> Zone IP address changes

If the network configuration of a host changes, then you may have to change the IP addresses of your zones. For example, I changed my broadband provider at home, and the old ISP router used the 192.168.0 network, while the new router used the 192.168.1 network.

In this case, if you're using DHCP (explicitly or automatically via NWAM which is the default) the change will be picked up automatically. But the zone configuration will have the old IP addresses embedded and those need to be updated.

The examples below are appropriate for a network change from 192.168.0 to 192.168.1.

Shared-ip zones

For a shared-ip zone, you just need to change the address for each zone. Having found the old address (via ifconfig for example, run the command

zonecfg -z illumos-build

and then update the address

select net address=192.168.0.211/24
set address=192.168.1.211/24
end
verify
commit
exit

Then you'll need to get the zone to use the new address by rebooting it:

zoneadm -z illumos-build reboot

Exclusive-ip zones

For an exclusive-ip zone (and all LX or bhyve zones will be exclusive-ip) the parameters in the zone configuration are slightly different, you need to identify the name of the virtual interface (vnic) that's in use. Then run the command

zonecfg -z alpine1

and then update the address

select net physical=znic0
set allowed-address=192.168.1.239/24
set defrouter=192.168.1.1
end
verify
commit
exit

Then you'll need to get the zone to use the new address by rebooting it:

zoneadm -z alpine1 reboot

You may then need to get whatever's inside the zone to pick up the changes, if it's been statically configured. For example, with an LX zone running alpine you'll need to log in to the console via VNC and run setup-interfaces.

All zones

There's one additional step needed for all zones, as zap saves the network configuration for its own use. This can be fixed by updating the relevant zconfig files stored in /var/zap/zones:

cd /var/zap/zones
sed -i s:192.168.0:192.168.1: zconfig.*

Index | Previous Section | Next Section