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Cristian Calin
2021-06-01 17:30:27 +03:00
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parent 4674b03661
commit 6a2ea94b39
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roles/kubernetes-apps/ingress_controller/ambassador/README.md
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# Installation Guide
- [Installation Guide](#installation-guide)
- [Ambassador](#ambassador)
- [Ambassador Operator](#ambassador-operator)
- [Configuration](#configuration)
- [Ingress annotations](#ingress-annotations)
## Ambassador
The Ambassador API Gateway provides all the functionality of a traditional ingress controller
(e.g., path-based routing) while exposing many additional capabilities such as authentication,
URL rewriting, CORS, rate limiting, and automatic metrics collection.
## Ambassador Operator
This addon deploys the Ambassador Operator, which in turn will install Ambassador in
a kubespray cluster.
The Ambassador Operator is a Kubernetes Operator that controls Ambassador's complete lifecycle
in your cluster, automating many of the repeatable tasks you would otherwise have to perform
yourself. Once installed, the Operator will complete installations and seamlessly upgrade to new
versions of Ambassador as they become available.
## Configuration
- `ingress_ambassador_namespace` (default `ambassador`): namespace for installing Ambassador.
- `ingress_ambassador_update_window` (default `0 0 * * SUN`): _crontab_-like expression
for specifying when the Operator should try to update the Ambassador API Gateway.
- `ingress_ambassador_version` (default: `*`): SemVer rule for versions allowed for
installation/updates.
- `ingress_ambassador_multi_namespaces` (default `false`): By default, Ambassador will only
watch the `ingress_ambassador_namespace` namespace for `AmbassadorInstallation` CRD resources.
When set to `true`, this value will tell the Ambassador Operator to watch **all** namespaces
for CRDs. If you want to run multiple Ambassador ingress instances, set this to `true`.
## Ingress annotations
The Ambassador API Gateway will automatically load balance `Ingress` resources
that include the annotation `kubernetes.io/ingress.class=ambassador`. All the other
resources will be just ignored.