Network Management

Proxmox Backup Server provides both a web interface and a command line tool for network configuration. You can find the configuration options in the web interface under the Network Interfaces section of the Configuration menu tree item. The command line tool is accessed via the network subcommand. These interfaces allow you to carry out some basic network management tasks, such as adding, configuring, and removing network interfaces.

Note

Any changes made to the network configuration are not applied, until you click on Apply Configuration or enter the network reload command. This allows you to make many changes at once. It also allows you to ensure that your changes are correct before applying them, as making a mistake here can render the server inaccessible over the network.

To get a list of available interfaces, use the following command:

# proxmox-backup-manager network list
┌───────┬────────┬───────────┬────────┬─────────────┬──────────────┬──────────────┐
│ name  │ type   │ autostart │ method │ address     │ gateway      │ ports/slaves │
╞═══════╪════════╪═══════════╪════════╪═════════════╪══════════════╪══════════════╡
│ bond0 │ bond   │         1 │ static │ x.x.x.x/x   │ x.x.x.x      │ ens18 ens19  │
├───────┼────────┼───────────┼────────┼─────────────┼──────────────┼──────────────┤
│ ens18 │ eth    │         1 │ manual │             │              │              │
├───────┼────────┼───────────┼────────┼─────────────┼──────────────┼──────────────┤
│ ens19 │ eth    │         1 │ manual │             │              │              │
└───────┴────────┴───────────┴────────┴─────────────┴──────────────┴──────────────┘

To add a new network interface, use the create subcommand with the relevant parameters. For example, you may want to set up a bond, for the purpose of network redundancy. The following command shows a template for creating the bond shown in the list above:

# proxmox-backup-manager network create bond0 --type bond --bond_mode active-backup --slaves ens18,ens19 --autostart true --cidr x.x.x.x/x --gateway x.x.x.x

You can make changes to the configuration of a network interface with the update subcommand:

# proxmox-backup-manager network update bond0 --cidr y.y.y.y/y

You can also remove a network interface:

# proxmox-backup-manager network remove bond0

The pending changes for the network configuration file will appear at the bottom of the web interface. You can also view these changes, by using the command:

# proxmox-backup-manager network changes

If you would like to cancel all changes at this point, you can either click on the Revert button or use the following command:

# proxmox-backup-manager network revert

If you are happy with the changes and would like to write them into the configuration file, select Apply Configuration. The corresponding command is:

# proxmox-backup-manager network reload

Note

This command and corresponding GUI button rely on the ifreload command, from the package ifupdown2. This package is included within the Proxmox Backup Server installation, however, you may have to install it yourself, if you have installed Proxmox Backup Server on top of Debian or Proxmox VE.

You can also configure DNS settings, from the DNS section of Configuration or by using the dns subcommand of proxmox-backup-manager.