# Introduction to DevOps > 🔗 Jump to other notes here > > * [DevOps Resources](/home/devops-everything/devops-resources.md) > * [Ansible](/home/devops-everything/devops-resources/ansible.md) > * [Docker](/home/devops-everything/devops-resources/docker.md) > * [Git](/home/devops-everything/devops-resources/git.md) > * [Kubernetes](/home/devops-everything/devops-resources/kubernetes.md) > * [Terraform](/home/devops-everything/devops-resources/terraform.md) > * [Vim](/home/devops-everything/devops-resources/vim.md) *** ![](/files/jdfWEynyGcHh7qzsGpxr) **DevOps Pipeline** Test ➡️ Build ➡️ Deploy ➡️ Configure ➡️ Monitor DevOps engineers have some know-how from both *DEV* and *OPERATIONs* teams, plus additional DevOps specific technical skills, the core one being building **CI/CD** (Continuous Integration / Continuous Delivery-Deployment) **pipelines**. ## Software Development Methodologies of software development: * Waterfall * [Agile](https://asana.com/resources/agile-methodology) (newer) * several project phases * each feature is tested, deployed * fast development, testing and deployment cycles * Continuous Integration, Continuous Delivery * it supports the need for DevOps tasks (best practices, automation tools ...) ![](/files/jT8TaaSaMm9rqQKUdUKo) The DevOps engineer needs to assist developers in building the application. This involves configuring automation tools (**CI/CD Pipelines**) to handle tests, build processes, and packaging the applications into Docker images. Finally, the DevOps engineer ensures the app runs smoothly on deployment servers. **Artifacts** are apps built into a single file (`jar`, `war`, `zip`, `tar`, etc). An **artifact repository** can store many different artifact formats by using a manager for managing them all. * [Nexus](https://help.sonatype.com/en/sonatype-nexus-repository.html) - private/internal usage * multi-format support * LDAP integration, user token support * REST API integration * Backup, restore * Tagging * Cleanup policies * Search functionality * [Maven Repository](https://mvnrepository.com/) - public (Java) * [npm](https://www.npmjs.com/) - public (Javascript) ### Software Versioning > * [Semantic Versioning](https://semver.org/) > * [jubianchi.github.io/semver-check/#/](https://jubianchi.github.io/semver-check/#/) > * [Semver cheatsheet - devhints.io](https://devhints.io/semver) **Major Version** * Indicates big changes * Usually involves breaking changes * NOT backward-compatible. * Incompatible API changes are made **Minor Version** * Introduces new but backward-compatible changes * May include new API features * Does not break existing functionality **Patch Version** * Contains minor changes and bug fixes * Does not alter the API *** ## IaaS **Infrastructure as a Service** (IaaS) offers compute, storage and networking on-demand from the cloud providers. **Cloud computing** refers to the **delivery of computing services** (servers, storage, databases, networking, software, and more) over the internet, allowing users to access and utilize these resources on-demand. *** ## 🪛 Linux Tools > I'm using [Ubuntu Desktop LTS](https://ubuntu.com/download/desktop) as Linux distro and `zsh` as default SHELL > > The install commands of the following tools can be found on my notes here - [Ubuntu VM - DevOps Tools](/home/operating-systems/linux/distros/ubuntu-vm.md#devops-tools) * Package Manager - `apt` for Debian/Ubuntu-based Linux distros * [git](https://git-scm.com/book/en/v2/Getting-Started-Installing-Git) (for Github, GitLab, etc) * [java - OpenJDK](https://itsfoss.com/install-java-ubuntu/) * [Node.js - npm](https://www.digitalocean.com/community/tutorials/how-to-install-node-js-on-ubuntu-20-04#option-1-installing-node-js-with-apt-from-the-default-repositories) * [VScode](https://code.visualstudio.com/docs/setup/linux#_debian-and-ubuntu-based-distributions) * [PyCharm](https://www.jetbrains.com/help/pycharm/installation-guide.html#standalone) * [Maven](https://maven.apache.org/install.html) (if necessary) * [Gradle](https://gradle.org/install/) (if necessary) * [Docker](https://docs.docker.com/engine/install/ubuntu/) * [k9s](https://k9scli.io/topics/install/) / [kubectl](https://kubernetes.io/docs/tasks/tools/install-kubectl-linux/#install-using-native-package-management) * [minikube](https://minikube.sigs.k8s.io/docs/start/) * [Helm](https://helm.sh/docs/intro/install/) * [Terraform](https://developer.hashicorp.com/terraform/tutorials/aws-get-started/install-cli) * [Ansible](https://docs.ansible.com/ansible/latest/installation_guide/intro_installation.html#installing-ansible-on-specific-operating-systems) * [Azure Cli](https://learn.microsoft.com/en-us/cli/azure/install-azure-cli) * [gcloud CLI](https://cloud.google.com/sdk/docs/install#deb) + [GCP gke-gcloud-auth-plugin](https://cloud.google.com/blog/products/containers-kubernetes/kubectl-auth-changes-in-gke) *** ## CI/CD Tools > [CI/CD](https://about.gitlab.com/topics/ci-cd/) - **Continuous Integration** / **Continuous Delivery**, pipeline > > [20 Best CI/CD Tools for 2024 - The CTO Club](https://thectoclub.com/tools/best-ci-cd-tools/) > > 📌 [List of Continuous Integration services | awesome-ci](https://ligurio.github.io/awesome-ci/) * [Github Actions](https://github.com/features/actions) * [Gitlab CI/CD](https://docs.gitlab.com/ee/ci/) * [Jenkins](https://www.jenkins.io/) * [Travis CI](https://www.travis-ci.com/) * [CircleCI](https://circleci.com/) * [SemaphoreCI](https://semaphoreci.com/) * [AppVeyor](https://www.appveyor.com/) * [Bamboo (Altassian)](https://www.atlassian.com/software/bamboo) * [Argo CD](https://argoproj.github.io/cd/) * [Harness](https://www.harness.io/) * [Flux](https://fluxcd.io/) * [Agola](https://github.com/agola-io/agola) * [Buildkite](https://buildkite.com/) * [GoCD](https://github.com/gocd/gocd) * [Octopus Deploy](https://octopus.com/) * [TeamCity](https://www.jetbrains.com/teamcity/) *** ## Containerization Containers ➡️ Image for every server, separate instances * [Docker](https://www.docker.com/) - `Dockerfile` *** ## Orchestration * [Kubernetes](https://kubernetes.io/) (**K8s**) - *automatic deployment, scaling, and management of containerized applications* *** ## Infrastructure Provisioning * [Terraform](https://www.terraform.io/) - *infrastructure automation to provision and manage resources in any cloud or data center* * Infrastructure as Code (**IaC**) * [Ansible](https://www.ansible.com/) - *automates provisioning, configuration management, application deployment, orchestration, and many other IT processes* - more for automation post configuration *** ## Monitoring * [Prometheus](https://prometheus.io/) - *systems and service monitoring system* * [Grafana](https://grafana.com/) - visualize data *** --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. 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