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Line 1: − You can customize the lease duration for the dhcp server ('''dhcpd''') in SME using these instructions.+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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{{Needs review}}
{{Needs review}}
== Display the dhcpd lease==
according in [[bugzilla:2641]] you have a script which display in your terminal how many computers are connected their ip, mac adress and their expiration of dhcp leases.
nano dhcpd.lease
paste the content below then save the file
chmod +x dhcpd.lease
#!/bin/sh
#
# dhcpactiv.sh
#
# v.004
# - rewritten again to pull data from dhcpd files according to labels instead of position
#
# v.003
# - add code to remove tstp information from dpcpd.leases
#
# v.002
# - rewritten to use awk more for parsing
# - added "GMT" indicator to Expiration col head
#
echo "Source Host MAC Address IP Address Expiration (GMT)"
echo "============= ========== ================= =============== ================"
#
awk ' { out = ""} \
{ $1=="lease"||$1=="client-hostname" ? out=" " $2 : out=out } \
{ $1=="binding"||$1=="hardware" ? out= " " $3: out=out } \
{ $1=="ends"? out=" " $3 " " $4: out=out } \
{ $1=="}"? out="\n": out=out } \
{ printf out," " }' /var/lib/dhcpd/dhcpd.leases \
| grep active \
| sed -e s/'[{};" ]'/\ /g \
| awk '{ printf "%-13s %-10s %-17s %-15s %-10s %-5s\n", "dhcpd.leases", $6, $5, $1, $2, $3 }'
#
# Now do the same for /etc/dhcpd.conf
#
awk ' { out = ""}
{ $1=="host"||$1=="fixed-address" ? out=" " $2 : out=out } \
{ $1=="hardware" ? out= " " $3: out=out } \
{ $1=="}"? out="\n": out=out } \
{ printf out," " }' /etc/dhcpd.conf \
| grep : \
| sed -e s/'[{};\" ]'/\ /g -e s/\.`config get DomainName`// \
| awk '{ printf "%-13s %-10s %-17s %-15s %-15s \n", "dhcpd.conf", $1, $2, $3, "reservation"}'
#
# Finally, grab the current arp table
#
arp -a \
| sed -e s/\\..*\(/\ / -e s/\)// \
| awk '{ printf "%-13s %-10s %-17s %-15s %-15s \n", "arp", $1, $4, $2, "n/a"}'
== Create custom template fragments ==
== Create custom template fragments ==
You can customize the lease duration for the dhcp server ('''dhcpd''') in SME using these instructions.
The commands below will create custom template fragments for <tt>default-lease-time</tt> and <tt>max-lease-time</tt>, re-generate <tt>/etc/dhcpd.conf</tt>, and restart the '''dhcpd''' service in order to activate your changes.
The commands below will create custom template fragments for <tt>default-lease-time</tt> and <tt>max-lease-time</tt>, re-generate <tt>/etc/dhcpd.conf</tt>, and restart the '''dhcpd''' service in order to activate your changes.
mkdir -p /etc/e-smith/templates-custom/etc/dhcpd.conf
mkdir -p /etc/e-smith/templates-custom/etc/dhcpd.conf