75 lines
2.1 KiB
Bash
Executable File
75 lines
2.1 KiB
Bash
Executable File
#!/bin/sh
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# Helper functions
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# Get the mask form prefix
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cdr2mask()
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{
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# Number of args to shift, 255..255, first non-255 byte, zeroes
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set -- $(( 5 - ($1 / 8) )) 255 255 255 255 $(( (255 << (8 - ($1 % 8))) & 255 )) 0 0 0
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[ $1 -gt 1 ] && shift $1 || shift
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echo ${1-0}.${2-0}.${3-0}.${4-0}
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}
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# Get the ip4 address of the netork
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network_address() {
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declare address prefix_length
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IFS=/ read address prefix_length <<< "$1"
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declare -a octets
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IFS=. read -a octets <<< "$address"
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declare mask
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mask=$( printf "%08x" $(( (1 << 32) - (1 << (32 - prefix_length)) )) )
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declare -i i
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for i in {0..3}; do octets[$i]=$(( octets[i] & 16#${mask:2*i:2} )); done
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echo $( IFS=.; echo "${octets[*]}" )
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}
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echo "-- WW4 CONFIGURAION $* --"
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# Make sure that a ip address was defined for out network so that
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# we can configure dhcpd correctly
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IP4CIDR=`ip addr | awk '/scope global/ {print $2;exit}'`
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IP4=${IP4CIDR%/*}
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IP4PREFIX=${IP4CIDR#*/}
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IP4MASK=$(cdr2mask $IP4PREFIX)
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IP4NET=$(network_address "$IP4/$IP4PREFIX")
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if [ "$IP4PREFIX" -gt 25 ] ; then
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echo "ERROR: warewulf does at least a /25 network for dynamic addresses"
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exit 1
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fi
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DYNSIZE=100
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DYNSTART=${IP4#*.*.*.}
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DYNPRE=${IP4%.*}
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DYNEND=$(( $DYNSTART + $DYNSIZE ))
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if [ $DYNEND -gt 254 ] ; then
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DYNEND=$(( $IPNET + 2 + $DYNSIZE ))
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DYNSTART=$(( $IPNET + 2 ))
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fi
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DYNSTART="${DYNPRE}.${DYNSTART}"
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DYNEND="${DYNPRE}.${DYNEND}"
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WW4CONF=/etc/warewulf/warewulf.conf
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if [ -e $WW4CONF ] ; then
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test -n $IP4 && sed -i 's/^ipaddr: EMPTY/ipaddr: '$IP4'/' $WW4CONF
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test -n $IP4MASK && sed -i 's/^netmask: EMPTY/netmask: '$IP4MASK'/' $WW4CONF
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test -n $IP4NET && sed -i 's/^network: EMPTY/network: '$IP4NET'/' $WW4CONF
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test -n $DYNSTART && sed -i 's/^ range start: EMPTY/ range start: '$DYNSTART'/' $WW4CONF
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test -n $DYNEND && sed -i 's/^ range end: EMPTY/ range end: '$DYNEND'/' $WW4CONF
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cat << EOF
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ipaddr: $IP4
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netmask: $IP4MASK
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network: $IP4NET
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range start: $DYNSTART
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range end: $DYNEND
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EOF
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fi
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# configure the services of the host by building the host overlay
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echo "-- Running wwctl --"
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wwctl overlay build
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# enable tftp if systemd is running
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test -e /run/systemd/system && wwctl configure tftp
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