Currently, my time server is a Sun v240 with a 32-pci gps card (with a proprietary Solaris driver) attached to our gps receiver via an sma cable up to the roof of my building. As I'm migrating almost all of our Solaris servers and services over to CentOS, I'd like to know what other people are using for time server hardware. Any suggestions?
Andy Harrison wrote:
Currently, my time server is a Sun v240 with a 32-pci gps card (with a proprietary Solaris driver) attached to our gps receiver via an sma cable up to the roof of my building. As I'm migrating almost all of our Solaris servers and services over to CentOS, I'd like to know what other people are using for time server hardware. Any suggestions?
Since we don't have any pressing need for a high-precision time source, we just sync our main server to the public ntp.org pool and then have everything else in the building sync to the main server.
On Tue, Jul 21, 2009 at 4:23 PM, Bowie BaileyBowie_Bailey@buc.com wrote:
Since we don't have any pressing need for a high-precision time source, we just sync our main server to the public ntp.org pool and then have everything else in the building sync to the main server.
We do have a pressing need for high-precision time which is why I run a strat 1 time service in-house. I use other public strat 1 servers as backup only.
Andy Harrison wrote:
Currently, my time server is a Sun v240 with a 32-pci gps card (with a proprietary Solaris driver) attached to our gps receiver via an sma cable up to the roof of my building. As I'm migrating almost all of our Solaris servers and services over to CentOS, I'd like to know what other people are using for time server hardware. Any suggestions?
Not knowing what country your from but at a U.S. taxpayer I have no reservations about using time.nist.gov myself, some people think it's rude to directly query stratum 1 servers.
I typically have 2-3 NTP servers per location behind a load balancer and my internal servers sync against the load balanced VIP, and the NTP servers themselves sync against time.nist.gov
nate
On Tue, Jul 21, 2009 at 5:16 PM, natecentos@linuxpowered.net wrote:
Not knowing what country your from but at a U.S. taxpayer I have no reservations about using time.nist.gov myself, some people think it's rude to directly query stratum 1 servers.
My server already is a stratum 1 time server. I use other external strat 1 servers only as a backup. I was curious what hardware others are running to have their own internal strat 1 servers.
Not knowing what country your from but at a U.S. taxpayer I have no reservations about using time.nist.gov myself, some people think it's rude to directly query stratum 1 servers.
I typically have 2-3 NTP servers per location behind a load balancer and my internal servers sync against the load balanced VIP, and the NTP servers themselves sync against time.nist.gov
nate
I'm not trying to hijack this thread but I have a question about how typical this is for *core* infrastructure services. Do you load balance other services as well? I'm thinking of dns, ldap, proxy, internal web servers like a cms, radius, and probably more but those are some of the services I try to make fault tolerant. Thanks.
on 7-21-2009 12:29 PM Andy Harrison spake the following:
Currently, my time server is a Sun v240 with a 32-pci gps card (with a proprietary Solaris driver) attached to our gps receiver via an sma cable up to the roof of my building. As I'm migrating almost all of our Solaris servers and services over to CentOS, I'd like to know what other people are using for time server hardware. Any suggestions?
If there are other interfaces available, FreeBSD does well as a timeserver with SOME GPS receivers. But if it is working OK, I would just leave it running unless the hardware is going south.
On Tue, Jul 21, 2009 at 6:22 PM, Scott Silvassilva@sgvwater.com wrote:
If there are other interfaces available, FreeBSD does well as a timeserver with SOME GPS receivers. But if it is working OK, I would just leave it running unless the hardware is going south.
It's not so much that the hardware is currently going south, it's just Sun being Sun. When a box gets this old, they start charging ungodly amounts for support costs.
On Tue, 2009-07-21 at 18:36 -0400, Andy Harrison wrote:
On Tue, Jul 21, 2009 at 6:22 PM, Scott Silvassilva@sgvwater.com wrote:
If there are other interfaces available, FreeBSD does well as a timeserver with SOME GPS receivers. But if it is working OK, I would just leave it running unless the hardware is going south.
It's not so much that the hardware is currently going south, it's just Sun being Sun. When a box gets this old, they start charging ungodly amounts for support costs.
That's what eBay is for. ;^P
Dear Fellows:
I don't know if this is the right way to make this question but I have not an idea of how do that so here goes:
I want to update some packages of my CentOS (eg.: Apache, PHP, etc.); when I tried downloading the packages and requesting for it dependencies I need go online again and download then, and again, and again....very tired.
So I need a way to set a repo (I can make the REPO in one of my local servers) and once a request an update this come with dependences satisficied.
I'm not talking of make a "yum -y update"; is more liked an intelligent "rpm" with REPO connection. ;-)
Best Regards
Saludos Fraternales _____________________________ Atte. Alberto García Gómez M:.M:. Administrador de Redes/Webmaster IPI "Carlos Marx", Matanzas. Cuba. ----- Original Message ----- From: "Ron Loftin" reloftin@twcny.rr.com To: "CentOS mailing list" centos@centos.org Sent: Tuesday, July 21, 2009 6:40 PM Subject: Re: [CentOS] ntp time server
On Tue, 2009-07-21 at 18:36 -0400, Andy Harrison wrote:
On Tue, Jul 21, 2009 at 6:22 PM, Scott Silvassilva@sgvwater.com wrote:
If there are other interfaces available, FreeBSD does well as a timeserver with SOME GPS receivers. But if it is working OK, I would just leave it running unless the hardware is going south.
It's not so much that the hardware is currently going south, it's just Sun being Sun. When a box gets this old, they start charging ungodly amounts for support costs.
That's what eBay is for. ;^P
-- Ron Loftin reloftin@twcny.rr.com
"God, root, what is difference ?" Piter from UserFriendly
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Hi,
2009/7/23 Alberto García Gómez alberto@ipimtzcm.rimed.cu:
I'm not talking of make a "yum -y update"; is more liked an intelligent "rpm" with REPO connection. ;-)
"yum" is "rpm" with repository connection and dependency solving. There currently is no way to have RPM download and install dependencies by itself, that is what "yum" is for.
You should look into using "createrepo" to create a "yum" repository. It is not that hard.
Alternatively, you should look into already existing repositories for CentOS that contain the versions of Apache and PHP that you want.
HTH, Filipe
OK, maybe I don't write the right word, what I really need is an upgrade (eg.: from PHP5.1.x to PHP5.2.x, and so on) and I don't know do that using yum. What I do until know is downloading the packages from rpmfind.net and when they request me some dependencies I download those packages again, and again, and again......and that's what I want to avoid
Saludos Fraternales _____________________________ Atte. Alberto García Gómez M:.M:. Administrador de Redes/Webmaster IPI "Carlos Marx", Matanzas. Cuba. ----- Original Message ----- From: "Filipe Brandenburger" filbranden@gmail.com To: "CentOS mailing list" centos@centos.org Sent: Thursday, July 23, 2009 11:04 AM Subject: Re: [CentOS] UPDATE over REPO
Hi,
2009/7/23 Alberto García Gómez alberto@ipimtzcm.rimed.cu:
I'm not talking of make a "yum -y update"; is more liked an intelligent "rpm" with REPO connection. ;-)
"yum" is "rpm" with repository connection and dependency solving. There currently is no way to have RPM download and install dependencies by itself, that is what "yum" is for.
You should look into using "createrepo" to create a "yum" repository. It is not that hard.
Alternatively, you should look into already existing repositories for CentOS that contain the versions of Apache and PHP that you want.
HTH, Filipe _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Alberto García Gómez wrote:
OK, maybe I don't write the right word, what I really need is an upgrade (eg.: from PHP5.1.x to PHP5.2.x, and so on) and I don't know do that using yum. What I do until know is downloading the packages from rpmfind.net and when they request me some dependencies I download those packages again, and again, and again......and that's what I want to avoid
I wonder why we write all that documentation ...
http://wiki.centos.org/AdditionalResources/Repositories
Ralph
2009/7/24 Alberto García Gómez alberto@ipimtzcm.rimed.cu:
OK, maybe I don't write the right word, what I really need is an upgrade (eg.: from PHP5.1.x to PHP5.2.x, and so on) and I don't know do that using yum. What I do until know is downloading the packages from rpmfind.net and when they request me some dependencies I download those packages again, and again, and again......and that's what I want to avoid
Not sure if this is precisely what you mean, but I have a similar issue.
I run some production RedHat servers (4.x) and CentOS for development and test instances. The Apache/PHP packages we require are not available via repos as they need some specific Oracle, Perl and other miscellaneous packages. I need to rebuild the packages because of these dependencies.
To ease the process, I use the Sourcexx: lines in the rpm spec file to automatically retrieve sources from their online homes. This works if the URLs are relatively consistent. For example:
Source0: http://www.apache.org/dist/httpd/httpd-%%7Bversion%7D.tar.gz
You could add another local server containing those packages then use the Source line to specify the location of your local server.
On 7/23/09, Alberto García Gómez alberto@ipimtzcm.rimed.cu wrote: <snip>
I want to update some packages of my CentOS (eg.: Apache, PHP, etc.); when I tried downloading the packages and requesting for it dependencies I need go online again and download then, and again, and again....very tired.
So I need a way to set a repo (I can make the REPO in one of my local servers) and once a request an update this come with dependences satisficied.
I'm not talking of make a "yum -y update"; is more liked an intelligent "rpm" with REPO connection. ;-)
Bienvenido Alberto: Your written English is very good. I believe you may also find some information in Spanish on the CentOS.org web site and a Spanish language mailing list, but the majority of the activity is on this mailing list. You may want to add the rpmforge and EPEL repositories. Be sure to add the yum-priorities plug in. http://wiki.centos.org/PackageManagement/Yum/Priorities If you add EPEL, I suggest that you give it a very low priority or it will replace a *lot* of packages in your CentOS box. Please remember that this is an Enterprise distro and if you upgrade core packages and you break it, it is your problem to fix...... :-) Saludos desde Colombia
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Alberto García Gómez -
Andy Harrison -
Bowie Bailey -
Filipe Brandenburger -
John R Pierce -
Kwan Lowe -
Lanny Marcus -
nate -
Ralph Angenendt -
Ron Loftin -
Scott McClanahan -
Scott Silva