Note: This has been tested with Flocker 1.6.1.

• A physical or virtual clustered Data ONTAP system
• A storage virtual machine (SVM) using iSCSI
• A Linux machine running Flocker

1. Install the following system packages on your system:

   • RHEL / CentOS

     • lsscsi
     • iscsi-initiator-utils
     • sg3_utils
     • device-mapper-multipath
     • python-devel - needed for lxml
     • libxml2-devel - needed for lxml
     • libxslt-devel - needed for lxml

sudo yum install -y lsscsi iscsi-initiator-utils sg3_utils device-mapper-multipath python-devel libxml2-devel libxslt-devel

2. Start the multi-pathing daemon:

sudo mpathconf --enable --with_multipathd y

3. Ensure that iscsid, and multipathd are enabled and running:

sudo systemctl enable iscsid multipathd
sudo systemctl start iscsid multipathd

4. Discover the iSCSI targets:

sudo iscsiadm -m discoverydb -t st -p <DATA_LIF_IP> --discover

5. Login to the discovered iSCSI targets:

sudo iscsiadm -m node -p <DATA_LIF_IP> --login

6. Start and enable iscsi:

sudo systemctl enable iscsi
sudo systemctl start iscsi

6. Install the NetApp clustered Data ONTAP plugin:

sudo /opt/flocker/bin/pip install git+https://github.com/NetApp/netapp-flocker-driver.git

Modify the Flocker agent configuration file at /etc/flocker/agent.yml and add the following backend:

dataset:
  backend: "netapp_flocker_driver"
  username: <USERNAME>
  password: <PASSWORD>
  hostname: <HOSTNAME>
  vserver: <VSERVER>
  poolname: <POOLNAME>

Replace the following values:

• <USERNAME> = Your username
• <PASSWORD> = Your password
• <HOSTNAME> = The cluster IP
• <VSERVER> = The Storage Virtual Machine (SVM)
• <POOLNAME> = The volume where LUNs will be created

Restart the flocker-dataset-agent to pick up your changes.