biolocal:Ntpservers - Revision history

Mauro: /* Cluster nodes ntp server */

2009-11-10T14:55:15Z

Cluster nodes ntp server

←Older revision		Revision as of 14:55, 10 November 2009
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	== Cluster nodes ntp server ==		== Cluster nodes ntp server ==
	Differently from other machines, cluster nodes are synchronized by using ''ntpdate'' and no deamon ntpd is necessary.		Differently from other machines, cluster nodes are synchronized by using ''ntpdate'' and no deamon ntpd is necessary.
-	Cluster nodes ntp server is '''ntp.computing.ceinge.unina.it''' (=ceingeauth01) and they are synchronized by cron through a script (/etc/cron.hourly/ntpdate.cron) ~~launche~~ hourly.	+	Cluster nodes ntp server is '''ntp.computing.ceinge.unina.it''' (=ceingeauth01) and they are synchronized by cron through a script (/etc/cron.hourly/ntpdate.cron) launched hourly.

	[node~]# cat /etc/cron.hourly/ntpdate.cron		[node~]# cat /etc/cron.hourly/ntpdate.cron

Mauro: /* Cluster nodes ntp server */

2009-11-10T14:46:56Z

Cluster nodes ntp server

←Older revision		Revision as of 14:46, 10 November 2009
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	== Cluster nodes ntp server ==		== Cluster nodes ntp server ==
-	Cluster nodes ntp server is '''ntp.computing.ceinge.unina.it''' (=ceingeauth01).	+	Differently from other machines, cluster nodes are synchronized by using ''ntpdate'' and no deamon ntpd is necessary.
-	~~Differently from other machines, nodes~~ are synchronized ~~by ntpdate launched~~ by cron ~~hourly~~ through a script (/etc/cron.hourly/ntpdate.cron).	+	Cluster nodes ntp server is '''ntp.computing.ceinge.unina.it''' (=ceingeauth01) and they are synchronized by cron through a script (/etc/cron.hourly/ntpdate.cron) launche hourly.

	[node~]# cat /etc/cron.hourly/ntpdate.cron		[node~]# cat /etc/cron.hourly/ntpdate.cron

Mauro: /* Cluster nodes ntp server */

2009-11-10T14:43:04Z

Cluster nodes ntp server

←Older revision		Revision as of 14:43, 10 November 2009
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	== Cluster nodes ntp server ==		== Cluster nodes ntp server ==
	Cluster nodes ntp server is '''ntp.computing.ceinge.unina.it''' (=ceingeauth01).		Cluster nodes ntp server is '''ntp.computing.ceinge.unina.it''' (=ceingeauth01).
-	Differently from other ~~servers~~, nodes are synchronized by ntpdate launched by cron hourly through a script (/etc/cron.hourly/ntpdate.cron).	+	Differently from other machines, nodes are synchronized by ntpdate launched by cron hourly through a script (/etc/cron.hourly/ntpdate.cron).

	[node~]# cat /etc/cron.hourly/ntpdate.cron		[node~]# cat /etc/cron.hourly/ntpdate.cron

Mauro: /* Cluster nodes ntp server */

2009-11-10T14:42:45Z

Cluster nodes ntp server

←Older revision		Revision as of 14:42, 10 November 2009
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	== Cluster nodes ntp server ==		== Cluster nodes ntp server ==
	Cluster nodes ntp server is '''ntp.computing.ceinge.unina.it''' (=ceingeauth01).		Cluster nodes ntp server is '''ntp.computing.ceinge.unina.it''' (=ceingeauth01).
-	Differently from other servers, nodes are synchronized by ntpdate launched by cron hourly through a script (/etc/cron.hourly/ntpdate.cron):	+	Differently from other servers, nodes are synchronized by ntpdate launched by cron hourly through a script (/etc/cron.hourly/ntpdate.cron).
		+
		+	[node~]# cat /etc/cron.hourly/ntpdate.cron
	#!/bin/sh		#!/bin/sh

	/usr/sbin/ntpdate -s -b -p 8 -u ntp.computing.ceinge.unina.it		/usr/sbin/ntpdate -s -b -p 8 -u ntp.computing.ceinge.unina.it

Mauro: /* Cluster nodes ntp server */

2009-11-10T14:41:59Z

Cluster nodes ntp server

←Older revision		Revision as of 14:41, 10 November 2009
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	== Cluster nodes ntp server ==		== Cluster nodes ntp server ==
	Cluster nodes ntp server is '''ntp.computing.ceinge.unina.it''' (=ceingeauth01).		Cluster nodes ntp server is '''ntp.computing.ceinge.unina.it''' (=ceingeauth01).
-	Differently from other servers, ~~they~~ are synchronized by ~~script~~ launched by cron hourly~~, which is located in~~ /etc/cron.hourly/ntpdate.cron~~. It is~~:	+	Differently from other servers, nodes are synchronized by ntpdate launched by cron hourly through a script (/etc/cron.hourly/ntpdate.cron):
	#!/bin/sh		#!/bin/sh

	/usr/sbin/ntpdate -s -b -p 8 -u ntp.computing.ceinge.unina.it		/usr/sbin/ntpdate -s -b -p 8 -u ntp.computing.ceinge.unina.it

Mauro: /* Cluster nodes ntp server */

2009-11-10T14:39:48Z

Cluster nodes ntp server

←Older revision		Revision as of 14:39, 10 November 2009
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	== Cluster nodes ntp server ==		== Cluster nodes ntp server ==
-	Cluster nodes ntp server is '''ntp.computing.ceinge.unina.it''' (=ceingeauth01). ~~All cluster nodes need topoint~~ ~~to it~~.	+	Cluster nodes ntp server is '''ntp.computing.ceinge.unina.it''' (=ceingeauth01).
		+	Differently from other servers, they are synchronized by script launched by cron hourly, which is located in /etc/cron.hourly/ntpdate.cron. It is:
		+	#!/bin/sh
		+
		+	/usr/sbin/ntpdate -s -b -p 8 -u ntp.computing.ceinge.unina.it

Mauro: /* Ceinge NTP servers */

2009-11-10T14:05:34Z

Ceinge NTP servers

←Older revision		Revision as of 14:05, 10 November 2009
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	* '''ntp2.ceinge.unina.it''' (=ceingeauth02).		* '''ntp2.ceinge.unina.it''' (=ceingeauth02).
	* '''ntp.ceinge.unina.it''' (=pc-network): OLD, will be dismissed		* '''ntp.ceinge.unina.it''' (=pc-network): OLD, will be dismissed
		+	* '''ntp.computing.ceinge.unina.it''' (=bpe): OLD, it has been dismissed

	ntp1 and ntp2 are configured as follows, in the /etc/ntpd.conf file		ntp1 and ntp2 are configured as follows, in the /etc/ntpd.conf file

Mauro: /* Cluster nodes ntp server */

2009-11-10T14:04:48Z

Cluster nodes ntp server

←Older revision		Revision as of 14:04, 10 November 2009
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	== Cluster nodes ntp server ==		== Cluster nodes ntp server ==
-	Cluster nodes ntp server is '''ntp.computing.ceinge.unina.it''' (=ceingeauth01). All cluster nodes ~~points~~ to it.	+	Cluster nodes ntp server is '''ntp.computing.ceinge.unina.it''' (=ceingeauth01). All cluster nodes need topoint to it.

Mauro at 14:02, 10 November 2009

2009-11-10T14:02:12Z

←Older revision		Revision as of 14:02, 10 November 2009
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	ntp1 and ntp2 are configured as follows, in the /etc/ntpd.conf file		ntp1 and ntp2 are configured as follows, in the /etc/ntpd.conf file
-	~~<pre>~~	+	# restriction to CEINGE DBBM network only
-	# restriction to CEINGE DBBM network only	+	restrict 143.225.151.0 mask 255.255.255.0 nomodify notrap
-	restrict 143.225.151.0 mask 255.255.255.0 nomodify notrap	+	restrict 192.168.0.0 mask 255.255.0.0 nomodify notrap
-	restrict 192.168.0.0 mask 255.255.0.0 nomodify notrap	+	restrict 143.225.208.0 mask 255.255.255.0 nomodify notrap
-	restrict 143.225.208.0 mask 255.255.255.0 nomodify notrap	+	restrict 143.225.149.0 mask 255.255.255.0 nomodify notrap
-	restrict 143.225.149.0 mask 255.255.255.0 nomodify notrap	+

-	# servers used for clock sync	+	# servers used for clock sync
-	server 0.it.pool.ntp.org	+	server 0.it.pool.ntp.org
-	server 1.it.pool.ntp.org	+	server 1.it.pool.ntp.org
-	server 2.it.pool.ntp.org	+	server 2.it.pool.ntp.org
-	server 3.it.pool.ntp.org	+	server 3.it.pool.ntp.org
-	server 0.centos.pool.ntp.org	+	server 0.centos.pool.ntp.org
-	server 1.centos.pool.ntp.org	+	server 1.centos.pool.ntp.org
-	server 2.centos.pool.ntp.org	+	server 2.centos.pool.ntp.org

-	# restriction for limiting remote servers access	+	# restriction for limiting remote servers access
-	restrict 0.centos.pool.ntp.org mask 255.255.255.255 nomodify notrap noquery	+	restrict 0.centos.pool.ntp.org mask 255.255.255.255 nomodify notrap noquery
-	restrict 1.centos.pool.ntp.org mask 255.255.255.255 nomodify notrap noquery	+	restrict 1.centos.pool.ntp.org mask 255.255.255.255 nomodify notrap noquery
-	restrict 2.centos.pool.ntp.org mask 255.255.255.255 nomodify notrap noquery	+	restrict 2.centos.pool.ntp.org mask 255.255.255.255 nomodify notrap noquery
-	restrict 0.it.pool.ntp.org mask 255.255.255.255 nomodify notrap noquery	+	restrict 0.it.pool.ntp.org mask 255.255.255.255 nomodify notrap noquery
-	restrict 1.it.pool.ntp.org mask 255.255.255.255 nomodify notrap noquery	+	restrict 1.it.pool.ntp.org mask 255.255.255.255 nomodify notrap noquery
-	restrict 2.it.pool.ntp.org mask 255.255.255.255 nomodify notrap noquery	+	restrict 2.it.pool.ntp.org mask 255.255.255.255 nomodify notrap noquery
-	~~</pre>~~	+

	== NTP client configuration ==		== NTP client configuration ==

	In order to use them, in the client /etc/ntp.conf file, comment all other servers and add the lines:		In order to use them, in the client /etc/ntp.conf file, comment all other servers and add the lines:
-	~~<pre>~~	+	server ntp1.ceinge.unina.it
-	server ntp1.ceinge.unina.it	+	server ntp2.ceinge.unina.it
-	server ntp2.ceinge.unina.it	+	restrict ntp1.ceinge.unina.it mask 255.255.255.255 nomodify notrap noquery
-	restrict ntp1.ceinge.unina.it mask 255.255.255.255 nomodify notrap noquery	+	restrict ntp2.ceinge.unina.it mask 255.255.255.255 nomodify notrap noquery
-	restrict ntp2.ceinge.unina.it mask 255.255.255.255 nomodify notrap noquery	+
-	~~</pre>~~	+

	== Cluster nodes ntp server ==		== Cluster nodes ntp server ==
-	Cluster nodes ntp server is ntp.computing.ceinge.unina.it (=ceingeauth01). All cluster nodes points to it.	+	Cluster nodes ntp server is '''ntp.computing.ceinge.unina.it''' (=ceingeauth01). All cluster nodes points to it.

Mauro at 14:01, 10 November 2009

2009-11-10T14:01:02Z

←Older revision		Revision as of 14:01, 10 November 2009
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	</pre>		</pre>

-	==NTP client configuration ==	+	== NTP client configuration ==

	In order to use them, in the client /etc/ntp.conf file, comment all other servers and add the lines:		In order to use them, in the client /etc/ntp.conf file, comment all other servers and add the lines: