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Selected Java Interview Questions
Selected Java Interview Questions
May 30, 2025 · Operations

Batch Installation of Node Exporter on Linux Hosts Using Ansible, JumpServer, and a Static File Server

This guide explains three practical methods for deploying the Prometheus node_exporter collector across large numbers of Linux servers—using a JumpServer with Ansible, a standalone Ansible playbook, or a custom Bash script combined with an internal static file server—complete with configuration, service setup, and integration into Consul and vmagent monitoring.

AnsibleConsulNode Exporter
0 likes · 10 min read
Batch Installation of Node Exporter on Linux Hosts Using Ansible, JumpServer, and a Static File Server
Efficient Ops
Efficient Ops
Sep 17, 2024 · Operations

Master Linux Performance: CPU, Memory, IO, and Flame Graphs for Nginx Troubleshooting

This guide explains how to diagnose Linux performance bottlenecks—CPU, memory, disk I/O, network, and system load—using tools such as top, vmstat, perf, and flame graphs, and demonstrates a real‑world Nginx case study to pinpoint high‑CPU JSON parsing and upstream latency issues.

CPU ProfilingFlame GraphsPerformance analysis
0 likes · 20 min read
Master Linux Performance: CPU, Memory, IO, and Flame Graphs for Nginx Troubleshooting
Code Ape Tech Column
Code Ape Tech Column
Feb 16, 2024 · Operations

Building a Linux Host Monitoring System with Prometheus, Grafana, and Node Exporter

This guide walks through installing and configuring Prometheus, Grafana, and Node Exporter on a Linux server using Docker, shows how to set up monitoring dashboards, customize PromQL queries, and verify the monitoring system, providing complete steps and code snippets for a functional host monitoring solution.

DockerGrafanaNode Exporter
0 likes · 9 min read
Building a Linux Host Monitoring System with Prometheus, Grafana, and Node Exporter
Aikesheng Open Source Community
Aikesheng Open Source Community
May 25, 2022 · Operations

Diagnosing High CPU Load Caused by Frequent Short‑Lived Processes in a MongoDB Environment Using execsnoop

The article describes how a MongoDB test environment on a single VM experienced persistent high CPU load despite low visible QPS, how the root cause was traced to thousands of short‑lived processes spawned by Zabbix monitoring, and how execsnoop was used to identify and eliminate the offending processes.

CPU LoadMongoDBZabbix
0 likes · 6 min read
Diagnosing High CPU Load Caused by Frequent Short‑Lived Processes in a MongoDB Environment Using execsnoop
FunTester
FunTester
Jul 15, 2019 · Operations

Installing and Localizing Netdata: A Real‑Time Linux Performance Monitoring Tool

This article explains how to install Netdata, a web‑based real‑time Linux performance monitoring tool, and provides a step‑by‑step guide to applying a Chinese localization script, including required dependencies, installation commands, and an overview of its key monitoring capabilities.

InstallationNetdatalinux monitoring
0 likes · 5 min read
Installing and Localizing Netdata: A Real‑Time Linux Performance Monitoring Tool
FunTester
FunTester
Jul 12, 2019 · Operations

Installing and Localizing Netdata: A Real‑Time Linux Performance Monitoring Tool

This guide explains how to install Netdata, a fast web‑based Linux performance monitor, and apply a Chinese localization by using a forked repository, running the provided installer script, and configuring the service to view detailed system metrics through a clean UI.

InstallationNetdatalinux monitoring
0 likes · 6 min read
Installing and Localizing Netdata: A Real‑Time Linux Performance Monitoring Tool
Hujiang Technology
Hujiang Technology
Dec 1, 2017 · Operations

Practical Guide to Performance Testing and Troubleshooting in Linux Environments

This article outlines a comprehensive, step‑by‑step approach to performance testing and root‑cause analysis for backend services, covering environment validation, tool selection, Linux system limits, dependency checks, empty‑endpoint verification, throughput calculation, log monitoring, and essential Linux commands such as netstat, vmstat, mpstat, iostat, top and free.

JMeterbackend optimizationlinux monitoring
0 likes · 20 min read
Practical Guide to Performance Testing and Troubleshooting in Linux Environments
Efficient Ops
Efficient Ops
Jul 30, 2017 · Operations

Master Linux System Monitoring with Sysdig: Installation, Chisels, and Real‑World Use Cases

This tutorial introduces Sysdig, an open‑source Linux monitoring tool that combines strace, tcpdump, and lsof, shows how to install it, explore its built‑in chisels, and apply practical examples for performance troubleshooting, user activity, file I/O, and network traffic analysis.

Performance analysisSystem Tracingchisel scripts
0 likes · 9 min read
Master Linux System Monitoring with Sysdig: Installation, Chisels, and Real‑World Use Cases
Efficient Ops
Efficient Ops
Jan 4, 2017 · Information Security

How Deep Defense and Log Analysis Can Thwart Intrusions

This article explains Google’s BeyondCorp concept, the need for deep defense of internal and perimeter networks, and provides practical Linux scripts for monitoring processes, ports, command usage, system events, file changes, and SFTP activity to detect and mitigate host intrusions.

Log Analysisdeep defensehost intrusion detection
0 likes · 10 min read
How Deep Defense and Log Analysis Can Thwart Intrusions
360 Zhihui Cloud Developer
360 Zhihui Cloud Developer
Oct 21, 2016 · Operations

Master Linux Performance Monitoring with sar: A Step‑by‑Step Guide

This article introduces the Linux sar command, explains its syntax and common options, and demonstrates how to sample and interpret CPU, memory, I/O, process queue, and swap metrics to identify system bottlenecks during performance testing.

CPUI/Olinux monitoring
0 likes · 10 min read
Master Linux Performance Monitoring with sar: A Step‑by‑Step Guide