This article presents seven practical Bash shell scripts for Linux system administration, covering automatic file backup, disk usage alerts, old log cleanup, server reachability checks, DNS resolution monitoring, HTTP service health checks, and random password generation, each with explanations and code examples.
This guide explains how to keep your Git log tidy by using git commit --amend to modify the latest commit, interactive rebase to squash or fixup multiple commits, and pull with --rebase to maintain a linear history before merging feature branches.
This article provides an in‑depth technical analysis of Kafka’s storage architecture, covering its design goals, storage mechanisms, log segment layout, sparse indexing, log cleanup policies, and the performance techniques such as sequential writes, page cache, and zero‑copy that enable high‑throughput streaming.
This article explains how to identify the cause of a full disk on a Linux server by using df and du commands, discovers that oversized Logstash container logs are the culprit, and presents three practical solutions—including manual cleanup, a periodic script, and Docker log size limits—to reclaim space.
This article explains the complete Kafka topic deletion workflow, from the client’s deleteTopics request through Zookeeper node creation, controller coordination, broker StopReplica handling, log renaming, delayed file removal, and final cleanup, while providing code excerpts and practical Q&A for common pitfalls.
This article explains the role of MySQL binary logs for replication and point‑in‑time recovery, outlines four practical cleanup techniques—including reset master and purge commands—and demonstrates how to switch logs using flush operations while showing relevant command outputs and screenshots.
