CLI interface management (snap/2.8/UI)

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The following document provides a list of interface management tasks which can be performed by the MAAS CLI.

Quick questions you may have:

Interface identifiers

The MAAS CLI uses a numeric interface identifier for many interface operations. Use the following command to retrieve the identifier(s):

maas $PROFILE interfaces read $SYSTEM_ID

Look for either id or the number at the end of an interface’s resource URI, such as 15 in the following example output:

"id": 15,
"mac_address": "52:54:00:55:06:40",
...
"name": "ens9",
...
"resource_uri": "/MAAS/api/2.0/nodes/4efwb4/interfaces/15/"

Create a Bond interface

A bond interface is used to aggregate two or more more physical interfaces into a single logical interface. A bond can be created with the following command:

maas $PROFILE interfaces create-bond $SYSTEM_ID name=$BOND_NAME \
parents=$IFACE1_ID mac_address=$MAC_ADDR \ 
parents=$IFACE2_ID bond_mode=$BOND_MODE \
bond_updelay=$BOND_UP bond_downdelay=$BOND_DOWN mtu=$MTU

Use the ‘parents’ parameters to define which interfaces form the aggregate interface.

The ‘bond_updelay’ and ‘bond_downdelay’ parameters specify the number of milliseconds to wait before either enabling or disabling a slave after a failure has been detected.

The following is an example of ‘create-bond’ in action:

maas admin interfaces create-bond 4efwb4 name=bond0 parents=4 \
mac_address=52:52:00:00:00:00 parents=15 bond_mode=802.3ad \
bond_updelay=200 bond_downdelay=200 mtu=9000

See Bond interfaces for details on supported bond modes and their actions.

Create a Bridge interface

A bridge interface is created with the following syntax:

maas $PROFILE interfaces create-bridge $SYSTEM_ID name=$BRIDGE_NAME \
parent=$IFACE_ID

Use ‘parent’ to define the primary interface used for the bridge:

maas admin interfaces create-bridge 4efwb4 name=bridged0 parent=4

Delete an interface

The ‘delete’ command can be used to delete a bridge interface, a bond interface or a physical interface:

maas $PROFILE interface delete $SYSTEM_ID $IFACE_ID

For example:

maas admin interface delete 4efwb4 15

The following is output after the successful deletion of an interface:

Success.
Machine-readable output follows:

There is no machine-readable output after the successful execution of the delete command.

Create a VLAN interface

To create a VLAN interface, use the following syntax:

maas $PROFILE vlans create $FABRIC_ID name=$NAME vid=$VLAN_ID

For example, the following command creates a VLAN called 'Storage network:

maas admin vlans create 0 name="Storage network" vid=100

The above command generates the following output:

Success.
Machine-readable output follows:
{
    "vid": 100,
    "mtu": 1500,
    "dhcp_on": false,
    "external_dhcp": null,
    "relay_vlan": null,
    "name": "Storage network",
    "space": "undefined",
    "fabric": "fabric-0",
    "id": 5004,
    "primary_rack": null,
    "fabric_id": 0,
    "secondary_rack": null,
    "resource_uri": "/MAAS/api/2.0/vlans/5004/"
}

Be aware that the $VLAN_ID parameter does not indicate a VLAN ID that corresponds to the VLAN tag. You must first create the VLAN and then associate it with the interface:

maas $PROFILE interfaces create-vlan $SYSTEM_ID vlan=$OUTPUT_VLAN_ID \
parent=$IFACE_ID

OUTPUT_VLAN_ID corresponds to the id value output when MAAS created the VLAN.

The following example contains values that correspond to the output above:

maas admin interfaces create-vlan 4efwb4 vlan=5004 parent=4

The above command generates the following output:

Success.
Machine-readable output follows:
{
    "tags": [],
    "type": "vlan",
    "enabled": true,
    "system_id": "4efwb4",
    "id": 21,
    "children": [],
    "mac_address": "52:54:00:eb:f2:29",
    "params": {},
    "vlan": {
        "vid": 100,
        "mtu": 1500,
        "dhcp_on": false,
        "external_dhcp": null,
        "relay_vlan": null,
        "id": 5004,
        "secondary_rack": null,
        "fabric_id": 0,
        "space": "undefined",
        "fabric": "fabric-0",
        "name": "Storage network",
        "primary_rack": null,
        "resource_uri": "/MAAS/api/2.0/vlans/5004/"
    },
    "parents": [
        "ens3"
    ],
    "effective_mtu": 1500,
    "links": [
        {
            "id": 55,
            "mode": "link_up"
        }
    ],
    "discovered": null,
    "name": "ens3.100",
    "resource_uri": "/MAAS/api/2.0/nodes/4efwb4/interfaces/21/"
}

Delete a VLAN interface

The following command outlines the syntax required to delete a VLAN interface from the command line:

maas $PROFILE vlan delete $FABRIC__ID $VLAN_ID

Using the values from previous examples, you executed this step as follows:

maas admin vlan delete 0 100