Traefik Ingress Operator for Kubernetes
- By Canonical Observability
| Channel | Revision | Published | Runs on |
|---|---|---|---|
| latest/stable | 176 | 24 Apr 2024 | |
| latest/candidate | 177 | 24 Apr 2024 | |
| latest/beta | 180 | 24 Apr 2024 | |
| latest/edge | 184 | Today | |
| 1.0/stable | 164 | 16 Feb 2024 | |
| 1.0/candidate | 164 | 22 Nov 2023 | |
| 1.0/beta | 164 | 22 Nov 2023 | |
| 1.0/edge | 164 | 22 Nov 2023 |
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Platform:
charms.traefik_k8s.v2.ingress
-
- Last updated 27 Mar 2024
- Revision Library version 2.12
Interface Library for ingress.
This library wraps relation endpoints using the ingress interface
and provides a Python API for both requesting and providing per-application
ingress, with load-balancing occurring across all units.
Getting Started
To get started using the library, you just need to fetch the library using charmcraft.
cd some-charm
charmcraft fetch-lib charms.traefik_k8s.v2.ingress
In the metadata.yaml of the charm, add the following:
requires:
ingress:
interface: ingress
limit: 1
Then, to initialise the library:
from charms.traefik_k8s.v2.ingress import (IngressPerAppRequirer,
IngressPerAppReadyEvent, IngressPerAppRevokedEvent)
class SomeCharm(CharmBase):
def __init__(self, *args):
# ...
self.ingress = IngressPerAppRequirer(self, port=80)
# The following event is triggered when the ingress URL to be used
# by this deployment of the `SomeCharm` is ready (or changes).
self.framework.observe(
self.ingress.on.ready, self._on_ingress_ready
)
self.framework.observe(
self.ingress.on.revoked, self._on_ingress_revoked
)
def _on_ingress_ready(self, event: IngressPerAppReadyEvent):
logger.info("This app's ingress URL: %s", event.url)
def _on_ingress_revoked(self, event: IngressPerAppRevokedEvent):
logger.info("This app no longer has ingress")
Index
class IngressUrl
Description
Ingress url schema. None
class IngressProviderAppData
Description
Ingress application databag schema. None
class ProviderSchema
Description
Provider schema for Ingress. None
class IngressRequirerAppData
Description
Ingress requirer application databag model. None
Methods
IngressRequirerAppData. validate_scheme( cls , scheme )
Description
Validate scheme arg. None
IngressRequirerAppData. validate_port( cls , port )
Description
Validate port. None
class IngressRequirerUnitData
Description
Ingress requirer unit databag model. None
Methods
IngressRequirerUnitData. validate_host( cls , host )
Description
Validate host. None
IngressRequirerUnitData. validate_ip( cls , ip )
Description
Validate ip. None
class RequirerSchema
Description
Requirer schema for Ingress. None
class IngressError
Description
Base class for custom errors raised by this library. None
class NotReadyError
Description
Raised when a relation is not ready. None
class DataValidationError
Description
Raised when data validation fails on IPU relation data. None
class IngressPerAppDataProvidedEvent
Description
Event representing that ingress data has been provided for an app. None
class IngressPerAppDataRemovedEvent
Description
Event representing that ingress data has been removed for an app. None
class IngressPerAppProviderEvents
Description
Container for IPA Provider events. None
class IngressRequirerData
Description
Data exposed by the ingress requirer to the provider. None
class IngressPerAppProvider
Description
Implementation of the provider of ingress. None
Methods
IngressPerAppProvider. __init__( self , charm: CharmBase , relation_name: str )
Constructor for IngressPerAppProvider.
Arguments
The charm that is instantiating the instance.
The name of the relation endpoint to bind to (defaults to "ingress").
IngressPerAppProvider. wipe_ingress_data( self , relation: Relation )
Description
Clear ingress data from relation. None
IngressPerAppProvider. get_data( self , relation: Relation )
Description
Fetch the remote (requirer) app and units' databags. None
IngressPerAppProvider. is_ready( self , relation )
Description
The Provider is ready if the requirer has sent valid data. None
IngressPerAppProvider. publish_url( self , relation: Relation , url: str )
Description
Publish to the app databag the ingress url. None
IngressPerAppProvider. proxied_endpoints( self )
Returns the ingress settings provided to applications by this IngressPerAppProvider.
Description
For example, when this IngressPerAppProvider has provided the
http://foo.bar/my-model.my-app URL to the my-app application, the returned dictionary
will be:
{
"my-app": {
"url": "http://foo.bar/my-model.my-app"
}
}
class IngressPerAppReadyEvent
Description
Event representing that ingress for an app is ready. None
class IngressPerAppRevokedEvent
Description
Event representing that ingress for an app has been revoked. None
class IngressPerAppRequirerEvents
Description
Container for IPA Requirer events. None
class IngressPerAppRequirer
Description
Implementation of the requirer of the ingress relation. None
Methods
IngressPerAppRequirer. __init__( self , charm: CharmBase , relation_name: str )
Constructor for IngressRequirer.
Arguments
the charm that is instantiating the library.
the name of the relation endpoint to bind to (defaults to ingress);
relation must be of interface type ingress and have "limit: 1")
Hostname to be used by the ingress provider to address the requiring application; if unspecified, the default Kubernetes service name will be used.
Alternative addressing method other than host to be used by the ingress provider; if unspecified, binding address from juju network API will be used.
configure Traefik to strip the path prefix.
redirect incoming requests to HTTPS.
callable returning the scheme to use when constructing the ingress url. Or a string, if the scheme is known and stable at charm-init-time.
Description
The request args can be used to specify the ingress properties when the
instance is created. If any are set, at least port is required, and
they will be sent to the ingress provider as soon as it is available.
All request args must be given as keyword args.
IngressPerAppRequirer. is_ready( self )
Description
The Requirer is ready if the Provider has sent valid data. None
IngressPerAppRequirer. provide_ingress_requirements( self )
Publishes the data that Traefik needs to provide ingress.
Arguments
Scheme to be used; if unspecified, use the one used by init.
Hostname to be used by the ingress provider to address the requirer unit; if unspecified, FQDN will be used instead
Alternative addressing method other than host to be used by the ingress provider. if unspecified, binding address from juju network API will be used.
the port of the service (required)
IngressPerAppRequirer. relation( self )
Description
The established Relation instance, or None. None
IngressPerAppRequirer. url( self )
The full ingress URL to reach the current unit.
Description
Returns None if the URL isn't available yet.