Container Storage

Prerequisite

From Topology view, click Duke icon (backend deployment), in backend deployment view, select Resources Tab
Click link of pod name in Pods section
in Pod Details, select Terminal Tab to enable Terminal to container

In terminal console, test create file in container

cd /opt
echo 'This is a test' > data.txt
cat /opt/data.txt

example

scale down backend application to 0, back to topology, click Duke icon, in details tab of backend Deployment, click scale down to 0
after scale to 0 complete, scale up backend application to 1 again
Recheck data in container, click at resource tab in backend deployment, select pod 'backend-xxx-xxx' link in Pods section
in pod details, select terminal tabs to activate terminal console to pod
re test with below command, data.txt not found in current container becouse we don't have persistent storage for it.
```
cd /opt
ls
cat /opt/data.txt
```
example output

back to topology, click Duke icon to open backend deployment panel, select action menu dropdownlist, select add storage
in add storage, select
- Persistent Volume Claim: create new claim
- storage class: gp2
- Persistent Volume Claim Name: 'userx-cliam' (change userx to your user name)
- access mode: Single User(RWO)
- size: 1 GiB
- Volume Mode: Filesystem
- Mount Path: /data example result
click save and wait until backend redeploy complete
in backend deployment, go to pods tabs, select pod name link 'backend-xxx-xxx'
go to terminal tab again to open terminal to container, create file again for test persistent
```
cd /data
echo 'This is a test' > data.txt
cat /data/data.txt
```
example output
bact to topology, click duke icon, in Details Tab, scale down backend deployment to 0 and scale up to 1 again (wait until scale complete before go to next step)
go to pod terminal again, go to Resources Tab, click pod link 'backend-xxx-xxx' in pod section
go to terminal tab to open terminal and retest with below command
```
cd /data
ls
cat data.txt
```
example output, you will found data.txt