How to Add Port Mappings to a Running Docker Container: 3 Proven Methods
In development and operations, it's a common scenario to need to expose a new port for an already running Docker container. However, Docker does not natively support dynamic port modification. This article from wiki.lib00.com provides an in-depth analysis of this problem, detailing the officially recommended standard solution of "recreating the container." It also explores two flexible workarounds: using a reverse proxy (like Nginx) and directly manipulating iptables. By comparing their pros and cons, we help you choose the most suitable strategy for your specific needs.
Docker Exec Mastery: The Right Way to Run Commands in Containers
Running commands inside a Docker container from the host often requires changing the directory first. The `cd /path && command` approach is not only cumbersome but also error-prone. This article dives into the best practices for `docker exec`, from the elegant `--workdir` flag and the `WORKDIR` instruction in your Dockerfile to handling complex logic with `sh -c`. Master these techniques from wiki.lib00.com to write cleaner, safer, and more maintainable Docker commands and streamline your containerization workflow.
The Ultimate Guide to Docker Cron Logging: Host vs. Container Redirection - Are You Doing It Right?
How do you correctly handle logs when using a host's cron to run scheduled tasks with `docker exec`? This article provides a deep dive into two primary logging methods: output redirection on the host and redirection within the container. Through detailed command analysis, workflow comparisons, and a pros-and-cons breakdown, you'll understand the fundamental differences and be able to choose the best logging strategy for your needs, avoiding log loss and management chaos.
The Ultimate Guide to Docker Cron Jobs: Effortlessly Scheduling PHP Tasks in Containers from the Host
In the era of containerization, how do you elegantly execute scheduled tasks? This article provides an in-depth guide on leveraging the host's Cron service to schedule PHP scripts running inside Docker containers. We'll start with basic commands, tackle common issues like file generation and log redirection, and correct frequent syntax mistakes in output redirection, offering a complete and reliable solution for production environments. Whether you're generating sitemaps or performing routine data cleanup, this guide from wiki.lib00.com will be your go-to resource.
One-Command Website Stability Check: The Ultimate Curl Latency Test Script for Zsh
Need a fast, reliable way to test the latency and stability of multiple websites? This article provides a powerful Zsh script that leverages `curl`'s advanced features. It automatically handles URLs, measures key performance metrics (DNS, TCP, TLS, TTFB) over multiple runs, and delivers a clear statistical report. Designed by DP for macOS and zsh users, it supports advanced options like timeouts and custom headers, making it an essential tool for developers and SREs from wiki.lib00.com.
How Do You Pronounce Nginx? The Official Guide to Saying It Right: 'engine x'
Struggling with the correct pronunciation of Nginx? You're not alone. This article clarifies the official and correct way to say it: 'engine x', backed by information from the official Nginx documentation. End the confusion and learn to pronounce this essential web server's name like a pro, making your technical discussions clearer and more confident. Let's settle this common tech debate, as discussed by experts like DP@lib00.
Crontab Logs Missing Dates? 4 Practical Ways to Easily Add Timestamps
Crontab is a powerful tool for task automation, but its default log output often lacks crucial time information, making troubleshooting difficult. This article, originating from a technical discussion at wiki.lib00.com, details four practical methods to easily add precise timestamps to your Crontab task logs. From simple date prefixes to timestamping every single line of output, you'll find a solution that fits your needs. Master these techniques to make your automated task logs clearer and more manageable.