37 lines
2.1 KiB
Markdown
37 lines
2.1 KiB
Markdown
# Health Checks
|
|
|
|
This section is still a work in progress.
|
|
|
|
[agent/checks](https://github.com/hashicorp/consul/tree/main/agent/checks) contains the logic for
|
|
performing active [health checking](https://www.consul.io/docs/agent/checks.html).
|
|
|
|
|
|
## Check Registration flows
|
|
|
|
There are many paths to register a check. Many of these use different struct
|
|
types, so to properly validate and convert a check, all of these paths must
|
|
be reviewed and tested.
|
|
|
|
1. API [/v1/catalog/register](https://www.consul.io/api-docs/catalog#register-entity) - the `Checks`
|
|
field on `structs.RegisterRequest`. The entrypoint is `CatalogRegister` in
|
|
[agent/catalog_endpoint.go].
|
|
2. API [/v1/agent/check/register](https://www.consul.io/api-docs/agent/check#register-check) - the entrypoint
|
|
is `AgentRegisterCheck` in [agent/agent_endpoint.go]
|
|
3. API [/v1/agent/service/register](https://www.consul.io/api-docs/agent/service#register-service) -
|
|
the `Check` or `Checks` fields on `ServiceDefinition`. The entrypoint is `AgentRegisterService`
|
|
in [agent/agent_endpoint.go].
|
|
4. Config [Checks](https://www.consul.io/docs/discovery/checks) - the `Checks` and `Check` fields
|
|
on `config.Config` in [agent/config/config.go].
|
|
5. Config [Service.Checks](https://www.consul.io/docs/discovery/services) - the
|
|
`Checks` and `Check` fields on `ServiceDefinition` in [agent/config/config.go].
|
|
6. CLI [consul services register](https://www.consul.io/commands/services/register) - the
|
|
`Checks` and `Check` fields on `api.AgentServiceRegistration`. The entrypoint is
|
|
`ServicesFromFiles` in [command/services/config.go].
|
|
7. API [/v1/txn](https://www.consul.io/api-docs/txn) - the `Transaction` API allows for registering a check.
|
|
|
|
|
|
[agent/catalog_endpoint.go]: https://github.com/hashicorp/consul/blob/main/agent/catalog_endpoint.go
|
|
[agent/agent_endpoint.go]: https://github.com/hashicorp/consul/blob/main/agent/agent_endpoint.go
|
|
[agent/config/config.go]: https://github.com/hashicorp/consul/blob/main/agent/config/config.go
|
|
[command/services/config.go]: https://github.com/hashicorp/consul/blob/main/command/services/config.go
|