crowbar/crowbar-core

# /etc/ntp.conf, configuration for ntpd; see ntp.conf(5) for help

driftfile <%= @driftfile %>

interface ignore wildcard
interface listen <%= @admin_interface %>
<% @listen_interfaces.each do |interface| %>
interface listen <%= interface %>
<% end %>

# Enable this if you want statistics to be logged.
#statsdir /var/log/ntpstats/

statistics loopstats peerstats clockstats
filegen loopstats file loopstats type day enable
filegen peerstats file peerstats type day enable
filegen clockstats file clockstats type day enable


# You do need to talk to an NTP server or two (or three).
<% if @is_server -%>
server 127.127.1.0 minpoll 3 burst
fudge 127.127.1.0 stratum <%= @fudgevalue %>
<% end -%>
<% @ntp_servers.each do |ntp_server| -%>
server <%= ntp_server %> iburst minpoll 4
<% end -%>

# Access control configuration; see /usr/share/doc/ntp-doc/html/accopt.html for
# details.  The web page <http://support.ntp.org/bin/view/Support/AccessRestrictions>
# might also be helpful.
#
# Note that "restrict" applies to both servers and clients, so a configuration
# that might be intended to block requests from certain clients could also end
# up blocking replies from your own upstream servers.

<% if @is_server -%>
# By default, ignore all inbound traffic from all hosts
restrict -4 default ignore
restrict -6 default ignore

# Exchange time with all hosts in the admin subnet, but don't allow configuration.
restrict <%= @admin_subnet %> mask <%= @admin_netmask %> notrap nomodify nopeer noquery

# Exchange time with external NTP servers, but don't allow configuration
# Do not use rate-limiting, because that can block crowbar_join. (bsc#1179161)
<% @ntp_servers.each do |ntp_server| -%>
restrict <%= ntp_server %> kod notrap nomodify nopeer noquery
<% end -%>

<% else -%>
# By default, exchange time with everybody, but don't allow configuration.
restrict -4 default notrap nomodify nopeer noquery
restrict -6 default notrap nomodify nopeer noquery
<% end -%>

# Local users may interrogate the ntp server more closely.
restrict 127.0.0.1
restrict ::1

# Clients from this (example!) subnet have unlimited access, but only if
# cryptographically authenticated.
#restrict 192.168.123.0 mask 255.255.255.0 notrust

# If you want to provide time to your local subnet, change the next line.
# (Again, the address is an example only.)
#broadcast 192.168.123.255

# If you want to listen to time broadcasts on your local subnet, de-comment the
# next lines.  Please do this only if you trust everybody on the network!
#disable auth
#broadcastclient