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Split Consul and Consul Catalog documentation

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Ludovic Fernandez 2018-01-04 14:48:03 +01:00 committed by Traefiker
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commit 287fb78654
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98
docs/configuration/backends/consul.md
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@ -1,6 +1,4 @@
# Consul Backend
## Consul Key-Value backend
# Consul Key-Value backend
Træfik can be configured to use Consul as a backend configuration.
@ -61,97 +59,3 @@ prefix = "traefik"
To enable constraints see [backend-specific constraints section](/configuration/commons/#backend-specific).
Please refer to the [Key Value storage structure](/user-guide/kv-config/#key-value-storage-structure) section to get documentation on Traefik KV structure.
## Consul Catalog backend
Træfik can be configured to use service discovery catalog of Consul as a backend configuration.
```toml
################################################################
# Consul Catalog configuration backend
################################################################
# Enable Consul Catalog configuration backend.
[consulCatalog]
# Consul server endpoint.
#
# Required
# Default: "127.0.0.1:8500"
#
endpoint = "127.0.0.1:8500"
# Expose Consul catalog services by default in Traefik.
#
# Optional
# Default: true
#
exposedByDefault = false
# Default domain used.
#
# Optional
#
domain = "consul.localhost"
# Prefix for Consul catalog tags.
#
# Optional
# Default: "traefik"
#
prefix = "traefik"
# Default frontEnd Rule for Consul services.
#
# The format is a Go Template with:
# - ".ServiceName", ".Domain" and ".Attributes" available
# - "getTag(name, tags, defaultValue)", "hasTag(name, tags)" and "getAttribute(name, tags, defaultValue)" functions are available
# - "getAttribute(...)" function uses prefixed tag names based on "prefix" value
#
# Optional
# Default: "Host:{{.ServiceName}}.{{.Domain}}"
#
#frontEndRule = "Host:{{.ServiceName}}.{{Domain}}"
```
This backend will create routes matching on hostname based on the service name used in Consul.
To enable constraints see [backend-specific constraints section](/configuration/commons/#backend-specific).
### Tags
Additional settings can be defined using Consul Catalog tags.
| Tag | Description |
|-----------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `traefik.enable=false` | Disable this container in Træfik |
| `traefik.protocol=https` | Override the default `http` protocol |
| `traefik.backend.weight=10` | Assign this weight to the container |
| `traefik.backend.circuitbreaker=EXPR` | Create a [circuit breaker](/basics/#backends) to be used against the backend, ex: `NetworkErrorRatio() > 0.` |
| `traefik.backend.maxconn.amount=10` | Set a maximum number of connections to the backend. Must be used in conjunction with the below label to take effect. |
| `traefik.backend.maxconn.extractorfunc=client.ip` | Set the function to be used against the request to determine what to limit maximum connections to the backend by. Must be used in conjunction with the above label to take effect. |
| `traefik.frontend.rule=Host:test.traefik.io` | Override the default frontend rule (Default: `Host:{{.ServiceName}}.{{.Domain}}`). |
| `traefik.frontend.passHostHeader=true` | Forward client `Host` header to the backend. |
| `traefik.frontend.priority=10` | Override default frontend priority |
| `traefik.frontend.entryPoints=http,https` | Assign this frontend to entry points `http` and `https`. Overrides `defaultEntryPoints`. |
| `traefik.frontend.auth.basic=EXPR` | Sets basic authentication for that frontend in CSV format: `User:Hash,User:Hash` |
| `traefik.backend.loadbalancer=drr` | override the default `wrr` load balancer algorithm |
| `traefik.backend.loadbalancer.stickiness=true` | enable backend sticky sessions |
| `traefik.backend.loadbalancer.stickiness.cookieName=NAME` | Manually set the cookie name for sticky sessions |
| `traefik.backend.loadbalancer.sticky=true` | enable backend sticky sessions (DEPRECATED) |
### Examples
If you want that Træfik uses Consul tags correctly you need to defined them like that:
```json
traefik.enable=true
traefik.tags=api
traefik.tags=external
```
If the prefix defined in Træfik configuration is `bla`, tags need to be defined like that:
```json
bla.enable=true
bla.tags=api
bla.tags=external
```

93
docs/configuration/backends/consulcatalog.md Normal file
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@ -0,0 +1,93 @@
# Consul Catalog backend
Træfik can be configured to use service discovery catalog of Consul as a backend configuration.
```toml
################################################################
# Consul Catalog configuration backend
################################################################
# Enable Consul Catalog configuration backend.
[consulCatalog]
# Consul server endpoint.
#
# Required
# Default: "127.0.0.1:8500"
#
endpoint = "127.0.0.1:8500"
# Expose Consul catalog services by default in Traefik.
#
# Optional
# Default: true
#
exposedByDefault = false
# Default domain used.
#
# Optional
#
domain = "consul.localhost"
# Prefix for Consul catalog tags.
#
# Optional
# Default: "traefik"
#
prefix = "traefik"
# Default frontEnd Rule for Consul services.
#
# The format is a Go Template with:
# - ".ServiceName", ".Domain" and ".Attributes" available
# - "getTag(name, tags, defaultValue)", "hasTag(name, tags)" and "getAttribute(name, tags, defaultValue)" functions are available
# - "getAttribute(...)" function uses prefixed tag names based on "prefix" value
#
# Optional
# Default: "Host:{{.ServiceName}}.{{.Domain}}"
#
#frontEndRule = "Host:{{.ServiceName}}.{{.Domain}}"
```
This backend will create routes matching on hostname based on the service name used in Consul.
To enable constraints see [backend-specific constraints section](/configuration/commons/#backend-specific).
### Tags
Additional settings can be defined using Consul Catalog tags.
| Tag | Description |
|-----------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `traefik.enable=false` | Disable this container in Træfik |
| `traefik.protocol=https` | Override the default `http` protocol |
| `traefik.backend.weight=10` | Assign this weight to the container |
| `traefik.backend.circuitbreaker=EXPR` | Create a [circuit breaker](/basics/#backends) to be used against the backend, ex: `NetworkErrorRatio() > 0.` |
| `traefik.backend.maxconn.amount=10` | Set a maximum number of connections to the backend. Must be used in conjunction with the below label to take effect. |
| `traefik.backend.maxconn.extractorfunc=client.ip` | Set the function to be used against the request to determine what to limit maximum connections to the backend by. Must be used in conjunction with the above label to take effect. |
| `traefik.frontend.rule=Host:test.traefik.io` | Override the default frontend rule (Default: `Host:{{.ServiceName}}.{{.Domain}}`). |
| `traefik.frontend.passHostHeader=true` | Forward client `Host` header to the backend. |
| `traefik.frontend.priority=10` | Override default frontend priority |
| `traefik.frontend.entryPoints=http,https` | Assign this frontend to entry points `http` and `https`. Overrides `defaultEntryPoints`. |
| `traefik.frontend.auth.basic=EXPR` | Sets basic authentication for that frontend in CSV format: `User:Hash,User:Hash` |
| `traefik.backend.loadbalancer=drr` | override the default `wrr` load balancer algorithm |
| `traefik.backend.loadbalancer.stickiness=true` | enable backend sticky sessions |
| `traefik.backend.loadbalancer.stickiness.cookieName=NAME` | Manually set the cookie name for sticky sessions |
| `traefik.backend.loadbalancer.sticky=true` | enable backend sticky sessions (DEPRECATED) |
### Examples
If you want that Træfik uses Consul tags correctly you need to defined them like that:
```json
traefik.enable=true
traefik.tags=api
traefik.tags=external
```
If the prefix defined in Træfik configuration is `bla`, tags need to be defined like that:
```json
bla.enable=true
bla.tags=api
bla.tags=external
```

13
docs/user-guide/kv-config.md
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@ -111,7 +111,7 @@ And there, the same global configuration in the Key-value Store (using `prefix =
| `/traefik/entrypoints/https/tls/certificates/0/keyfile` | `integration/fixtures/https/snitest.com.key` |
| `/traefik/entrypoints/https/tls/certificates/1/certfile` | `--BEGIN CERTIFICATE--<cert file content>--END CERTIFICATE--` |
| `/traefik/entrypoints/https/tls/certificates/1/keyfile` | `--BEGIN CERTIFICATE--<key file content>--END CERTIFICATE--` |
| `/traefik/entrypoints/other-https/address` | `:4443`
| `/traefik/entrypoints/other-https/address` | `:4443` |
| `/traefik/consul/endpoint` | `127.0.0.1:8500` |
| `/traefik/consul/watch` | `true` |
| `/traefik/consul/prefix` | `traefik` |
@ -341,9 +341,10 @@ And there, the same dynamic configuration in a KV Store (using `prefix = "traefi
| Key | Value |
|----------------------------------------------------|-----------------------|
| `/traefik/tlsconfiguration/2/entrypoints` | `https,other-https` |
| `/traefik/tlsconfiguration/2/entrypoints` | `https,other-https` |
| `/traefik/tlsconfiguration/2/certificate/certfile` | `<cert file content>` |
| `/traefik/tlsconfiguration/2/certificate/certfile` | `<key file content>` |
### Atomic configuration changes
Træfik can watch the backends/frontends configuration changes and generate its configuration automatically.
@ -378,9 +379,9 @@ Here, although the `/traefik_configurations/2/...` keys have been set, the old c
| `/traefik_configurations/1/backends/backend1/servers/server1/url` | `http://172.17.0.2:80` |
| `/traefik_configurations/1/backends/backend1/servers/server1/weight` | `10` |
| `/traefik_configurations/2/backends/backend1/servers/server1/url` | `http://172.17.0.2:80` |
| `/traefik_configurations/2/backends/backend1/servers/server1/weight` | `5` |
| `/traefik_configurations/2/backends/backend1/servers/server1/weight` | `5` |
| `/traefik_configurations/2/backends/backend1/servers/server2/url` | `http://172.17.0.3:80` |
| `/traefik_configurations/2/backends/backend1/servers/server2/weight` | `5` |
| `/traefik_configurations/2/backends/backend1/servers/server2/weight` | `5` |
Once the `/traefik/alias` key is updated, the new `/traefik_configurations/2` configuration becomes active atomically.
@ -392,9 +393,9 @@ Here, we have a 50% balance between the `http://172.17.0.3:80` and the `http://1
| `/traefik_configurations/1/backends/backend1/servers/server1/url` | `http://172.17.0.2:80` |
| `/traefik_configurations/1/backends/backend1/servers/server1/weight` | `10` |
| `/traefik_configurations/2/backends/backend1/servers/server1/url` | `http://172.17.0.3:80` |
| `/traefik_configurations/2/backends/backend1/servers/server1/weight` | `5` |
| `/traefik_configurations/2/backends/backend1/servers/server1/weight` | `5` |
| `/traefik_configurations/2/backends/backend1/servers/server2/url` | `http://172.17.0.4:80` |
| `/traefik_configurations/2/backends/backend1/servers/server2/weight` | `5` |
| `/traefik_configurations/2/backends/backend1/servers/server2/weight` | `5` |
!!! note
Træfik *will not watch for key changes in the `/traefik_configurations` prefix*. It will only watch for changes in the `/traefik/alias`.

1
mkdocs.yml
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@ -71,6 +71,7 @@ pages:
- 'Backend: Web': 'configuration/backends/web.md'
- 'Backend: BoltDB': 'configuration/backends/boltdb.md'
- 'Backend: Consul': 'configuration/backends/consul.md'
- 'Backend: Consul Catalog': 'configuration/backends/consulcatalog.md'
- 'Backend: Docker': 'configuration/backends/docker.md'
- 'Backend: DynamoDB': 'configuration/backends/dynamodb.md'
- 'Backend: ECS': 'configuration/backends/ecs.md'