Deleting StorageOS Objects

When a Kubernetes object is deleted, StorageOS controllers automatically sync this deletion to StorageOS. For example, when a Kubernets node is deleted, this will automatically be mirrored in StorageOS, likewise with Namespaces.

Here is a StorageOS node, running on Kubernetes node worker1. A StorageOS node is any machine that is running the StorageOS daemonset pod. The node is visible below in kubectl.

$ kubectl describe -n kube-system pod storageos-daemonset-6q4g8
Name:                 storageos-daemonset-6q4g8
Namespace:            kube-system
Priority:             2000001000
Priority Class Name:  system-node-critical
Node:                 worker1/192.168.152.238
Start Time:           Thu, 06 May 2021 15:53:34 +0100
Labels:               app=storageos
                      app.kubernetes.io/component=storageos-daemonset
                      app.kubernetes.io/instance=example-storageos
                      app.kubernetes.io/managed-by=storageos-operator
                      app.kubernetes.io/name=storageos
                      app.kubernetes.io/part-of=storageos
                      controller-revision-hash=f5dcf577d
                      kind=daemonset
                      pod-template-generation=1
                      storageos_cr=example-storageos
Annotations:          kubectl.kubernetes.io/default-logs-container: storageos
Status:               Running
IP:                   192.168.152.238
...

The nodes in your cluster can be seen with storageos get nodes.

$ storageos get nodes
NAME          HEALTH  AGE        LABELS                              
worker1       online  1 day ago  beta.kubernetes.io/arch=amd64,      
                                 beta.kubernetes.io/os=linux,        
                                 cattle.io/creator=norman,           
                                 kubernetes.io/arch=amd64,           
                                 kubernetes.io/hostname=worker1,
                                 kubernetes.io/os=linux,             
                                 node-role.kubernetes.io/worker=true
                                 storageos.com/computeonly=true 
worker2       online  1 day ago  beta.kubernetes.io/arch=amd64,      
                                 beta.kubernetes.io/os=linux,        
                                 cattle.io/creator=norman,           
                                 kubernetes.io/arch=amd64,           
                                 kubernetes.io/hostname=worker2,
                                 kubernetes.io/os=linux,             
                                 node-role.kubernetes.io/worker=true 
worker3       online  1 day ago  beta.kubernetes.io/arch=amd64,      
                                 beta.kubernetes.io/os=linux,        
                                 cattle.io/creator=norman,           
                                 kubernetes.io/arch=amd64,           
                                 kubernetes.io/hostname=worker3,
                                 kubernetes.io/os=linux,             
                                 node-role.kubernetes.io/worker=true
...

Delete the node.
```
$ kubectl delete node worker1
```

Verify that the node has been deleted with kubectl get nodes or storageos get nodes. The node has now disappeared from StorageOS.

$ storageos get nodes
NAME          HEALTH  AGE        LABELS                              
worker2       online  1 day ago  beta.kubernetes.io/arch=amd64,      
                                 beta.kubernetes.io/os=linux,        
                                 cattle.io/creator=norman,           
                                 kubernetes.io/arch=amd64,           
                                 kubernetes.io/hostname=worker2,
                                 kubernetes.io/os=linux,             
                                 node-role.kubernetes.io/worker=true 
worker3       online  1 day ago  beta.kubernetes.io/arch=amd64,      
                                 beta.kubernetes.io/os=linux,        
                                 cattle.io/creator=norman,           
                                 kubernetes.io/arch=amd64,           
                                 kubernetes.io/hostname=worker3,
                                 kubernetes.io/os=linux,             
                                 node-role.kubernetes.io/worker=true 
...