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configureDNS

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This commit is contained in:
Kroese 2023-05-13 07:51:53 +02:00 committed by GitHub
parent 9b13bc46d8
commit eb0f91ad3b
1 changed files with 46 additions and 49 deletions
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95
run/network.sh
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@ -66,6 +66,52 @@ configureDHCP() {
return 0
}
configureDNS () {
# dnsmasq configuration:
DNSMASQ_OPTS="$DNSMASQ_OPTS --dhcp-range=$VM_NET_IP,$VM_NET_IP --dhcp-host=$VM_NET_MAC,,$VM_NET_IP,$VM_NET_HOST,infinite --dhcp-option=option:netmask,255.255.255.0"
# Create lease file for faster resolve
echo "0 $VM_NET_MAC $VM_NET_IP $VM_NET_HOST 01:${VM_NET_MAC}" > /var/lib/misc/dnsmasq.leases
chmod 644 /var/lib/misc/dnsmasq.leases
# Build DNS options from container /etc/resolv.conf
if [[ "${DEBUG}" == [Yy1]* ]]; then
echo "/etc/resolv.conf:" && echo && cat /etc/resolv.conf && echo
fi
mapfile -t nameservers < <( { grep '^nameserver' /etc/resolv.conf || true; } | sed 's/\t/ /g' | sed 's/nameserver //' | sed 's/ //g')
searchdomains=$( { grep '^search' /etc/resolv.conf || true; } | sed 's/\t/ /g' | sed 's/search //' | sed 's/#.*//' | sed 's/\s*$//g' | sed 's/ /,/g')
domainname=$(echo "$searchdomains" | awk -F"," '{print $1}')
for nameserver in "${nameservers[@]}"; do
nameserver=$(echo "$nameserver" | sed 's/#.*//' )
if ! [[ "$nameserver" =~ .*:.* ]]; then
[[ -z "$DNS_SERVERS" ]] && DNS_SERVERS="$nameserver" || DNS_SERVERS="$DNS_SERVERS,$nameserver"
fi
done
[[ -z "$DNS_SERVERS" ]] && DNS_SERVERS="1.1.1.1"
DNSMASQ_OPTS="$DNSMASQ_OPTS --dhcp-option=option:dns-server,$DNS_SERVERS --dhcp-option=option:router,${VM_NET_IP%.*}.1"
if [ -n "$searchdomains" ] && [ "$searchdomains" != "." ]; then
DNSMASQ_OPTS="$DNSMASQ_OPTS --dhcp-option=option:domain-search,$searchdomains --dhcp-option=option:domain-name,$domainname"
else
[[ -z $(hostname -d) ]] || DNSMASQ_OPTS="$DNSMASQ_OPTS --dhcp-option=option:domain-name,$(hostname -d)"
fi
DNSMASQ_OPTS=$(echo "$DNSMASQ_OPTS" | sed 's/\t/ /g' | tr -s ' ' | sed 's/^ *//')
[[ "${DEBUG}" == [Yy1]* ]] && set -x
$DNSMASQ ${DNSMASQ_OPTS:+ $DNSMASQ_OPTS}
{ set +x; } 2>/dev/null
[[ "${DEBUG}" == [Yy1]* ]] && echo
return 0
}
configureNAT () {
# Create a bridge with a static IP for the VM guest
@ -119,55 +165,6 @@ configureNAT () {
return 0
}
configureDNS () {
# dnsmasq configuration:
DNSMASQ_OPTS="$DNSMASQ_OPTS --dhcp-range=$VM_NET_IP,$VM_NET_IP --dhcp-host=$VM_NET_MAC,,$VM_NET_IP,$VM_NET_HOST,infinite --dhcp-option=option:netmask,255.255.255.0"
# Create lease file for faster resolve
echo "0 $VM_NET_MAC $VM_NET_IP $VM_NET_HOST 01:${VM_NET_MAC}" > /var/lib/misc/dnsmasq.leases
chmod 644 /var/lib/misc/dnsmasq.leases
# Build DNS options from container /etc/resolv.conf
if [[ "${DEBUG}" == [Yy1]* ]]; then
echo "/etc/resolv.conf:" && echo && cat /etc/resolv.conf && echo
fi
mapfile -t nameservers < <( { grep '^nameserver' /etc/resolv.conf || true; } | sed 's/\t/ /g' | sed 's/nameserver //' | sed 's/ //g')
searchdomains=$( { grep '^search' /etc/resolv.conf || true; } | sed 's/\t/ /g' | sed 's/search //' | sed 's/#.*//' | sed 's/\s*$//g' | sed 's/ /,/g')
domainname=$(echo "$searchdomains" | awk -F"," '{print $1}')
for nameserver in "${nameservers[@]}"; do
nameserver=$(echo "$nameserver" | sed 's/#.*//' )
if ! [[ "$nameserver" =~ .*:.* ]]; then
[[ -z "$DNS_SERVERS" ]] && DNS_SERVERS="$nameserver" || DNS_SERVERS="$DNS_SERVERS,$nameserver"
fi
done
[[ -z "$DNS_SERVERS" ]] && DNS_SERVERS="1.1.1.1"
DNSMASQ_OPTS="$DNSMASQ_OPTS --dhcp-option=option:dns-server,$DNS_SERVERS --dhcp-option=option:router,${VM_NET_IP%.*}.1"
if [ -n "$searchdomains" ] && [ "$searchdomains" != "." ]; then
DNSMASQ_OPTS="$DNSMASQ_OPTS --dhcp-option=option:domain-search,$searchdomains --dhcp-option=option:domain-name,$domainname"
else
[[ -z $(hostname -d) ]] || DNSMASQ_OPTS="$DNSMASQ_OPTS --dhcp-option=option:domain-name,$(hostname -d)"
fi
DNSMASQ_OPTS=$(echo "$DNSMASQ_OPTS" | sed 's/\t/ /g' | tr -s ' ' | sed 's/^ *//')
[[ "${DEBUG}" == [Yy1]* ]] && set -x
$DNSMASQ ${DNSMASQ_OPTS:+ $DNSMASQ_OPTS}
{ set +x; } 2>/dev/null
[[ "${DEBUG}" == [Yy1]* ]] && echo
return 0
}
# ######################################
# Configure Network
# ######################################