Re: [CentOS] Question about ntp
Once upon a time, Jobst Schmalenbach said: > Chrony cannot supply time info, so if you have clients requesting time info > the server cannot serve time, you need ntpd for that. I have many windows > stations that pull time from my CentOS servers. That is not correct. In the default config, chrony doesn't serve time, which is a good thing (see: all the problems with ntpd serving a lot more than time). All you have to do is uncomment/add "allow" lines in /etc/chrony.conf. -- Chris Adams ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] multilib problem during "yum update"
On Mon, 2019-05-27 at 14:05 +1000, Bill Maidment wrote: > > ---> Package libgpg-error.x86_64 0:1.13-1.el7.centos will be an > > update > > ---> Package libgpg-error-debuginfo.x86_64 0:1.13-1.el7.centos will > > be an update > > ---> Package libgpg-error-devel.x86_64 0:1.13-1.el7.centos will be > > an update > > The update for libgpg-error.i686 1.13-1 seems to be missing Where are the libgpg-error 1.13-1.el7.centos packages coming from? They're not in CentOS updates (or RHEL updates either). -- Ian ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Question about ntp
On Mon, May 27, 2019 at 09:50:51PM -0400, Fred Smith (fre...@fcshome.stoneham.ma.us) wrote: > On Tue, May 28, 2019 at 11:44:35AM +1000, Jobst Schmalenbach wrote: > > On Mon, May 27, 2019 at 06:32:19AM +0200, Ralf Prengel > > (ralf.pren...@rprengel.de) wrote: > > > > > It's hard to imagine that someone would have REMOVED that ability in > the intervening years I read a couple of comparisons some time back, I learned chrony cannot server time. The comparison might have been wrong! I just read this, so I stand corrected: https://chrony.tuxfamily.org/comparison.html -- Jobst Schmalenbach Egotism is pain, and the only way to end it is to cease to believe that the world revolves around one's petty life. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Question about ntp
On Tue, May 28, 2019 at 11:44:35AM +1000, Jobst Schmalenbach wrote: > On Mon, May 27, 2019 at 06:32:19AM +0200, Ralf Prengel > (ralf.pren...@rprengel.de) wrote: > > > > Hallo, > > > > what is the standard way to sync time under Centos 7. > > ntp or chrony. > > YMMV. > > I have used NTP for many, many years so I am familiar with it and also have > ALL config files, I normally just delete chrony and install ntpd, then copy > the config files and start ntp. All done, 2 minutes. > > Chrony cannot supply time info, so if you have clients requesting time info > the server cannot serve time, you need ntpd for that. I have many windows > stations that pull time from my CentOS servers. Back when I used chrony in my home LAN it certainly did serve time. I brought it up on my firewall (an old PC running SmoothWall) as a local time server and it worked great for that purpose. It's hard to imagine that someone would have REMOVED that ability in the intervening years -- Fred Smith -- fre...@fcshome.stoneham.ma.us - "And he will be called Wonderful Counselor, Mighty God, Everlasting Father, Prince of Peace. Of the increase of his government there will be no end. He will reign on David's throne and over his kingdom, establishing and upholding it with justice and righteousness from that time on and forever." --- Isaiah 9:7 (niv) -- ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Question about ntp
On Mon, May 27, 2019 at 06:32:19AM +0200, Ralf Prengel (ralf.pren...@rprengel.de) wrote: > > Hallo, > > what is the standard way to sync time under Centos 7. > ntp or chrony. YMMV. I have used NTP for many, many years so I am familiar with it and also have ALL config files, I normally just delete chrony and install ntpd, then copy the config files and start ntp. All done, 2 minutes. Chrony cannot supply time info, so if you have clients requesting time info the server cannot serve time, you need ntpd for that. I have many windows stations that pull time from my CentOS servers. -- Jobst Schmalenbach A computer without Microsoft is like chocolate cake without ketchup! ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Older versions of samba that work with CentOS 7?
On Mon, May 27, 2019 at 12:43:41PM +0200, Miroslav Geisselreiter (m...@intar.cz) wrote: > Hi Jobst, > > you can use latest samba package from CentOS 7 - there is no problem with NT > style domains support (ie. it supports NT style domains). We use servers > with CentOS 6 and CentOS 7 both with NT style domains. Phew! Thank you, this is great news! I had huge trouble to get the samba server started after I ported it onto a CentOS 7 machine. I tried to start it with systemctl start smbd nmbd winbind samba and it failed without error messages. So I has asked a question on the Samba mailing list. They told me I should do this as systemctl stop smbd nmbd winbind samba systemctl disable smbd nmbd winbind samba systemctl mask smbd nmbd winbind samba systemctl unmask samba-ad-dc systemctl enable samba-ad-dc systemctl start samba-ad-dc Can you confirm, you start this with systemctl start samba-ad-dc thanks -- Jobst Schmalenbach Sendmail administration is not black magic. There are legitimate technical reasons why it requires the sacrificing of a live chicken. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS-virt] CentOS 7 Xen 4.12 libvirt/virt-manager wrong path for qemu-system-i386
Hi,
On Wed, May 22, 2019 at 10:46:25AM +0100, Anthony PERARD wrote:
> On Sun, May 05, 2019 at 02:23:22PM +0300, Pasi Kärkkäinen wrote:
> > Hello,
>
> Thanks for the bug report.
>
> > While testing Virt-SIG Xen 4.12 rpms on CentOS7 I noticed the following
> > problem with libvirt/virt-manager when manually installing a new HVM guest
> > from virt-manager GUI.. basicly the VM installation won't start, because
> > libvirt/virt-manager is not able to start the VM, due to "missing"
> > qemu-system-i386 binary:
> >
> > Unable to complete install: 'unsupported configuration: emulator
> > '/usr/lib/xen/bin/qemu-system-i386' not found'
> >
> > Traceback (most recent call last):
> > File "/usr/share/virt-manager/virtManager/asyncjob.py", line 89, in
> > cb_wrapper
> > callback(asyncjob, *args, **kwargs)
> > File "/usr/share/virt-manager/virtManager/create.py", line 2553, in
> > _do_async_install
> > guest.start_install(meter=meter)
> > File "/usr/share/virt-manager/virtinst/guest.py", line 498, in
> > start_install
> > doboot, transient)
> > File "/usr/share/virt-manager/virtinst/guest.py", line 434, in
> > _create_guest
> > domain = self.conn.createXML(install_xml or final_xml, 0)
> > File "/usr/lib64/python2.7/site-packages/libvirt.py", line 3725, in
> > createXML
> > if ret is None:raise libvirtError('virDomainCreateXML() failed',
> > conn=self)
> > libvirtError: unsupported configuration: emulator
> > '/usr/lib/xen/bin/qemu-system-i386' not found
>
> Starting a guest with libvirt works fine, libvirt is able to find the
> qemu binary. (Well, libxl can...)
>
> Here is an osstest flight starting an HVM guest with libvirt:
> http://logs.test-lab.xenproject.org/osstest/logs/136701/test-amd64-amd64-libvirt-qemuu-debianhvm-amd64/info.html
>
> Maybe the issue is that I need to rebuild `libvirt-python' and
> `virt-manager' packages?
>
Hmm.. maybe. I guess we need to investigate a bit more where the directory path
is actually coming from..
> > Quick'n'dirty fix is to create a symlink:
> >
> > ln -s /usr/lib64/xen/bin/qemu-system-i386
> > /usr/lib/xen/bin/qemu-system-i386
> >
> > .. after creating that symlink the VM can be started just fine and works OK.
> >
> > We need to fix that default directory path for qemu-system-i386 to be
> > correct out-of-the-box..
>
> I can certainly move the binary from "/usr/lib64" to "/usr/lib", and
> hope it doesn't break anything, with Xen 4.10 packages the qemu binary
> is in /usr/lib64. But to be honest I don't know which is best for CentOS
> between "lib64" and "lib".
>
I think /usr/lib64/ is the correct location, as the qemu-system-i386 binary is
64bit:
# file /usr/lib64/xen/bin/qemu-system-i386
/usr/lib64/xen/bin/qemu-system-i386: ELF 64-bit LSB shared object, x86-64,
version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32,
BuildID[sha1]=12576991824bc1611d8630aaa30df9b00f175980, stripped
> --
> Anthony PERARD
Thanks,
-- Pasi
___
CentOS-virt mailing list
CentOS-virt@centos.org
https://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS] Question about ntp
On Mon, May 27, 2019 at 04:29:28PM +0100, Pete Biggs wrote: > > > > > what is the standard way to sync time under Centos 7. > > ntp or chrony. > > > chrony syncs to an NTP server, in the same way that ntp syncs to an NTP > server. The both work. > > I have both ntpd (under CentOS 6) and chronyd (under CentOS 7) NTP > servers on my network, they all work fine together. > > P. I used chrony at home, a couple of decades ago (give or take) way back when I was on dialup, because if its ability to serve time to machines that are not always connected. Since it is now the default NTP provider for EL7 I use it again, and it still works fine for my needs. Fred -- Fred Smith -- fre...@fcshome.stoneham.ma.us - The Lord is like a strong tower. Those who do what is right can run to him for safety. --- Proverbs 18:10 (niv) - ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Question about ntp
Le 27/05/2019 à 06:32, Ralf Prengel a écrit : > > what is the standard way to sync time under Centos 7. > ntp or chrony. > > Thanks for a short hint. Chrony is the standard way, but one of the first things I do when installing a CentOS server is replace it with NTP. Here's a short blog article (in french) about NTP on CentOS. * https://www.microlinux.fr/centos-7-ntp/ Cheers, Niki -- Microlinux - Solutions informatiques durables 7, place de l'église - 30730 Montpezat Site : https://www.microlinux.fr Mail : i...@microlinux.fr Tél. : 04 66 63 10 32 Mob. : 06 51 80 12 12 ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Question about ntp
> > what is the standard way to sync time under Centos 7. > ntp or chrony. > chrony syncs to an NTP server, in the same way that ntp syncs to an NTP server. The both work. I have both ntpd (under CentOS 6) and chronyd (under CentOS 7) NTP servers on my network, they all work fine together. P. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Question about ntp
On May 27, 2019, at 07:51, Jonathan Billings wrote: > > ntp is provides but not default. *Sigh* I mean “provided”. It’s too early. -- Jonathan Billings ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Question about ntp
On May 27, 2019, at 00:32, Ralf Prengel wrote: > > > what is the standard way to sync time under Centos 7. > ntp or chrony. chrony is the default time sync daemon on C7. ntp is provides but not default. -- Jonathan Billings ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Older versions of samba that work with CentOS 7?
Hi Jobst, you can use latest samba package from CentOS 7 - there is no problem with NT style domains support (ie. it supports NT style domains). We use servers with CentOS 6 and CentOS 7 both with NT style domains. Mirek Dne 27.5.2019 v 2:57 Jobst Schmalenbach napsal(a): Hi. Are there any places I can download older versions of Samba working with CentOS 7? Reason: I have been upgrading all of my servers from 6.X to 7.X. This alone is a massive task for me as I am a one man band. Samba made massive changes not allowing NT style domains anymore in the 4.10 branch. If I can find older samba RPM's for CentOS 7 than I can finish all upgrades of the OS, then later upgrade samba once I am finished when I have more time. Any ideas anyone? thanks Jobst -- Jobst Schmalenbach The future isn't what it used to be (it never was). ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
