187 lines
6.5 KiB
Markdown
187 lines
6.5 KiB
Markdown
# Installation Guide
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## Contents
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- [Prerequisite Generic Deployment Command](#prerequisite-generic-deployment-command)
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- [Provider Specific Steps](#provider-specific-steps)
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- [Docker for Mac](#docker-for-mac)
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- [minikube](#minikube)
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- [AWS](#aws)
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- [GCE - GKE](#gce-gke)
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- [Azure](#azure)
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- [Bare-metal](#bare-metal)
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- [Verify installation](#verify-installation)
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- [Detect installed version](#detect-installed-version)
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- [Using Helm](#using-helm)
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## Prerequisite Generic Deployment Command
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!!! attention
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The default configuration watches Ingress object from *all the namespaces*.
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To change this behavior use the flag `--watch-namespace` to limit the scope to a particular namespace.
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!!! warning
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If multiple Ingresses define different paths for the same host, the ingress controller will merge the definitions.
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!!! attention
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If you're using GKE you need to initialize your user as a cluster-admin with the following command:
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```console
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kubectl create clusterrolebinding cluster-admin-binding \
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--clusterrole cluster-admin \
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--user $(gcloud config get-value account)
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```
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### Provider Specific Steps
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There are cloud provider specific yaml files.
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#### Docker for Mac
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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))
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[enable]: https://docs.docker.com/docker-for-mac/#kubernetes
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Create a service
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```console
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kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/static/provider/cloud/deploy.yaml
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```
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#### minikube
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For standard usage:
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```console
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minikube addons enable ingress
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```
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For development:
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1. Disable the ingress addon:
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```console
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minikube addons disable ingress
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```
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2. Execute `make dev-env`
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3. Confirm the `nginx-ingress-controller` deployment exists:
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```console
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$ kubectl get pods -n ingress-nginx
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NAME READY STATUS RESTARTS AGE
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nginx-ingress-controller-fdcdcd6dd-vvpgs 1/1 Running 0 11s
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```
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#### AWS
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In AWS we use a Network load balancer (NLB) to expose the NGINX Ingress controller behind a Service of `Type=LoadBalancer`.
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##### Network Load Balancer (NLB)
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```console
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kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/static/provider/aws/deploy.yaml
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```
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##### TLS termination in the Load Balancer (ELB)
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In some scenarios is not possible to terminate TLS in the ingress controller but in the Load Balancer.
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For this purpose we provide a template:
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1. Download [deploy-tls-termination.yaml](https://raw.githubusercontent.com/kubernetes/ingress-nginx/204739fb6650c48fd41dc9505f8fd9ef6bc768e1/deploy/static/provider/aws/deploy-tls-termination.yaml)
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```console
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wget https://raw.githubusercontent.com/kubernetes/ingress-nginx/204739fb6650c48fd41dc9505f8fd9ef6bc768e1/deploy/static/provider/aws/deploy-tls-termination.yaml
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```
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2. Change:
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- Set the VPC CIDR: `proxy-real-ip-cidr: XXX.XXX.XXX/XX`
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- Change the AWS Certificate Manager (ACM) ID `service.beta.kubernetes.io/aws-load-balancer-ssl-cert: arn:aws:acm:us-west-2:XXXXXXXX:certificate/XXXXXX-XXXXXXX-XXXXXXX-XXXXXXXX`
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3. Deploy the manifests:
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```console
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kubectl apply -f deploy-tls-termination.yaml
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```
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##### NLB Idle Timeouts
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In some scenarios users will need to modify the value of the NLB 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.
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By default NGINX `keepalive_timeout` is set to `75s`.
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The default NLB 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.
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_Please Note: An idle timeout of `3600s` is recommended when using WebSockets._
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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/network/network-load-balancers.html#connection-idle-timeout).
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#### GCE-GKE
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```console
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kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/static/provider/cloud/deploy.yaml
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```
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**Important Note:** proxy protocol is not supported in GCE/GKE
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#### Azure
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```console
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kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/static/provider/cloud/deploy.yaml
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```
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#### Bare-metal
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Using [NodePort](https://kubernetes.io/docs/concepts/services-networking/service/#type-nodeport):
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```console
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kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/static/provider/baremetal/deploy.yaml
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```
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!!! tip
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For extended notes regarding deployments on bare-metal, see [Bare-metal considerations](./baremetal.md).
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### Verify installation
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To check if the ingress controller pods have started, run the following command:
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```console
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kubectl get pods --all-namespaces -l app.kubernetes.io/name=ingress-nginx --watch
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```
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Once the operator pods are running, you can cancel the above command by typing `Ctrl+C`.
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Now, you are ready to create your first ingress.
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### Detect installed version
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To detect which version of the ingress controller is running, exec into the pod and run `nginx-ingress-controller version` command.
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```console
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POD_NAMESPACE=ingress-nginx
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POD_NAME=$(kubectl get pods -n $POD_NAMESPACE -l app.kubernetes.io/name=ingress-nginx -o jsonpath='{.items[0].metadata.name}')
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kubectl exec -it $POD_NAME -n $POD_NAMESPACE -- /nginx-ingress-controller --version
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```
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## Using Helm
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NGINX Ingress controller can be installed via [Helm](https://helm.sh/) using the chart from the project repository.
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To install the chart with the release name `ingress-nginx`:
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```console
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helm repo add k8s-ingress-nginx https://kubernetes.github.io/ingress-nginx/
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helm install ingress-nginx k8s-ingress-nginx
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```
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If you are using [Helm 2](https://v2.helm.sh/) then specify release name using `--name` flag
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```console
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helm repo add k8s-ingress-nginx https://kubernetes.github.io/ingress-nginx/
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helm install k8s-ingress-nginx --name ingress-nginx
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```
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### Detect installed version:
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```console
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POD_NAME=$(kubectl get pods -l app.kubernetes.io/name=ingress-nginx -o jsonpath='{.items[0].metadata.name}')
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kubectl exec -it $POD_NAME -- /nginx-ingress-controller --version
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```
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