extend chrony-helper to allow management of static sources (#1331655)
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@ -2,9 +2,12 @@
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# This script configures running chronyd to use NTP servers obtained from
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# DHCP and _ntp._udp DNS SRV records. Files with servers from DHCP are managed
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# externally (e.g. by a dhclient script). Files with servers from DNS SRV
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# records are updated here using the dig utility.
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# records are updated here using the dig utility. The script can also list
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# and set static sources in the chronyd configuration file.
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chronyc=/usr/bin/chronyc
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chrony_conf=/etc/chrony.conf
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chrony_service=chronyd.service
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helper_dir=/var/run/chrony-helper
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added_servers_file=$helper_dir/added_servers
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@ -142,6 +145,57 @@ prepare_helper_dir() {
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fi
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}
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is_source_line() {
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local pattern="^[ \t]*(server|pool|peer|refclock)[ \t]+[^ \t]+"
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[[ "$1" =~ $pattern ]]
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}
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list_static_sources() {
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while read line; do
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is_source_line "$line" && echo "$line"
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done < $chrony_conf
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}
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set_static_sources() {
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local new_config tmp_conf
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new_config=$(
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sources=$(
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while read line; do
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is_source_line "$line" && echo "$line"
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done)
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while read line; do
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if ! is_source_line "$line"; then
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echo "$line"
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continue
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fi
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tmp_sources=$(
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local removed=0
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echo "$sources" | while read line2; do
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[ "$removed" -ne 0 -o "$line" != "$line2" ] && \
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echo "$line2" || removed=1
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done)
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[ "$sources" == "$tmp_sources" ] && continue
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sources=$tmp_sources
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echo "$line"
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done < $chrony_conf
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echo "$sources"
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)
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tmp_conf=${chrony_conf}.tmp
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cp -a $chrony_conf $tmp_conf &&
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echo "$new_config" > $tmp_conf &&
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mv $tmp_conf $chrony_conf || return 1
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systemctl try-restart $chrony_service
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}
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print_help() {
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echo "Usage: $0 COMMAND"
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echo
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@ -151,6 +205,8 @@ print_help() {
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echo " enable-dnssrv NAME"
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echo " disable-dnssrv NAME"
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echo " list-dnssrv"
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echo " list-static-sources"
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echo " set-static-sources < sources.list"
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echo " is-running"
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echo " command CHRONYC-COMMAND"
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}
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@ -172,6 +228,12 @@ case "$1" in
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list-dnssrv)
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list_dnssrv_timers
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;;
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list-static-sources)
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list_static_sources
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;;
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set-static-sources)
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set_static_sources
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;;
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is-running)
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is_running
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;;
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