On 7/8/20 10:35 AM, Michael Eager wrote:
I'm having a difficult time configuring the IP address of an interface
in a Fedora 32 in a LXD container.
The configuration for eth0 in /etc/sysconfig/network-scripts/:
# cat ifcfg-eth0
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=none
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=no
IPV6_DEFROUTE=no
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=eth0
DEVICE=eth0
ONBOOT=yes
IPADDR=192.168.20.43
PREFIX=24
GATEWAY=192.168.20.1
IPV6_DISABLED=yes
DNS1=192.168.20.1
DNS2=75.75.75.75
DNS3=8.8.8.8
HWADDR=00:16:3e:d1:ea:86
When I start the container, eth0 gets two IP addresses. One is the IP
specified in the ifcfg-eth0 file. The other is a DHCP address. I'm
assuming that NetworkManager is getting the DHCP address.
I tried adding NMCONTROLLED=no to the ifcfg, but I get the same double
IP assignment.
I've tried removing the ifcfg-eth0 file and configuring the interface
using nmcli as described here:
https://linuxconfig.org/how-to-configure-static-ip-address-on-fedora-31
That doesn't work. When the container restarts, a new eth0 is created
with a different UUID.
Any suggestions would be appreciated.
Hello Michael Eager,
I'm just a user but I tried this and it works. I'm assuming a basic
setup where the container is attached to a bridge.
Instead of defining eth0 in the container do it in a profile..
devices:
eth0:
type: nic
name: eth0
hwaddr: 00:16:3e:01:02:03
ipv4.address: 4.3.2.100 /* container's PREFIX is same as bridge */
nictype: bridged /* bridge net: 4.3.2.0 */
parent: LXD /* bridge ip: 4.3.2.1 */
The container's ip will be assigned via host dhcp but will use the
mac/ip specified in the profile. You can use the container's
sysctl.conf to disable ipv6. DNS could be specified *within* the
container's /etc/resolv.conf. You could also insert it using the
profile's *runcmd* feature.
As to UUID of the nic: I don't remember seeing the ability to assign
UUIDs to devices using lxc but is probably doable from the profile.
Since the device's UUID would be internal to your container, does it
need one?
Hope these ideas are useful,
Mike Wright
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