ONTAP Configuration¶

ONTAP Prerequisites¶

The prerequisites for ONTAP are:

The driver requires a storage controller running ONTAP 8.2 or later.
The storage system should have the following licenses applied:
- Base
- NFS (if the NFS storage protocol is to be used)
- CIFS (if the CIFS/SMB storage protocol is to be used)
- SnapMirror (if share replication is to be enabled)
- FlexClone

Storage Virtual Machine Considerations¶

When using the NetApp Manila driver in the mode where it does not manage share servers, it is important to pay attention to the following considerations:

Ensure the appropriate licenses (as described previously) are enabled on the storage system for the desired use case.
The SVM referenced in the netapp_vserver option must be created (and associated with aggregates) before it can be utilized as a provisioning target for Manila. If cluster-level credentials have not been specified in the configuration file, ensure that no root aggregates are associated with the SVM, since the driver will not be able to guarantee that automatically.
Data LIFs must be created and assigned to SVMs before configuring Manila.
If NFS is used as the storage protocol:
1. Be sure to enable the NFS service on the SVM.
2. Be sure to enable the desired version of the NFS protocol (e.g. v4.0, v4.1-pnfs) on the SVM.
If CIFS is used as the storage protocol:
1. Be sure to enable the CIFS service on the SVM.
2. Be sure to set CIFS as the data protocol on the data LIF.
In order to support share replication:
1. Ensure all ONTAP clusters with the same replication_domain are peered, have intercluster LIFs configured, and are of equal ONTAP versions.
2. Ensure all SVMs with the same replication_domain are peered and have unique names.
3. For more information about ONTAP data protection, please see the ONTAP 9 Product Documentation.
If setting up Manila without share servers, ensure that one or more aggregates are permitted to be used by the SVM. Use vserver show -vserver <vserver> -fields aggr-list to see which aggregates are all ready assigned. You can use vserver add-aggregates -vserver <vserver> -aggregates <first aggr,second aggr> to add aggregates to your SVM that Manila will be able to use.
If you wish to assign QoS policies to Manila shares, do not assign the SVM used to a QoS policy group on ONTAP. Manila shares correspond to FlexVols on ONTAP and FlexVols are constituents of an SVM. ONTAP does not support nested QoS policies.

Account Permission Considerations¶

When configuring NetApp’s Manila drivers to interact with an ONTAP instance, it is important to choose the correct administrative credentials to use.

While an account with cluster-level administrative permissions is normally utilized, it is possible to use an account with reduced scope that has the appropriate privileges granted to it. In order to use an SVM-scoped account with the Manila driver and ONTAP and have access to the full set of features (including Manila Share Type Extra Specs support) availed by the Manila driver, be sure to add the access levels for the commands shown in Table 6.17, “Common Access Level Permissions Required with Any Manila Driver”, Table 6.18, “Access Level Permissions Required For Manila Driver for ONTAP with share server management - with Cluster-wide Administrative Account”, and Table 6.19, “Access Level Permissions Required For Manila Driver for ONTAP without share server management - with Cluster-wide Administrative Account”.

Note

The commands listed in the tables below are for ONTAP 9 releases.

Command	Access Level
`vserver cifs share`	`all`
`event`	`all`
`network interface`	`readonly`
`vserver export-policy`	`all`
`volume snapshot`	`all`
`version`	`readonly`
`system node`	`readonly`
`volume`	`all`
`vserver`	`readonly`
`security`	`readonly`
`statistics`	`all`

Table 6.17. Common Access Level Permissions Required with Any Manila Driver

Command	Access Level
`vserver cifs create`	`all`
`vserver cifs delete`	`all`
`vserver nfs kerberos interface`	`all`
`vserver nfs kerberos realm`	`all`
`vserver services name-service ldap client`	`all`
`vserver services name-service ldap create`	`all`
`license`	`readonly`
`vserver services name-service dns create`	`all`
`network interface`	`all`
`network port`	`readonly`
`network port vlan`	`all`
`vserver`	`all`
`qos policy-group`	`all`

Table 6.18. Access Level Permissions Required For Manila Driver for ONTAP with share server management - with Cluster-wide Administrative Account

Command	Access Level
`license`	`readonly`
`storage aggregate`	`readonly`
`storage disk`	`readonly`
`qos policy-group`	`all`

Table 6.19. Access Level Permissions Required For Manila Driver for ONTAP without share server management - with Cluster-wide Administrative Account

Creating Role for Cluster-Scoped Account¶

To create a role with the necessary privileges required, with access via ONTAP API only, use the following command syntax to create the role and the ONTAP user:

Create role with appropriate command directory permissions (note you will need to execute this command for each of the required access levels as described in the earlier tables).
```
security login role create –role openstack –cmddirname [required command from earlier tables] -access [Required Access Level]
```

Command to create user with appropriate role

security login create –username openstack –application ontapi –authmethod password –role openstack

Creating Role for SVM-Scoped Account¶

To create a role with the necessary privileges required, with access via ONTAP API only, use the following command syntax to create the role and the ONTAP user:

Create role with appropriate command directory permissions (note you will need to execute this command for each of the required access levels as described in the earlier tables).
```
security login role create –role openstack -vserver [vserver_name] –cmddirname [required command from earlier tables] -access [Required Access Level]
```

Command to create user with appropriate role

security login create –username openstack –application ontapi –authmethod password –role openstack -vserver [vserver_name]

Tip

For more information on how to grant access level permissions to a role, and then assign the role to an administrative account, please refer to the System Administration Guide for Cluster Administrators document in the ONTAP documentation.

Note

SVM-Scoped user accounts do not support the configuration of the reserved_share_percentage config option. SVM-Scoped user accounts can only work if the option is set to 0.

Storage Networking Considerations¶

Ensure there is segmented network connectivity between the hypervisor nodes and the Data LIF interfaces from ONTAP.
LIF assignment