mirror of https://github.com/hashicorp/consul
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
837 lines
30 KiB
837 lines
30 KiB
---
|
|
layout: api
|
|
page_title: Service - Agent - HTTP API
|
|
description: |-
|
|
The /agent/service endpoints interact with services on the local agent in
|
|
Consul.
|
|
---
|
|
|
|
# Service - Agent HTTP API
|
|
|
|
The `/agent/service` endpoints interact with services on the local agent in
|
|
Consul. These should not be confused with services in the catalog.
|
|
|
|
## List Services
|
|
|
|
This endpoint returns all the services that are registered with
|
|
the local agent. These services were either provided through configuration files
|
|
or added dynamically using the HTTP API.
|
|
|
|
It is important to note that the services known by the agent may be different
|
|
from those reported by the catalog. This is usually due to changes being made
|
|
while there is no leader elected. The agent performs active
|
|
[anti-entropy](/docs/internals/anti-entropy), so in most situations
|
|
everything will be in sync within a few seconds.
|
|
|
|
| Method | Path | Produces |
|
|
| ------ | ----------------- | ------------------ |
|
|
| `GET` | `/agent/services` | `application/json` |
|
|
|
|
The table below shows this endpoint's support for
|
|
[blocking queries](/api/features/blocking),
|
|
[consistency modes](/api/features/consistency),
|
|
[agent caching](/api/features/caching), and
|
|
[required ACLs](/api#authentication).
|
|
|
|
| Blocking Queries | Consistency Modes | Agent Caching | ACL Required |
|
|
| ---------------- | ----------------- | ------------- | -------------- |
|
|
| `NO` | `none` | `none` | `service:read` |
|
|
|
|
### Parameters
|
|
|
|
- `filter` `(string: "")` - Specifies the expression used to filter the
|
|
queries results prior to returning the data.
|
|
|
|
- `ns` `(string: "")` <EnterpriseAlert inline /> - Specifies the namespace in which
|
|
to list services. This value can be specified as the `ns` URL query
|
|
parameter or the `X-Consul-Namespace` header. If not provided by either,
|
|
the namespace will be inherited from the request's ACL token or will default
|
|
to the `default` namespace. Added in Consul 1.7.0.
|
|
|
|
### Sample Request
|
|
|
|
```shell-session
|
|
$ curl \
|
|
http://127.0.0.1:8500/v1/agent/services
|
|
```
|
|
|
|
### Sample Response
|
|
|
|
```json
|
|
{
|
|
"redis": {
|
|
"ID": "redis",
|
|
"Service": "redis",
|
|
"Tags": [],
|
|
"TaggedAddresses": {
|
|
"lan": {
|
|
"address": "127.0.0.1",
|
|
"port": 8000
|
|
},
|
|
"wan": {
|
|
"address": "198.51.100.53",
|
|
"port": 80
|
|
}
|
|
},
|
|
"Meta": {
|
|
"redis_version": "4.0"
|
|
},
|
|
"Namespace": "default",
|
|
"Port": 8000,
|
|
"Address": "",
|
|
"EnableTagOverride": false,
|
|
"Datacenter": "dc1",
|
|
"Weights": {
|
|
"Passing": 10,
|
|
"Warning": 1
|
|
}
|
|
}
|
|
}
|
|
```
|
|
|
|
### Filtering
|
|
|
|
The filter is executed against each value in the service mapping with the
|
|
following selectors and filter operations being supported:
|
|
|
|
| Selector | Supported Operations |
|
|
| --------------------------------------------- | -------------------------------------------------- |
|
|
| `Address` | Equal, Not Equal, In, Not In, Matches, Not Matches |
|
|
| `Connect.Native` | Equal, Not Equal |
|
|
| `EnableTagOverride` | Equal, Not Equal |
|
|
| `ID` | Equal, Not Equal, In, Not In, Matches, Not Matches |
|
|
| `Kind` | Equal, Not Equal, In, Not In, Matches, Not Matches |
|
|
| `Meta` | Is Empty, Is Not Empty, In, Not In |
|
|
| `Meta.<any>` | Equal, Not Equal, In, Not In, Matches, Not Matches |
|
|
| `Port` | Equal, Not Equal |
|
|
| `Proxy.DestinationServiceID` | Equal, Not Equal, In, Not In, Matches, Not Matches |
|
|
| `Proxy.DestinationServiceName` | Equal, Not Equal, In, Not In, Matches, Not Matches |
|
|
| `Proxy.LocalServiceAddress` | Equal, Not Equal, In, Not In, Matches, Not Matches |
|
|
| `Proxy.LocalServicePort` | Equal, Not Equal |
|
|
| `Proxy.Mode` | Equal, Not Equal, In, Not In, Matches, Not Matches |
|
|
| `Proxy.TransparentProxy.OutboundListenerPort` | Equal, Not Equal |
|
|
| `Proxy.MeshGateway.Mode` | Equal, Not Equal, In, Not In, Matches, Not Matches |
|
|
| `Proxy.Upstreams` | Is Empty, Is Not Empty |
|
|
| `Proxy.Upstreams.Datacenter` | Equal, Not Equal, In, Not In, Matches, Not Matches |
|
|
| `Proxy.Upstreams.DestinationName` | Equal, Not Equal, In, Not In, Matches, Not Matches |
|
|
| `Proxy.Upstreams.DestinationNamespace` | Equal, Not Equal, In, Not In, Matches, Not Matches |
|
|
| `Proxy.Upstreams.DestinationType` | Equal, Not Equal, In, Not In, Matches, Not Matches |
|
|
| `Proxy.Upstreams.LocalBindAddress` | Equal, Not Equal, In, Not In, Matches, Not Matches |
|
|
| `Proxy.Upstreams.LocalBindPort` | Equal, Not Equal |
|
|
| `Proxy.Upstreams.MeshGateway.Mode` | Equal, Not Equal, In, Not In, Matches, Not Matches |
|
|
| `Service` | Equal, Not Equal, In, Not In, Matches, Not Matches |
|
|
| `TaggedAddresses` | Is Empty, Is Not Empty, In, Not In |
|
|
| `TaggedAddresses.<any>.Address` | Equal, Not Equal, In, Not In, Matches, Not Matches |
|
|
| `TaggedAddresses.<any>.Port` | Equal, Not Equal |
|
|
| `Tags` | In, Not In, Is Empty, Is Not Empty |
|
|
| `Weights.Passing` | Equal, Not Equal |
|
|
| `Weights.Warning` | Equal, Not Equal |
|
|
|
|
## Get Service Configuration
|
|
|
|
This endpoint was added in Consul 1.3.0 and returns the full service definition
|
|
for a single service instance registered on the local agent. It is used by
|
|
[Connect proxies](/docs/connect/proxies) to discover the embedded proxy
|
|
configuration that was registered with the instance.
|
|
|
|
It is important to note that the services known by the agent may be different
|
|
from those reported by the catalog. This is usually due to changes being made
|
|
while there is no leader elected. The agent performs active
|
|
[anti-entropy](/docs/internals/anti-entropy), so in most situations
|
|
everything will be in sync within a few seconds.
|
|
|
|
| Method | Path | Produces |
|
|
| ------ | ---------------------------- | ------------------ |
|
|
| `GET` | `/agent/service/:service_id` | `application/json` |
|
|
|
|
The table below shows this endpoint's support for
|
|
[blocking queries](/api/features/blocking),
|
|
[consistency modes](/api/features/consistency),
|
|
[agent caching](/api/features/caching), and
|
|
[required ACLs](/api#authentication).
|
|
|
|
| Blocking Queries | Consistency Modes | Agent Caching | ACL Required |
|
|
| ----------------- | ----------------- | ------------- | -------------- |
|
|
| `YES`<sup>1</sup> | `none` | `none` | `service:read` |
|
|
|
|
<sup>
|
|
1
|
|
</sup> Supports <a href="/api/features/blocking#hash-based-blocking-queries">
|
|
hash-based blocking
|
|
</a> only.
|
|
|
|
### Parameters
|
|
|
|
- `service_id` `(string: <required>)` - Specifies the ID of the service to
|
|
fetch. This is specified as part of the URL.
|
|
|
|
- `ns` `(string: "")` <EnterpriseAlert inline /> - Specifies the namespace to lookup
|
|
the service's configuration. This value can be specified as the `ns` URL query
|
|
parameter or the `X-Consul-Namespace` header. If not provided by either,
|
|
the namespace will be inherited from the request's ACL token or will default
|
|
to the `default` namespace. Added in Consul 1.7.0.
|
|
|
|
### Sample Request
|
|
|
|
```shell-session
|
|
$ curl \
|
|
http://127.0.0.1:8500/v1/agent/service/web-sidecar-proxy
|
|
```
|
|
|
|
### Sample Response
|
|
|
|
```json
|
|
{
|
|
"Kind": "connect-proxy",
|
|
"ID": "web-sidecar-proxy",
|
|
"Service": "web-sidecar-proxy",
|
|
"Tags": null,
|
|
"Meta": null,
|
|
"Namespace": "default",
|
|
"Port": 18080,
|
|
"Address": "",
|
|
"TaggedAddresses": {
|
|
"lan": {
|
|
"address": "127.0.0.1",
|
|
"port": 8000
|
|
},
|
|
"wan": {
|
|
"address": "198.51.100.53",
|
|
"port": 80
|
|
}
|
|
},
|
|
"Weights": {
|
|
"Passing": 1,
|
|
"Warning": 1
|
|
},
|
|
"EnableTagOverride": false,
|
|
"Datacenter": "dc1",
|
|
"ContentHash": "4ecd29c7bc647ca8",
|
|
"Proxy": {
|
|
"DestinationServiceName": "web",
|
|
"DestinationServiceID": "web",
|
|
"LocalServiceAddress": "127.0.0.1",
|
|
"LocalServicePort": 8080,
|
|
"Mode": "transparent",
|
|
"TransparentProxy": {
|
|
"OutboundListenerPort": 22500
|
|
},
|
|
"Config": {
|
|
"foo": "bar"
|
|
},
|
|
"Upstreams": [
|
|
{
|
|
"DestinationType": "service",
|
|
"DestinationName": "db",
|
|
"LocalBindPort": 9191
|
|
}
|
|
]
|
|
}
|
|
}
|
|
```
|
|
|
|
The response has the same structure as the [service
|
|
definition](/docs/agent/services) with one extra field `ContentHash` which
|
|
contains the [hash-based blocking
|
|
query](/api/features/blocking#hash-based-blocking-queries) hash for the result. The
|
|
same hash is also present in `X-Consul-ContentHash`.
|
|
|
|
## Get local service health
|
|
|
|
Retrieve an aggregated state of service(s) on the local agent by name.
|
|
|
|
This endpoints support JSON format and text/plain formats, JSON being the
|
|
default. In order to get the text format, you can append `?format=text` to
|
|
the URL or use Mime Content negotiation by specifying a HTTP Header
|
|
`Accept` starting with `text/plain`.
|
|
|
|
| Method | Path | Produces |
|
|
| ------ | ------------------------------------------------------ | ------------------ |
|
|
| `GET` | `/agent/health/service/name/:service_name` | `application/json` |
|
|
| `GET` | `/agent/health/service/name/:service_name?format=text` | `text/plain` |
|
|
|
|
The table below shows this endpoint's support for
|
|
[blocking queries](/api/features/blocking),
|
|
[consistency modes](/api/features/consistency),
|
|
[agent caching](/api/features/caching), and
|
|
[required ACLs](/api#authentication).
|
|
|
|
| Blocking Queries | Consistency Modes | Agent Caching | ACL Required |
|
|
| ---------------- | ----------------- | ------------- | -------------- |
|
|
| `NO` | `none` | `none` | `service:read` |
|
|
|
|
### Parameters
|
|
|
|
- `service_name` `(string: <required>)` - Specifies the name of the service to
|
|
retrieve. This is specified as part of the URL.
|
|
|
|
- `ns` `(string: "")` <EnterpriseAlert inline /> - Specifies the namespace to lookup
|
|
the service's health data. This value can be specified as the `ns` URL query
|
|
parameter or the `X-Consul-Namespace` header. If not provided by either,
|
|
the namespace will be inherited from the request's ACL token or will default
|
|
to the `default` namespace. Added in Consul 1.7.0.
|
|
|
|
Those endpoints return the aggregated values of all health checks for the
|
|
service instance(s) and will return the corresponding HTTP codes:
|
|
|
|
| Result | Meaning |
|
|
| ------ | --------------------------------------------------------------- |
|
|
| `200` | All health checks of every matching service instance are passing |
|
|
| `400` | Bad parameter (missing service name of id) |
|
|
| `404` | No such service id or name |
|
|
| `429` | Some health checks are passing, at least one is warning |
|
|
| `503` | At least one of the health checks is critical |
|
|
|
|
Those endpoints might be useful for the following use-cases:
|
|
|
|
- a load-balancer wants to check IP connectivity with an agent and retrieve
|
|
the aggregated status of given service
|
|
- create aliases for a given service (thus, the health check of alias uses
|
|
http://localhost:8500/v1/agent/service/id/aliased_service_id health check)
|
|
|
|
##### Note
|
|
|
|
If you know the ID of service you want to target, it is recommended to use
|
|
[`/v1/agent/health/service/id/:service_id`](/api/agent/service#get-local-service-health-by-id)
|
|
so you have the result for the service only. When requesting
|
|
`/v1/agent/health/service/name/:service_name`, the caller will receive the
|
|
worst state of all services having the given name.
|
|
|
|
### Sample Requests
|
|
|
|
Given 2 services with name `web`, with web2 critical and web1 passing:
|
|
|
|
#### List the worst status across all instances of the `web` service (HTTP 503)
|
|
|
|
##### By Name, Text
|
|
|
|
```shell
|
|
$ curl http://localhost:8500/v1/agent/health/service/name/web?format=text
|
|
critical
|
|
```
|
|
|
|
##### By Name, JSON
|
|
|
|
For the JSON output, the response is an array containing the details of each
|
|
passing, warning, or critical service.
|
|
|
|
```shell
|
|
curl localhost:8500/v1/agent/health/service/name/web
|
|
```
|
|
|
|
```json
|
|
[
|
|
{
|
|
"AggregatedStatus": "passing",
|
|
"Service": {
|
|
"ID": "web1",
|
|
"Service": "web",
|
|
"Tags": [
|
|
"rails"
|
|
],
|
|
"Meta": {},
|
|
"Port": 80,
|
|
"Address": "",
|
|
"SocketPath": "",
|
|
"TaggedAddresses": {
|
|
"lan": {
|
|
"Address": "127.0.0.1",
|
|
"Port": 8000
|
|
},
|
|
"wan": {
|
|
"Address": "198.51.100.53",
|
|
"Port": 80
|
|
}
|
|
},
|
|
"Weights": {
|
|
"Passing": 1,
|
|
"Warning": 1
|
|
},
|
|
"EnableTagOverride": false,
|
|
"Namespace": "default",
|
|
"Datacenter": "dc1"
|
|
},
|
|
"Checks": []
|
|
},
|
|
{
|
|
"AggregatedStatus": "critical",
|
|
"Service": {
|
|
"ID": "web2",
|
|
"Service": "web",
|
|
"Tags": [
|
|
"rails"
|
|
],
|
|
"Meta": {},
|
|
"Port": 80,
|
|
"Address": "",
|
|
"SocketPath": "",
|
|
"TaggedAddresses": {
|
|
"lan": {
|
|
"Address": "127.0.0.1",
|
|
"Port": 8000
|
|
},
|
|
"wan": {
|
|
"Address": "198.51.100.54",
|
|
"Port": 80
|
|
}
|
|
},
|
|
"Weights": {
|
|
"Passing": 1,
|
|
"Warning": 1
|
|
},
|
|
"EnableTagOverride": false,
|
|
"Namespace": "default",
|
|
"Datacenter": "dc1"
|
|
},
|
|
"Checks": [
|
|
{
|
|
"Node": "server1",
|
|
"CheckID": "service:web2",
|
|
"Name": "Service 'web' check",
|
|
"Status": "critical",
|
|
"Notes": "",
|
|
"Output": "Get \"http://localhost/health\": dial tcp [::1]:80: connect: connection refused",
|
|
"ServiceID": "web2",
|
|
"ServiceName": "web",
|
|
"ServiceTags": [
|
|
"rails"
|
|
],
|
|
"Type": "",
|
|
"Namespace": "default",
|
|
"Definition": {
|
|
"Interval": "0s",
|
|
"Timeout": "0s",
|
|
"DeregisterCriticalServiceAfter": "0s",
|
|
"HTTP": "",
|
|
"Header": null,
|
|
"Method": "",
|
|
"Body": "",
|
|
"TLSServerName": "",
|
|
"TLSSkipVerify": false,
|
|
"TCP": ""
|
|
},
|
|
"CreateIndex": 0,
|
|
"ModifyIndex": 0
|
|
}
|
|
]
|
|
}
|
|
]
|
|
```
|
|
|
|
## Get local service health by ID ((#get-local-service-health-by-its-id))
|
|
|
|
Retrieve the health state of a specific service on the local agent by ID.
|
|
|
|
| Method | Path | Produces |
|
|
| ------ | -------------------------------------------------- | ------------------ |
|
|
| `GET` | `/agent/health/service/id/:service_id` | `application/json` |
|
|
| `GET` | `/agent/health/service/id/:service_id?format=text` | `text/plain` |
|
|
|
|
The supported request parameters are the same as
|
|
[`/v1/agent/health/service/name/:service_name`](/api/agent/service#get-local-service-health).
|
|
|
|
### Sample Requests
|
|
|
|
Query the health status of the service with ID `web2`.
|
|
|
|
#### List status of web2 (HTTP 503)
|
|
|
|
##### Failure By ID, Text
|
|
|
|
```shell
|
|
$ curl http://localhost:8500/v1/agent/health/service/id/web2?format=text
|
|
critical
|
|
```
|
|
|
|
##### Failure By ID, JSON
|
|
|
|
In JSON, the output for a query by ID is an object containing only the details
|
|
for that service.
|
|
|
|
```shell
|
|
curl localhost:8500/v1/agent/health/service/id/web2
|
|
```
|
|
|
|
```json
|
|
{
|
|
"AggregatedStatus": "critical",
|
|
"Service": {
|
|
"ID": "web2",
|
|
"Service": "web",
|
|
"Tags": [
|
|
"rails"
|
|
],
|
|
"Meta": {},
|
|
"Port": 80,
|
|
"Address": "",
|
|
"SocketPath": "",
|
|
"TaggedAddresses": {
|
|
"lan": {
|
|
"Address": "127.0.0.1",
|
|
"Port": 8000
|
|
},
|
|
"wan": {
|
|
"Address": "198.51.100.54",
|
|
"Port": 80
|
|
}
|
|
},
|
|
"Weights": {
|
|
"Passing": 1,
|
|
"Warning": 1
|
|
},
|
|
"EnableTagOverride": false,
|
|
"Namespace": "default",
|
|
"Datacenter": "dc1"
|
|
},
|
|
"Checks": [
|
|
{
|
|
"Node": "server1",
|
|
"CheckID": "service:web2",
|
|
"Name": "Service 'web' check",
|
|
"Status": "critical",
|
|
"Notes": "",
|
|
"Output": "Get \"http://localhost/health\": dial tcp [::1]:80: connect: connection refused",
|
|
"ServiceID": "web2",
|
|
"ServiceName": "web",
|
|
"ServiceTags": [
|
|
"rails"
|
|
],
|
|
"Type": "",
|
|
"Namespace": "default",
|
|
"Definition": {
|
|
"Interval": "0s",
|
|
"Timeout": "0s",
|
|
"DeregisterCriticalServiceAfter": "0s",
|
|
"HTTP": "",
|
|
"Header": null,
|
|
"Method": "",
|
|
"Body": "",
|
|
"TLSServerName": "",
|
|
"TLSSkipVerify": false,
|
|
"TCP": ""
|
|
},
|
|
"CreateIndex": 0,
|
|
"ModifyIndex": 0
|
|
}
|
|
]
|
|
}
|
|
```
|
|
|
|
#### List status of web1 (HTTP 200)
|
|
|
|
##### Success By ID, Text
|
|
|
|
```shell
|
|
$ curl localhost:8500/v1/agent/health/service/id/web1?format=text
|
|
passing
|
|
```
|
|
|
|
#### Success By ID, JSON
|
|
|
|
```shell
|
|
curl localhost:8500/v1/agent/health/service/id/web1
|
|
```
|
|
|
|
```json
|
|
{
|
|
"AggregatedStatus": "passing",
|
|
"Service": {
|
|
"ID": "web1",
|
|
"Service": "web",
|
|
"Tags": [
|
|
"rails"
|
|
],
|
|
"Meta": {},
|
|
"Port": 80,
|
|
"Address": "",
|
|
"SocketPath": "",
|
|
"TaggedAddresses": {
|
|
"lan": {
|
|
"Address": "127.0.0.1",
|
|
"Port": 8000
|
|
},
|
|
"wan": {
|
|
"Address": "198.51.100.53",
|
|
"Port": 80
|
|
}
|
|
},
|
|
"Weights": {
|
|
"Passing": 1,
|
|
"Warning": 1
|
|
},
|
|
"EnableTagOverride": false,
|
|
"Namespace": "default",
|
|
"Datacenter": "dc1"
|
|
},
|
|
"Checks": []
|
|
}
|
|
```
|
|
|
|
## Register Service
|
|
|
|
This endpoint adds a new service, with optional health checks, to the local
|
|
agent.
|
|
|
|
The agent is responsible for managing the status of its local services, and for
|
|
sending updates about its local services to the servers to keep the global
|
|
catalog in sync.
|
|
|
|
For "connect-proxy" kind services, the `service:write` ACL for the
|
|
`Proxy.DestinationServiceName` value is also required to register the service.
|
|
|
|
| Method | Path | Produces |
|
|
| ------ | ------------------------- | ------------------ |
|
|
| `PUT` | `/agent/service/register` | `application/json` |
|
|
|
|
The table below shows this endpoint's support for
|
|
[blocking queries](/api/features/blocking),
|
|
[consistency modes](/api/features/consistency),
|
|
[agent caching](/api/features/caching), and
|
|
[required ACLs](/api#authentication).
|
|
|
|
| Blocking Queries | Consistency Modes | Agent Caching | ACL Required |
|
|
| ---------------- | ----------------- | ------------- | --------------- |
|
|
| `NO` | `none` | `none` | `service:write` |
|
|
|
|
### Query string parameters
|
|
|
|
- `replace-existing-checks` - Missing health checks from the request will be deleted from the agent. Using this parameter allows to idempotently register a service and its checks without having to manually deregister checks.
|
|
|
|
### Parameters
|
|
|
|
Note that this endpoint, unlike most also [supports `snake_case`](/docs/agent/services#service-definition-parameter-case)
|
|
service definition keys for compatibility with the config file format.
|
|
|
|
- `Name` `(string: <required>)` - Specifies the logical name of the service.
|
|
Many service instances may share the same logical service name. We recommend using
|
|
[valid DNS labels](https://en.wikipedia.org/wiki/Hostname#Restrictions_on_valid_hostnames)
|
|
for [compatibility with external DNS](/docs/agent/services#service-and-tag-names-with-dns).
|
|
|
|
- `ID` `(string: "")` - Specifies a unique ID for this service. This must be
|
|
unique per _agent_. This defaults to the `Name` parameter if not provided.
|
|
|
|
- `Tags` `(array<string>: nil)` - Specifies a list of tags to assign to the
|
|
service. These tags can be used for later filtering and are exposed via the APIs.
|
|
We recommend using [valid DNS labels](https://en.wikipedia.org/wiki/Hostname#Restrictions_on_valid_hostnames)
|
|
for [compatibility with external DNS](/docs/agent/services#service-and-tag-names-with-dns)
|
|
|
|
- `Address` `(string: "")` - Specifies the address of the service. If not
|
|
provided, the agent's address is used as the address for the service during
|
|
DNS queries.
|
|
|
|
- `TaggedAddresses` `(map<string|object>: nil)` - Specifies a map of explicit LAN
|
|
and WAN addresses for the service instance. Both the address and port can be
|
|
specified within the map values.
|
|
|
|
- `Meta` `(map<string|string>: nil)` - Specifies arbitrary KV metadata
|
|
linked to the service instance.
|
|
|
|
- `ns` `(string: "")` <EnterpriseAlert inline /> - Specifies the namespace in
|
|
which to register the service. This value can be specified as the `ns` URL query
|
|
parameter or the `X-Consul-Namespace` header. If not provided by either,
|
|
the namespace will be inherited from the request's ACL token or will default
|
|
to the `default` namespace. Added in Consul 1.7.0.
|
|
|
|
- `Port` `(int: 0)` - Specifies the port of the service.
|
|
|
|
- `Kind` `(string: "")` - The kind of service. Defaults to "" which is a
|
|
typical Consul service. This value may also be "connect-proxy" for
|
|
[Connect](/docs/connect) proxies representing another service,
|
|
"mesh-gateway" for instances of a [mesh gateway](/docs/connect/mesh-gateway),
|
|
"terminating-gateway" for instances of a [terminating gateway](/docs/connect/terminating-gateway),
|
|
or "ingress-gateway" for instances of a [ingress gateway](/docs/connect/ingress-gateway).
|
|
|
|
- `Proxy` `(Proxy: nil)` - From 1.2.3 on, specifies the configuration for a
|
|
Connect service proxy instance. This is only valid if `Kind` defines a proxy or gateway.
|
|
See the [Proxy documentation](/docs/connect/registration/service-registration)
|
|
for full details.
|
|
|
|
- `Connect` `(Connect: nil)` - Specifies the
|
|
[configuration for Connect](/docs/connect/configuration). See the
|
|
[Connect Structure](#connect-structure) section below for supported fields.
|
|
|
|
- `Check` `(Check: nil)` - Specifies a check. Please see the
|
|
[check documentation](/api/agent/check) for more information about the
|
|
accepted fields. If you don't provide a name or id for the check then they
|
|
will be generated. To provide a custom id and/or name set the `CheckID`
|
|
and/or `Name` field.
|
|
|
|
- `Checks` `(array<Check>: nil)` - Specifies a list of checks. Please see the
|
|
[check documentation](/api/agent/check) for more information about the
|
|
accepted fields. If you don't provide a name or id for the check then they
|
|
will be generated. To provide a custom id and/or name set the `CheckID`
|
|
and/or `Name` field. The automatically generated `Name` and `CheckID` depend
|
|
on the position of the check within the array, so even though the behavior is
|
|
deterministic, it is recommended for all checks to either let consul set the
|
|
`CheckID` by leaving the field empty/omitting it or to provide a unique value.
|
|
|
|
- `EnableTagOverride` `(bool: false)` - Specifies to disable the anti-entropy
|
|
feature for this service's tags. If `EnableTagOverride` is set to `true` then
|
|
external agents can update this service in the [catalog](/api/catalog)
|
|
and modify the tags. Subsequent local sync operations by this agent will
|
|
ignore the updated tags. For instance, if an external agent modified both the
|
|
tags and the port for this service and `EnableTagOverride` was set to `true`
|
|
then after the next sync cycle the service's port would revert to the original
|
|
value but the tags would maintain the updated value. As a counter example, if
|
|
an external agent modified both the tags and port for this service and
|
|
`EnableTagOverride` was set to `false` then after the next sync cycle the
|
|
service's port _and_ the tags would revert to the original value and all
|
|
modifications would be lost.
|
|
|
|
- `Weights` `(Weights: nil)` - Specifies weights for the service. Please see the
|
|
[service documentation](/docs/agent/services) for more information about
|
|
weights. If this field is not provided weights will default to
|
|
`{"Passing": 1, "Warning": 1}`.
|
|
|
|
It is important to note that this applies only to the locally registered
|
|
service. If you have multiple nodes all registering the same service their
|
|
`EnableTagOverride` configuration and all other service configuration items
|
|
are independent of one another. Updating the tags for the service registered
|
|
on one node is independent of the same service (by name) registered on
|
|
another node. If `EnableTagOverride` is not specified the default value is
|
|
`false`. See [anti-entropy syncs](/docs/internals/anti-entropy) for
|
|
more info.
|
|
|
|
#### Connect Structure
|
|
|
|
For the `Connect` field, the parameters are:
|
|
|
|
- `Native` `(bool: false)` - Specifies whether this service supports
|
|
the [Connect](/docs/connect) protocol [natively](/docs/connect/native).
|
|
If this is true, then Connect proxies, DNS queries, etc. will be able to
|
|
service discover this service.
|
|
- `Proxy` `(Proxy: nil)` -
|
|
[**Deprecated**](/docs/connect/proxies/managed-deprecated) Specifies that
|
|
a managed Connect proxy should be started for this service instance, and
|
|
optionally provides configuration for the proxy. The format is as documented
|
|
in [Managed Proxy Deprecation](/docs/connect/proxies/managed-deprecated).
|
|
- `SidecarService` `(ServiceDefinition: nil)` - Specifies an optional nested
|
|
service definition to register. For more information see
|
|
[Sidecar Service Registration](/docs/connect/registration/sidecar-service).
|
|
|
|
### Sample Payload
|
|
|
|
```json
|
|
{
|
|
"ID": "redis1",
|
|
"Name": "redis",
|
|
"Tags": ["primary", "v1"],
|
|
"Address": "127.0.0.1",
|
|
"Port": 8000,
|
|
"Meta": {
|
|
"redis_version": "4.0"
|
|
},
|
|
"EnableTagOverride": false,
|
|
"Check": {
|
|
"DeregisterCriticalServiceAfter": "90m",
|
|
"Args": ["/usr/local/bin/check_redis.py"],
|
|
"Interval": "10s",
|
|
"Timeout": "5s"
|
|
},
|
|
"Weights": {
|
|
"Passing": 10,
|
|
"Warning": 1
|
|
}
|
|
}
|
|
```
|
|
|
|
### Sample Request
|
|
|
|
```shell-session
|
|
$ curl \
|
|
--request PUT \
|
|
--data @payload.json \
|
|
http://127.0.0.1:8500/v1/agent/service/register?replace-existing-checks=true
|
|
```
|
|
|
|
## Deregister Service
|
|
|
|
This endpoint removes a service from the local agent. If the service does not
|
|
exist, no action is taken.
|
|
|
|
The agent will take care of deregistering the service with the catalog. If there
|
|
is an associated check, that is also deregistered.
|
|
|
|
| Method | Path | Produces |
|
|
| ------ | --------------------------------------- | ------------------ |
|
|
| `PUT` | `/agent/service/deregister/:service_id` | `application/json` |
|
|
|
|
The table below shows this endpoint's support for
|
|
[blocking queries](/api/features/blocking),
|
|
[consistency modes](/api/features/consistency),
|
|
[agent caching](/api/features/caching), and
|
|
[required ACLs](/api#authentication).
|
|
|
|
| Blocking Queries | Consistency Modes | Agent Caching | ACL Required |
|
|
| ---------------- | ----------------- | ------------- | --------------- |
|
|
| `NO` | `none` | `none` | `service:write` |
|
|
|
|
### Parameters
|
|
|
|
- `service_id` `(string: <required>)` - Specifies the ID of the service to
|
|
deregister. This is specified as part of the URL.
|
|
|
|
- `ns` `(string: "")` <EnterpriseAlert inline /> - Specifies the namespace in which
|
|
to deregister the service. This value can be specified as the `ns` URL query
|
|
parameter or the `X-Consul-Namespace` header. If not provided by either,
|
|
the namespace will be inherited from the request's ACL token or will default
|
|
to the `default` namespace. Added in Consul 1.7.0.
|
|
|
|
### Sample Request
|
|
|
|
```shell-session
|
|
$ curl \
|
|
--request PUT \
|
|
http://127.0.0.1:8500/v1/agent/service/deregister/my-service-id
|
|
```
|
|
|
|
## Enable Maintenance Mode
|
|
|
|
This endpoint places a given service into "maintenance mode". During maintenance
|
|
mode, the service will be marked as unavailable and will not be present in DNS
|
|
or API queries. This API call is idempotent. Maintenance mode is persistent and
|
|
will be automatically restored on agent restart.
|
|
|
|
| Method | Path | Produces |
|
|
| ------ | ---------------------------------------- | ------------------ |
|
|
| `PUT` | `/agent/service/maintenance/:service_id` | `application/json` |
|
|
|
|
The table below shows this endpoint's support for
|
|
[blocking queries](/api/features/blocking),
|
|
[consistency modes](/api/features/consistency),
|
|
[agent caching](/api/features/caching), and
|
|
[required ACLs](/api#authentication).
|
|
|
|
| Blocking Queries | Consistency Modes | Agent Caching | ACL Required |
|
|
| ---------------- | ----------------- | ------------- | --------------- |
|
|
| `NO` | `none` | `none` | `service:write` |
|
|
|
|
### Parameters
|
|
|
|
- `service_id` `(string: <required>)` - Specifies the ID of the service to put
|
|
in maintenance mode. This is specified as part of the URL.
|
|
|
|
- `enable` `(bool: <required>)` - Specifies whether to enable or disable
|
|
maintenance mode. This is specified as part of the URL as a query string
|
|
parameter.
|
|
|
|
- `ns` `(string: "")` <EnterpriseAlert inline /> - Specifies the namespace
|
|
of the service to place into maintenance mode. This value can be specified as
|
|
the `ns` URL query parameter or the `X-Consul-Namespace` header. If not provided
|
|
by either, the namespace will be inherited from the request's ACL token or will
|
|
default to the `default` namespace. Added in Consul 1.7.0.
|
|
|
|
- `reason` `(string: "")` - Specifies a text string explaining the reason for
|
|
placing the node into maintenance mode. This is simply to aid human operators.
|
|
If no reason is provided, a default value will be used instead. This is
|
|
specified as part of the URL as a query string parameter, and, as such, must
|
|
be URI-encoded.
|
|
|
|
### Sample Request
|
|
|
|
```shell-session
|
|
$ curl \
|
|
--request PUT \
|
|
http://127.0.0.1:8500/v1/agent/service/maintenance/my-service-id?enable=true&reason=For+the+docs
|
|
```
|