add kubespray to the XTesting as it provides newer version of kubenetes and can be...
[it/test.git] / XTesting / kubespray / docs / ingress_controller / ingress_nginx.md
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+# Installation Guide
+
+## Contents
+
+- [Prerequisite Generic Deployment Command](#prerequisite-generic-deployment-command)
+  - [Provider Specific Steps](#provider-specific-steps)
+    - [Docker for Mac](#docker-for-mac)
+    - [minikube](#minikube)
+    - [AWS](#aws)
+    - [GCE - GKE](#gce-gke)
+    - [Azure](#azure)
+    - [Bare-metal](#bare-metal)
+  - [Verify installation](#verify-installation)
+  - [Detect installed version](#detect-installed-version)
+- [Using Helm](#using-helm)
+
+## Prerequisite Generic Deployment Command
+
+!!! attention
+    The default configuration watches Ingress object from *all the namespaces*.
+    To change this behavior use the flag `--watch-namespace` to limit the scope to a particular namespace.
+
+!!! warning
+    If multiple Ingresses define different paths for the same host, the ingress controller will merge the definitions.
+
+!!! attention
+    If you're using GKE you need to initialize your user as a cluster-admin with the following command:
+
+```console
+kubectl create clusterrolebinding cluster-admin-binding \
+--clusterrole cluster-admin \
+--user $(gcloud config get-value account)
+```
+
+The following **Mandatory Command** is required for all deployments except for AWS. See below for the AWS version.
+
+```console
+kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v0.40.2/deploy/static/provider/cloud/deploy.yaml
+```
+
+### Provider Specific Steps
+
+There are cloud provider specific yaml files.
+
+#### Docker for Mac
+
+Kubernetes is available in Docker for Mac (from [version 18.06.0-ce](https://docs.docker.com/docker-for-mac/release-notes/#stable-releases-of-2018))
+
+First you need to [enable kubernetes](https://docs.docker.com/docker-for-mac/#kubernetes).
+
+Then you have to create a service:
+
+```console
+kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/static/provider/cloud-generic.yaml
+```
+
+#### minikube
+
+For standard usage:
+
+```console
+minikube addons enable ingress
+```
+
+For development:
+
+1. Disable the ingress addon:
+
+```console
+minikube addons disable ingress
+```
+
+1. Execute `make dev-env`
+1. Confirm the `nginx-ingress-controller` deployment exists:
+
+```console
+$ kubectl get pods -n ingress-nginx
+NAME                                       READY     STATUS    RESTARTS   AGE
+default-http-backend-66b447d9cf-rrlf9      1/1       Running   0          12s
+nginx-ingress-controller-fdcdcd6dd-vvpgs   1/1       Running   0          11s
+```
+
+#### AWS
+
+In AWS we use an Elastic Load Balancer (ELB) to expose the NGINX Ingress controller behind a Service of `Type=LoadBalancer`.
+Since Kubernetes v1.9.0 it is possible to use a classic load balancer (ELB) or network load balancer (NLB)
+Please check the [elastic load balancing AWS details page](https://aws.amazon.com/elasticloadbalancing/details/)
+
+##### Elastic Load Balancer - ELB
+
+This setup requires to choose in which layer (L4 or L7) we want to configure the Load Balancer:
+
+- [Layer 4](https://en.wikipedia.org/wiki/OSI_model#Layer_4:_Transport_Layer): Use an Network Load Balancer (NLB) with TCP as the listener protocol for ports 80 and 443.
+- [Layer 7](https://en.wikipedia.org/wiki/OSI_model#Layer_7:_Application_Layer): Use an Elastic Load Balancer (ELB) with HTTP as the listener protocol for port 80 and terminate TLS in the ELB
+
+For L4:
+
+```console
+kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/static/provider/aws/deploy.yaml
+```
+
+For L7:
+
+Change the value of `service.beta.kubernetes.io/aws-load-balancer-ssl-cert` in the file `provider/aws/deploy-tls-termination.yaml` replacing the dummy id with a valid one. The dummy value is `"arn:aws:acm:us-west-2:XXXXXXXX:certificate/XXXXXX-XXXXXXX-XXXXXXX-XXXXXXXX"`
+
+Check that no change is necessary with regards to the ELB idle timeout. In some scenarios, users may want to modify the ELB idle timeout, so please check the [ELB Idle Timeouts section](#elb-idle-timeouts) for additional information. If a change is required, users will need to update the value of `service.beta.kubernetes.io/aws-load-balancer-connection-idle-timeout` in `provider/aws/deploy-tls-termination.yaml`
+
+Then execute:
+
+```console
+kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/static/provider/aws/deploy-tls-termination.yaml
+```
+
+This example creates an ELB with just two listeners, one in port 80 and another in port 443
+
+![Listeners](https://github.com/kubernetes/ingress-nginx/raw/master/docs/images/elb-l7-listener.png)
+
+##### ELB Idle Timeouts
+
+In some scenarios users will need to modify the value of the ELB idle timeout.
+Users need to ensure the idle timeout is less than the [keepalive_timeout](http://nginx.org/en/docs/http/ngx_http_core_module.html#keepalive_timeout) that is configured for NGINX.
+By default NGINX `keepalive_timeout` is set to `75s`.
+
+The default ELB idle timeout will work for most scenarios, unless the NGINX [keepalive_timeout](http://nginx.org/en/docs/http/ngx_http_core_module.html#keepalive_timeout) has been modified,
+in which case `service.beta.kubernetes.io/aws-load-balancer-connection-idle-timeout` will need to be modified to ensure it is less than the `keepalive_timeout` the user has configured.
+
+_Please Note: An idle timeout of `3600s` is recommended when using WebSockets._
+
+More information with regards to idle timeouts for your Load Balancer can be found in the [official AWS documentation](https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/config-idle-timeout.html).
+
+##### Network Load Balancer (NLB)
+
+This type of load balancer is supported since v1.10.0 as an ALPHA feature.
+
+```console
+kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/static/provider/aws/service-nlb.yaml
+```
+
+#### GCE-GKE
+
+```console
+kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/static/provider/cloud-generic.yaml
+```
+
+**Important Note:** proxy protocol is not supported in GCE/GKE
+
+#### Azure
+
+```console
+kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/static/provider/cloud-generic.yaml
+```
+
+#### Bare-metal
+
+Using [NodePort](https://kubernetes.io/docs/concepts/services-networking/service/#type-nodeport):
+
+```console
+kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/static/provider/baremetal/service-nodeport.yaml
+```
+
+!!! tip
+    For extended notes regarding deployments on bare-metal, see [Bare-metal considerations](./baremetal.md).
+
+### Verify installation
+
+To check if the ingress controller pods have started, run the following command:
+
+```console
+kubectl get pods --all-namespaces -l app.kubernetes.io/name=ingress-nginx --watch
+```
+
+Once the operator pods are running, you can cancel the above command by typing `Ctrl+C`.
+Now, you are ready to create your first ingress.
+
+### Detect installed version
+
+To detect which version of the ingress controller is running, exec into the pod and run `nginx-ingress-controller version` command.
+
+```console
+POD_NAMESPACE=ingress-nginx
+POD_NAME=$(kubectl get pods -n $POD_NAMESPACE -l app.kubernetes.io/component=controller -o jsonpath='{.items[0].metadata.name}')
+
+kubectl exec -it $POD_NAME -n $POD_NAMESPACE -- /nginx-ingress-controller --version
+```
+
+## Using Helm
+
+NGINX Ingress controller can be installed via [Helm](https://helm.sh/) using the chart [ingress-nginx/ingress-nginx](https://kubernetes.github.io/ingress-nginx).
+Official documentation is [here](https://kubernetes.github.io/ingress-nginx/deploy/#using-helm)
+
+To install the chart with the release name `my-nginx`:
+
+```console
+helm repo add ingress-nginx https://kubernetes.github.io/ingress-nginx
+helm install my-nginx ingress-nginx/ingress-nginx
+```
+
+Detect installed version:
+
+```console
+POD_NAME=$(kubectl get pods -l app.kubernetes.io/name=ingress-nginx -o jsonpath='{.items[0].metadata.name}')
+kubectl exec -it $POD_NAME -- /nginx-ingress-controller --version
+```