Networking

How To Create a Redundant Storage Pool Using GlusterFS on Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

How To Create a Redundant Storage Pool Using GlusterFS on Ubuntu 18.04

GlusterFS is a network-attached storage filesystem that allows you to pool computing or storage resources of multiple machines. In turn, this lets you treat various computers as a single, more powerful unit. In this guide, you will create a redundant clustered storage array. This will provide functionality similar to a mirrored RAID configuration over the network

Read more
Common Problems 118021

Ubuntu 18.04 Printer Not Found on Network

🟡 Medium   ⏱ 5–30 min  Last verified: 29 December 2019 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]

Read more
How to Configure Storage Replica on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure Storage Replica on Windows Server 2016

How to Set Up Windows Server 2016 Storage Replica Storage Replica is a feature introduced in Windows Server 2016 that enables synchronous and asynchronous block-level replication of volumes between servers or clusters. It provides storage-agnostic, hardware-independent replication for disaster recovery, migration, and stretch cluster scenarios. Unlike previous replication technologies, Storage Replica operates at the block […]

Read more
Common Problems 115443

RHEL 7 – Legacy service Command Reports Running but Port Is Closed

🟡 Medium   ⏱ 5–30 min  Last verified: 29 December 2019 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]

Read more
How to Monitor Hyper-V Performance on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Monitor Hyper-V Performance on Windows Server 2012 R2

How to Monitor Hyper-V Performance on Windows Server 2012 R2 Monitoring Hyper-V performance is essential for identifying resource bottlenecks, planning capacity expansions, and ensuring that virtual machines are receiving adequate CPU, memory, storage, and network resources. Windows Server 2012 R2 provides multiple tools for Hyper-V performance monitoring: Performance Monitor with Hyper-V-specific counters, Task Manager, Resource […]

Read more
Common Problems 112512

Windows Server 2019 – SChannel TLS handshake failures after cipher hardening – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 28 December 2019 Affected versions: Windows Server 2019 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]

Read more
How to Set Up Remote Desktop Services Collections on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Set Up Remote Desktop Services Collections on Windows Server 2019

How to Set Up Remote Desktop Services Collections on Windows Server 2019 Remote Desktop Services Collections are logical groupings of RD Session Host servers in Windows Server 2019 that publish a common set of resources — either full session desktops or RemoteApp programs — to a defined group of users. Collections are managed centrally through […]

Read more
How to Set Up Windows Server 2019 as a RADIUS Proxy — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Set Up Windows Server 2019 as a RADIUS Proxy

Introduction to RADIUS Proxy A RADIUS proxy receives authentication requests from RADIUS clients (VPN servers, wireless APs, switches) and forwards them to remote RADIUS servers based on configurable rules. Windows Server 2019 with the Network Policy Server (NPS) role can function as a RADIUS proxy in addition to—or instead of—acting as a full RADIUS server. […]

Read more
How to Configure Network QoS with tc on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Configure Network QoS with tc on RHEL 7

How to Configure Network QoS with tc on RHEL 7 Quality of Service (QoS) is the practice of managing network traffic to ensure that critical applications receive the bandwidth and latency guarantees they need. Linux provides a sophisticated traffic control subsystem accessible through the tc (traffic control) command, part of the iproute2 package. With tc, […]

Read more
How to Sync Time with Chrony on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Sync Time with Chrony on RHEL 7

How to Sync Time with Chrony on RHEL 7 Accurate system time is critical for nearly every networked service on a Linux server. Log correlation, SSL certificate validation, Kerberos authentication, database replication, and distributed systems all depend on clocks that are closely synchronized across machines. Red Hat Enterprise Linux 7 ships with Chrony as the […]

Read more
CHAT