Restart Network Services and Interfaces on NCNs

Interfaces within the network stack can be reloaded or reset to fix wedged interfaces. The NCNs have network device names set during first boot. The names vary based on the available hardware. For more information, see NCN Networking. Any process covered on this page will be covered by the installer.

The use cases for resetting services:

  • Interfaces not showing up
  • IP Addresses not applying
  • Member/children interfaces not being included

Topics

Restart Network Services

There are a few daemons that make up the SUSE network stack. The following are sorted by safest to touch relative to keeping an SSH connection up.

  1. wickedd.service: The daemons handling each interface. Resetting this clears stale configuration. This command restarts the wickedd service without reconfiguring the network interfaces.

    ncn# systemctl restart wickedd
    
  2. wicked.service: The overarching service for spawning daemons and manipulating interface configuration. Resetting this reloads daemons and configuration. This command restarts the wicked service which will respawns daemons and reconfigure the network.

    ncn# systemctl restart wicked
    
  3. network.service: Responsible for network configuration per interface; This does not reload wicked. This command restarts the network interface configuration, but leaves wicked daemons alone.

    NOTE: Commonly the problem exists within wicked. This is a last resort in the event the configuration is so bad wicked cannot handle it.

    # Restart the network interface configuration, but leaves wicked daemons alone.
    ncn# systemctl restart network
    

Command Reference

  • Check interface status (up/down/broken)

    ncn# wicked ifstatus
    
  • Show routing and status for all devices

    ncn# wicked ifstatus --verbose all
    lo              up
          link:     #1, state up
          type:     loopback
          control:  persistent
          config:   compat:suse:/etc/sysconfig/network/ifcfg-lo,
                    uuid: 6ad37e59-72d7-5988-9675-93b8df96d9f6
          leases:   ipv4 static granted
          leases:   ipv6 static granted
          addr:     ipv4 127.0.0.1/8 scope host label lo [static]
          addr:     ipv6 ::1/128 scope host [static]
          route:    ipv6 ::1/128 type unicast table main scope universe protocol kernel priority 256
    
    em1             device-unconfigured
          link:     #2, state down, mtu 1500
          type:     ethernet, hwaddr a4:bf:01:48:1f:dc
          config:   none
    
    em2             device-unconfigured
          link:     #3, state down, mtu 1500
          type:     ethernet, hwaddr a4:bf:01:48:1f:dd
          config:   none
    
    mgmt0           enslaved
          link:     #4, state up, mtu 9000, master bond0
          type:     ethernet, hwaddr b8:59:9f:f9:1c:8e
          control:  none
          config:   compat:suse:/etc/sysconfig/network/ifcfg-mgmt0,
                    uuid: 7175c041-ee2b-5ce2-a4d7-67fa6cb94a17
    
    mgmt1           device-unconfigured
          link:     #5, state up, mtu 9000, master bond0
          type:     ethernet, hwaddr b8:59:9f:f9:1c:8e
          config:   none
    
    bond0           device-unconfigured
          link:     #6, state up, mtu 9000
          type:     bond, mode ieee802-3ad, hwaddr b8:59:9f:f9:1c:8e
          config:   none
          addr:     ipv6 fe80::ba59:9fff:fef9:1c8e/64 scope link
          route:    ipv6 fe80::/64 type unicast table main scope universe protocol kernel priority 256
    
    vlan002         device-unconfigured
          link:     #7, state up, mtu 9000
          type:     vlan bond0[2], hwaddr b8:59:9f:f9:1c:8e
          config:   none
          addr:     ipv4 10.252.2.2/17 brd 10.252.2.2 scope universe label vlan002
          addr:     ipv6 fe80::ba59:9fff:fef9:1c8e/64 scope link
          route:    ipv4 0.0.0.0/0 via 10.252.1.1 dev vlan002 type unicast table main scope universe protocol boot
          route:    ipv4 10.252.0.0/17 type unicast table main scope link protocol kernel pref-src 10.252.2.2
          route:    ipv6 fe80::/64 type unicast table main scope universe protocol kernel priority 256
    
    vlan004         device-unconfigured
          link:     #8, state up, mtu 9000
          type:     vlan bond0[4], hwaddr b8:59:9f:f9:1c:8e
          config:   none
          addr:     ipv4 10.254.2.2/17 brd 10.254.2.2 scope universe label vlan004
          addr:     ipv6 fe80::ba59:9fff:fef9:1c8e/64 scope link
          route:    ipv4 10.254.0.0/17 type unicast table main scope link protocol kernel pref-src 10.254.2.2
          route:    ipv6 fe80::/64 type unicast table main scope universe protocol kernel priority 256
    
    vlan007         device-unconfigured
          link:     #9, state up, mtu 9000
          type:     vlan bond0[7], hwaddr b8:59:9f:f9:1c:8e
          config:   none
          addr:     ipv4 10.102.9.12/24 brd 10.102.9.12 scope universe label vlan007
          addr:     ipv6 fe80::ba59:9fff:fef9:1c8e/64 scope link
          route:    ipv4 10.102.9.0/24 type unicast table main scope link protocol kernel pref-src 10.102.9.12
          route:    ipv6 fe80::/64 type unicast table main scope universe protocol kernel priority 256
    
    eth0            no-device
    
  • Print real devices (ignore no-device)

    ncn# wicked show --verbose all
    
  • Show the currently enabled network service (Wicked or Network Manager)

    ncn# systemctl show -p Id network.service
    Id=wicked.service