Track longhorn notes, eventhough it blew up.

notes.md

@@ -204,6 +204,36 @@ tkn pr describe --namespace j7s-ci --last -o jsonpath="{.metadata.annotations.ch
 tkn pr describe --namespace j7s-ci --last -o jsonpath="{.metadata.annotations.chains\.tekton\.dev/payload-pipelinerun-$TASKRUN_UID}" | base64 -d > payload
 ```
 
+## Longhorn
+
+Postgres did not like NFS show I'm trying Longhorn.
+Added Centos Node to cluster. Disabled firewalld and selinux...
+
+Label k3s-nfs for storage using longhorn:
+```
+kubectl label nodes k3s-nfs node.longhorn.io/create-default-disk=true
+```
+Install longhorn using helm and only putting storage on disk with that
+label:
+```
+helm repo add longhorn https://charts.longhorn.io
+helm repo update
+helm install longhorn longhorn/longhorn --namespace longhorn-system --create-namespace --set defaultSettings.createDefaultDiskLabeledNodes=true
+```
+On rhel nfs host:
+```
+sudo dnf install libiscsi iscsi-initiator-util
+sudo su
+echo "InitiatorName=$(/sbin/iscsi-iname)" > /etc/iscsi/initiatorname.iscsi
+systemctl enable iscsid
+systemctl start iscsid
+```
+On all nodes:
+```
+sudo apt install open-iscsi
+```
+
+
 # Future Ideas
 
 If we later want to do this on an overlay network: