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added info for aws helm install (#11410)

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Co-authored-by: longwuyuan <longwuyuan@gmail.com>
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@ -6,10 +6,10 @@ There are multiple ways to install the Ingress-Nginx Controller:
- with `kubectl apply`, using YAML manifests; - with `kubectl apply`, using YAML manifests;
- with specific addons (e.g. for [minikube](#minikube) or [MicroK8s](#microk8s)). - with specific addons (e.g. for [minikube](#minikube) or [MicroK8s](#microk8s)).
On most Kubernetes clusters, the ingress controller will work without requiring any extra configuration. If you want to On most Kubernetes clusters, the ingress controller will work without requiring any extra configuration. If you want to
get started as fast as possible, you can check the [quick start](#quick-start) instructions. However, in many get started as fast as possible, you can check the [quick start](#quick-start) instructions. However, in many
environments, you can improve the performance or get better logs by enabling extra features. We recommend that you environments, you can improve the performance or get better logs by enabling extra features. We recommend that you
check the [environment-specific instructions](#environment-specific-instructions) for details about optimizing the check the [environment-specific instructions](#environment-specific-instructions) for details about optimizing the
ingress controller for your particular environment or cloud provider. ingress controller for your particular environment or cloud provider.
## Contents ## Contents
@ -72,7 +72,7 @@ kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/cont
``` ```
!!! info !!! info
The YAML manifest in the command above was generated with `helm template`, so you will end up with almost the same The YAML manifest in the command above was generated with `helm template`, so you will end up with almost the same
resources as if you had used Helm to install the controller. resources as if you had used Helm to install the controller.
!!! attention !!! attention
@ -83,6 +83,7 @@ kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/cont
### Firewall configuration ### Firewall configuration
To check which ports are used by your installation of ingress-nginx, look at the output of `kubectl -n ingress-nginx get pod -o yaml`. In general, you need: To check which ports are used by your installation of ingress-nginx, look at the output of `kubectl -n ingress-nginx get pod -o yaml`. In general, you need:
- Port 8443 open between all hosts on which the kubernetes nodes are running. This is used for the ingress-nginx [admission controller](https://kubernetes.io/docs/reference/access-authn-authz/admission-controllers/). - Port 8443 open between all hosts on which the kubernetes nodes are running. This is used for the ingress-nginx [admission controller](https://kubernetes.io/docs/reference/access-authn-authz/admission-controllers/).
- Port 80 (for HTTP) and/or 443 (for HTTPS) open to the public on the kubernetes nodes to which the DNS of your apps are pointing. - Port 80 (for HTTP) and/or 443 (for HTTPS) open to the public on the kubernetes nodes to which the DNS of your apps are pointing.
@ -94,7 +95,7 @@ A few pods should start in the `ingress-nginx` namespace:
kubectl get pods --namespace=ingress-nginx kubectl get pods --namespace=ingress-nginx
``` ```
After a while, they should all be running. The following command will wait for the ingress controller pod to be up, After a while, they should all be running. The following command will wait for the ingress controller pod to be up,
running, and ready: running, and ready:
```console ```console
@ -104,7 +105,6 @@ kubectl wait --namespace ingress-nginx \
--timeout=120s --timeout=120s
``` ```
### Local testing ### Local testing
Let's create a simple web server and the associated service: Let's create a simple web server and the associated service:
@ -135,6 +135,7 @@ kubectl port-forward --namespace=ingress-nginx service/ingress-nginx-controller
[This issue](https://github.com/kubernetes/ingress-nginx/issues/10014#issuecomment-1567791549described) shows a typical DNS problem and its solution. [This issue](https://github.com/kubernetes/ingress-nginx/issues/10014#issuecomment-1567791549described) shows a typical DNS problem and its solution.
At this point, you can access your deployment using curl ; At this point, you can access your deployment using curl ;
```console ```console
curl --resolve demo.localdev.me:8080:127.0.0.1 http://demo.localdev.me:8080 curl --resolve demo.localdev.me:8080:127.0.0.1 http://demo.localdev.me:8080
``` ```
@ -143,7 +144,7 @@ You should see a HTML response containing text like **"It works!"**.
### Online testing ### Online testing
If your Kubernetes cluster is a "real" cluster that supports services of type `LoadBalancer`, it will have allocated an If your Kubernetes cluster is a "real" cluster that supports services of type `LoadBalancer`, it will have allocated an
external IP address or FQDN to the ingress controller. external IP address or FQDN to the ingress controller.
You can see that IP address or FQDN with the following command: You can see that IP address or FQDN with the following command:
@ -152,10 +153,10 @@ You can see that IP address or FQDN with the following command:
kubectl get service ingress-nginx-controller --namespace=ingress-nginx kubectl get service ingress-nginx-controller --namespace=ingress-nginx
``` ```
It will be the `EXTERNAL-IP` field. If that field shows `<pending>`, this means that your Kubernetes cluster wasn't It will be the `EXTERNAL-IP` field. If that field shows `<pending>`, this means that your Kubernetes cluster wasn't
able to provision the load balancer (generally, this is because it doesn't support services of type `LoadBalancer`). able to provision the load balancer (generally, this is because it doesn't support services of type `LoadBalancer`).
Once you have the external IP address (or FQDN), set up a DNS record pointing to it. Then you can create an ingress Once you have the external IP address (or FQDN), set up a DNS record pointing to it. Then you can create an ingress
resource. The following example assumes that you have set up a DNS record for `www.demo.io`: resource. The following example assumes that you have set up a DNS record for `www.demo.io`:
```console ```console
@ -164,13 +165,13 @@ kubectl create ingress demo --class=nginx \
``` ```
Alternatively, the above command can be rewritten as follows for the ```--rule``` command and below. Alternatively, the above command can be rewritten as follows for the ```--rule``` command and below.
```console ```console
kubectl create ingress demo --class=nginx \ kubectl create ingress demo --class=nginx \
--rule www.demo.io/=demo:80 --rule www.demo.io/=demo:80
``` ```
You should then be able to see the "It works!" page when you connect to <http://www.demo.io/>. Congratulations,
You should then be able to see the "It works!" page when you connect to http://www.demo.io/. Congratulations,
you are serving a public website hosted on a Kubernetes cluster! 🎉 you are serving a public website hosted on a Kubernetes cluster! 🎉
## Environment-specific instructions ## Environment-specific instructions
@ -202,19 +203,19 @@ Kubernetes is available in Docker Desktop:
- Mac, from [version 18.06.0-ce](https://docs.docker.com/docker-for-mac/release-notes/#stable-releases-of-2018) - Mac, from [version 18.06.0-ce](https://docs.docker.com/docker-for-mac/release-notes/#stable-releases-of-2018)
- Windows, from [version 18.06.0-ce](https://docs.docker.com/docker-for-windows/release-notes/#docker-community-edition-18060-ce-win70-2018-07-25) - Windows, from [version 18.06.0-ce](https://docs.docker.com/docker-for-windows/release-notes/#docker-community-edition-18060-ce-win70-2018-07-25)
First, make sure that Kubernetes is enabled in the Docker settings. The command `kubectl get nodes` should show a First, make sure that Kubernetes is enabled in the Docker settings. The command `kubectl get nodes` should show a
single node called `docker-desktop`. single node called `docker-desktop`.
The ingress controller can be installed on Docker Desktop using the default [quick start](#quick-start) instructions. The ingress controller can be installed on Docker Desktop using the default [quick start](#quick-start) instructions.
On most systems, if you don't have any other service of type `LoadBalancer` bound to port 80, the ingress controller On most systems, if you don't have any other service of type `LoadBalancer` bound to port 80, the ingress controller
will be assigned the `EXTERNAL-IP` of `localhost`, which means that it will be reachable on localhost:80. If that will be assigned the `EXTERNAL-IP` of `localhost`, which means that it will be reachable on localhost:80. If that
doesn't work, you might have to fall back to the `kubectl port-forward` method described in the doesn't work, you might have to fall back to the `kubectl port-forward` method described in the
[local testing section](#local-testing). [local testing section](#local-testing).
#### Rancher Desktop #### Rancher Desktop
Rancher Desktop provides Kubernetes and Container Management on the desktop. Kubernetes is enabled by default in Rancher Desktop. Rancher Desktop provides Kubernetes and Container Management on the desktop. Kubernetes is enabled by default in Rancher Desktop.
Rancher Desktop uses K3s under the hood, which in turn uses Traefik as the default ingress controller for the Kubernetes cluster. To use Ingress-Nginx Controller in place of the default Traefik, disable Traefik from Preference > Kubernetes menu. Rancher Desktop uses K3s under the hood, which in turn uses Traefik as the default ingress controller for the Kubernetes cluster. To use Ingress-Nginx Controller in place of the default Traefik, disable Traefik from Preference > Kubernetes menu.
@ -222,18 +223,18 @@ Once traefik is disabled, the Ingress-Nginx Controller can be installed on Ranch
### Cloud deployments ### Cloud deployments
If the load balancers of your cloud provider do active healthchecks on their backends (most do), you can change the If the load balancers of your cloud provider do active healthchecks on their backends (most do), you can change the
`externalTrafficPolicy` of the ingress controller Service to `Local` (instead of the default `Cluster`) to save an `externalTrafficPolicy` of the ingress controller Service to `Local` (instead of the default `Cluster`) to save an
extra hop in some cases. If you're installing with Helm, this can be done by adding extra hop in some cases. If you're installing with Helm, this can be done by adding
`--set controller.service.externalTrafficPolicy=Local` to the `helm install` or `helm upgrade` command. `--set controller.service.externalTrafficPolicy=Local` to the `helm install` or `helm upgrade` command.
Furthermore, if the load balancers of your cloud provider support the PROXY protocol, you can enable it, and it will Furthermore, if the load balancers of your cloud provider support the PROXY protocol, you can enable it, and it will
let the ingress controller see the real IP address of the clients. Otherwise, it will generally see the IP address of let the ingress controller see the real IP address of the clients. Otherwise, it will generally see the IP address of
the upstream load balancer. This must be done both in the ingress controller the upstream load balancer. This must be done both in the ingress controller
(with e.g. `--set controller.config.use-proxy-protocol=true`) and in the cloud provider's load balancer configuration (with e.g. `--set controller.config.use-proxy-protocol=true`) and in the cloud provider's load balancer configuration
to function correctly. to function correctly.
In the following sections, we provide YAML manifests that enable these options when possible, using the specific In the following sections, we provide YAML manifests that enable these options when possible, using the specific
options of various cloud providers. options of various cloud providers.
#### AWS #### AWS
@ -242,10 +243,22 @@ In AWS, we use a Network load balancer (NLB) to expose the Ingress-Nginx Control
!!! info !!! info
The provided templates illustrate the setup for legacy in-tree service load balancer for AWS NLB. The provided templates illustrate the setup for legacy in-tree service load balancer for AWS NLB.
AWS provides the documentation on how to use AWS provides the documentation on how to use
[Network load balancing on Amazon EKS](https://docs.aws.amazon.com/eks/latest/userguide/network-load-balancing.html) [Network load balancing on Amazon EKS](https://docs.aws.amazon.com/eks/latest/userguide/network-load-balancing.html)
with [AWS Load Balancer Controller](https://github.com/kubernetes-sigs/aws-load-balancer-controller). with [AWS Load Balancer Controller](https://github.com/kubernetes-sigs/aws-load-balancer-controller).
!!! helm install on AWS
There have been too many attempts at using helm to install the controller on AWS recently.
The ingress-nginx-controller helm-chart is generic and not aimed at installing on AWS on any other infra provider.
There are annotations and configurations that are applicable only to AWS.
Please run `helm template` and compare with the static yaml manifests you see below.
A user is expected to use annotations for
(a) internal/external
(b) type - nlb
(c) sqcurity-groups
(d) and other such requirements
during their ``helm install`` process.
##### Network Load Balancer (NLB) ##### Network Load Balancer (NLB)
```console ```console
@ -254,7 +267,7 @@ kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/cont
##### TLS termination in AWS Load Balancer (NLB) ##### TLS termination in AWS Load Balancer (NLB)
By default, TLS is terminated in the ingress controller. But it is also possible to terminate TLS in the Load Balancer. By default, TLS is terminated in the ingress controller. But it is also possible to terminate TLS in the Load Balancer.
This section explains how to do that on AWS using an NLB. This section explains how to do that on AWS using an NLB.
1. Download the [deploy.yaml](https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v1.10.1/deploy/static/provider/aws/nlb-with-tls-termination/deploy.yaml) template 1. Download the [deploy.yaml](https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v1.10.1/deploy/static/provider/aws/nlb-with-tls-termination/deploy.yaml) template
@ -264,32 +277,35 @@ This section explains how to do that on AWS using an NLB.
``` ```
2. Edit the file and change the VPC CIDR in use for the Kubernetes cluster: 2. Edit the file and change the VPC CIDR in use for the Kubernetes cluster:
``` ```
proxy-real-ip-cidr: XXX.XXX.XXX/XX proxy-real-ip-cidr: XXX.XXX.XXX/XX
``` ```
3. Change the AWS Certificate Manager (ACM) ID as well: 3. Change the AWS Certificate Manager (ACM) ID as well:
``` ```
arn:aws:acm:us-west-2:XXXXXXXX:certificate/XXXXXX-XXXXXXX-XXXXXXX-XXXXXXXX arn:aws:acm:us-west-2:XXXXXXXX:certificate/XXXXXX-XXXXXXX-XXXXXXX-XXXXXXXX
``` ```
4. Deploy the manifest: 4. Deploy the manifest:
```console ```console
kubectl apply -f deploy.yaml kubectl apply -f deploy.yaml
``` ```
##### NLB Idle Timeouts ##### NLB Idle Timeouts
Idle timeout value for TCP flows is 350 seconds and Idle timeout value for TCP flows is 350 seconds and
[cannot be modified](https://docs.aws.amazon.com/elasticloadbalancing/latest/network/network-load-balancers.html#connection-idle-timeout). [cannot be modified](https://docs.aws.amazon.com/elasticloadbalancing/latest/network/network-load-balancers.html#connection-idle-timeout).
For this reason, you need to ensure the For this reason, you need to ensure the
[keepalive_timeout](https://nginx.org/en/docs/http/ngx_http_core_module.html#keepalive_timeout) [keepalive_timeout](https://nginx.org/en/docs/http/ngx_http_core_module.html#keepalive_timeout)
value is configured less than 350 seconds to work as expected. value is configured less than 350 seconds to work as expected.
By default, NGINX `keepalive_timeout` is set to `75s`. By default, NGINX `keepalive_timeout` is set to `75s`.
More information with regard to timeouts can be found in the More information with regard to timeouts can be found in the
[official AWS documentation](https://docs.aws.amazon.com/elasticloadbalancing/latest/network/network-load-balancers.html#connection-idle-timeout) [official AWS documentation](https://docs.aws.amazon.com/elasticloadbalancing/latest/network/network-load-balancers.html#connection-idle-timeout)
#### GCE-GKE #### GCE-GKE
@ -304,15 +320,14 @@ kubectl create clusterrolebinding cluster-admin-binding \
Then, the ingress controller can be installed like this: Then, the ingress controller can be installed like this:
```console ```console
kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v1.10.1/deploy/static/provider/cloud/deploy.yaml kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v1.10.1/deploy/static/provider/cloud/deploy.yaml
``` ```
!!! warning !!! warning
For private clusters, you will need to either add a firewall rule that allows master nodes access to For private clusters, you will need to either add a firewall rule that allows master nodes access to
port `8443/tcp` on worker nodes, or change the existing rule that allows access to port `80/tcp`, `443/tcp` and port `8443/tcp` on worker nodes, or change the existing rule that allows access to port `80/tcp`, `443/tcp` and
`10254/tcp` to also allow access to port `8443/tcp`. More information can be found in the `10254/tcp` to also allow access to port `8443/tcp`. More information can be found in the
[Official GCP Documentation](https://cloud.google.com/load-balancing/docs/tcp/setting-up-tcp#config-hc-firewall). [Official GCP Documentation](https://cloud.google.com/load-balancing/docs/tcp/setting-up-tcp#config-hc-firewall).
See the [GKE documentation](https://cloud.google.com/kubernetes-engine/docs/how-to/private-clusters#add_firewall_rules) See the [GKE documentation](https://cloud.google.com/kubernetes-engine/docs/how-to/private-clusters#add_firewall_rules)
@ -333,8 +348,8 @@ More information with regard to Azure annotations for ingress controller can be
```console ```console
kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v1.10.1/deploy/static/provider/do/deploy.yaml kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v1.10.1/deploy/static/provider/do/deploy.yaml
``` ```
- By default the service object of the ingress-nginx-controller for Digital-Ocean, only configures one annotation. Its this one `service.beta.kubernetes.io/do-loadbalancer-enable-proxy-protocol: "true"`. While this makes the service functional, it was reported that the Digital-Ocean LoadBalancer graphs shows `no data`, unless a few other annotations are also configured. Some of these other annotations require values that can not be generic and hence not forced in a out-of-the-box installation. These annotations and a discussion on them is well documented in [this issue](https://github.com/kubernetes/ingress-nginx/issues/8965). Please refer to the issue to add annotations, with values specific to user, to get graphs of the DO-LB populated with data.
- By default the service object of the ingress-nginx-controller for Digital-Ocean, only configures one annotation. Its this one `service.beta.kubernetes.io/do-loadbalancer-enable-proxy-protocol: "true"`. While this makes the service functional, it was reported that the Digital-Ocean LoadBalancer graphs shows `no data`, unless a few other annotations are also configured. Some of these other annotations require values that can not be generic and hence not forced in a out-of-the-box installation. These annotations and a discussion on them is well documented in [this issue](https://github.com/kubernetes/ingress-nginx/issues/8965). Please refer to the issue to add annotations, with values specific to user, to get graphs of the DO-LB populated with data.
#### Scaleway #### Scaleway
@ -348,7 +363,7 @@ kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/cont
kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/main/deploy/static/provider/exoscale/deploy.yaml kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/main/deploy/static/provider/exoscale/deploy.yaml
``` ```
The full list of annotations supported by Exoscale is available in the Exoscale Cloud Controller Manager The full list of annotations supported by Exoscale is available in the Exoscale Cloud Controller Manager
[documentation](https://github.com/exoscale/exoscale-cloud-controller-manager/blob/master/docs/service-loadbalancer.md). [documentation](https://github.com/exoscale/exoscale-cloud-controller-manager/blob/master/docs/service-loadbalancer.md).
#### Oracle Cloud Infrastructure #### Oracle Cloud Infrastructure
@ -357,8 +372,8 @@ The full list of annotations supported by Exoscale is available in the Exoscale
kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v1.10.1/deploy/static/provider/cloud/deploy.yaml kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v1.10.1/deploy/static/provider/cloud/deploy.yaml
``` ```
A A
[complete list of available annotations for Oracle Cloud Infrastructure](https://github.com/oracle/oci-cloud-controller-manager/blob/master/docs/load-balancer-annotations.md) [complete list of available annotations for Oracle Cloud Infrastructure](https://github.com/oracle/oci-cloud-controller-manager/blob/master/docs/load-balancer-annotations.md)
can be found in the [OCI Cloud Controller Manager](https://github.com/oracle/oci-cloud-controller-manager) documentation. can be found in the [OCI Cloud Controller Manager](https://github.com/oracle/oci-cloud-controller-manager) documentation.
#### OVHcloud #### OVHcloud
@ -373,11 +388,11 @@ You can find the [complete tutorial](https://docs.ovh.com/gb/en/kubernetes/insta
### Bare metal clusters ### Bare metal clusters
This section is applicable to Kubernetes clusters deployed on bare metal servers, as well as "raw" VMs where Kubernetes This section is applicable to Kubernetes clusters deployed on bare metal servers, as well as "raw" VMs where Kubernetes
was installed manually, using generic Linux distros (like CentOS, Ubuntu...) was installed manually, using generic Linux distros (like CentOS, Ubuntu...)
For quick testing, you can use a For quick testing, you can use a
[NodePort](https://kubernetes.io/docs/concepts/services-networking/service/#type-nodeport). [NodePort](https://kubernetes.io/docs/concepts/services-networking/service/#type-nodeport).
This should work on almost every cluster, but it will typically use a port in the range 30000-32767. This should work on almost every cluster, but it will typically use a port in the range 30000-32767.
```console ```console
@ -401,20 +416,20 @@ kubectl exec $POD_NAME -n $POD_NAMESPACE -- /nginx-ingress-controller --version
### Scope ### Scope
By default, the controller watches Ingress objects from all namespaces. If you want to change this behavior, By default, the controller watches Ingress objects from all namespaces. If you want to change this behavior,
use the flag `--watch-namespace` or check the Helm chart value `controller.scope` to limit the controller to a single use the flag `--watch-namespace` or check the Helm chart value `controller.scope` to limit the controller to a single
namespace. namespace.
See also See also
[“How to easily install multiple instances of the Ingress NGINX controller in the same cluster”](https://kubernetes.github.io/ingress-nginx/#how-to-easily-install-multiple-instances-of-the-ingress-nginx-controller-in-the-same-cluster) [“How to easily install multiple instances of the Ingress NGINX controller in the same cluster”](https://kubernetes.github.io/ingress-nginx/#how-to-easily-install-multiple-instances-of-the-ingress-nginx-controller-in-the-same-cluster)
for more details. for more details.
### Webhook network access ### Webhook network access
!!! warning !!! warning
The controller uses an [admission webhook](https://kubernetes.io/docs/reference/access-authn-authz/extensible-admission-controllers/) The controller uses an [admission webhook](https://kubernetes.io/docs/reference/access-authn-authz/extensible-admission-controllers/)
to validate Ingress definitions. Make sure that you don't have to validate Ingress definitions. Make sure that you don't have
[Network policies](https://kubernetes.io/docs/concepts/services-networking/network-policies/) [Network policies](https://kubernetes.io/docs/concepts/services-networking/network-policies/)
or additional firewalls preventing connections from the API server to the `ingress-nginx-controller-admission` service. or additional firewalls preventing connections from the API server to the `ingress-nginx-controller-admission` service.
### Certificate generation ### Certificate generation
@ -435,22 +450,24 @@ You can wait until it is ready to run the next command:
### Running on Kubernetes versions older than 1.19 ### Running on Kubernetes versions older than 1.19
Ingress resources evolved over time. They started with `apiVersion: extensions/v1beta1`, Ingress resources evolved over time. They started with `apiVersion: extensions/v1beta1`,
then moved to `apiVersion: networking.k8s.io/v1beta1` and more recently to `apiVersion: networking.k8s.io/v1`. then moved to `apiVersion: networking.k8s.io/v1beta1` and more recently to `apiVersion: networking.k8s.io/v1`.
Here is how these Ingress versions are supported in Kubernetes: Here is how these Ingress versions are supported in Kubernetes:
- before Kubernetes 1.19, only `v1beta1` Ingress resources are supported - before Kubernetes 1.19, only `v1beta1` Ingress resources are supported
- from Kubernetes 1.19 to 1.21, both `v1beta1` and `v1` Ingress resources are supported - from Kubernetes 1.19 to 1.21, both `v1beta1` and `v1` Ingress resources are supported
- in Kubernetes 1.22 and above, only `v1` Ingress resources are supported - in Kubernetes 1.22 and above, only `v1` Ingress resources are supported
And here is how these Ingress versions are supported in Ingress-Nginx Controller: And here is how these Ingress versions are supported in Ingress-Nginx Controller:
- before version 1.0, only `v1beta1` Ingress resources are supported - before version 1.0, only `v1beta1` Ingress resources are supported
- in version 1.0 and above, only `v1` Ingress resources are - in version 1.0 and above, only `v1` Ingress resources are
As a result, if you're running Kubernetes 1.19 or later, you should be able to use the latest version of the NGINX As a result, if you're running Kubernetes 1.19 or later, you should be able to use the latest version of the NGINX
Ingress Controller; but if you're using an old version of Kubernetes (1.18 or earlier) you will have to use version 0.X Ingress Controller; but if you're using an old version of Kubernetes (1.18 or earlier) you will have to use version 0.X
of the Ingress-Nginx Controller (e.g. version 0.49). of the Ingress-Nginx Controller (e.g. version 0.49).
The Helm chart of the Ingress-Nginx Controller switched to version 1 in version 4 of the chart. In other words, if The Helm chart of the Ingress-Nginx Controller switched to version 1 in version 4 of the chart. In other words, if
you're running Kubernetes 1.19 or earlier, you should use version 3.X of the chart (this can be done by adding you're running Kubernetes 1.19 or earlier, you should use version 3.X of the chart (this can be done by adding
`--version='<4'` to the `helm install` command ). `--version='<4'` to the `helm install` command ).