Observability

The observability domain is the largest by package count — base + OTLP exporter + 13 cloud-provider adapters + 18 dependency-health probes.

Click any package name to jump to its source-doc.

Base + OTLP

Package	NuGet ID	Maturity	Capability
Observability (base)	Cephalon.Observability	M3	Capability.Observability
OpenTelemetry	Cephalon.Observability.OpenTelemetry	M3	Capability.Observability

Cephalon.Observability.OpenTelemetry is the canonical exporter. Every cloud-provider adapter below depends on it; if you want OTLP-to-self-hosted-collector, this is the only adapter you need.

Cloud-provider adapters (13)

These configure OTLP to target a managed observability backend, populate vendor-specific resource attributes, and offer authentication helpers.

Package	NuGet ID	Engine:Observability:Provider	Maturity
Alibaba Cloud	Cephalon.Observability.AlibabaCloud	"AlibabaCloud"	M2
AWS	Cephalon.Observability.Aws	"Aws"	M3
Azure Monitor	Cephalon.Observability.AzureMonitor	"AzureMonitor"	M3
DigitalOcean	Cephalon.Observability.DigitalOcean	"DigitalOcean"	M2
GCP	Cephalon.Observability.Gcp	"Gcp"	M3
Grafana Cloud	Cephalon.Observability.GrafanaCloud	"GrafanaCloud"	M3
Huawei Cloud	Cephalon.Observability.HuaweiCloud	"HuaweiCloud"	M2
Kubernetes	Cephalon.Observability.Kubernetes	"Kubernetes"	M3
New Relic	Cephalon.Observability.NewRelic	"NewRelic"	M3
OpenShift	Cephalon.Observability.OpenShift	"OpenShift"	M2
Oracle Cloud	Cephalon.Observability.OracleCloud	"OracleCloud"	M2
Tanzu	Cephalon.Observability.Tanzu	"Tanzu"	M2
Serilog	Cephalon.Observability.Serilog	"Serilog"	M3

Dependency-health probes (18)

Each probe registers an IHealthCheck that joins /health output. Install only the ones your app depends on.

Package	NuGet ID	Probes
Cassandra	Cephalon.Observability.CassandraDependencies	Cassandra cluster
ClickHouse	Cephalon.Observability.ClickHouseDependencies	ClickHouse cluster
Consul	Cephalon.Observability.ConsulDependencies	HashiCorp Consul
Elasticsearch	Cephalon.Observability.ElasticsearchDependencies	Elasticsearch cluster
HTTP	Cephalon.Observability.HttpDependencies	Any HTTP endpoint
Kafka	Cephalon.Observability.KafkaDependencies	Kafka brokers
Memcached	Cephalon.Observability.MemcachedDependencies	Memcached
MongoDB	Cephalon.Observability.MongoDbDependencies	MongoDB replica set
MQTT	Cephalon.Observability.MqttDependencies	MQTT broker
MySQL	Cephalon.Observability.MySqlDependencies	MySQL server
NATS	Cephalon.Observability.NatsDependencies	NATS cluster
Neo4j	Cephalon.Observability.Neo4jDependencies	Neo4j cluster
OpenSearch	Cephalon.Observability.OpenSearchDependencies	OpenSearch cluster
Oracle	Cephalon.Observability.OracleDependencies	Oracle DB
Postgres	Cephalon.Observability.PostgresDependencies	Postgres server
RabbitMQ	Cephalon.Observability.RabbitMqDependencies	RabbitMQ broker
Redis	Cephalon.Observability.RedisDependencies	Redis (incl. Sentinel/Cluster)
SQL Server	Cephalon.Observability.SqlServerDependencies	SQL Server

All probes are M3.

Install matrix

Scenario	Packages
Local dev with OTLP collector	Cephalon.Observability + Cephalon.Observability.OpenTelemetry
Production with Grafana Cloud	+ Cephalon.Observability.GrafanaCloud
Production with Azure Monitor	+ Cephalon.Observability.AzureMonitor
App uses Postgres + Redis + RabbitMQ	+ Cephalon.Observability.PostgresDependencies + .RedisDependencies + .RabbitMqDependencies

Configuration shape

appsettings.json

{
  "Engine": {
    "Observability": {
      "Provider": "GrafanaCloud",
      "Endpoint": "https://otlp-gateway-prod-us-east-0.grafana.net/otlp",
      "Headers": { "Authorization": "Bearer <token>" },
      "Sampling": { "Strategy": "RatioBased", "Ratio": 0.1 },
      "Logs":    { "Enabled": true },
      "Metrics": { "Enabled": true },
      "Traces":  { "Enabled": true }
    }
  }
}

Full schema + 6 cloud-vendor scenarios: Reference → Configuration → Observability.

See also

• Technology → Observability — narrative.
• Reference → Configuration → Observability — full schema with 6 scenarios.
• Guide → Operations — observability defaults + dependency-health checklist.