NTP - Revision history

Luc Morissette: Updated link to support tabs

2024-02-20T17:55:58Z

Updated link to support tabs

← Older revision		Revision as of 13:55, 20 February 2024
Line 1:		Line 1:

	'''Starting from version 2.9, the timezone can be configured from the web portal in the services section:'''		'''Starting from version 2.9, the timezone can be configured from the web portal in the services section:'''
	~~[[Toolpack~~:~~System_Settings_B#~~Services\|Set NTP servers in Date/Time Services]]		*{{#switchtablink:Services\|Set NTP servers in Date/Time Services\|Toolpack:System_Settings_B}}

Luc Morissette at 21:00, 12 November 2018

2018-11-12T21:00:05Z

← Older revision		Revision as of 17:00, 12 November 2018
Line 1:		Line 1:

	'''Starting from version 2.9, the timezone can be configured from the web portal in the services section:'''		'''Starting from version 2.9, the timezone can be configured from the web portal in the services section:'''
	[[Toolpack:System_Settings_B#~~Service~~\|Set NTP servers in Date/Time Services]]		[[Toolpack:System_Settings_B#Services\|Set NTP servers in Date/Time Services]]

Nicole Tan: Correction for the command to install ntp

2017-03-10T16:30:07Z

Correction for the command to install ntp

← Older revision		Revision as of 12:30, 10 March 2017
Line 25:		Line 25:
	= Manual configuration <br> =		= Manual configuration <br> =
	== Installing NTP<br> ==		== Installing NTP<br> ==
	<pre>yum install ~~ntpd~~		<pre>yum install ntp
	</pre>		</pre>
	== Configuring NTP ==		== Configuring NTP ==

Luc Morissette: LM Added link to Services

2016-08-11T13:32:00Z

LM Added link to Services

← Older revision		Revision as of 09:32, 11 August 2016
Line 1:		Line 1:

			'''Starting from version 2.9, the timezone can be configured from the web portal in the services section:'''
			[[Toolpack:System_Settings_B#Service\|Set NTP servers in Date/Time Services]]


	= System Configuration =		= System Configuration =

	== Network Time Protocol (NTP) configuration <br> ==		== Network Time Protocol (NTP) configuration <br> ==
	On new units, NTP comes pre-installed and activated by default. <br>		On new units, NTP comes pre-installed and activated by default. <br>

Luc Morissette: Added tbntpconfig function

2015-07-14T14:46:18Z

Added tbntpconfig function

@@ Line 1: / Line 1: @@
 == Installing NTP<br>  ==
 <pre>yum install ntpd
@@ Line 36: / Line 55: @@
 You can use the following command to enable NTP:<br>
 <pre>chkconfig ntpd on
 service ntpd start
 </pre>
 == Verify NTP server status<br>  ==

Cbilodeau: moved How to start NTP to NTP: simplify title

2013-01-07T15:24:00Z

moved How to start NTP to NTP: simplify title

← Older revision	Revision as of 11:24, 7 January 2013
(No difference)

Cbilodeau: change title size

2011-02-11T21:00:45Z

change title size

← Older revision		Revision as of 17:00, 11 February 2011
Line 32:		Line 32:
	<pre>ntpdate 0.ca.pool.ntp.org		<pre>ntpdate 0.ca.pool.ntp.org
	</pre>		</pre>
	=== Start NTP<br> ===		== Start NTP<br> ==

	You can use the following command to enable NTP:<br>		You can use the following command to enable NTP:<br>
Line 43:		Line 43:
	To verify the synchronization between the host and the NTP servers:		To verify the synchronization between the host and the NTP servers:
	<pre>ntpq -p</pre>		<pre>ntpq -p</pre>
	'''Note''': After starting the NTP service, the system requires at least 10 minutes to accept a reference server.		'''Note''': After starting the NTP service, the system requires at least 10 minutes to accept a reference server.

	<br>Example of host synched with barricade.rack9: <br>		<br>Example of host synched with barricade.rack9: <br>

Cbilodeau: add details

2011-02-11T20:58:39Z

add details

← Older revision		Revision as of 16:58, 11 February 2011
Line 1:		Line 1:
	== Installing NTP<br> ==		== Installing NTP<br> ==
	<pre>yum install ntpd		<pre>yum install ntpd
	</pre>		</pre>
	== Configuring NTP ==		== Configuring NTP ==

	=== Setting the time zone<br> ===		=== Setting the time zone<br> ===

	Make sure that the host time zone is set properly. To modify the time zone go [http://kezhong.wordpress.com/2010/03/08/change-timezone-on-centos-5-4/ here]<br>		Make sure that the host time zone is set properly. To modify the time zone go [http://kezhong.wordpress.com/2010/03/08/change-timezone-on-centos-5-4/ here]<br>

	=== Setting the DNS server<br> ===		=== Setting the DNS server<br> ===

	Make sure your nameserver (DNS) is configured correctly (see [[TBLinux:~~How_to_change_the_ip_address~~\|Modify the dhcp client configuration]]).<br>		Make sure your nameserver (DNS) is configured correctly (see [[TBLinux:How to change the ip address\|Modify the dhcp client configuration]]).<br>

	=== Modify NTP Server List<br> ===		=== Modify NTP Server List (Optional)<br> ===

	Modify your ntp server list		Modify your ntp server list
	<pre>vim /etc/ntp.conf</pre>		<pre>vim /etc/ntp.conf</pre>
	Change the server list for those closer to your server. List can be found [http://www.pool.ntp.org/en/ here]<br>Example for Canadian servers: <br>		Change the server list for those closer to your server. List can be found [http://www.pool.ntp.org/en/ here]<br>Example for Canadian servers: <br>
	<pre>server 0.ca.pool.ntp.org		<pre>server 0.ca.pool.ntp.org
	server 1.ca.pool.ntp.org		server 1.ca.pool.ntp.org
Line 22:		Line 22:
	server 3.ca.pool.ntp.org		server 3.ca.pool.ntp.org

	</pre>		</pre>
	=== Synchronize the host date with the NTP server<br> ===		=== Synchronize the host date with the NTP server<br> ===

	'''Warning''': This may result is a jump in time of several minutes.<br>		'''Warning''': This may result is a jump in time of several minutes.<br>

	Use ntpdate to synchronize your server time with a NTP server.<br>		Use ntpdate to synchronize your server time with a NTP server.<br>

	Example showing a host synchronization with a Canadian server.<br>		Example showing a host synchronization with a Canadian server.<br>
	<pre>ntpdate 0.ca.pool.ntp.org		<pre>ntpdate 0.ca.pool.ntp.org
	</pre>		</pre>
	=== Start NTP<br> ===		=== Start NTP<br> ===

	You can use the following command to enable NTP:<br>		You can use the following command to enable NTP:<br>
Line 39:		Line 39:

	</pre>		</pre>
	== Verify NTP server status<br> ==		== Verify NTP server status<br> ==

	To ~~synchronize~~ NTP:		To verify the synchronization between the host and the NTP servers:
	<pre>ntpq -p</pre>		<pre>ntpq -p</pre>
	<br>Example of host synched with barricade.rack9: <br>		'''Note''': After starting the NTP service, the system requires at least 10 minutes to accept a reference server.

			<br>Example of host synched with barricade.rack9: <br>
	<pre> remote refid st t when poll reach delay offset jitter		<pre> remote refid st t when poll reach delay offset jitter
	==============================================================================		==============================================================================

Cbilodeau: fix ntp procedure

2011-02-11T20:56:05Z

fix ntp procedure

@@ Line 1: / Line 1: @@
-You can use the following command to check if it's enabled:<br>
+== Installing NTP<br> ==
-<pre> pgrep ntpd
+<pre>yum install ntpd
 </pre>
 You can use the following command to enable NTP:<br>
-<pre>yum install ntpd
+<pre>chkconfig ntpd on
 service ntpd start
 </pre>
-Make sure your nameserver (DNS) is configured&nbsp; correctly (see [http://docs.telcobridges.com/mediawiki/index.php/TBLinux:How_to_change_the_ip_address Modify the dhcp client configuration]).<br>
+== Verify NTP server status<br> ==
-To synchronize NTP: <br>
+To synchronize NTP:
 <pre>ntpq -p</pre>
-It will display a list of servers and the server which is currently synced should be prepended by a '*'. For example:
+<br>Example of host synched with barricade.rack9: <br>
 <pre>     remote           refid      st t when poll reach   delay   offset  jitter
 ==============================================================================
@@ Line 22: / Line 50: @@
 +cheezum.mattnor 129.7.1.66       2 u   91 1024  377   45.715    1.504  47.753
 </pre>
-In this case the host's time is synced with barricade.rack9.
+The '*' represent the current reference server<br>The '+' represent a potential backup reference server<br>The '-' represent a rejected reference server<br>

Luc Morissette at 21:39, 1 December 2010

2010-12-01T21:39:56Z

← Older revision		Revision as of 17:39, 1 December 2010
Line 1:		Line 1:
	You can use the following command to check if it's enabled:<br>		You can use the following command to check if it's enabled:<br>
	<pre>~~ntpdate -q</pre><pre>chkconfig --list \| grep~~ ntpd</pre>		<pre> pgrep ntpd
	~~If all the columns are 'off', then it's not enabled.~~		</pre>

	You can use the following command to enable NTP:<br>		You can use the following command to enable NTP:<br>
	<pre>yum install ntpd		<pre>yum install ntpd
	chkconfig ntpd on~~</pre>~~		chkconfig ntpd on
	~~Then use the following command to start it:<br>~~		service ntpd start
	~~<pre>~~service ntpd start
	</pre>		</pre>
	You can ~~check if~~ the ~~time is~~ in ~~sync using~~:<br>		Make sure your nameserver (DNS) is configured  correctly (see [http://docs.telcobridges.com/mediawiki/index.php/TBLinux:How_to_change_the_ip_address Modify the dhcp client configuration]).<br>

			You can change the servers to synchronize NTP in /etc/ntp.conf

			You can change your local timezone with the /etc/localtime link<br>

			To synchronize NTP: <br>
	<pre>ntpq -p</pre>		<pre>ntpq -p</pre>
	It will display a list of servers and the server which is currently synced should be prepended by a '*'. For example:		It will display a list of servers and the server which is currently synced should be prepended by a '*'. For example:
Line 18:		Line 22:
	+cheezum.mattnor 129.7.1.66 2 u 91 1024 377 45.715 1.504 47.753		+cheezum.mattnor 129.7.1.66 2 u 91 1024 377 45.715 1.504 47.753
	</pre>		</pre>
	In this case the host's time is synced with ~~arricade~~.rack9.		In this case the host's time is synced with barricade.rack9.