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From: Robert Fairley <rfairley@redhat.com>
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Date: Wed, 17 Jun 2020 10:14:19 -0400
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Subject: [PATCH] examples/nm-dispatcher.dhcp: use sysconfig
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Use the PEERNTP and NTPSERVERARGS environment variables from
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/etc/sysconfig/network{-scripts}.
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Co-Authored-By: Christian Glombek <cglombek@redhat.com>
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diff --git a/examples/chrony.nm-dispatcher.dhcp b/examples/chrony.nm-dispatcher.dhcp
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index 6ea4c37..a6ad35a 100644
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--- a/examples/chrony.nm-dispatcher.dhcp
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+++ b/examples/chrony.nm-dispatcher.dhcp
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@@ -6,16 +6,24 @@
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chronyc=/usr/bin/chronyc
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default_server_options=iburst
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-server_dir=/var/run/chrony-dhcp
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+server_dir=/run/chrony-dhcp
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dhcp_server_file=$server_dir/$interface.sources
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# DHCP4_NTP_SERVERS is passed from DHCP options by NetworkManager.
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nm_dhcp_servers=$DHCP4_NTP_SERVERS
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+[ -f /etc/sysconfig/network ] && . /etc/sysconfig/network
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+[ -f /etc/sysconfig/network-scripts/ifcfg-"${interface}" ] && \
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+ . /etc/sysconfig/network-scripts/ifcfg-"${interface}"
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+
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add_servers_from_dhcp() {
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rm -f "$dhcp_server_file"
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+
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+ # Don't add NTP servers if PEERNTP=no specified; return early.
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+ [ "$PEERNTP" = "no" ] && return
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+
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for server in $nm_dhcp_servers; do
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- echo "server $server $default_server_options" >> "$dhcp_server_file"
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+ echo "server $server ${NTPSERVERARGS:-$default_server_options}" >> "$dhcp_server_file"
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done
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$chronyc reload sources > /dev/null 2>&1 || :
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}
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--
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2.29.2
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Use chrony-helper instead of chronyc to avoid changes in default chrony.conf
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diff -up chrony-4.1/examples/chrony.nm-dispatcher.dhcp.nm-dispatcher-dhcp chrony-4.1/examples/chrony.nm-dispatcher.dhcp
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--- chrony-4.1/examples/chrony.nm-dispatcher.dhcp.nm-dispatcher-dhcp 2021-06-09 11:10:30.997416152 +0200
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+++ chrony-4.1/examples/chrony.nm-dispatcher.dhcp 2021-06-09 11:16:23.598381336 +0200
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@@ -9,11 +9,12 @@ export LC_ALL=C
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interface=$1
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action=$2
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-chronyc=/usr/bin/chronyc
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+helper=/usr/libexec/chrony-helper
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default_server_options=iburst
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-server_dir=/run/chrony-dhcp
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+server_dir=/run/chrony-helper
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-dhcp_server_file=$server_dir/$interface.sources
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+dhcp_server_tmpfile=$server_dir/tmp-nm-dhcp.$interface
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+dhcp_server_file=$server_dir/nm-dhcp.$interface
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# DHCP4_NTP_SERVERS is passed from DHCP options by NetworkManager.
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nm_dhcp_servers=$DHCP4_NTP_SERVERS
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@@ -24,24 +24,30 @@ nm_dhcp_servers=$DHCP4_NTP_SERVERS
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add_servers_from_dhcp() {
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rm -f "$dhcp_server_file"
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+ # Remove servers saved by the dhclient script before it detected NM.
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+ rm -f "/var/lib/dhclient/chrony.servers.$interface"
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+
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# Don't add NTP servers if PEERNTP=no specified; return early.
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[ "$PEERNTP" = "no" ] && return
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+ # Create the directory with correct SELinux context.
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+ $helper create-helper-directory > /dev/null 2>&1
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+
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for server in $nm_dhcp_servers; do
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- echo "server $server ${NTPSERVERARGS:-$default_server_options}" >> "$dhcp_server_file"
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+ echo "$server ${NTPSERVERARGS:-$default_server_options}" >> "$dhcp_server_tmpfile"
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done
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+ [ -e "$dhcp_server_tmpfile" ] && mv "$dhcp_server_tmpfile" "$dhcp_server_file"
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- $chronyc reload sources > /dev/null 2>&1 || :
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+
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+ $helper update-daemon > /dev/null 2>&1 || :
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}
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clear_servers_from_dhcp() {
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if [ -f "$dhcp_server_file" ]; then
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rm -f "$dhcp_server_file"
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- $chronyc reload sources > /dev/null 2>&1 || :
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+ $helper update-daemon > /dev/null 2>&1 || :
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fi
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}
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-mkdir -p $server_dir
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-
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if [ "$action" = "up" ] || [ "$action" = "dhcp4-change" ]; then
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add_servers_from_dhcp
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elif [ "$action" = "down" ]; then
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