# Heimdall

## Basic stuff

### Install

```shell
helm install heimdall ./helm --namespace heimdall --create-namespace
```

### Update

```shell
helm -n heimdall upgrade heimdall .\helm\
```

### Check

```shell
kubectl -n heimdall get cm,pvc,pod,svc
```

### Tail Log

```shell
kubectl -n heimdall logs -f heimdall-0
```

### Delete

```shell
kubectl delete ns heimdall
```

## Immigration

We need to find the location for the files

### Step 1

```shell
kubectl -n heimdall get pvc data-heimdall-0 -o wide
```

Output:

```
NAME              STATUS   VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS        VOLUMEATTRIBUTESCLASS   AGE   VOLUMEMODE
data-heimdall-0   Bound    pvc-b84dce5e-bc04-456c-83c1-6f6f5f326040   1Gi        RWO            microk8s-hostpath   <unset>                 1m    Filesystem
```

we need the volume name in this case `pvc-b84dce5e-bc04-456c-83c1-6f6f5f326040`

### Step 2

```shell
kubectl get pv pvc-b84dce5e-bc04-456c-83c1-6f6f5f326040 -o yaml
```

Output:

```
apiVersion: v1
kind: PersistentVolume
metadata:
  ...
spec:
  accessModes:
  - ReadWriteOnce
  capacity:
    storage: 1Gi
  claimRef:
    ...
  hostPath:
    path: /var/snap/microk8s/common/default-storage/heimdall-data-heimdall-0-pvc-b84dce5e-bc04-456c-83c1-6f6f5f326040
    type: DirectoryOrCreate
  nodeAffinity:
    ...
  persistentVolumeReclaimPolicy: Delete
  storageClassName: microk8s-hostpath
  volumeMode: Filesystem
status:
  ...
```

We need `spec -> hostPath -> path` in this case `/var/snap/microk8s/common/default-storage/heimdall-data-heimdall-0-pvc-b84dce5e-bc04-456c-83c1-6f6f5f326040`

### Step 2

Login to the old server. and use rsync, don't forget stuff like puid, pgid, file access and stuff.

```shell
rsync -avz -e ssh ./ username@0.0.0.0:/var/snap/microk8s/common/default-storage/heimdall-data-heimdall-0-pvc-b84dce5e-bc04-456c-83c1-6f6f5f326040
```