How do I set the nameserver (dns) for Ubuntu's initramfs?
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In /etc/initramfs-tools/initramfs.conf are a few configuration options for Ubuntu's initramfs.
Among other things one can set the IP and networking DEVICE for the inital ram file system there, e.g. DECCIVE=wlan1 or IP=192.168.0.10::192.168.0.1:255.255.255.0.
I have installed dropbear for unlocking encrypted drives via SSH and have the problem, that my server retains the initramfs network configuration even after unlocking and full boot. Since that configuration does not include a DNS, I have to add it manually afterwards and it does not persist.
So how do I configure the nameserver in an initramfs?
Things I tried:
When I set IFDOWN=* in /etc/dropbear-initramfs/config, the whole network is screwed after boot (not just the nameserver), and I have to do something like:
sudo ip link set <device> up
sudo ip a a 192.168.0.10/24 dev <device>
sudo ip r a default via 192.168.0.1
sudo resolvectl dns <device> 192.168.0.1 1.1.1.1
Inside the initramfs, a file /run/net-enp2s0 seems to be responsible for the exact network configuration:
# cat /run/net-enp2s0.conf
DEVICE='enp2s0'
PROTO='none'
IPV4ADDR='192.168.0.10'
IPV4BROADCAST='192.168.0.255'
IPV4NETMASK='255.255.255.0'
IPV4GATEWAY='192.168.0.1'
IPV4DNS0='0.0.0.0'
IPV4DNS1='0.0.0.0'
HOSTNAME=''
DNSDOMAIN=''
NISDOMAIN=''
ROOTSERVER='0.0.0.0'
ROOTPATH=''
filename=''
UPTIME='9'
DHCPLEASETIME='0'
DOMAINSEARCH=''
But I have no idea how it gets created and how to change its content. I find the initramfs documentation sadly lacking.
networking network-manager initramfs
asked Mar 23 at 17:54
con-f-usecon-f-use
13k1775136
add a comment |
In /etc/initramfs-tools/initramfs.conf are a few configuration options for Ubuntu's initramfs.
Among other things one can set the IP and networking DEVICE for the inital ram file system there, e.g. DECCIVE=wlan1 or IP=192.168.0.10::192.168.0.1:255.255.255.0.
I have installed dropbear for unlocking encrypted drives via SSH and have the problem, that my server retains the initramfs network configuration even after unlocking and full boot. Since that configuration does not include a DNS, I have to add it manually afterwards and it does not persist.
So how do I configure the nameserver in an initramfs?
Things I tried:
When I set IFDOWN=* in /etc/dropbear-initramfs/config, the whole network is screwed after boot (not just the nameserver), and I have to do something like:
sudo ip link set <device> up
sudo ip a a 192.168.0.10/24 dev <device>
sudo ip r a default via 192.168.0.1
sudo resolvectl dns <device> 192.168.0.1 1.1.1.1
Inside the initramfs, a file /run/net-enp2s0 seems to be responsible for the exact network configuration:
# cat /run/net-enp2s0.conf
DEVICE='enp2s0'
PROTO='none'
IPV4ADDR='192.168.0.10'
IPV4BROADCAST='192.168.0.255'
IPV4NETMASK='255.255.255.0'
IPV4GATEWAY='192.168.0.1'
IPV4DNS0='0.0.0.0'
IPV4DNS1='0.0.0.0'
HOSTNAME=''
DNSDOMAIN=''
NISDOMAIN=''
ROOTSERVER='0.0.0.0'
ROOTPATH=''
filename=''
UPTIME='9'
DHCPLEASETIME='0'
DOMAINSEARCH=''
But I have no idea how it gets created and how to change its content. I find the initramfs documentation sadly lacking.
networking network-manager initramfs
asked Mar 23 at 17:54
con-f-usecon-f-use
13k1775136
add a comment |
In /etc/initramfs-tools/initramfs.conf are a few configuration options for Ubuntu's initramfs.
Among other things one can set the IP and networking DEVICE for the inital ram file system there, e.g. DECCIVE=wlan1 or IP=192.168.0.10::192.168.0.1:255.255.255.0.
I have installed dropbear for unlocking encrypted drives via SSH and have the problem, that my server retains the initramfs network configuration even after unlocking and full boot. Since that configuration does not include a DNS, I have to add it manually afterwards and it does not persist.
So how do I configure the nameserver in an initramfs?
Things I tried:
When I set IFDOWN=* in /etc/dropbear-initramfs/config, the whole network is screwed after boot (not just the nameserver), and I have to do something like:
sudo ip link set <device> up
sudo ip a a 192.168.0.10/24 dev <device>
sudo ip r a default via 192.168.0.1
sudo resolvectl dns <device> 192.168.0.1 1.1.1.1
Inside the initramfs, a file /run/net-enp2s0 seems to be responsible for the exact network configuration:
# cat /run/net-enp2s0.conf
DEVICE='enp2s0'
PROTO='none'
IPV4ADDR='192.168.0.10'
IPV4BROADCAST='192.168.0.255'
IPV4NETMASK='255.255.255.0'
IPV4GATEWAY='192.168.0.1'
IPV4DNS0='0.0.0.0'
IPV4DNS1='0.0.0.0'
HOSTNAME=''
DNSDOMAIN=''
NISDOMAIN=''
ROOTSERVER='0.0.0.0'
ROOTPATH=''
filename=''
UPTIME='9'
DHCPLEASETIME='0'
DOMAINSEARCH=''
But I have no idea how it gets created and how to change its content. I find the initramfs documentation sadly lacking.
networking network-manager initramfs
asked Mar 23 at 17:54
con-f-usecon-f-use
13k1775136
In /etc/initramfs-tools/initramfs.conf are a few configuration options for Ubuntu's initramfs.
Among other things one can set the IP and networking DEVICE for the inital ram file system there, e.g. DECCIVE=wlan1 or IP=192.168.0.10::192.168.0.1:255.255.255.0.
I have installed dropbear for unlocking encrypted drives via SSH and have the problem, that my server retains the initramfs network configuration even after unlocking and full boot. Since that configuration does not include a DNS, I have to add it manually afterwards and it does not persist.
So how do I configure the nameserver in an initramfs?
Things I tried:
When I set IFDOWN=* in /etc/dropbear-initramfs/config, the whole network is screwed after boot (not just the nameserver), and I have to do something like:
sudo ip link set <device> up
sudo ip a a 192.168.0.10/24 dev <device>
sudo ip r a default via 192.168.0.1
sudo resolvectl dns <device> 192.168.0.1 1.1.1.1
Inside the initramfs, a file /run/net-enp2s0 seems to be responsible for the exact network configuration:
# cat /run/net-enp2s0.conf
DEVICE='enp2s0'
PROTO='none'
IPV4ADDR='192.168.0.10'
IPV4BROADCAST='192.168.0.255'
IPV4NETMASK='255.255.255.0'
IPV4GATEWAY='192.168.0.1'
IPV4DNS0='0.0.0.0'
IPV4DNS1='0.0.0.0'
HOSTNAME=''
DNSDOMAIN=''
NISDOMAIN=''
ROOTSERVER='0.0.0.0'
ROOTPATH=''
filename=''
UPTIME='9'
DHCPLEASETIME='0'
DOMAINSEARCH=''
But I have no idea how it gets created and how to change its content. I find the initramfs documentation sadly lacking.
networking network-manager initramfs
networking network-manager initramfs
asked Mar 23 at 17:54
con-f-usecon-f-use
13k1775136
asked Mar 23 at 17:54
con-f-usecon-f-use
13k1775136
edited Mar 23 at 18:10
con-f-use
asked Mar 23 at 17:54
con-f-usecon-f-use
13k1775136
asked Mar 23 at 17:54
con-f-usecon-f-use
13k1775136
asked Mar 23 at 17:54
con-f-usecon-f-use
13k1775136
13k1775136
add a comment |
add a comment |
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