Hi all
I have what appears to be exactly the same problem as Gareth had back in
April, I followed that thread, but couldn't find a solution. The ntpd's
on the comp nodes fail to contact the headnode, but the ntpd on the
headnode works fine
Here are the details: Node 1 first, then headnode.
[EMAIL PROTECTED] root]# /etc/init.d/ntpd
start
ntpd: Synchronizing with time
server:
[FAILED]
Starting
ntpd:
[ OK ]
[EMAIL PROTECTED] root]# ntpq -p
remote
refid st t when poll reach
delay offset jitter
==============================================================================
LOCAL(0)
LOCAL(0) 10 l
47 64 1
0.000 0.000 0.008
Headnode
0.0.0.0 16
u - 64
0 0.000 0.000 4000.00
[EMAIL PROTECTED] root]# cat /etc/ntp.conf
# Added by OSCAR package ntpconfig
server oscar_server
restrict oscar_server mask 255.255.255.255
# Prohibit general access to this service.
restrict default ignore
# Permit all access over the loopback interface. This could
# be tightened as well, but to do so would effect some of
# the administrative functions.
restrict 127.0.0.1
# -- CLIENT NETWORK -------
# Permit systems on this network to synchronize with this
# time service. Do not permit those systems to modify the
# configuration of this service. Also, do not use those
# systems as peers for synchronization.
# restrict 192.168.1.0 mask 255.255.255.0 notrust nomodify notrap
# --- OUR TIMESERVERS -----
# or remove the default restrict line
# Permit time synchronization with our time source, but do not
# permit the source to query or modify the service on this system.
# restrict mytrustedtimeserverip mask 255.255.255.255 nomodify notrap
noquery
# server mytrustedtimeserverip
# --- NTP MULTICASTCLIENT ---
#multicastclient
# listen on default 224.0.1.1
# restrict 224.0.1.1 mask 255.255.255.255 notrust nomodify notrap
# restrict 192.168.1.0 mask 255.255.255.0 notrust nomodify notrap
# --- GENERAL CONFIGURATION ---
#
# Undisciplined Local Clock. This is a fake driver intended for
backup
# and when no outside source of synchronized time is available. The
# default stratum is usually 3, but in this case we elect to use
stratum
# 0. Since the server line does not have the prefer keyword, this
driver
# is never used for synchronization, unless no other other
# synchronization source is available. In case the local host is
# controlled by some external source, such as an external oscillator
or
# another protocol, the prefer keyword would cause the local host to
# disregard all other synchronization sources, unless the kernel
# modifications are in use and declare an unsynchronized condition.
#
server 127.127.1.0 # local clock
fudge 127.127.1.0 stratum 10
#
# Drift file. Put this in a directory which the daemon can write
to.
# No symbolic links allowed, either, since the daemon updates the
file
# by creating a temporary in the same directory and then
rename()'ing
# it to the file.
#
driftfile /var/lib/ntp/drift
broadcastdelay 0.008
#
# Authentication delay. If you use, or plan to use someday,
the
# authentication facility you should make the programs in the
auth_stuff
# directory and figure out what this number should be on your
machine.
#
# authenticate yes
#
# Keys file. If you want to diddle your server at run time, make
a
# keys file (mode 600 for sure) and define the key number to be
# used for making requests.
#
# PLEASE DO NOT USE THE DEFAULT VALUES HERE. Pick your own, or
remote
# systems might be able to reset your clock at will. Note also that
# ntpd is started with a -A flag, disabling authentication, that
# will have to be removed as well.
#
keys
/etc/ntp/keys
-----------------------------------------------------------------
OK, now the headnode....
[EMAIL PROTECTED] root]# /etc/init.d/ntpd
start
ntpd: Synchronizing with time
server:
[ OK ]
Starting
ntpd:
[ OK ]
[EMAIL PROTECTED] root]# ntpq -p
remote
refid st t when poll reach
delay offset jitter
==============================================================================
*mathfox.xs4all. auth2.xs4all.nl 3 u 469 512
377 170.566 1.307 13.197
[EMAIL PROTECTED] root]# cat /etc/ntp.conf
# Added by OSCAR package ntpconfig
# Prohibit general access to this service.
restrict default ignore
restrict 213.84.14.16 mask 255.255.255.255 nomodify notrap noquery
# Permit all access over the loopback interface. This could
# be tightened as well, but to do so would effect some of
# the administrative functions.
restrict 127.0.0.1
# -- CLIENT NETWORK -------
# Permit systems on this network to synchronize with this
# time service. Do not permit those systems to modify the
# configuration of this service. Also, do not use those
# systems as peers for synchronization.
# restrict 192.168.1.0 mask 255.255.255.0 notrust nomodify notrap
# --- OUR TIMESERVERS -----
# or remove the default restrict line
# Permit time synchronization with our time source, but do not
# permit the source to query or modify the service on this system.
# restrict mytrustedtimeserverip mask 255.255.255.255 nomodify notrap
noquery
# server mytrustedtimeserverip
# --- NTP MULTICASTCLIENT ---
#multicastclient
# listen on default 224.0.1.1
# restrict 224.0.1.1 mask 255.255.255.255 notrust nomodify notrap
# restrict 192.168.1.0 mask 255.255.255.0 notrust nomodify notrap
# --- GENERAL CONFIGURATION ---
#
# Undisciplined Local Clock. This is a fake driver intended for
backup
# and when no outside source of synchronized time is available. The
# default stratum is usually 3, but in this case we elect to use
stratum
# 0. Since the server line does not have the prefer keyword, this
driver
# is never used for synchronization, unless no other other
# synchronization source is available. In case the local host is
# controlled by some external source, such as an external oscillator
or
# another protocol, the prefer keyword would cause the local host to
# disregard all other synchronization sources, unless the kernel
# modifications are in use and declare an unsynchronized condition.
#
server 213.84.14.16
fudge 127.127.1.0 stratum 10
#
# Drift file. Put this in a directory which the daemon can write
to.
# No symbolic links allowed, either, since the daemon updates the
file
# by creating a temporary in the same directory and then
rename()'ing
# it to the file.
#
driftfile /var/lib/ntp/drift
broadcastdelay 0.008
#
# Authentication delay. If you use, or plan to use someday,
the
# authentication facility you should make the programs in the
auth_stuff
# directory and figure out what this number should be on your
machine.
#
# authenticate yes
#
# Keys file. If you want to diddle your server at run time, make
a
# keys file (mode 600 for sure) and define the key number to be
# used for making requests.
#
# PLEASE DO NOT USE THE DEFAULT VALUES HERE. Pick your own, or
remote
# systems might be able to reset your clock at will. Note also that
# ntpd is started with a -A flag, disabling authentication, that
# will have to be removed as well.
#
keys
/etc/ntp/keys
Many thanks for your help
Giles
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- [Oscar-devel] NTP fails to contact headnode Giles Lesser
