ISCSI target pod for OpenShift testings.

Target Setup

ISCSI target setup needs to run a privileged container with SYS_MODULE capability and /lib/modules mount directory. First edit the scc.yml, replace YOUR_USERNAME with your OpenShift login, then run:

oc create -f scc.yml
oc create -f iscsi-target.json

Verify iscsi setup is successful

After pod is Running, run oc exec iscsi-target -- targetcli ls /iscsi/iqn.2016-04.test.com:storage.target00/tpg1, you should see

</iqn.2016-04.test.com:storage.target00/tpg1/portals
o- portals  [Portals: 1]
  o- 10.1.1.3:3260  [OK]
>

Initiator Setup

Initiator must be setup properly on every node of your cluster, run the following commands on your nodes:

echo 'InitiatorName=iqn.2016-04.test.com:test.img' > /etc/iscsi/initiatorname.iscsi

cat >> /etc/iscsi/iscsid.conf <<EOF
node.session.auth.authmethod = CHAP
node.session.auth.username = 5f84cec2
node.session.auth.password = b0d324e9
EOF

systemctl enable iscsid
systemctl start iscsid

Setup iscsi initiator with podIP

After you have completed the target setup, you should have got the iscsi-target pod ip, let's assume the ip is 10.2.0.2, then on every node of your cluster run:

iscsiadm -m discovery -t sendtargets -p 10.2.0.2
iscsiadm -m node -p 10.2.0.2:3260 -T iqn.2016-04.test.com:storage.target00 -I default --login

You should be able to successfully login.

Setup iscsi initiator with service

you could also use a service ip instead of podIP.

1. Create the service

oc create -f service.json

2. Get the service ip oc get service iscsi-target, assume the ip is 172.30.50.235.

3. Create a portal in the iscsi-target pod using the service ip

oc exec iscsi-target -- targetcli /iscsi/iqn.2016-04.test.com:storage.target00/tpg1/portals create 172.30.50.235

4. On nodes, configure iscsi initiator with the service ip

iscsiadm -m discovery -t sendtargets -p 172.30.50.235
iscsiadm -m node -p 172.30.50.235:3260 -T iqn.2016-04.test.com:storage.target00 -I default --login

Creating Persistent Volume and Claim

Update your Persistent Volume template, set targetPortal to your podIP or service ip.

oc create -f pv-rwo.json
oc create -f pvc-rwo.json
oc get pv
oc get pvc

You should see PV and PVC are bound to each other.

Creating tester pod

oc create -f pod.json

You should see your pod is Running.