Stages of DevOps
Software Development Process, Application Lifecycle Management, Systems Development Life Cycle, DevOps, Project & Product Management, Ownership, Leadership, & Agile, Twelve-Factor App methodology
Plan
Consists of define and plan. About business value and application requirements.
- Requirements Gathering
- Business value
- Plan releases
- Security
- Policies
- Compliance
- Auditing
- Risk Management
- Project & Product Management, Ownership, Leadership, & Agile
Create
Building, coding, and configuring of the software
Verify
Ensure the quality of the software release
Packaging
Activites when the release is ready for deployment, often also referred to as staging or Preproduction / "preprod"
- +Dependencies, Packaging, Building, Artifacts, Libraries, & Modules
- Approvals, preapprovals
- Package configuration
- Triggered releases
- Release staging and holding
- Deployment Environment
- e.g., dev, qa, sandbox, staging, prod, etc
- Software Repository for artifacts, containers, etc.
- Software Release Life Cycle
Schedule, orchestration, provisioning and deploying software into production and targeted environment
- +Deployment, Release, Provisioning, & Orchestration
- Often the same as deployment where your deployment is the release. But you can optionally separate them via Blue-Green Deployment or Feature Flags.
- Promotion of applications
- Can use your configuration manager like Ansible, Puppet, Terraform, etc.
- Fallbacks and recovery
- Scheduling/timed releases
- Release Management
- Application-Release Automation
- Release coordination
- Release Notes
Configure
Configure activities fall under the operation side of DevOps. Once software is deployed, there may be additional IT infrastructure provisioning and configuration activities required.
- Operations - Infrastructure-related provisioning and configuring
- Application provision and configuration.
- Infrastructure storage, database and network provisioning and configuring
- Configuration Management
- Infrastructure as Code
- +Change Management, Change Control, & Configuration Management
Allows IT organization to identify specific issues of specific releases and to understand the impact on end-users.
- Performance of IT infrastructure
- End-user response and experience
- Production metrics and statistics
- Information from monitoring activities often impacts Plan activities required for changes and for new release cycles.
- Software Measurement
- Site Reliability Engineering
The management of changes to documents, computer programs, large web sites, and other collections of information.