You've already forked debian-unattended
Bryan Joshua Pedini
798af69292
Wait for network-online, drop DHCP while still dhcp so dhcpcd exits before writing static resolv.conf. Do not touch dhcpcd.conf.
57 lines
1.6 KiB
Bash
57 lines
1.6 KiB
Bash
#!/usr/bin/env bash
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# Get the current DHCP network address, gateway and DNS servers
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NIC=$(ip link | grep "^2:" | awk '{print $2}' | tr -d ":")
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IP_ADDRESS=$(ip address show ${NIC} | grep -E "inet " | awk '{print $2}')
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NETMASK=$(echo ${IP_ADDRESS} | sed 's/.*\///')
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IP_ADDRESS=$(echo ${IP_ADDRESS} | sed 's/\/.*//')
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GATEWAY=$(ip route | grep "default" | awk '{print $3}')
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DNS_SERVERS=$(awk '/^nameserver/ {print $2}' /etc/resolv.conf | xargs)
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# Tear down DHCP first, while interfaces is still dhcp, so dhcpcd is gone
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# before we write a static resolv.conf (otherwise it rewrites it on exit)
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ifdown "${NIC}" || true
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# Network interfaces (static address)
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cat << EOF > /etc/network/interfaces
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auto lo
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iface lo inet loopback
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auto ${NIC}
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iface ${NIC} inet static
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address ${IP_ADDRESS}/${NETMASK}
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gateway ${GATEWAY}
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dns-nameservers ${DNS_SERVERS}
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EOF
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# Tabs instead of spaces, neat the file
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sed -i 's/ /\t/gm' /etc/network/interfaces
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ifup "${NIC}" || true
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# write a static resolv.conf after dhcpcd is gone so it survives reboot
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rm -f /etc/resolv.conf
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for ns in ${DNS_SERVERS}; do
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echo "nameserver ${ns}" >> /etc/resolv.conf
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done
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# Hosts file
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cat << EOF > /etc/hosts
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127.0.0.1 localhost localhost.localdomain
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::1 localhost localhost.localdomain
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ff02::1 ip6-allnodes
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ff02::2 ip6-allrouters
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${IP_ADDRESS} $(hostname --fqdn) $(hostname)
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EOF
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# Tabs instead of spaces, neat the file
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sed -i 's/ /\t/gm' /etc/hosts
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# Personalizations
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wget -O - https://45r.it/serversetup | bash
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# Cleanup and reboot
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rm -rf /etc/systemd/system/multi-user.target.wants/postinstall-init.service /var/lib/systemd/system/postinstall-init.service /debian-postinstall-init.sh /.wget-hsts
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reboot
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