as advised and documented, i'm trying to use the ntpd -gq instead of ntpdate. The result is that clock not set. as below. However ntpdate is working ok and had set the clock correctly
this is the ntp.conf file:
[root@CentOS5 ~]# cat /etc/ntp.conf
logfile /var/log/ntp.log
driftfile /var/lib/ntp/drift
server 0.centos.pool.ntp.org
this is the output of command:
[root@CentOS5 ~]# ntpd -dqg
ntpd 4.2.2p1@1.1570-o Sat Dec 19 00:58:16 UTC 2009 (1)
addto_syslog: precision = 1.000 usec
create_sockets(123)
addto_syslog: ntp_io: estimated max descriptors: 1024, initial socket boundary: 16
bind() fd 16, family 2, port 123, addr 0.0.0.0, flags=9
Added addr 0.0.0.0 to list of addresses
addto_syslog: Listening on interface wildcard, 0.0.0.0#123 Disabled
bind() fd 17, family 10, port 123, addr ::, flags=1
Added addr :: to list of addresses
addto_syslog: Listening on interface wildcard, ::#123 Disabled
bind() fd 18, family 10, port 123, addr ::1, flags=1
Added addr ::1 to list of addresses
addto_syslog: Listening on interface lo, ::1#123 Enabled
bind() fd 19, family 10, port 123, addr fe80::20c:29ff:fedc:9809, flags=1
Added addr fe80::20c:29ff:fedc:9809 to list of addresses
addto_syslog: Listening on interface eth0, fe80::20c:29ff:fedc:9809#123 Enabled
bind() fd 20, family 2, port 123, addr 127.0.0.1, flags=5
Added addr 127.0.0.1 to list of addresses
addto_syslog: Listening on interface lo, 127.0.0.1#123 Enabled
bind() fd 21, family 2, port 123, addr 192.168.180.129, flags=25
Added addr 192.168.180.129 to list of addresses
addto_syslog: Listening on interface eth0, 192.168.180.129#123 Enabled
init_io: maxactivefd 21
local_clock: time 0 base 0.000000 offset 0.000000 freq 0.000 state 0
addto_syslog: frequency initialized 0.000 PPM from /var/lib/ntp/drift
key_expire: at 0
peer_clear: at 0 next 1 assoc ID 53071 refid INIT
newpeer: 192.168.180.129->194.38.104.240 mode 3 vers 4 poll 6 10 flags 0x201 0x1 ttl 0 key 00000000
local_clock: time 0 base 0.000000 offset 0.000000 freq 0.000 state 1
report_event: system event 'event_restart' (0x01) status 'sync_alarm, sync_unspec, 1 event, event_unspec' (0xc010)
transmit: at 1 192.168.180.129->194.38.104.240 mode 3
auth_agekeys: at 1 keys 1 expired 0
timer: refresh ts 0
1 receive: at 1 192.168.180.129<-194.38.104.240 mode 4 code 1 auth 0
peer 194.38.104.240 event 'event_reach' (0x84) status 'unreach, conf, 1 event, event_reach' (0x8014)
clock_filter: n 1 off 42904.765724 del 0.610083 dsp 7.937506 jit 0.000001, age 0
transmit: at 2 192.168.180.129->194.38.104.240 mode 3
3 receive: at 2 192.168.180.129<-194.38.104.240 mode 4 code 1 auth 0
clock_filter: n 2 off 42905.489022 del 0.390840 dsp 3.937510 jit 0.723298, age 0
4 transmit: at 4 192.168.180.129->194.38.104.240 mode 3
5 receive: at 4 192.168.180.129<-194.38.104.240 mode 4 code 1 auth 0
clock_filter: n 3 off 42905.489022 del 0.390840 dsp 1.937534 jit 1.572867, age 2
6 transmit: at 6 192.168.180.129->194.38.104.240 mode 3
7 receive: at 7 192.168.180.129<-194.38.104.240 mode 4 code 1 auth 0
clock_filter: n 3 off 42905.489022 del 0.390840 dsp 0.937575 jit 1.572867, age 5
8 transmit: at 8 192.168.180.129->194.38.104.240 mode 3
9 receive: at 9 192.168.180.129<-194.38.104.240 mode 4 code 1 auth 0
clock_filter: n 3 off 42905.489022 del 0.390840 dsp 0.437603 jit 1.572867, age 7
10 transmit: at 10 192.168.180.129->194.38.104.240 mode 3
11 receive: at 10 192.168.180.129<-194.38.104.240 mode 4 code 1 auth 0
clock_filter: n 4 off 42905.489022 del 0.390840 dsp 0.187593 jit 2.808103, age 8
12 transmit: at 12 192.168.180.129->194.38.104.240 mode 3
13 receive: at 12 192.168.180.129<-194.38.104.240 mode 4 code 1 auth 0
clock_filter: n 5 off 42905.489022 del 0.390840 dsp 0.062621 jit 3.808021, age 10
14 transmit: at 14 192.168.180.129->194.38.104.240 mode 3
15 receive: at 14 192.168.180.129<-194.38.104.240 mode 4 code 1 auth 0
clock_filter: n 6 off 42905.489022 del 0.390840 dsp 0.000132 jit 4.733917, age 12
16 addto_syslog: no reply; clock not set
Also attached is the trace file, from the trace file, everything seems ok, timestamps is sent and received: