Tag: Troubleshooting
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Grow Storage With LVM Logical Volumes (Linux for Beginners, Part 22)
Fixed partitions are rigid; LVM puts a flexible layer between disks and filesystems so you can grow a full volume onto a new disk with no downtime. PVs, VGs, LVs, and snapshots.
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Backups With rsync and tar, Done Right (Linux for Beginners, Part 21)
Making copies is easy; making copies you can restore from is the skill. rsync and tar, the trailing-slash trap, space-smart snapshots, and why an untested backup is not a backup.
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Troubleshoot Linux the Methodical Way, Not by Guessing (Linux for Beginners, Part 18)
The admins who fix things fast follow a method, not a hunch. Define the problem, check the cheap causes first, read the signal not just the number, and change one thing at a time.
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Basic Security Hardening for a New Linux Server (Linux for Beginners, Part 17)
A fresh server gets brute-forced within minutes. The five changes that stop almost all automated attacks: patch, key-only SSH, a default-deny firewall, fail2ban, and least privilege.
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Bash Scripting From Scratch for Beginners (Linux for Beginners, Part 16)
Turn the commands you repeat every day into a script that runs itself. Shebangs, variables, arguments, loops, and the one line that stops a script from doing real damage.
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Schedule Tasks in Linux With cron and systemd Timers (Linux for Beginners, Part 15)
cron runs the jobs that keep Linux servers going. Learn crontab syntax, the PATH trap that kills jobs silently, and when a systemd timer does it better.
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How to Use vi and vim to Edit Files in Linux (Linux for Beginners, Part 14)
Open, edit, save, and quit files in Linux with vi and vim: the three modes, the vim-tiny arrow key trap, and how to save a file you do not own.
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How Do You Connect to a Remote Linux Server With SSH? (Linux for Beginners, Part 13)
SSH is how you reach every Linux server you will ever manage. Generate a key, copy it to the server, turn off passwords, and fix the errors that bite.
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Linux Networking From the Command Line: ip, ss, and ping (Linux for Beginners, Part 12)
Ping the address and it answers, but the name will not resolve. This is Linux networking from the command line: ip, ss, ping and dig, what each one proves, and how to make the config stick on Debian and RHEL.
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Partition, Format, and Mount a Disk in Linux (Linux for Beginners, Part 11)
A new disk gives you a block device and zero usable storage. Here is the partition, format, mount workflow, plus the fstab option that keeps a missing disk from wrecking your boot.
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Reading Linux Logs With journalctl and the systemd Journal (Linux for Beginners, Part 10)
Read Linux logs the fast way. journalctl by unit, boot, priority and time, the volatile-journal default that silently loses your logs, and how to keep the journal off your disk.
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How Does systemd Start and Manage Linux Services? (Linux for Beginners, Part 9)
systemctl controls every service on a modern Linux box. Learn start versus enable, reading status, safe drop-in overrides, journald logs, and why blame is the wrong tool for a slow boot.
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Architecture & Design
About the Author
Dr Pranay Jha
Dr. Pranay Jha is a Cloud and AI Consultant with 18+ years of experience in hybrid cloud, virtualization, and enterprise infrastructure transformation. He specializes in VMware technologies, multi-cloud strategy, and Generative AI solutions. He holds a PhD in Computer Applications with research focused on Cloud and AI, has published multiple research papers, and has been a VMware vExpert since 2016 and a VMUG Community Leader.
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