DevOps

Observability

• Datadog
• New Relic
• Sentry

Monitoring

• Application Metrics: Eg. monit
• Health-checks: Eg. UptimeKuma

Logging

Eg. Prometheus + Grafana

Instrumentation / Telemetry: Eg. OpenTelemetry allows taking future decision, based on current system behavior.

Alerting

• Gotify

Virtualization / Containerization

All services, including applications, databases, etc. require hardware resources, execution environment, maybe networking capabilities to perform optimally. Hence, it becomes critical to ensure there are enough resources available without cross-application interference. Following are popular efforts in this direction:

• Sandboxing allows running application in an isolated environment to protect system resources.
• Virtualization allows creation of virtual versions of computer resources, allowing multiple instances of isolated environments on the same hardware or across a distributed system. Eg. Vagrant.
• Containerization allows running applications and their dependencies in isolated containers, where containers may share the same operating system kernel but are isolated from other containers. Eg. Docker

Docker

Docker Compose

Orchestration / Infrastructure-as-Code

But as scale grows, Orchestration is required to manage the lifecycle of applications including handling tasks like deployment, scaling, load balancing, and networking. To make all these easier, Infrastructure-as-Code is an emerging term to avoid manual setups and rely on a single-source of truth files.

Kubernetes

• Manifests
• ConfigMaps
• Secrets

Tools/Extensions:

• Lens
• Istio
• Helm charts
• Argo CD
• Velero

Infrastructure as Code

• Provisioning: Eg. Terraform
• Configuration Management: Eg. Ansible
• Secrets: Eg. Vault
• Service Mesh: Eg. Consul
• Service Discovery: Eg. Traefik

Popular Stacks

• ELK
  • ElasticSearch
  • Logstash
  • Kibana
• OpenSearch
  • Prometheus
  • Grafana