Install Armory Enterprise for Spinnaker in Kubernetes

Armory Enterprise requires a license. For more information, contact Armory.

Overview of installing Armory Enterprise for Spinnaker in Kubernetes

This guide describes the initial installation of Armory Enterprise in Kubernetes. You can choose between two different installation methods: Armory Operator or Halyard. By the end of this guide, you will have an instance of Armory Enterprise up and running on your Kubernetes cluster. The document does not fully cover the following:

• TLS Encryption
• Authentication/Authorization
• Add K8s accounts to deploy to
• Add cloud accounts to deploy to

See Next Steps for information related to these topics.

This document focuses on Armory Enterprise but can be adapted to install Open Source Spinnaker^TM by using Open Source Operator or a different Halyard container, and a corresponding different Spinnaker version.

Choosing an installation method

There are two recommended ways of installing Armory Enterprise: using the Armory Operator or using Halyard.

• Armory Operator
• Halyard

Prerequisites for installing Armory

• Your Kubernetes cluster is up and running with at least 4 CPUs and 12 GB of memory. This is the bare minimum to install and run Armory; depending on our Armory workload, you may need more resources.
• You have kubectl installed and are able to access and create Kubernetes resources.
• You have access to an existing object storage bucket or the ability to create an object storage bucket (Amazon S3, Google GCS, Azure Storage, or Minio). For the initial version of this document, only Amazon S3 is used.
• You have access to an IAM role or user with access to the S3 bucket. If neither of these exists, you need to create an IAM role or user with access to the S3 bucket.
• Your cluster has either an existing Kubernetes Ingress controller or the permissions to install the NGINX Ingress Controller

These instructions set up the Armory microservice called “Front50”, which stores Armory Application and Pipeline configuration to an object store, with the following permission:

• Front50 has full access to an S3 bucket through either an IAM user (with an AWS access key and secret access key) or an IAM role (attached to your Kubernetes cluster).

At the end of this guide, you have a Armory deployment that is:

• Accessible from your browser
• Able to deploy other Kubernetes resources to the namespace where it runs, but not to any other namespace

Configure application and pipeline configuration storage

The Armory microservice Front50 requires a backing store to store Armory Application and Pipeline definitions. There are a number of options for this:

• Amazon S3 Bucket
• Google Cloud Storage (GCS) Bucket
• Azure Storage Bucket
• Minio
• MySQL

You must set up a backing store for Armory to use for persistent application and pipeline configuration.

Using S3 for Front50

Armory (the Front50 service, specifically) needs access to an S3 bucket. There are a number of ways to achieve this.

This section describes how to do the following:

• Create an S3 bucket
• Configure access to the bucket:
  • (Option 1) Add an IAM Policy to an IAM Role, granting access to the S3 bucket
  • (Option 2) Create an IAM User with access to the S3 bucket

Connect to the Kubernetes cluster

You must be able to connect to the Kubernetes cluster with kubectl. Depending on the type of your Kubernetes cluster, there are a number of ways of achieving this.

Connecting to an AWS EKS cluster

If you use an AWS EKS cluster, you must be able to deploy resources to it. Before you start this section, make sure you have configured the aws CLI with credentials and a default region / availability zone. For more information, see the aws installation directions and configuration directions). Armory recommends using the V2 version of the AWS CLI.

If you have access to the role that created the EKS cluster, update your kubeconfig with access to the Kubernetes cluster using this command:

aws eks update-kubeconfig --name <EKS_CLUSTER_NAME>

From here, validate access to the cluster with this command:

kubectl get namespaces

The command returns the namespaces in the EKS cluster.

Connecting to other Kubernetes clusters

If you created a Kubernetes on AWS with KOPS or another Kubernetes tool, ensure that you can communicate with the Kubernetes cluster with kubectl:

kubectl get namespaces

The command returns the namespaces in the EKS cluster.

Install Armory using the Operator

Install CRDs and Operator

First, download the CRDs and manifests from the latest stable release.

$ bash -c 'curl -L https://github.com/armory-io/spinnaker-operator/releases/latest/download/manifests.tgz | tar -xz'

Install Armory CRDs:

$ kubectl apply -f deploy/crds/

Create a namespace for Operator. In this guide you use spinnaker-operator, but the namespace can have any name, provided that you update the namespace name in the role_binding.yaml file.

kubectl create namespace spinnaker-operator

Install Operator manifests:

$ kubectl apply -n spinnaker-operator -f deploy/operator/cluster

After installation, you can verify that Operator is running with the following command:

$ kubectl -n spinnaker-operator get pods

The command returns output similar to the following if the pod for Operator is running:

NAMESPACE                                READY         STATUS       RESTARTS      AGE
spinnaker-operator-7cd659654b-4vktl      2/2           Running      0             6s

Install Armory

First, create the namespace where Armory will be installed. In this guide you use spinnaker, but it can have any name:

kubectl create namespace spinnaker

You define and configure Armory in a YAML file and use kubectl to create the service. Copy the contents below to a configuration file called spinnakerservice.yml. The code creates a Kubernetes ServiceAccount with permissions only to the namespace where Armory is installed. Applying this file creates a base Armory installation with one Kubernetes target account, which enables Armory to deploy to the same namespace where it is installed.

Note the values that you need to modify:

• Armory version: Use the version of Armory that you want to deploy, which can be found here.
• S3 bucket: Use the name of the S3 bucket created above.
• S3 region: Region where the S3 bucket is located.
• S3 accessKeyId: Optional, set when using IAM user credentials to authenticate to the S3 bucket.
• S3 secretAccessKey: Optional, set when using IAM user credentials to authenticate to the S3 bucket.
• metadata name: Change if you’re installing Armory to a namespace other than spinnaker.

apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
  creationTimestamp: null
  name: spin-role
rules:
- apiGroups:
  - ""
  resources:
  - pods
  - services
  - endpoints
  - persistentvolumeclaims
  - events
  - configmaps
  - secrets
  - namespaces
  verbs:
  - '*'
- apiGroups:
  - batch
  - extensions
  resources:
  - jobs
  verbs:
  - '*'
- apiGroups:
  - apps
  - extensions
  resources:
  - deployments
  - daemonsets
  - replicasets
  - statefulsets
  verbs:
  - '*'
- apiGroups:
  - monitoring.coreos.com
  resources:
  - servicemonitors
  verbs:
  - get
  - create
- apiGroups:
  - apps
  resourceNames:
  - spinnaker-operator
  resources:
  - deployments/finalizers
  verbs:
  - update
- apiGroups:
  - metrics.k8s.io
  resources:
  - pods
  verbs:
  - '*'
- apiGroups:
  - apps
  resourceNames:
  - spinnaker-operator
  resources:
  - deployments/finalizers
  verbs:
  - update
- apiGroups:
  - spinnaker.io
  resources:
  - '*'
  - spinnakeraccounts
  verbs:
  - '*'
- apiGroups:
  - spinnaker.armory.io
  resources:
  - '*'
  - spinnakerservices
  verbs:
  - '*'
---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: spin-sa
---
kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: spin-role-binding
subjects:
- kind: ServiceAccount
  name: spin-sa
roleRef:
  kind: Role
  name: spin-role
  apiGroup: rbac.authorization.k8s.io
---
apiVersion: spinnaker.armory.io/v1alpha2
kind: SpinnakerService
metadata:
  name: spinnaker
spec:
  spinnakerConfig:
    config:
      version: 2.17.1  # Replace with desired version of Armory to deploy
      persistentStorage:
        persistentStoreType: s3
        s3:
          bucket: spinnaker-abcxyz # Replace with the name of the S3 bucket created previously
          region: us-west-2        # Replace with correct bucket's region
          accessKeyId: XYZ         # (Optional, set only when using an IAM user to authenticate to the bucket instead of an IAM role)
          secretAccessKey: XYZ     # (Optional, set only when using an IAM user to authenticate to the bucket instead of an IAM role)
          rootFolder: front50
      features:
        artifacts: true
      providers:
        kubernetes:
          accounts:
          - name: spinnaker
            cacheThreads: 1
            cachingPolicies: []
            configureImagePullSecrets: true
            customResources: []
            dockerRegistries: []
            kinds: []
            namespaces:
            - spinnaker  # Name of the namespace where Armory is installed
            oAuthScopes: []
            omitKinds: []
            omitNamespaces: []
            onlySpinnakerManaged: false
            permissions: {}
            providerVersion: V2
            requiredGroupMembership: []
            serviceAccount: true
          enabled: true
          primaryAccount: spinnaker
    service-settings:
      clouddriver:
        kubernetes:
          serviceAccountName: spin-sa

Deploy the manifest with the following command:

kubectl -n spinnaker apply -f spinnakerservice.yml

Install Armory using Halyard

Start the Halyard StatefulSet

Halyard is a Docker image used to install Armory. It generates Kubernetes manifests for each of the Armory services. This guide explains how to run it in a Kubernetes cluster as a StatefulSet with one (1) Pod.

First, create a namespace for Armory to run in (this can be any namespace):

kubectl create ns spinnaker

Create a file called halyard.yml that contains the following:

---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  name: spinnaker
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
-
  kind: ServiceAccount
  name: default
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: hal-pvc
  labels:
    app: halyard
spec:
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 100Mi
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: halyard
spec:
  replicas: 1
  serviceName: halyard
  selector:
    matchLabels:
      app: halyard
  template:
    metadata:
      labels:
        app: halyard
    spec:
      containers:
      -
        name: halyard
        image: armory/halyard-armory:1.11.0
        volumeMounts:
        -
          name: hal
          mountPath: /home/spinnaker
        env:
        -
          name: HOME
          value: "/home/spinnaker"
      securityContext:
        runAsUser: 1000
        runAsGroup: 65535
        fsGroup: 65535
      volumes:
      -
        name: hal
        persistentVolumeClaim:
          claimName: hal-pvc

This Kubernetes manifest has these three resources in it:

• A Kubernetes Rolebinding that grants the default ServiecAccount access to the full namespace. This is used by both Halyard and Clouddriver.
• A PersistentVolumeClaim used for persistent Halyard configuration.
• A StatefulSet using the PVC which runs the Halyard Pod.

Apply (create) the resources in your namespace:

kubectl -n spinnaker apply -f halyard.yml

Change spinnaker to a different namespace if you’re using a different namespace.

Check the status of the pod and wait until all the pods are running:

kubectl -n spinnaker get pods

If you run into issues, such as the pods getting evicted, see the Kubernetes documentation for troubleshooting tips.

Access the Halyard container

The majority of tasks you need to perform are done from inside the Halyard container. Use the following command to access the container:

kubectl -n spinnaker exec -it halyard-0 bash

Once inside the container, customize the environment with a minimal .bashrc like this:

tee -a /home/spinnaker/.bashrc <<-EOF
export PS1="\h:\w \$ "
alias ll='ls -alh'
cd /home/spinnaker
EOF

source /home/spinnaker/.bashrc

Configure Armory to install in Kubernetes

Inside the container, use the Halyard hal command line tool to enable the Kubernetes cloud provider:

hal config provider kubernetes enable

Next, configure a Kubernetes account called spinnaker:

hal config provider kubernetes account add spinnaker \
  --provider-version v2 \
  --only-spinnaker-managed true \
  --service-account true \
  --namespaces spinnaker
  # Update the 'namespaces' field with your namespace if using a different namespace

This command uses the ServiceAccount associated with Halyard and Clouddriver, the default service account in this case.

Once you create an account (with account add), you can edit it by running the command with edit instead of add. Use the same flags.

For example, if you need to support multiple namespaces, you can run the following:

hal config provider kubernetes account edit spinnaker \
  --namespaces spinnaker,dev,stage,prod
  # Make sure to include all namespace you need to support

Important: These commands and parameters limit Armory to deploying to the spinnaker namespace. If you want to deploy to other namespaces, either add a second cloud provider target or grant the default service account in your namespace permissions on additional namespaces and change the --namespaces flag.

Use the Halyard hal command line tool to configure Halyard to install Armory in your Kubernetes cluster

hal config deploy edit \
  --type distributed \
  --account-name spinnaker \
  --location spinnaker
  # Update the 'location' parameter with your namespace, if relevant

Enable and configure the ‘Artifact’ feature

Within Armory, ‘artifacts’ are consumable references to items that live outside of Armory, such as a file in a git repository or a file in an S3 bucket. The Artifacts feature must be explicitly turned on.

The following commands enable the “Artifacts” feature, the new Artifact UI, and the “http” artifact provider:

hal config features edit --artifacts true
hal config features edit --artifacts-rewrite true
hal config artifact http enable

Although enabling the new Artifacts UI is optional, Armory recommends using it for better user experience.

In order to add specific types of artifacts, additional configuration must be completed. For now though, it is sufficient to turn on the artifacts feature with the http artifact provider. This allows Armory to retrieve files using unauthenticated http.

Configure Armory to access S3 with the IAM Role or User

Armory needs information about which bucket to access. Additionally, if you are using an IAM User to access the the bucket, Armory needs credentials for the IAM User.

# Update these snippets with the information for your bucket
export BUCKET_NAME=spinnaker-abcxyz
export REGION=us-west-2

# This will prompt for the secret key
hal config storage s3 edit \
  --bucket ${BUCKET_NAME} \
  --region ${REGION} \
  --no-validate

hal config storage edit --type s3

If you are using an IAM User, then provide Armory with the S3 credentials for your IAM User:

# Update this with the AWS Access Key ID
export ACCESS_KEY_ID=AKIAWWWWXXXXYYYYZZZZ

# This will prompt for the secret key
hal config storage s3 edit \
  --access-key-id ${ACCESS_KEY_ID} \
  --secret-access-key

By default, Halyard configures Armory to use the folder front50 in your S3 bucket. You can configure it to use a different folder with this command:

# Replace with the root folder within our bucket to use
ROOT_FOLDER=spinnaker_apps
hal config storage s3 edit \
  --root-folder ${ROOT_FOLDER}

Set up Gate to listen on the /api/v1 path

The Armory microservice “Gate” serves as the API gateway for Armory. Configure it to listen on a specific path rather than requiring different hosts or ports to differentiate it from the UI of Armory.

Create these two files (you may have to create several directories):

Create the file /home/spinnaker/.hal/default/profiles/gate-local.yml:

server:
  servlet:
    context-path: /api/v1

Create the file /home/spinnaker/.hal/default/service-settings/gate.yml:

healthEndpoint: /api/v1/health

You can copy/paste this snippet to automatically create these two files:

mkdir -p /home/spinnaker/.hal/default/{profiles,service-settings}

tee /home/spinnaker/.hal/default/profiles/gate-local.yml <<-'EOF'
server:
  servlet:
    context-path: /api/v1
EOF

tee /home/spinnaker/.hal/default/service-settings/gate.yml <<-'EOF'
healthEndpoint: /api/v1/health
EOF

Select the Armory version to install

Before you use Armory-extended Halyard to install Armory, specify the version of Armory you want to use. Make sure the version of Armory you want to install is compatible with the version of Armory-extended Halyard you are using.

You can get a list of available versions of Armory with this command:

hal version list

• If you are installing Armory using Armory-extended Halyard, the command returns a version that starts with 2.x.x

• If you are installing open source Spinnaker and using open source Halyard (installed from gcr.io/spinnaker-marketplace/halyard:stable), the command returns a version that starts with 1.x.x

Select the version with the following:

# Replace with version of choice:
export VERSION=$(hal version latest -q)
echo ${VERSION}
hal config version edit --version ${VERSION}

Install Armory

Now that our halconfig is configured, you can install Armory:

hal deploy apply --wait-for-completion

Once this is complete, congratulations! Armory is installed. Keep going to learn how to access Armory.

Connect to Armory using kubectl port-forward

If you have kubectl on a local machine with access to your Kubernetes cluster, you can test the status of your Armory instance by doing a port-forward.

First, tell Armory about its local endpoint for localhost:8084/api/v1:

hal config security api edit --override-base-url http://localhost:8084/api/v1

hal deploy apply --wait-for-completion

Wait for the pods get in a running state. Then, set up two port forwards, one for Gate (the API gateway) and one for Deck (the Armory UI):

NAMESPACE=spinnaker
kubectl -n ${NAMESPACE} port-forward svc/spin-deck 9000 &
kubectl -n ${NAMESPACE} port-forward svc/spin-gate 8084 &

Then, you can access Armory at http://localhost:9000.

If you are doing this on a remote machine, this does not work because your browser attempts to access localhost on your local workstation rather than on the remote machine where the port is forwarded.

Note: Even if the hal deploy apply command returns successfully, the installation may not be complete yet. This is especially the case with distributed Kubernetes installs. If you see errors such as Connection refused, the containers may not be available yet. Either wait or check the status of all of the containers using the command for our cloud provider (such as kubectl get pods --namespace spinnaker).

Ingress

There several ways to expose Armory, but there are a some basic requirements.

Given a domain name (or IP address) (such as spinnaker.domain.com or 55.55.55.55), you should be able to:

• Reach the spin-deck service at the root of the domain (http://spinnaker.domain.com or http://55.55.55.55)
• Reach the spin-gate service at the root of the domain (http://spinnaker.domain.com/api/v1 or http://55.55.55.55/api/v1)

You can use either http or https, as long as you use the same for both. Additionally, you have to configure Armory to be aware of its endpoints.

The Install the NGINX ingress controller section details how to do that with the NGINX ingress controller.

Install the NGINX ingress controller

In order to expose Armory to end users, perform the following actions:

• Expose the spin-deck (UI) Kubernetes service on a URL endpoint
• Expose the spin-gate (API) Kubernetes service on a URL endpoint
• Update Armory to be aware of the new endpoints

If you already have an ingress controller, use that ingress controller instead. You can check for the existence of the NGINX Ingress Controller by running kubectl get ns and looking for a namespace called ingress-nginx. If the namespace exists, you likely already have an NGINX Ingress Controller running in your cluster.

The following instructions walk you through how to install the NGINX ingress controller on AWS. This uses the Layer 4 ELB, as indicated in the NGINX ingress controller documentation. You can use other NGINX ingress controller configurations, such as the Layer 7 load balancer, based on your organization’s ingress policy.)

Both of these are configurable with Armory, but the NGINX ingress controller is also generally much more configurable.

From the workstation machine where kubectl is installed:

If you are using Kubernetes version 1.14 or later, install the NGINX ingress controller components:

kubectl --kubeconfig kubeconfig-gke apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v0.35.0/deploy/static/provider/cloud/deploy.yaml

If you are using a Kubernetes version earlier than 1.14, perform the following steps:

1. Download this NGINX file: mandatory.yaml

2. Change kubernetes.io/os to beta.kubernetes.io/os on line 217 of mandatory.yaml.

3. Run kubectl apply -f using the file you modified:

   kubectl apply -f <modified-mandatory-file>.yaml
   

Then, install the NGINX ingress controller AWS-specific service:

kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/static/provider/aws/service-l4.yaml
kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/static/provider/aws/patch-configmap-l4.yaml

Set up an Ingress for spin-deck and spin-gate

Get the external IP for the NGINX ingress controller:

kubectl get svc -n ingress-nginx

The command returns a DNS name or IP address in the EXTERNAL-IP field.

If you stood up a new NGINX ingress controller, you can likely use this value (IP address or DNS name) for your ingress.

For example, if the command returns abcd1234abcd1234abcd1234abcd1234-123456789.us-west-2.elb.amazonaws.com, then you can use abcd1234abcd1234abcd1234abcd1234-123456789.us-west-2.elb.amazonaws.com for the SPINNAKER_ENDPOINT in the following steps. If the command returns 55.55.55.55, then use 55.55.55.55 for the SPINNAKER_ENDPOINT.

If you use an existing NGINX ingress controller or other services are likely to be using the same NGINX ingress controller, create a DNS entry that points at the NGINX ingress controller endpoint you are using for Armory. You can create either a CNAME Record that points at the DNS name or an A Record that points at the IP address.

For the example abcd1234abcd1234abcd1234abcd1234-123456789.us-west-2.elb.amazonaws.com DNS name, do the following:

• Create a CNAME pointing spinnaker.domain.com at abcd1234abcd1234abcd1234abcd1234-123456789.us-west-2.elb.amazonaws.com
• Put spinnaker.domain.com in the host field in the below manifest and uncomment it
• Use spinnaker.domain.com for the SPINNAKER_ENDPOINT in the below steps
• (Alternately, for testing, create an /etc/hosts entry pointing spinnaker.domain.com at the IP address that abcd1234abcd1234abcd1234abcd1234-123456789.us-west-2.elb.amazonaws.com resolves to)

For the 55.55.55.55 IP address example, do the following:

• Create an A Record pointing to spinnaker.domain.com at 55.55.55.55
• Put spinnaker.domain.com in the host field in the below manifest and uncomment it
• Use spinnaker.domain.com for my SPINNAKER_ENDPOINT in the below steps
• (Alternately, for testing, create an /etc/hosts entry pointing spinnaker.domain.com at 55.55.55.55)

Create a Kubernetes Ingress manifest to expose spin-deck and spin-gate.

Create a file called spin-ingress.yml with the following content. If you are on Kubernetes 1.14 or above, you should replace extensions/v1beta1 with networking.k8s.io/v1.

(Make sure the hosts and namespace match your actual host and namespace.)

---
apiVersion: extensions/v1beta1
# apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: spin-ingress
  labels:
    app: spin
    cluster: spin-ingress
  annotations:
    kubernetes.io/ingress.class: "nginx"
spec:
  rules:
  -
    # host: spinnaker.some-url.com
    # ^ If we have other things running in our cluster, we should uncomment this line and specify a valid DNS name
    http:
      paths:
      - backend:
          serviceName: spin-deck
          servicePort: 9000
        path: /
      - backend:
          serviceName: spin-gate
          servicePort: 8084
        path: /api/v1

Apply the ingress file you just created:

kubectl -n spinnaker apply -f spin-ingress.yml

Configure Armory to be aware of its endpoints

Armory must be aware of its endpoints to work properly. Configuration updates vary depending upon whether you installed Armory using Operator or Halyard.

Operator

Update spinnakerservice.yml adding the security section:

spec:
  spinnakerConfig:
    config:
      security:
        apiSecurity:
          overrideBaseUrl: http://spinnaker.domain.com/api/v1  # Replace this with the IP address or DNS that points to our nginx ingress instance
        uiSecurity:
          overrideBaseUrl: http://spinnaker.domain.com         # Replace this with the IP address or DNS that points to our nginx ingress instance

Apply the changes:

kubectl -n spinnaker apply -f spinnakerservice.yml

Halyard

Run this command to get into the Halyard container:

kubectl -n spinnaker exec -it halyard-0 bash

Then, run the following command from inside the container:

SPINNAKER_ENDPOINT=http://spinnaker.domain.com
# ^ Replace this with the IP address or DNS that points to our nginx ingress instance

hal config security ui edit --override-base-url ${SPINNAKER_ENDPOINT}
hal config security api edit --override-base-url ${SPINNAKER_ENDPOINT}/api/v1

hal deploy apply

Configuring TLS certificates

Configuring TLS certificates for ingresses is often very environment-specific. In general, you want to do the following:

• Add certificate(s) so that our ingress controller can use them
• Configure the ingress(es) so that NGINX (or the load balancer in front of NGINX, or your alternative ingress controller) terminates TLS using the certificate(s)
• Update Armory to be aware of the new TLS endpoints, by replacing http by https to override the base URLs in the previous section.

Next steps

Now that Armory is running, here are potential next steps:

• Configuration of certificates to secure our cluster (see this section for notes on this)
• Configuration of Authentication/Authorization (see the Open Source Spinnaker documentation)
• Add Kubernetes accounts to deploy applications to (see Creating and Adding a Kubernetes Account to Armory as a Deployment Target)
• Add GCP accounts to deploy applications to (see the Open Source Spinnaker documentation)
• Add AWS accounts to deploy applications to (see the Open Source Spinnaker documentation)

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