including how file and directory ownership is represented between NFS servers and clients….
Passwordless Authentication in Linux – Part 3 – Certificate-Based and FIDO2 Authentication
After exploring certificate-based authentication and Passkeys on FIDO2 for Windows in Part 1 and Part 2, this third part takes…
Understanding Windows-to-UNIX User Mapping with UNIX Security Style in NetApp ONTAP
When Windows users access data stored on a NetApp ONTAP volume using UNIX security style, ONTAP must translate the Windows…
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Software Defined Networking (SDN) with VMware NSX – Part 5: Using Check Point for Multi-Tenant Routing, NAT, and Overlapping IP Networks
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