Others – Sys Articles

How do I configure high-availability clusters for databases?

Posted on 2025-10-20Posted in OthersTagged database clustering, etcd high availability best practices, Kubernetes StatefulSets, Pacemaker Corosync, PostgreSQL replication, sysarticles1 Comment

Configuring High-Availability Clusters for Databases: A Step-by-Step Enterprise Guide High-availability (HA) clusters ensure that critical database systems remain accessible even during hardware failures, network interruptions, or planned maintenance. In enterprise environments, HA is essential for meeting SLAs, maintaining business continuity, and preventing costly downtime. This guide details how to design, configure, and maintain a high-availability […]

How do I secure SSH access to Linux servers using key-based authentication?

Posted on 2025-09-23Posted in OthersTagged cybersecurity best practices, Key-Based Authentication, Linux, Server Hardening, SSH Security, sysarticlesNo Comments

Securing SSH access using key-based authentication is an essential practice for enhancing the security of Linux servers. This method is more secure and convenient than password-based authentication. Here’s a step-by-step guide: Step 1: Generate SSH Key Pair On your local machine, open a terminal and generate an SSH key pair: bash ssh-keygen -t rsa -b […]

How do I configure iSCSI multipathing for fault tolerance and performance?

Posted on 2025-09-08Posted in OthersTagged backup storage, backup-performance, Fault Tolerance, iscsi, multipathing, sysarticlesNo Comments

Configuring iSCSI multipathing is essential for fault tolerance and improved performance in your storage environment. Multipathing allows an iSCSI initiator to use multiple network paths to access storage targets, ensuring high availability and load balancing. Below is a step-by-step guide to configure iSCSI multipathing: Prerequisites iSCSI Storage Array: Ensure your storage array supports multipathing. Multiple […]

How do I recover accidentally deleted files on ext4 file systems in Linux?

Posted on 2025-06-01Posted in OthersTagged data recovery tools, disk management, ext4, file recovery, Linux, sysarticlesNo Comments

Recovering accidentally deleted files on an ext4 file system can be challenging because ext4 does not natively provide an undelete feature. When a file is deleted, its metadata is removed, making recovery difficult. However, there are methods and tools you can try depending on the situation. Here’s a step-by-step approach: Immediate Actions After Deletion Stop […]

How do I configure GPU passthrough for virtual machines?

Posted on 2025-05-18Posted in OthersTagged GPU passthrough, hypervisor-hardening, IOMMU, NVIDIA GPUs, servers and virtualization, sysarticlesNo Comments

Configuring GPU passthrough for virtual machines (VMs) allows you to dedicate a physical GPU to a VM, enabling high-performance workloads like AI, machine learning, video rendering, or gaming. Here’s a step-by-step guide to configure GPU passthrough, applicable to popular hypervisors such as VMware ESXi, Proxmox VE, or KVM/QEMU. Prerequisites: Hardware Requirements: A CPU and motherboard […]

How do I troubleshoot slow SCP or SFTP file transfers on Linux servers?

Posted on 2025-04-23Posted in OthersTagged file transfer troubleshooting, Linux, network optimization, SCP, sftp, sysarticlesNo Comments

Troubleshooting slow SCP (Secure Copy Protocol) or SFTP (Secure File Transfer Protocol) file transfers on Linux servers involves identifying bottlenecks and optimizing the system. Here is a systematic approach to diagnose and resolve the issue: 1. Check Network Performance Bandwidth: Verify the available bandwidth between the source and destination servers using tools like iperf or […]