# How to Operate Infra and Apps with the OSM Declarative Framework

The tutorial assumes that you have added a VIM/Cloud account to OSM.

```bash
export OSM_HOSTNAME=$(kubectl get -n osm -o jsonpath="{.spec.rules[0].host}" ingress nbi-ingress)
```

Create a cluster:

```bash
CLUSTER_NAME=mydemo
CLUSTER_VM_SIZE=Standard_D2_v2
CLUSTER_NODES=2
REGION_NAME=northeurope
VIM_ACCOUNT=azure-site
RESOURCE_GROUP=<AZURE_RG>
KUBERNETES_VERSION="1.30"
osm cluster-create --node-count ${CLUSTER_NODES} --node-size ${CLUSTER_VM_SIZE} --version ${KUBERNETES_VERSION} --vim-account ${VIM_ACCOUNT} --description "Mydemo cluster" ${CLUSTER_NAME} --region-name ${REGION_NAME} --resource-group ${RESOURCE_GROUP}
```

Check progress:

```bash
osm cluster-list
```

When the cluster is created, the field `resourceState` should be `READY`.

Get credentials:

```bash
osm cluster-show mydemo -o jsonpath='{.credentials}' | yq -P > ~/kubeconfig-mydemo.yaml
export KUBECONFIG=~/kubeconfig-mydemo.yaml
# Check that the credentials work
kubectl get nodes
```

Refreshing credentials in case they are renewed by the cloud policy:

```bash
osm cluster-get-credentials mydemo > ~/kubeconfig-mydemo.yaml
export KUBECONFIG=~/kubeconfig-mydemo.yaml
```

OKA addition:

```bash
export OSM_PACKAGES_FOLDER="${HOME}/osm-packages"
export OKA_FOLDER="${OSM_PACKAGES_FOLDER}/oka/apps"
osm oka-add jenkins ${OKA_FOLDER}/jenkins --description jenkins --profile-type app-profile
osm oka-add testapp ${OKA_FOLDER}/testapp --description testapp --profile-type app-profile
osm oka-add testacme ${OKA_FOLDER}/testacme --description testacme --profile-type app-profile
```

Check the progress:

```bash
osm oka-list
```

When the OKAs are created, the field `resourceState` should be `READY`.

KSU creation:

```bash
osm ksu-create --ksu testapp --profile mydemo --profile-type app-profile --oka testapp --params ${OKA_FOLDER}/testapp-params.yaml
osm ksu-create --ksu testacme --profile mydemo --profile-type app-profile --oka testacme --params ${OKA_FOLDER}/testacme-params.yaml
osm ksu-create --ksu jenkins --description "Jenkins" --profile mydemo --profile-type app-profile --oka jenkins --params ${OKA_FOLDER}/jenkins-params.yaml
```

Check the progress:

```bash
osm ksu-list
```

When the KSUs are created, the field `resourceState` should be `READY`.

Check in the destination cluster:

```bash
export KUBECONFIG=~/kubeconfig-mydemo.yaml
watch "kubectl get ns; echo; kubectl get ks -A; echo; kubectl get hr -A"
watch "kubectl get all -n testapp"
watch "kubectl get all -n testacme"
watch "kubectl get all -n jenkins"
```

KSU deletion:

```bash
osm ksu-delete testapp
osm ksu-delete testacme
osm ksu-delete jenkins
```

Cluster scale:

```bash
CLUSTER_NAME=mydemo
osm cluster-scale ${CLUSTER_NAME} --node-count 3
```

Check progress:

```bash
osm cluster-list
```

When the cluster is created, the field `resourceState` should be `READY`.

Cluster deletion:

```bash
osm cluster-delete ${CLUSTER_NAME}
```