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-# Migrate Azure Shoot Load Balancer from basic to standard SKU
-
-This guide descibes how to migrate the Load Balancer of an Azure Shoot cluster from the basic SKU to the standard SKU.<br/>
-**Be aware:** You need to delete and recreate all services of type Load Balancer, which means that the public ip addresses of your service endpoints will change.<br/>
-Please do this only if the Stakeholder really needs to migrate this Shoot to use standard Load Balancers. All new Shoot clusters will automatically use Azure Standard Load Balancers.
-
-1. Disable temporarily Gardeners reconciliation.<br>
-The Gardener Controller Manager need to be configured to allow ignoring Shoot clusters.
-This can be configured in its the `ControllerManagerConfiguration` via the field `.controllers.shoot.respectSyncPeriodOverwrite="true"`.
-
-```sh
-# In the Garden cluster.
-kubectl annotate shoot <shoot-name> shoot.garden.sapcloud.io/ignore="true"
-
-# In the Seed cluster.
-kubectl -n <shoot-namespace> scale deployment gardener-resource-manager --replicas=0
-```
-
-2. Backup all Kubernetes services of type Load Balancer.
-```sh
-# In the Shoot cluster.
-# Determine all Load Balancer services.
-kubectl get service --all-namespaces | grep LoadBalancer
-
-# Backup each Load Balancer service.
-echo "---" >> service-backup.yaml && kubectl -n <namespace> get service <service-name> -o yaml >> service-backup.yaml
-```
-
-3. Delete all Load Balancer services.
-```sh
-# In the Shoot cluster.
-kubectl -n <namespace> delete service <service-name>
-```
-
-4. Wait until until Load Balancer is deleted.
-Wait until all services of type Load Balancer are deleted and the Azure Load Balancer resource is also deleted.
-Check via the Azure Portal if the Load Balancer within the Shoot Resource Group has been deleted.
-This should happen automatically after all Kubernetes Load Balancer service are gone within a few minutes.
-
-Alternatively the Azure cli can be used to check the Load Balancer in the Shoot Resource Group.
-The credentials to configure the cli are available on the Seed cluster in the Shoot namespace.
-```sh
-# In the Seed cluster.
-# Fetch the credentials from cloudprovider secret.
-kubectl -n <shoot-namespace> get secret cloudprovider -o yaml
-
-# Configure the Azure cli, with the base64 decoded values of the cloudprovider secret.
-az login --service-principal --username <clientID> --password <clientSecret> --tenant <tenantID>
-az account set -s <subscriptionID>
-
-# Fetch the constantly the Shoot Load Balancer in the Shoot Resource Group. Wait until the resource is gone.
-watch 'az network lb show -g shoot--<project-name>--<shoot-name> -n shoot--<project-name>--<shoot-name>'
-
-# Logout.
-az logout
-```
-
-5. Modify the `cloud-povider-config` configmap in the Seed namespace of the Shoot.<br/>
-The key `cloudprovider.conf` contains the Kubernetes cloud-provider configuration.
-The value is a multiline string. Please change the value of the field `loadBalancerSku` from `basic` to `standard`.
-Iff the field does not exists then append `loadBalancerSku: \"standard\"\n` to the value/string.
-```sh
-# In the Seed cluster.
-kubectl -n <shoot-namespace> edit cm cloud-provider-config
-```
-
-6. Enable Gardeners reconcilation and trigger a reconciliation.
-```
-# In the Garden cluster
-# Enable reconcilation
-kubectl annotate shoot <shoot-name> shoot.garden.sapcloud.io/ignore-
-
-# Trigger reconcilation
-kubectl annotate shoot <shoot-name> shoot.garden.sapcloud.io/operation="reconcile"
-```
-Wait until the cluster has been reconciled.
-
-6. Recreate the services from the backup file.<br/>
-Probably you need to remove some fields from the service defintions e.g. `.spec.clusterIP`, `.metadata.uid` or `.status` etc.
-```sh
-kubectl apply -f service-backup.yaml
-```
-
-7. If successful remove backup file.
-```sh
-# Delete the backup file.
-rm -f service-backup.yaml
-```
-