Creating an Interface Team
Course Development Director in Content
In this hands-on lab, we've got to create an interface team. The host we've been provided with has three network interface cards, and it should be configured to use the two extras in a round robin manner.
Creating an Interface Team
Our supervisor has asked us to prepare a new application server. The primary interface
eth0 has an IP of
10.0.1.11 and will be used for internal management. It should not be modified.
But we need to configured the following other two interfaces,
eth2 to be part of a team:
- The interface team connection name will be
- The interface team interface name is
round robinis the interface team mode we'll use
- It will have a static IP range
- We'll use the gateway from DHCP
Get logged in
Use the credentials and server IP in the hands-on lab overview page to log into our lab server. Once we're in, we can get moving.
We'll need to make sure the
teamd package is installed to use teaming. We'll also grab the
bash-completion package, so that we can avoid having to actually type out all of our commands:
[cloud_user@host]$ sudo yum -y install teamd bash-completion
Now we'll run a quick
source /etc/profile and then we can get moving on the network.
Configure the Team Interface
There are three interfaces, and we can see them by running
nmcli d. We're going to keep our
eth0, but we'll delete the other two, then recreate them:
[cloud_user@host]$ sudo nmcli con delete Wired connection 1 [cloud_user@host]$ sudo nmcli con delete Wired connection 2
Create the Team Connection:
[cloud_user@host]$ sudo nmcli con add type team con-name Team0 ifname team0
Modify the Team Connection to include the static IP and gateway:
[cloud_user@host]$ sudo nmcli con mod Team0 ipv4.address 10.0.1.15/24 ipv4.gateway 10.0.1.1 ipv4.method manual
Add Slave Interfaces
These will bring up the two interfaces in the team:
[cloud_user@host]$ sudo nmcli con add type team-slave ifname eth1 con-name Slave1 master team0 [cloud_user@host]$ sudo nmcli con add type team-slave ifname eth2 con-name Slave2 master team0
Now we can run
nmcli c to see all of our interfaces.
Verify the Team State
To verify that the team and interfaces are set properly:
[cloud_user@host]$ nmcli c show Team0 | grep ipv4
This will start up the team, then the interfaces:
[cloud_user@host]$ sudo nmcli con up Team0 [cloud_user@host]$ sudo nmcli con up Slave1 [cloud_user@host]$ sudo nmcli con up Slave2
We can run a quick
nmcli to check again, and make sure everything came up the way it was supposed to. We'll see our interfaces listed with a few details.
To get details on the team itself, let's run:
[cloud_user@host]$ sudo teamdctl team0 state
Everything looks good, but is it actually working? We'll try this:
[cloud_user@host]$ ping 10.0.1.15
If we get a reply, we're good to go.
We set up a team, with a couple of interfaces, and adhered to all of the specifications our supervisor gave us. Congratulations!