diff --git a/doc/k8s-testing.md b/doc/k8s-testing.md
index d3f6a3c..0777fef 100644
--- a/doc/k8s-testing.md
+++ b/doc/k8s-testing.md
@@ -16,17 +16,20 @@
       * [Config Map](#config-map)
       * [Stateful Set](#stateful-set)
       * [Service](#service)
+    * [Cassandra](#cassandra)
+      * [Stateful Set](#stateful-set-1)
+      * [Service](#service-1)
   * [Hlæja](#hlæja)
     * [Account Register](#account-register)
       * [Secret](#secret-1)
       * [Config Map](#config-map-1)
       * [Deployment](#deployment)
-      * [Service](#service-1)
+      * [Service](#service-2)
     * [Device Register](#device-register)
       * [Secret](#secret-2)
       * [Config Map](#config-map-2)
       * [Deployment](#deployment-1)
-      * [Service](#service-2)
+      * [Service](#service-3)
 <!-- TOC -->
 
 ----
@@ -167,6 +170,57 @@ kubectl apply -f .\kube\02-databases\01-postgres\04-service.yaml
 
 ---
 
+### Cassandra
+
+For now... run basic cassandra, we need to add authentication later.
+
+to get a clean cassandra configuration:
+
+```bash
+docker run --rm cassandra:5.0 cat /etc/cassandra/cassandra.yaml > cassandra-default.yaml
+```
+
+modify `authenticator` and `authorizer` and som how get that change inside... local file get to big 262144 bytes limitation.
+
+some help things for later
+
+```bashe
+kubectl exec -it -n hlaeja cassandra-0 -- bash
+```
+
+run one of this
+
+```bash
+nodetool status
+```
+
+or
+
+```bash
+cqlsh
+SELECT data_center FROM system.local;
+```
+
+#### Stateful Set
+
+This is the specifications for cassandra.
+
+```bash
+kubectl apply -f .\kube\02-databases\02-cassandra\01-statefulset.yaml
+```
+
+Set storage size for permanent storage
+
+#### Service
+
+this exposes port and ip.
+
+```bash
+kubectl apply -f .\kube\02-databases\02-cassandra\02-service.yaml
+```
+
+---
+
 ## Hlæja
 
 ### Account Register
diff --git a/kube/02-databases/02-cassandra/01-statefulset.yaml b/kube/02-databases/02-cassandra/01-statefulset.yaml
new file mode 100644
index 0000000..5c52526
--- /dev/null
+++ b/kube/02-databases/02-cassandra/01-statefulset.yaml
@@ -0,0 +1,38 @@
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: cassandra
+  namespace: hlaeja
+  labels:
+    app: cassandra
+    environment: testing
+    tier: database
+spec:
+  serviceName: cassandra
+  replicas: 1
+  selector:
+    matchLabels:
+      app: cassandra
+  template:
+    metadata:
+      labels:
+        app: cassandra
+    spec:
+      terminationGracePeriodSeconds: 1800
+      containers:
+        - name: cassandra
+          image: cassandra:5.0.4
+          ports:
+            - containerPort: 9042
+          volumeMounts:
+            - name: cassandra-data
+              mountPath: /var/lib/cassandra
+  volumeClaimTemplates:
+    - metadata:
+        name: cassandra-data
+      spec:
+        accessModes:
+          - ReadWriteOnce
+        resources:
+          requests:
+            storage: 10Gi
diff --git a/kube/02-databases/02-cassandra/02-service.yaml b/kube/02-databases/02-cassandra/02-service.yaml
new file mode 100644
index 0000000..0d14deb
--- /dev/null
+++ b/kube/02-databases/02-cassandra/02-service.yaml
@@ -0,0 +1,21 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: cassandra
+  namespace: hlaeja
+  labels:
+    app: cassandra
+    environment: testing
+    tier: database
+  annotations:
+    metallb.universe.tf/address-pool: default
+spec:
+  type: LoadBalancer
+  loadBalancerIP: 10.0.3.142
+  selector:
+    app: cassandra
+  ports:
+    - port: 9042
+      targetPort: 9042
+      protocol: TCP
+      name: cql