--- title: "#administration articles | Hashnode" description: "Explore 57 articles tagged #administration on Hashnode. Tutorials, guides, and how-tos from the community." url: "https://hashnode.com/tag/administration" --- Tag # #administration 57 posts · 14 followers [Konstantin Petrov](https://hashnode.com/@sdelka) · [Apr 14](https://hashnode.com/posts/linux-namespaces/69de8a0291716f3cfb6a0797) ### [LINUX NAMESPACES](https://inftip.hashnode.dev/linux-namespaces?utm_source=hashnode&utm_medium=feed) 🔧 Part 1: Foundations (PID & NET Namespaces) 🔢 PID Namespace — Process Isolation Isolates the process tree. Each namespace has its own process numbering starting from PID=1. unshare --pid --fork --m 3 min read · [inftip.hashnode.dev](https://inftip.hashnode.dev/linux-namespaces?utm_source=hashnode&utm_medium=feed) [Sumit Prasad](https://hashnode.com/@sprasad035) · [Mar 10](https://hashnode.com/posts/enable-https-in-jenkins-using-java-keystore-jks/69afcda2af06a097c306cd2a) ### [Enable HTTPS in Jenkins Using Java Keystore (JKS)](https://technotesbysumit.hashnode.dev/enable-https-in-jenkins-using-java-keystore-jks?utm_source=hashnode&utm_medium=feed) SSL directly in Jenkins using a Java Keystore (JKS) on Red Hat Linux, without Nginx or Apache. Below is the exact, production‑safe configuration for J 3 min read · [technotesbysumit.hashnode.dev](https://technotesbysumit.hashnode.dev/enable-https-in-jenkins-using-java-keystore-jks?utm_source=hashnode&utm_medium=feed) [Amrit Poudel](https://hashnode.com/@ambroligence) · [Feb 16](https://hashnode.com/posts/postgresql-production-incident-understanding-a-disk-io-meltdown-after-a-holiday-backlog/6992cf188a4784bb34f2b15e) ### [🧯 PostgreSQL Production Incident: Understanding a Disk I/O Meltdown After a Holiday Backlog](https://systemtroubleshoot.hashnode.dev/postgresql-production-incident-understanding-a-disk-io-meltdown-after-a-holiday-backlog?utm_source=hashnode&utm_medium=feed) This article documents a real-world PostgreSQL production incident.All business names, schemas, queries, IPs, and identifiers have been anonymized for confidentiality. 📌 System Overview OS: Ubuntu Server 24.04 LTS Database: PostgreSQL 16.x CPU:... 6 min read · [systemtroubleshoot.hashnode.dev](https://systemtroubleshoot.hashnode.dev/postgresql-production-incident-understanding-a-disk-io-meltdown-after-a-holiday-backlog?utm_source=hashnode&utm_medium=feed) [Abdul Ghafoor](https://hashnode.com/@ghafoor4321) · [Feb 15](https://hashnode.com/posts/today-i-learned-some-seriously-practical-linux-admin-skills/699203661a71a369d6d27731) ### [Today I learned some seriously practical Linux admin skills](https://ghafoor4321.hashnode.dev/today-i-learned-some-seriously-practical-linux-admin-skills?utm_source=hashnode&utm_medium=feed) Today, I completed the Source Code Installation module and walked through the full process of building and installing from source with more confidence. 1 min read · [ghafoor4321.hashnode.dev](https://ghafoor4321.hashnode.dev/today-i-learned-some-seriously-practical-linux-admin-skills?utm_source=hashnode&utm_medium=feed) [Tech Insights Hub](https://hashnode.com/@JohnMikes) · [Feb 12](https://hashnode.com/posts/server-management-linux-administration/698e57e2c348d783f6b94f73) ### [Server Management: Linux Administration](https://topperblog.hashnode.dev/server-management-linux-administration?utm_source=hashnode&utm_medium=feed) Linux Server Administration Guide for Modern DevOps Teams Linux server administration remains the foundational skill for managing production infrastructure in 2025, yet the discipline has evolved dramatically from traditional approaches. Modern teams... 10 min read · [topperblog.hashnode.dev](https://topperblog.hashnode.dev/server-management-linux-administration?utm_source=hashnode&utm_medium=feed) [Vishal Mathur](https://hashnode.com/@vishalmathur) · [Nov 13, 2025](https://hashnode.com/posts/pingtool-43-the-ultimate-free-network-monitoring-tool-every-windows-user-must-have/691589f71e046e9c7f8b84ec) ### [PingTool 4.3: The Ultimate Free Network Monitoring Tool Every Windows User Must Have](https://vishalmathur.in/pingtool-43-the-ultimate-free-network-monitoring-tool-every-windows-user-must-have?utm_source=hashnode&utm_medium=feed) PingTool 4.3: Free, portable Windows utility for real-time device monitoring, TCP-port checks, and speed tests 7 min read · [vishalmathur.in](https://vishalmathur.in/pingtool-43-the-ultimate-free-network-monitoring-tool-every-windows-user-must-have?utm_source=hashnode&utm_medium=feed) [Henry](https://hashnode.com/@henrypen) · [Sep 23, 2025](https://hashnode.com/posts/cfpb-ends-monitoring-of-apple-us-bank-years-ahead-of-schedule/68d2374a4210ce5a676e81c4) ### [CFPB ends monitoring of Apple, U.S. Bank years ahead of schedule](https://uk-techwire.hashnode.dev/cfpb-ends-monitoring-of-apple-us-bank-years-ahead-of-schedule?utm_source=hashnode&utm_medium=feed) CFPB halts monitoring of Apple and U.S. Bank years early, marking a major shift in regulatory oversight. 2 min read · [uk-techwire.hashnode.dev](https://uk-techwire.hashnode.dev/cfpb-ends-monitoring-of-apple-us-bank-years-ahead-of-schedule?utm_source=hashnode&utm_medium=feed) [Joe Wilson](https://hashnode.com/@joewilson01) · [Aug 25, 2025](https://hashnode.com/posts/encompass-system-administration-services-the-backbone-of-modern-mortgage-operations/68ac891aae35283ccf04bd50) ### [Encompass® System Administration Services: The Backbone of Modern Mortgage Operations](https://encompass-system-administration.hashnode.dev/encompass-system-administration-services-the-backbone-of-modern-mortgage-operations?utm_source=hashnode&utm_medium=feed) Introduction: Why System Administration Matters More Than Ever In today’s mortgage landscape, speed, compliance, and accuracy define success. Lenders across the United States are constantly under pressure to process loans faster, reduce errors, and e... 5 min read · [encompass-system-administration.hashnode.dev](https://encompass-system-administration.hashnode.dev/encompass-system-administration-services-the-backbone-of-modern-mortgage-operations?utm_source=hashnode&utm_medium=feed) [LINGALA KONDAREDDY](https://hashnode.com/@lingalakondareddy) · [Jul 7, 2025](https://hashnode.com/posts/sc-400-mastering-information-protection-and-governance-2025-edition/686b5b6400920421321c9c27) ### [✅ SC-400: Mastering Information Protection and Governance (2025 Edition)](https://kondareddilkr.hashnode.dev/sc-400-mastering-information-protection-and-governance-2025-edition?utm_source=hashnode&utm_medium=feed) Master data protection and governance skills with SC-400 certification, learning to secure Microsoft 365 and Azure environments efficiently 2 min read · [kondareddilkr.hashnode.dev](https://kondareddilkr.hashnode.dev/sc-400-mastering-information-protection-and-governance-2025-edition?utm_source=hashnode&utm_medium=feed) [Mansi Kapoor](https://hashnode.com/@mansikapoor819) · [May 7, 2025](https://hashnode.com/posts/the-enigmatic-kimpurusha-kingdom-tracing-the-lineage-of-a-mythical-tribe/681af745ebde626c4ccd80f2) ### [The Enigmatic Kimpurusha Kingdom: Tracing the Lineage of a Mythical Tribe](https://mansikapoor819.hashnode.dev/the-enigmatic-kimpurusha-kingdom-tracing-the-lineage-of-a-mythical-tribe?utm_source=hashnode&utm_medium=feed) The ancient history of India is steeped in mythology and folklore, often blurring the lines between historical fact and embellished narrative. Among the myriad tribes and kingdoms mentioned in the Puranas, the Kimpurusha Kingdom stands out as particu... 5 min read · [mansikapoor819.hashnode.dev](https://mansikapoor819.hashnode.dev/the-enigmatic-kimpurusha-kingdom-tracing-the-lineage-of-a-mythical-tribe?utm_source=hashnode&utm_medium=feed)