Add script to configure NTP
This commit is contained in:
parent
7fcf233489
commit
051f24dc2d
|
|
@ -1,3 +1,7 @@
|
|||
# Disable chrony (NTP client)
|
||||
# Only start Chrony if an NTP server is configured.
|
||||
|
||||
if [ ! -f /etc/chrony/sources.d/ntp.sources ]; then
|
||||
echo "NTP server not configured, not starting chrony."
|
||||
exit 1
|
||||
fi
|
||||
|
||||
exit
|
||||
|
|
|
|||
|
|
@ -25,12 +25,23 @@ copy_ssh_host_key() {
|
|||
chmod 0600 /etc/dropbear/dropbear_ed25519_host_key || true
|
||||
}
|
||||
|
||||
# Take NTP server from configuration partition.
|
||||
copy_ntp_server() {
|
||||
|
||||
# If an NTP server is configured, copy it to Chrony configuration.
|
||||
if [ -s ${CONFIG_DIR}/ntp.sources ]; then
|
||||
mkdir -p /etc/chrony/sources.d
|
||||
cp -p ${CONFIG_DIR}/ntp.sources /etc/chrony/sources.d
|
||||
fi
|
||||
}
|
||||
|
||||
case "$1" in
|
||||
start)
|
||||
echo "Reading configuration files from SD card ..."
|
||||
lock_config || exit 1
|
||||
read_config || exit 1
|
||||
copy_ssh_host_key
|
||||
copy_ntp_server
|
||||
;;
|
||||
stop|restart|reload)
|
||||
true
|
||||
|
|
|
|||
|
|
@ -0,0 +1,171 @@
|
|||
#!/bin/sh
|
||||
#
|
||||
# Manage NTP configuration.
|
||||
#
|
||||
|
||||
. /opt/puzzlefw/lib/functions.sh
|
||||
|
||||
# Show current configuration.
|
||||
ntpcfg_show() {
|
||||
|
||||
echo "Active NTP configuration:"
|
||||
if [ -s /etc/chrony/sources.d/ntp.sources ]; then
|
||||
cat /etc/chrony/sources.d/ntp.sources
|
||||
else
|
||||
echo "disabled"
|
||||
fi
|
||||
echo
|
||||
|
||||
echo "Saved NTP configuration:"
|
||||
if [ -s ${CONFIG_DIR}/ntp.sources ]; then
|
||||
cat ${CONFIG_DIR}/ntp.sources
|
||||
else
|
||||
echo "disabled"
|
||||
fi
|
||||
echo
|
||||
}
|
||||
|
||||
# Check that parameter is a well-formed IPv4 address.
|
||||
check_ipaddr() {
|
||||
IFS="." read a b c d <<EOF
|
||||
$1
|
||||
EOF
|
||||
for i in "$a" "$b" "$c" "$d" ; do
|
||||
if ! [ "$i" -ge 0 -a "$i" -le 255 ]; then
|
||||
echo "ERROR: Invalid IP address '$1'" >&2
|
||||
exit 1
|
||||
fi
|
||||
done
|
||||
}
|
||||
|
||||
# Configure and enable Chrony.
|
||||
ntpcfg_server() {
|
||||
|
||||
if [ "$1" != "server" ]; then
|
||||
echo "ERROR: Invalid command '$1'" >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
NTPSERVER="$2"
|
||||
|
||||
if [ -z "$NTPSERVER" ]; then
|
||||
echo "ERROR: Server IP address not specified" >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
check_ipaddr "$NTPSERVER"
|
||||
|
||||
POLLOPTS=""
|
||||
|
||||
if [ "$#" -gt 2 ]; then
|
||||
|
||||
if [ "$3" != "poll" ]; then
|
||||
echo "ERROR: Unknown option '$3'" >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
POLLINT="$4"
|
||||
|
||||
if [ -z "$POLLINT" ]; then
|
||||
echo "ERROR: Poll interval not specified" >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
if ! [ "$POLLINT" -ge "-1" -a "$POLLINT" -le "10" ]; then
|
||||
echo "ERROR: Invalid poll interval '$POLLINT', must be between -1 and 10" >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
POLLOPTS="minpoll $POLLINT maxpoll $POLLINT"
|
||||
|
||||
if [ "$#" -gt 4 ]; then
|
||||
echo "ERROR: Unexpected option '$5'" >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
fi
|
||||
|
||||
# Lock to avoid conflicting changes.
|
||||
lock_config || exit 1
|
||||
|
||||
echo "Configuring Chrony to start on boot with server $NTPSERVER ..."
|
||||
|
||||
SERVERLINE="server $NTPSERVER $POLLOPTS iburst prefer"
|
||||
echo "$SERVERLINE" > ${CONFIG_DIR}/ntp.sources.new
|
||||
|
||||
sync_config ntp.sources || exit 1
|
||||
|
||||
mkdir -p /etc/chrony/sources.d
|
||||
cp -p ${CONFIG_DIR}/ntp.sources /etc/chrony/sources.d
|
||||
|
||||
echo
|
||||
echo "New NTP configuration:"
|
||||
cat /etc/chrony/sources.d/ntp.sources
|
||||
echo
|
||||
|
||||
echo "Restarting Chrony ..."
|
||||
/etc/init.d/S49chrony restart
|
||||
}
|
||||
|
||||
# Disable starting Chrony during boot.
|
||||
ntpcfg_disable() {
|
||||
|
||||
# Lock to avoid conflicting changes.
|
||||
lock_config || exit 1
|
||||
|
||||
echo "Disabling Chrony startup on boot ..."
|
||||
|
||||
echo -n "" > ${CONFIG_DIR}/ntp.sources.new
|
||||
sync_config ntp.sources || exit 1
|
||||
|
||||
echo "Stopping Chrony ..."
|
||||
/etc/init.d/S49chrony stop
|
||||
|
||||
rm -f /etc/chrony/sources.d/ntp.sources
|
||||
}
|
||||
|
||||
case "$1" in
|
||||
show)
|
||||
ntpcfg_show
|
||||
;;
|
||||
server)
|
||||
ntpcfg_server "$@"
|
||||
;;
|
||||
disable)
|
||||
ntpcfg_disable
|
||||
;;
|
||||
*)
|
||||
script="${0##*/}"
|
||||
cat <<EOF
|
||||
Usage: $script {server|disable|show}
|
||||
|
||||
Manage NTP server configuration.
|
||||
|
||||
$script server {IP-address} [poll N]
|
||||
Enable starting Chrony during boot and specify NTP server to use.
|
||||
|
||||
Optionally, the poll interval can be specified as a power of 2 in seconds,
|
||||
for example "poll 5" means a polling interval of 32 seconds. By default,
|
||||
the poll interval starts at 6 (64 seconds) and slowly steps up to
|
||||
10 (1024 seconds).
|
||||
|
||||
Sub-millisecond accuracy can be achieved with an NTP server in the local
|
||||
network and "poll 0" (poll each second).
|
||||
|
||||
Do not use a poll interval shorter than 64 seconds unless the NTP server
|
||||
is in the local network. Doing this with a public NTP server is
|
||||
considered abuse.
|
||||
|
||||
$script disable
|
||||
Disable starting Chrony during boot and stop Chrony if it was running.
|
||||
|
||||
$script show
|
||||
Display NTP configuration.
|
||||
|
||||
EOF
|
||||
exit 1
|
||||
;;
|
||||
esac
|
||||
|
||||
exit $?
|
||||
|
||||
|
|
@ -33,6 +33,7 @@ read_config() {
|
|||
|
||||
# Copy config files to RAM filesystem.
|
||||
cp -a ${CONFIG_MOUNTPOINT}/*.conf $CONFIG_DIR || true
|
||||
cp -a ${CONFIG_MOUNTPOINT}/ntp.sources $CONFIG_DIR || true
|
||||
cp -a ${CONFIG_MOUNTPOINT}/dropbear_* $CONFIG_DIR || true
|
||||
|
||||
umount $CONFIG_MOUNTPOINT
|
||||
|
|
|
|||
Loading…
Reference in New Issue