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Use helm charts from downloaded release (#3689) 

* Use charts from downloaded release

* fix circleci errors

* bad link

* more bad links

* undo fix links
This commit is contained in:
Frank Budinsky 2019-03-14 16:38:37 -04:00 committed by istio-bot
parent bb81b68d9c
commit dd8b7aac40
4 changed files with 69 additions and 150 deletions
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4
content/boilerplates/helm-security-warning.md
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@ -1,7 +1,7 @@
--- ---
--- ---
{{< warning >}} {{< warning >}}
The instructions for using Helm with Tiller do not use secure defaults. See The instructions for using Helm with Tiller do not use secure defaults.
the [Helm Security Guidelines](https://helm.sh/docs/using_helm/#securing-your-helm-installation) See the [Helm Security Guidelines](https://helm.sh/docs/using_helm/#securing-your-helm-installation)
for further steps to secure a Tiller-based installation. for further steps to secure a Tiller-based installation.
{{< /warning >}} {{< /warning >}}

190
content/docs/setup/kubernetes/install/helm/index.md
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@ -25,61 +25,37 @@ and then further customize the configuration for your specific needs.
## Prerequisites ## Prerequisites
1. [Download the Istio release](/docs/setup/kubernetes/download/).
1. Perform any necessary [platform-specific setup](/docs/setup/kubernetes/prepare/platform-setup/). 1. Perform any necessary [platform-specific setup](/docs/setup/kubernetes/prepare/platform-setup/).
1. Check the [Requirements for Pods and Services](/docs/setup/kubernetes/prepare/requirements/) on Pods and Services. 1. Check the [Requirements for Pods and Services](/docs/setup/kubernetes/prepare/requirements/).
1. [Install a Helm client with a version higher than 2.10](https://github.com/helm/helm/blob/master/docs/install.md). 1. [Install a Helm client](https://github.com/helm/helm/blob/master/docs/install.md) with a version higher than 2.10.
1. Istio by default uses `LoadBalancer` service object types. Some platforms do not support `LoadBalancer`
service objects. For platforms lacking `LoadBalancer` support, install Istio with `NodePort` support
instead with the flags `--set gateways.istio-ingressgateway.type=NodePort`
appended to the end of the Helm instructions in the installation steps below.
{{< tip >}} {{< tip >}}
These instructions assume the `istio-init` container will be used to setup `iptables` to redirect network traffic These instructions assume the `istio-init` container will be used to setup `iptables` to redirect network traffic
to/from Envoy sidecars. If you plan to customize the configuration to use `--set istio_cni.enabled=true`, you also to/from Envoy sidecars. If you plan to customize the configuration to use `--set istio_cni.enabled=true`, you also
need to ensure that a CNI plugin is enabled. Refer to [CNI Setup](/docs/setup/kubernetes/additional-setup/cni/) need to ensure that a CNI plugin is deployed. Refer to [CNI Setup](/docs/setup/kubernetes/additional-setup/cni/)
for details. for details.
{{< /tip >}} {{< /tip >}}
## Installation steps ## Installation steps
The following commands may be run from any directory. We use Helm to obtain the charts via a secure The following commands use the Helm charts that are included in the Istio release image.
HTTPS endpoint hosted in Istio's infrastructure throughout this document. Change directory to the root of the release and then
choose one of the following two **mutually exclusive** options:
1. To deploy Istio without using Tiller, follow the instructions for [option 1](/docs/setup/kubernetes/install/helm/#option-1-install-with-helm-via-helm-template).
1. To use [Helm's Tiller pod](https://helm.sh/) to manage your Istio release, follow the instructions for [option 2](/docs/setup/kubernetes/install/helm/#option-2-install-with-helm-and-tiller-via-helm-install).
{{< tip >}} {{< tip >}}
The techniques in this document use Istio's daily build of Istio 1.1 Helm packages. These Istio, by default, uses `LoadBalancer` service object types. Some platforms do not support `LoadBalancer`
Helm charts may be slightly ahead of any particular snapshot as the project finishes the release service objects. For platforms lacking `LoadBalancer` support, install Istio with `NodePort` support
candidates prior to 1.1 release. To use a snapshot-specific release, change the repo add URL to instead with the flags `--set gateways.istio-ingressgateway.type=NodePort`
the appropriate snapshot. For example, if you want to run with snapshot 6, use the appended to the end of the Helm instructions in the installation steps below.
[URL](https://gcsweb.istio.io/gcs/istio-prerelease/prerelease/1.1.0-snapshot.6/charts) in installation step 1 below.
{{< /tip >}} {{< /tip >}}
1. Update Helm's local package cache with the location of the Helm daily release:
{{< text bash >}}
$ helm repo add istio.io "https://gcsweb.istio.io/gcs/istio-prerelease/daily-build/release-1.1-latest-daily/charts/"
{{< /text >}}
1. Make an Istio working directory for fetching the charts:
{{< text bash >}}
$ mkdir -p $HOME/istio-fetch
{{< /text >}}
1. Fetch the helm templates needed for installation:
{{< text bash >}}
$ helm fetch istio.io/istio-init --untar --untardir $HOME/istio-fetch
$ helm fetch istio.io/istio --untar --untardir $HOME/istio-fetch
{{< /text >}}
1. Choose one of the following two **mutually exclusive** options described below.
- To deploy Istio without using Tiller, follow the instructions for [option 1](/docs/setup/kubernetes/install/helm/#option-1-install-with-helm-via-helm-template).
- To use [Helm's Tiller pod](https://helm.sh/) to manage your Istio release, follow the instructions for [option 2](/docs/setup/kubernetes/install/helm/#option-2-install-with-helm-and-tiller-via-helm-install).
### Option 1: Install with Helm via `helm template` ### Option 1: Install with Helm via `helm template`
Choose this option if your cluster doesn't have [Tiller](https://github.com/kubernetes/helm/blob/master/docs/architecture.md#components) Choose this option if your cluster doesn't have [Tiller](https://github.com/kubernetes/helm/blob/master/docs/architecture.md#components)
@ -96,31 +72,10 @@ deployed and you don't want to install it.
(CRDs) using `kubectl apply`, and wait a few seconds for the CRDs to be committed in the Kubernetes API-server: (CRDs) using `kubectl apply`, and wait a few seconds for the CRDs to be committed in the Kubernetes API-server:
{{< text bash >}} {{< text bash >}}
$ helm template $HOME/istio-fetch/istio-init --name istio-init --namespace istio-system | kubectl apply -f - $ helm template install/kubernetes/helm/istio-init --name istio-init --namespace istio-system | kubectl apply -f -
{{< /text >}} {{< /text >}}
{{< warning >}} 1. Verify that all `58` Istio CRDs were committed to the Kubernetes api-server using the following command:
Do not manually delete Custom Resource Definitions from the generated yaml. Doing so will cause precondition
checks on various components to fail and will stop Istio from starting up correctly.
<p> If you *absolutely have to* delete CRDs, then update Galley deployment settings to explicitly indicate the kinds of deleted CRDs:
{{< text bash >}}
$ kubectl -n istio-system edit deployment istio-galley
{{< /text >}}
{{< text yaml >}}
containers:
- command:
- /usr/local/bin/galley
- server
# ...
- --excludedResourceKinds
- noop # exclude CRD w/ kind: noop
{{< /text >}}
{{< /warning >}}
1. Verify all `58` Istio CRDs were committed to the Kubernetes API-server using the following command:
{{< text bash >}} {{< text bash >}}
$ kubectl get crds | grep 'istio.io\|certmanager.k8s.io' | wc -l $ kubectl get crds | grep 'istio.io\|certmanager.k8s.io' | wc -l
@ -141,7 +96,7 @@ $ kubectl -n istio-system edit deployment istio-galley
{{% tab name="default" cookie-value="default" %}} {{% tab name="default" cookie-value="default" %}}
{{< text bash >}} {{< text bash >}}
$ helm template $HOME/istio-fetch/istio --name istio --namespace istio-system | kubectl apply -f - $ helm template install/kubernetes/helm/istio --name istio --namespace istio-system | kubectl apply -f -
{{< /text >}} {{< /text >}}
{{% /tab %}} {{% /tab %}}
@ -149,8 +104,8 @@ $ helm template $HOME/istio-fetch/istio --name istio --namespace istio-system |
{{% tab name="demo" cookie-value="demo" %}} {{% tab name="demo" cookie-value="demo" %}}
{{< text bash >}} {{< text bash >}}
$ helm template $HOME/istio-fetch/istio --name istio --namespace istio-system \ $ helm template install/kubernetes/helm/istio --name istio --namespace istio-system \
--values $HOME/istio-fetch/istio/values-istio-demo.yaml | kubectl apply -f - --values install/kubernetes/helm/istio/values-istio-demo.yaml | kubectl apply -f -
{{< /text >}} {{< /text >}}
{{% /tab %}} {{% /tab %}}
@ -158,8 +113,8 @@ $ helm template $HOME/istio-fetch/istio --name istio --namespace istio-system \
{{% tab name="demo-auth" cookie-value="demo-auth" %}} {{% tab name="demo-auth" cookie-value="demo-auth" %}}
{{< text bash >}} {{< text bash >}}
$ helm template $HOME/istio-fetch/istio --name istio --namespace istio-system \ $ helm template install/kubernetes/helm/istio --name istio --namespace istio-system \
--values $HOME/istio-fetch/istio/values-istio-demo-auth.yaml | kubectl apply -f - --values install/kubernetes/helm/istio/values-istio-demo-auth.yaml | kubectl apply -f -
{{< /text >}} {{< /text >}}
{{% /tab %}} {{% /tab %}}
@ -167,8 +122,8 @@ $ helm template $HOME/istio-fetch/istio --name istio --namespace istio-system \
{{% tab name="minimal" cookie-value="minimal" %}} {{% tab name="minimal" cookie-value="minimal" %}}
{{< text bash >}} {{< text bash >}}
$ helm template $HOME/istio-fetch/istio --name istio --namespace istio-system \ $ helm template install/kubernetes/helm/istio --name istio --namespace istio-system \
--values $HOME/istio-fetch/istio/values-istio-minimal.yaml | kubectl apply -f - --values install/kubernetes/helm/istio/values-istio-minimal.yaml | kubectl apply -f -
{{< /text >}} {{< /text >}}
{{% /tab %}} {{% /tab %}}
@ -176,8 +131,8 @@ $ helm template $HOME/istio-fetch/istio --name istio --namespace istio-system \
{{% tab name="remote" cookie-value="remote" %}} {{% tab name="remote" cookie-value="remote" %}}
{{< text bash >}} {{< text bash >}}
$ helm template $HOME/istio-fetch/istio --name istio --namespace istio-system \ $ helm template install/kubernetes/helm/istio --name istio --namespace istio-system \
--values $HOME/istio-fetch/istio/values-istio-remote.yaml | kubectl apply -f - --values install/kubernetes/helm/istio/values-istio-remote.yaml | kubectl apply -f -
{{< /text >}} {{< /text >}}
{{% /tab %}} {{% /tab %}}
@ -185,8 +140,8 @@ $ helm template $HOME/istio-fetch/istio --name istio --namespace istio-system \
{{% tab name="sds" cookie-value="sds" %}} {{% tab name="sds" cookie-value="sds" %}}
{{< text bash >}} {{< text bash >}}
$ helm template $HOME/istio-fetch/istio --name istio --namespace istio-system \ $ helm template install/kubernetes/helm/istio --name istio --namespace istio-system \
--values $HOME/istio-fetch/istio/values-istio-sds-auth.yaml | kubectl apply -f - --values install/kubernetes/helm/istio/values-istio-sds-auth.yaml | kubectl apply -f -
{{< /text >}} {{< /text >}}
{{% /tab %}} {{% /tab %}}
@ -205,26 +160,7 @@ to manage the lifecycle of Istio.
If not already defined, create one using following command: If not already defined, create one using following command:
{{< text bash >}} {{< text bash >}}
$ kubectl apply -f - <<EOF $ kubectl apply -f @install/kubernetes/helm/helm-service-account.yaml@
apiVersion: v1
kind: ServiceAccount
metadata:
name: tiller
namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: tiller
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: cluster-admin
subjects:
- kind: ServiceAccount
name: tiller
namespace: kube-system
EOF
{{< /text >}} {{< /text >}}
1. Install Tiller on your cluster with the service account: 1. Install Tiller on your cluster with the service account:
@ -236,7 +172,7 @@ to manage the lifecycle of Istio.
1. Install the `istio-init` chart to bootstrap all the Istio's CRDs: 1. Install the `istio-init` chart to bootstrap all the Istio's CRDs:
{{< text bash >}} {{< text bash >}}
$ helm install istio.io/istio-init --name istio-init --namespace istio-system $ helm install install/kubernetes/helm/istio-init --name istio-init --namespace istio-system
{{< /text >}} {{< /text >}}
1. Verify that all `58` Istio CRDs were committed to the Kubernetes api-server using the following command: 1. Verify that all `58` Istio CRDs were committed to the Kubernetes api-server using the following command:
@ -260,7 +196,7 @@ to manage the lifecycle of Istio.
{{% tab name="default" cookie-value="default" %}} {{% tab name="default" cookie-value="default" %}}
{{< text bash >}} {{< text bash >}}
$ helm install istio.io/istio --name istio --namespace istio-system $ helm install install/kubernetes/helm/istio --name istio --namespace istio-system
{{< /text >}} {{< /text >}}
{{% /tab %}} {{% /tab %}}
@ -268,8 +204,8 @@ $ helm install istio.io/istio --name istio --namespace istio-system
{{% tab name="demo" cookie-value="demo" %}} {{% tab name="demo" cookie-value="demo" %}}
{{< text bash >}} {{< text bash >}}
$ helm install istio.io/istio --name istio --namespace istio-system \ $ helm install install/kubernetes/helm/istio --name istio --namespace istio-system \
--values $HOME/istio-fetch/istio/values-istio-demo.yaml --values install/kubernetes/helm/istio/values-istio-demo.yaml
{{< /text >}} {{< /text >}}
{{% /tab %}} {{% /tab %}}
@ -277,8 +213,8 @@ $ helm install istio.io/istio --name istio --namespace istio-system \
{{% tab name="demo-auth" cookie-value="demo-auth" %}} {{% tab name="demo-auth" cookie-value="demo-auth" %}}
{{< text bash >}} {{< text bash >}}
$ helm install istio.io/istio --name istio --namespace istio-system \ $ helm install install/kubernetes/helm/istio --name istio --namespace istio-system \
--values $HOME/istio-fetch/istio/values-istio-demo-auth.yaml --values install/kubernetes/helm/istio/values-istio-demo-auth.yaml
{{< /text >}} {{< /text >}}
{{% /tab %}} {{% /tab %}}
@ -286,8 +222,8 @@ $ helm install istio.io/istio --name istio --namespace istio-system \
{{% tab name="minimal" cookie-value="minimal" %}} {{% tab name="minimal" cookie-value="minimal" %}}
{{< text bash >}} {{< text bash >}}
$ helm install istio.io/istio --name istio --namespace istio-system \ $ helm install install/kubernetes/helm/istio --name istio --namespace istio-system \
--values $HOME/istio-fetch/istio/values-istio-minimal.yaml --values install/kubernetes/helm/istio/values-istio-minimal.yaml
{{< /text >}} {{< /text >}}
{{% /tab %}} {{% /tab %}}
@ -295,8 +231,8 @@ $ helm install istio.io/istio --name istio --namespace istio-system \
{{% tab name="remote" cookie-value="remote" %}} {{% tab name="remote" cookie-value="remote" %}}
{{< text bash >}} {{< text bash >}}
$ helm install istio.io/istio --name istio --namespace istio-system \ $ helm install install/kubernetes/helm/istio --name istio --namespace istio-system \
--values $HOME/istio-fetch/istio/values-istio-remote.yaml --values install/kubernetes/helm/istio/values-istio-remote.yaml
{{< /text >}} {{< /text >}}
{{% /tab %}} {{% /tab %}}
@ -304,8 +240,8 @@ $ helm install istio.io/istio --name istio --namespace istio-system \
{{% tab name="sds" cookie-value="sds" %}} {{% tab name="sds" cookie-value="sds" %}}
{{< text bash >}} {{< text bash >}}
$ helm install istio.io/istio --name istio --namespace istio-system \ $ helm install install/kubernetes/helm/istio --name istio --namespace istio-system \
--values $HOME/istio-fetch/istio/values-istio-sds-auth.yaml --values install/kubernetes/helm/istio/values-istio-sds-auth.yaml
{{< /text >}} {{< /text >}}
{{% /tab %}} {{% /tab %}}
@ -314,8 +250,9 @@ $ helm install istio.io/istio --name istio --namespace istio-system \
## Verifying the installation ## Verifying the installation
1. Run the following command to verify that all the Kubernetes services corresponding to your selected 1. Referring to components table in
[configuration profile](/docs/setup/kubernetes/additional-setup/config-profiles/) have been deployed: [configuration profiles](/docs/setup/kubernetes/additional-setup/config-profiles/),
verify that the Kubernetes services corresponding to your selected profile have been deployed.
{{< text bash >}} {{< text bash >}}
$ kubectl get svc -n istio-system $ kubectl get svc -n istio-system
@ -329,14 +266,14 @@ $ helm install istio.io/istio --name istio --namespace istio-system \
## Uninstall ## Uninstall
1. If you installed Istio with the `helm template`, uninstall with these commands: * If you installed Istio using the `helm template` command, uninstall with these commands:
{{< tabset cookie-name="helm_profile" >}} {{< tabset cookie-name="helm_profile" >}}
{{% tab name="default" cookie-value="default" %}} {{% tab name="default" cookie-value="default" %}}
{{< text bash >}} {{< text bash >}}
$ helm template $HOME/istio-fetch/istio --name istio --namespace istio-system | kubectl delete -f - $ helm template install/kubernetes/helm/istio --name istio --namespace istio-system | kubectl delete -f -
$ kubectl delete namespace istio-system $ kubectl delete namespace istio-system
{{< /text >}} {{< /text >}}
@ -345,8 +282,8 @@ $ kubectl delete namespace istio-system
{{% tab name="demo" cookie-value="demo" %}} {{% tab name="demo" cookie-value="demo" %}}
{{< text bash >}} {{< text bash >}}
$ helm template $HOME/istio-fetch/istio --name istio --namespace istio-system \ $ helm template install/kubernetes/helm/istio --name istio --namespace istio-system \
--values $HOME/istio-fetch/istio/values-istio-demo.yaml | kubectl delete -f - --values install/kubernetes/helm/istio/values-istio-demo.yaml | kubectl delete -f -
$ kubectl delete namespace istio-system $ kubectl delete namespace istio-system
{{< /text >}} {{< /text >}}
@ -355,8 +292,8 @@ $ kubectl delete namespace istio-system
{{% tab name="demo-auth" cookie-value="demo-auth" %}} {{% tab name="demo-auth" cookie-value="demo-auth" %}}
{{< text bash >}} {{< text bash >}}
$ helm template $HOME/istio-fetch/istio --name istio --namespace istio-system \ $ helm template install/kubernetes/helm/istio --name istio --namespace istio-system \
--values $HOME/istio-fetch/istio/values-istio-demo-auth.yaml | kubectl delete -f - --values install/kubernetes/helm/istio/values-istio-demo-auth.yaml | kubectl delete -f -
$ kubectl delete namespace istio-system $ kubectl delete namespace istio-system
{{< /text >}} {{< /text >}}
@ -365,8 +302,8 @@ $ kubectl delete namespace istio-system
{{% tab name="minimal" cookie-value="minimal" %}} {{% tab name="minimal" cookie-value="minimal" %}}
{{< text bash >}} {{< text bash >}}
$ helm template $HOME/istio-fetch/istio --name istio --namespace istio-system \ $ helm template install/kubernetes/helm/istio --name istio --namespace istio-system \
--values $HOME/istio-fetch/istio/values-istio-minimal.yaml | kubectl delete -f - --values install/kubernetes/helm/istio/values-istio-minimal.yaml | kubectl delete -f -
$ kubectl delete namespace istio-system $ kubectl delete namespace istio-system
{{< /text >}} {{< /text >}}
@ -375,8 +312,8 @@ $ kubectl delete namespace istio-system
{{% tab name="remote" cookie-value="remote" %}} {{% tab name="remote" cookie-value="remote" %}}
{{< text bash >}} {{< text bash >}}
$ helm template $HOME/istio-fetch/istio --name istio --namespace istio-system \ $ helm template install/kubernetes/helm/istio --name istio --namespace istio-system \
--values $HOME/istio-fetch/istio/values-istio-remote.yaml | kubectl delete -f - --values install/kubernetes/helm/istio/values-istio-remote.yaml | kubectl delete -f -
$ kubectl delete namespace istio-system $ kubectl delete namespace istio-system
{{< /text >}} {{< /text >}}
@ -385,8 +322,8 @@ $ kubectl delete namespace istio-system
{{% tab name="sds" cookie-value="sds" %}} {{% tab name="sds" cookie-value="sds" %}}
{{< text bash >}} {{< text bash >}}
$ helm template $HOME/istio-fetch/istio --name istio --namespace istio-system \ $ helm template install/kubernetes/helm/istio --name istio --namespace istio-system \
--values $HOME/istio-fetch/istio/values-istio-sds-auth.yaml | kubectl delete -f - --values install/kubernetes/helm/istio/values-istio-sds-auth.yaml | kubectl delete -f -
$ kubectl delete namespace istio-system $ kubectl delete namespace istio-system
{{< /text >}} {{< /text >}}
@ -394,7 +331,7 @@ $ kubectl delete namespace istio-system
{{< /tabset >}} {{< /tabset >}}
1. If you installed Istio using `Tiller`, uninstall with these commands: * If you installed Istio using Helm and Tiller, uninstall with these commands:
{{< text bash >}} {{< text bash >}}
$ helm delete --purge istio $ helm delete --purge istio
@ -412,15 +349,10 @@ configuration data rather than unexpectedly lose it.
Deleting CRDs permanently deletes any configuration changes that you have made to Istio. Deleting CRDs permanently deletes any configuration changes that you have made to Istio.
{{< /warning >}} {{< /warning >}}
The `istio-init` chart contains all raw CRDs in the `istio-init/files` directory. After fetching this The `istio-init` chart contains all raw CRDs in the `istio-init/files` directory.
chart, you can simply delete the CRDs using `kubectl`. You can simply delete the CRDs using `kubectl`.
To permanently delete Istio's CRDs and the entire Istio configuration, run:
1. To permanently delete Istio's CRDs and the entire Istio configuration, run:
{{< text bash >}} {{< text bash >}}
$ kubectl delete -f install/kubernetes/helm/istio-init/files
$ mkdir -p $HOME/istio-fetch
$ helm fetch istio.io/istio-init --untar --untardir $HOME/istio-fetch
$ kubectl delete -f $HOME/istio-fetch/istio-init/files
{{< /text >}} {{< /text >}}

15
content/docs/setup/kubernetes/install/kubernetes/index.md
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@ -23,20 +23,7 @@ This permits customization of Istio to operator specific requirements.
1. [Download the Istio release](/docs/setup/kubernetes/download/). 1. [Download the Istio release](/docs/setup/kubernetes/download/).
1. [Kubernetes platform setup](/docs/setup/kubernetes/prepare/platform-setup/): 1. Perform any necessary [platform-specific setup](/docs/setup/kubernetes/prepare/platform-setup/).
* [Alibaba Cloud](/docs/setup/kubernetes/prepare/platform-setup/alicloud/)
* [Azure](/docs/setup/kubernetes/prepare/platform-setup/azure/)
* [Docker For Desktop](/docs/setup/kubernetes/prepare/platform-setup/docker/)
* [Google Container Engine (GKE)](/docs/setup/kubernetes/prepare/platform-setup/gke/)
* [IBM Cloud](/docs/setup/kubernetes/prepare/platform-setup/ibm/)
* [Minikube](/docs/setup/kubernetes/prepare/platform-setup/minikube/)
* [OpenShift Origin](/docs/setup/kubernetes/prepare/platform-setup/openshift/)
* [Oracle Cloud Infrastructure (OKE)](/docs/setup/kubernetes/prepare/platform-setup/oci/)
{{< tip >}}
Istio {{< istio_version >}} has been tested with these Kubernetes releases: {{< supported_kubernetes_versions >}}.
{{< /tip >}}
1. Check the [Requirements for Pods and Services](/docs/setup/kubernetes/prepare/requirements/). 1. Check the [Requirements for Pods and Services](/docs/setup/kubernetes/prepare/requirements/).

10
content/docs/setup/kubernetes/prepare/requirements/index.md
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@ -23,11 +23,11 @@ cluster must satisfy the following requirements:
- `tls` - `tls`
- `udp` - `udp`
For example, `name: http2-foo` or `name: http` are valid port names, but For example, `name: http2-foo` or `name: http` are valid port names, but
`name: http2foo` is not. If the port name does not begin with a recognized `name: http2foo` is not. If the port name does not begin with a recognized
prefix or if the port is unnamed, traffic on the port is treated as prefix or if the port is unnamed, traffic on the port is treated as
plain TCP traffic unless the port [explicitly](https://kubernetes.io/docs/concepts/services-networking/service/#defining-a-service) plain TCP traffic unless the port [explicitly](https://kubernetes.io/docs/concepts/services-networking/service/#defining-a-service)
uses `Protocol: UDP` to signify a UDP port. uses `Protocol: UDP` to signify a UDP port.
- **Pod ports**: Pods must include an explicit list of the ports each - **Pod ports**: Pods must include an explicit list of the ports each
container listens on. Use a `containerPort` configuration in the container container listens on. Use a `containerPort` configuration in the container