Docker has transformed modern application deployment by enabling developers and system administrators to package applications and their dependencies into lightweight, portable containers. This approach improves consistency across environments, simplifies deployments, and enhances scalability. However, Docker containers can still encounter issues such as startup failures, performance bottlenecks, networking problems, unexpected crashes, and resource constraints. When these issues occur, having a structured troubleshooting approach can significantly reduce downtime and accelerate resolution. In this guide, we’ll explore practical Docker container troubleshooting techniques, useful commands, and best practices that can help you identify and resolve container-related problems efficiently. Understanding Docker Containers A Docker container is an isolated process that runs with its own filesystem, network stack, and resource limits. Containers provide application isolation while …
Troubleshooting
How to Troubleshoot Intermittent Timeouts Between AWS ALB and EC2 Instances
Intermittent timeouts between an AWS Application Load Balancer (ALB) and EC2 instances can be among the most frustrating infrastructure issues to diagnose. Unlike complete outages, these problems occur sporadically, making them difficult to reproduce and often difficult to detect through standard monitoring alerts. In most cases, the ALB can successfully reach the target EC2 instance, but the instance either responds too slowly or fails to complete the connection within the expected timeframe. This results in occasional request failures, degraded application performance, and a poor user experience. In this guide, we’ll explore the most common causes of ALB-to-EC2 timeouts and provide a step-by-step troubleshooting framework to help identify and resolve the issue. Understanding ALB and EC2 Timeout Issues AWS Application Load …
How to Troubleshoot Production Server Crashes: A Practical Incident Response Framework
Production incidents rarely happen at convenient times. Whether it’s a sudden server crash, an unexpected CPU spike, a memory leak, or a system-wide outage, the pressure to restore services quickly can be overwhelming. During these critical moments, having a structured troubleshooting process is often the difference between a fast recovery and a prolonged outage. The most successful operations teams don’t rely on guesswork during incidents. Instead, they follow a systematic incident response framework that helps them stabilize services, identify root causes, and restore normal operations with minimal disruption. In this guide, we’ll walk through a practical, step-by-step framework for debugging production servers under pressure and handling common infrastructure failures effectively. Why a Structured Incident Response Process Matters When systems fail, …
Why the LiteSpeed Plugin Gets Removed During cPanel Nightly Updates And How to Fix It
LiteSpeed Web Server is widely used by hosting providers and server administrators for its high-performance web serving capabilities, advanced caching features, and seamless integration with cPanel/WHM. However, some administrators have recently reported an issue where the LiteSpeed WHM plugin disappears after a nightly cPanel update. At first glance, the automatic removal of the LiteSpeed plugin can be alarming, especially for production hosting environments. Fortunately, in most cases, the issue is related to compatibility and security validation checks rather than a problem with the LiteSpeed Web Server itself. In this guide, we’ll explain why the LiteSpeed plugin gets removed during cPanel updates, how to identify the root cause, and the best practices to prevent future occurrences. Understanding the Issue cPanel performs …
How to Troubleshoot Full Backup Failures Due to “Process Timeout” in RunCloud ?
Backups are essential for protecting your websites, applications, and server data. While RunCloud offers a reliable backup system, users may occasionally encounter backup failures that prevent snapshots from being created successfully. One of the most common backup issues is the following error: Full backup snapshot has been failed. Error: process timeout This error typically indicates that the backup process took longer than expected and was terminated before completion. In most cases, the issue is related to server connectivity problems, firewall restrictions, or communication failures between your server and the RunCloud agent. This guide explains how to troubleshoot and fix the RunCloud backup failed error caused by a process timeout. What Does the RunCloud Process Timeout Error Mean? The “process timeout” …
Deployment of cloud infrastructure necessitates automation, consistency, and reliability. It is possible to automate, deploy, and consistently manage cloud infrastructure with AWS CloudFormation through Infrastructure as Code (IaC). With the ability to deploy cloud infrastructure automatically, it is easier to avoid mistakes related to manual deployment. Nonetheless, troubleshooting CloudFormation stacks becomes difficult with an increase in cloud environments’ complexity. Syntax issues, configuration issues, dependency issues, and service limit restrictions can lead to difficulties in deployment and troubleshooting of the stacks created. Therefore, it is important to be familiar with Best Practices for AWS CloudFormation Troubleshooting to be able to identify issues quickly and solve them effectively. AWS CloudFormation AWS CloudFormation is a platform offered by Amazon Web Services that lets …
2026 hasn’t been kind to cPanel environments so far. A few serious vulnerabilities have already forced hosting providers to patch quickly, and in some cases, restrict access to WHM entirely until fixes were applied. Since cPanel & WHM is used on a massive number of shared hosting servers, even a single exploit ends up being a widespread problem pretty fast. CVE-2026-41940 — the one everyone kept talking about The main issue that stood out this year was CVE-2026-41940. It’s an authentication bypass in cPanel & WHM. In simple terms, it meant attackers could potentially reach cPanel or WHM without having valid login credentials in some cases. That alone is enough to make it critical, especially because WHM gives full server-level …
The internet depends heavily on web servers and reverse proxies to deliver websites, APIs, and cloud applications securely and efficiently. One of the most widely used technologies in this space is NGINX, trusted by enterprises, startups, cloud providers, and DevOps teams worldwide. In May 2026, cybersecurity researchers disclosed a critical vulnerability named NGINX Rift, tracked as CVE-2026-42945. What makes this discovery especially alarming is that the flaw reportedly remained hidden inside the NGINX codebase for nearly 18 years before being identified. The vulnerability affects the ngx_http_rewrite_module and can potentially allow attackers to crash services or execute malicious code remotely under specific conditions. Because NGINX powers a significant portion of internet-facing infrastructure, the vulnerability immediately attracted attention from security teams, cloud …
XML-RPC in WordPress: What It Is, Security Risks, and How to Disable It Safely
xmlrpc.php is a core WordPress file that enables remote communication with your website through the XML-RPC protocol. It allows external applications and services to interact with your site without needing direct access to the WordPress dashboard. In earlier versions of WordPress, XML-RPC was disabled by default. However, starting from version 3.5, it has been enabled by default to support features like integration with the WordPress mobile app, allowing it to communicate seamlessly with WordPress installations. What xmlrpc.php Does Originally introduced to support remote publishing, it allows: Security Risks of xmlrpc.php While useful, it’s also a common attack vector: 1. Brute Force Attacks Hackers use xmlrpc.php to bypass security measures. The file enables attackers to try hundreds of password combinations with …
How to Restore Your WordPress Site After a Sensei LMS Installation ?
Installing a new plugin should enhance your WordPress website, not disrupt it. However, after installing the Sensei LMS, many website owners notice unexpected changes such as a switched theme, missing homepage content, or altered site layouts. These issues usually occur because large learning management plugins introduce their own templates and configuration settings during setup. If your website suddenly looks different or important content seems to have disappeared, don’t worry. In most cases, your data is still safe and can be restored with the right steps. This guide explains why these changes happen, how to restore your original website design and content, and what precautions you can take to avoid similar problems in future plugin installations. Understanding the Issue When installing …