We share professional insights on cloud-native, DevOps & operations, Kubernetes, observability & monitoring, and Linux systems.
This article introduces six indispensable tools—kubectl, Helm, Prometheus + Grafana, Istio, Velero, and K9s—that simplify Kubernetes cluster management by covering resource handling, monitoring, networking, security, backup, and interactive UI, helping readers efficiently operate production‑grade clusters.
This article compares traditional Operations (Ops), DevOps, and Site Reliability Engineering (SRE) by outlining their definitions, core responsibilities, typical technology stacks, and career considerations, helping readers understand the distinct philosophies and choose the path that best fits their interests and market demand.
This article compiles practical advice from experienced operations engineers on the challenges and strategies for achieving a 300,000 CNY yearly salary, covering skill development, career moves, company size, automation, and the evolving role of SRE/DevOps.
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 article compares Prometheus and Zabbix across architecture design, data collection methods, storage engines, scalability, deployment complexity, alerting mechanisms, and suitable scenarios, helping operations teams choose the most appropriate monitoring solution for cloud‑native or traditional enterprise environments.
This article explains why Kubernetes certificates often become hidden "time bombs," describes the typical failures caused by expired certificates, and provides practical methods to detect upcoming expirations and safely renew or replace them to keep clusters running smoothly.
This article introduces Promtool, the multifunctional command‑line utility bundled with Prometheus, and explains how to validate configurations, check and test rules, query metrics, manage the TSDB, run unit tests, use debugging helpers, install the tool, and apply best‑practice recommendations.
This article explains what network attacks are, outlines the most common attack types such as malware, DoS/DDoS, phishing, SQL injection and DNS tunneling, and provides practical prevention measures including regular updates, firewall configuration, VPN use, and security awareness training.
This article explains why SCP cannot resume interrupted transfers and provides practical alternatives—including rsync with the --partial option, splitting files with the split command, and keeping sessions alive with tmux—to achieve reliable, resumable file transfers on Linux systems.
The article compiles various Zhihu users' perspectives on how operations engineers can navigate career transitions after age 35, emphasizing the importance of aligning with larger companies, developing technical or managerial expertise, leveraging specialized infrastructure knowledge, and considering alternative paths such as product, project, or data roles.
