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Load balancing distributes incoming network traffic across multiple servers to ensure no single server becomes overwhelmed. This technique enhances application availability, scalability, and reliability. Nginx, a high-performance web server, can also function as an effective software load balancer for applications like those built with Spring B ...

System Preparation and CleanupBefore initiating the installation of Docker Engine, it is crucial to remove any conflicting legacy packages that may exist on the system. This ensures a clean environment for the containerization tools.sudo apt-get remove docker docker-engine docker.io containerd runc sudo apt-get updateInstalling DependenciesInst ...

During a recent security scan of backend components, several minor vulnerabilities were detected. To prevent issues during future deployments, I decided to upgrade the MySQL installation. The upgrade strategy involves replacing MySQL binaries only, upgrading the replica node first, promoting it to the primary, and then upgrading the original pr ...

Ansible is an open-source automation tool that simplifies configuration management, application deployment, and task automation. Key characteristics: 1. Python-based infrastructure automation platform 2. Agentless architecture using SSH protocol 3. Supports multi-node orchestration and parallel execution Environment Setup Host IP Address ...

Checking Docker Information # Display Docker version docker version # Show detailed Docker system information docker info # Get help with Docker commands docker --help Image Operations Image operations can utilize image names, full IDs, or shortened IDs. Listing Images # Show local images docker images # Include intermediate layers docker i ...

Virtualization Concepts Virtualization is a resource management technology that abstracts physical computing hardware—such as servers, memory, network, and storage—into logical resources. By decoupling the software environment from the underlying physical infrastructure, users can achieve greater efficiency and flexibility. In production enviro ...

Download and extract SonarQube 9.9.4 LTS Community Edition: cd /opt sudo wget https://binaries.sonarsource.com/Distribution/sonarqube/sonarqube-9.9.4.87374.zip sudo unzip sonarqube-9.9.4.87374.zip Create a dedicated system user and assign ownership: sudo useradd --system --home-dir /opt/sonarqube-9.9.4.87374 --shell /sbin/nologin --comment &qu ...

In Docker, network communication between a container and the host system is managed through port mapping. This allows external traffic to reach specific services running inside a containerized environment.\n\n### Port Mapping Fundamentals\nThe primary way to map ports is during the execution of a container using the -p (or --publish) flag. This ...

Continuous Integration and Continuous Deployment Continuous Integration (CI) is a software development practice where team members frequently integrate their work. Typically, each member integrates code at least once daily, which can result in multiple integrations per day. Each integration is verified through an automated build process that i ...

Deploying GitLab To set up a GitLab instance with persistent storage, first create the necessary directory structure on the host machine to hold configuration, logs, and data. sudo mkdir -p /srv/gitlab/config sudo mkdir -p /srv/gitlab/logs sudo mkdir -p /srv/gitlab/data Launch the GitLab container using the official Community Edition image, ...