Learn step‑by‑step how to download a CentOS base image, create a Dockerfile that installs and configures OpenSSH, build a new SSH‑enabled image, run the container with port mapping, and verify connectivity via an SSH client, turning a closed container into a remote‑accessible environment.
At QCon London, GDS architect Michael Brunton‑Spall explained how DevOps principles underpin successful microservice operations, covering service identification, initial creation, ownership, essential tooling, monitoring depth, failure handling, and practical deployment practices for scaling from a single service to a full ecosystem.
This article summarizes a guest speaker’s deep dive into Docker’s core technologies, ecosystem, emerging trends, and market impact, highlighting how container isolation reshapes traditional operations, the challenges of adoption, and practical guidance for integrating Docker into production environments.
This guide explains what Tmux is, how to install it on macOS and Ubuntu, configure its prefix, integrate it with Vim, use panes, windows and sessions efficiently, and enhance the experience with tools like Tmuxinator and custom status‑bar themes.
This guide introduces essential Docker commands—from pulling images and managing containers to inspecting and removing them—providing clear examples and best practices for safely operating Docker on any system, including host file configuration, interactive sessions, background execution, and cleanup procedures.
This guide explains how to use the GNU Screen terminal with Zmodem's rz and sz commands to manually transfer files from a local Linux environment to a remote test machine through a jump host that only allows SSH access.
This article details how Dianping’s sub‑40‑person operations team structures its groups, designs a dual‑datacenter architecture, and creates comprehensive monitoring, automation, configuration, and analysis systems—including Zabbix, Cat, workflow, Button, and a custom radar platform—to achieve high‑availability, self‑service, and continuous improvement.
This article examines how the rise of diverse technology stacks creates operational bottlenecks and explains why Docker’s container approach offers a flexible, distribution‑agnostic solution that lets teams adopt the right tools without sacrificing productivity, ultimately turning the “one‑hammer” dilemma into a modular, cloud‑native workflow.
This article explores how Docker, as a container virtualization technology, addresses core challenges across software development, testing, and operations by standardizing environments, accelerating deployment, and enabling flexible, non‑intrusive workflows, ultimately bridging traditional silos and promoting efficient, collaborative DevOps practices.
The article examines Ctrip’s prolonged service restoration after a May 28 incident, analyzing the complexities of SOA‑based architectures, the pitfalls of black‑box operations, and how transitioning to white‑box, DevOps‑aligned practices can prevent similar outages.
This article explains the concept of DevOps, analyzes Baidu’s product‑line data to identify inefficiencies in the software delivery process, and proposes automation‑driven, lean‑focused measures such as continuous integration, script‑based testing and deployment, and single‑branch development to eliminate waste and improve collaboration between development and operations.
The article explains how visualizing both service delivery and service metrics is essential for modern operations, describing the evolution from ITIL processes to DevOps automation, continuous delivery of infrastructure and applications, and data‑driven measurement techniques that enable consistent, agile, and measurable operational performance.
This article explains why many IT teams struggle with code that works in development but fails in production, introduces Puppet as a configuration‑management platform, describes its declarative language, resources, types, providers, classes, manifests and modules, and shows how it enables reliable, collaborative DevOps workflows.
The article examines how modern cloud services, version‑control platforms, and automation tools can be combined to create a unified artifact repository and consistent deployment pipelines across environments, offering practical steps and cultural tips for achieving true continuous delivery.
This article compiles a comprehensive list of open‑source tools covering backup, cloning, cloud platforms, cloud workflows, distributed file systems, cloud storage, code review, collaboration suites, CMDB, configuration management, continuous integration/deployment, DNS, hosting control panels, IT asset management, and LDAP, providing a valuable resource for IT professionals.
Docker is an open‑source platform that packages applications into lightweight Linux containers, offering faster startup, isolated environments, and simple image management via Docker Hub, while providing core components like daemon, client, and networking modes, and spawning an ecosystem of tools such as CoreOS, Kubernetes, Deis, and Flynn for scalable deployment.
The article outlines the diverse duties of operations engineers—from networking and system administration to security, storage, testing, and communication—while critiquing industry hiring practices, emphasizing the essential role of ops in enterprises, and urging engineers to specialize and continuously improve.
The article explains how Shopify, a large Ruby on Rails‑based e‑commerce platform, adopts thin Docker containers with custom init processes, naming conventions, health checks, and a private registry to improve deployment efficiency, debugging, and resource utilization across its massive infrastructure.
Learn how tmux and its companion tmuxinator let you run multiple terminal sessions in a single window, streamline tasks like running Rails servers, managing databases, and deploying code, with step‑by‑step setup instructions, sample configuration, and essential key bindings for efficient workflow management.
This guide explains how to install pythonbrew, configure it for user or system-wide use, and leverage its commands to install, switch, and manage multiple Python versions and isolated environments on Linux.
Learn to set up a private Git server on a Linux machine, create groups and users, configure SSH keys, initialize a bare repository, and connect clients with detailed command‑line instructions for both server and client sides.
This article systematically outlines the essential steps and considerations—ranging from language choice, version control, hardware and data center selection, to architecture, software, database, storage, and code optimization—to help a small website scale from a few thousand daily visits to millions while avoiding costly pitfalls.
The article outlines the progressive skill set for operations engineers—T4 must master core operations, service metrics, and environment administration; T5 adds independent problem analysis, trade‑off judgment, and solution selection; T6 demands deep cross‑disciplinary knowledge, design elegance, data‑driven reasoning, and the ability to influence others, while also debunking common misconceptions about products, scripts, and platforms.
