[CentOS] Upgraded to 7.10 from 6...

[Leroy Tennison]

This is a wild "shot in the dark" but you didn't happen to install an nvidia 
driver, did you?  Have regretted that from the day I "upgraded' to it from a 
generic driver.


From: CentOS  on behalf of mark 
Sent: Thursday, April 2, 2020 5:19 PM
To: CentOS mailing list 
Subject: [EXTERNAL] [CentOS] Upgraded to 7.10 from 6...

Let me start out by making clear I *LOATHE* gnome, ok? So I don't want
to hear about it.

What's happening is this: I did this:
yum groupinstall "Development and Creative Workstation"
yum groupinstall "KDE Plasma Workspaces"

Now, when I go in graphical mode, I try to change to kde on login. Nope
- minutes later, I can see a cursor, and a gray screen. Ditto on the
"safe mode", and ditto on "gnome classic".

What have I missed?

mark
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Harriscomputer

Leroy Tennison
Network Information/Cyber Security Specialist
E: le...@datavoiceint.com


[cid:Data-Voice-International-LOGO_aa3d1c6e-5cfb-451f-ba2c-af8059e69609.PNG]


2220 Bush Dr
McKinney, Texas
75070
www.datavoiceint.com


This message has been sent on behalf of a company that is part of the Harris 
Operating Group of Constellation Software Inc.

If you prefer not to be contacted by Harris Operating Group please notify 
us.



This message is intended exclusively for the individual or entity to which it 
is addressed. This communication may contain information that is proprietary, 
privileged or confidential or otherwise legally exempt from disclosure. If you 
are not the named addressee, you are not authorized to read, print, retain, 
copy or disseminate this message or any part of it. If you have received this 
message in error, please notify the sender immediately by e-mail and delete all 
copies of the message.




___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

[CentOS] Upgraded to 7.10 from 6...

[mark]

Let me start out by making clear I *LOATHE* gnome, ok? So I don't want 
to hear about it.


What's happening is this: I did this:
yum groupinstall "Development and Creative Workstation"
yum groupinstall "KDE Plasma Workspaces"

Now, when I go in graphical mode, I try to change to kde on login. Nope 
- minutes later, I can see a cursor, and a gray screen. Ditto on the 
"safe mode", and ditto on "gnome classic".


What have I missed?

mark
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

[CentOS] Windows 10 as guest on Centos 8

[Georgios]

Hi there!
Im trying to install windows 10 as a guest on Centos 8.1
I tried with cockpit and with boxes and both times my computer freezes
during installation.

Any ideas?

Thanks in advance!

___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] CentOS 7 host with guests as bridge cannot access host

[Alexander Dalloz]

Am 02.04.2020 um 16:10 schrieb Jerry Geis:

This is unfortunate.
https://wiki.libvirt.org/page/TroubleshootMacvtapHostFail

To the "normal" user - BRIDGE means guest is on the same network and has
access to the host.

Bummer.

Jerry


You were not telling us that you were using Macvtap.

Alexander



___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] C8 and backup solution

[Alessandro Baggi]

Yes you are right. I meant that I don't need an real agent like with bacula
that need to be configured completely

Il Gio 2 Apr 2020, 19:52 Jonathan Billings  ha scritto:

> On Thu, Apr 02, 2020 at 05:32:35PM +0200, Alessandro Baggi wrote:
> > scripted rsync. Simple, through ssh protocol and private key. No agent
> > required on target.
>
> Just a point of clarification -- you need an rsync binary on both
> sides of the ssh session, so 'rsync' would be the agent needed on the
> target.
>
> --
> Jonathan Billings 
> ___
> 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

Re: [CentOS] C8 and backup solution

[Jonathan Billings]

On Thu, Apr 02, 2020 at 05:32:35PM +0200, Alessandro Baggi wrote:
> scripted rsync. Simple, through ssh protocol and private key. No agent
> required on target.

Just a point of clarification -- you need an rsync binary on both
sides of the ssh session, so 'rsync' would be the agent needed on the
target. 

-- 
Jonathan Billings 
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] firefox unable to load pkcs11 module

[Tony Schreiner]

On Thu, Apr 2, 2020 at 12:47 PM Tony Schreiner 
wrote:

> CentOS 7, In firefox -> privacy & security -> certificates -> security
> devices
> i am trying to load the pkcs11 modules, but get the error  unable to load.
>
> I am following the directions at
> https://piv.idmanagement.gov/engineering/firefox/
>
> I have installed opensc and openssl-pkcs11, which
> contains /usr/lib64/openssl/engines/pkcs11.so
> and am using that is the module
>
> Has anybody here done that, and can offer advice?
>

Answering myself, though not completely solved.

I should have instead been loading /usr/lib64/opensc-pksc11.so
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

[CentOS] firefox unable to load pkcs11 module

[Tony Schreiner]

CentOS 7, In firefox -> privacy & security -> certificates -> security
devices
i am trying to load the pkcs11 modules, but get the error  unable to load.

I am following the directions at
https://piv.idmanagement.gov/engineering/firefox/

I have installed opensc and openssl-pkcs11, which
contains /usr/lib64/openssl/engines/pkcs11.so
and am using that is the module

Has anybody here done that, and can offer advice?

Tony Schreiner
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] C8 and backup solution

[Alessandro Baggi]

Il 02/04/20 17:49, Nicolas Kovacs ha scritto:

Le 02/04/2020 à 17:32, Alessandro Baggi a écrit :

I have not so much experiences on backups and choosing the bad tool could be
dangerous so I need some suggestion.

What backup solution do you suggest for my scenario?

I'm using Rsnapshot on all my CentOS 7 servers. It's a very elegant solution
that follows the KISS principle.

I've written a little blog article about it. It's in French, but the Unix bits
are universal. :o)

https://blog.microlinux.fr/rsnapshot-centos-7/

It's basically scripted rsync with ssh on steroids. Been using it for the last
five years or so. It just works.

Cheers,

Niki


Hi Niki,
thank you for your answer.

I remember you when I used Slackware and I think your KISS is inherited 
by there but sometimes more complex things are needed. Rsnapshot is a 
great tool but I need catalog, jobs info, pre/post job script on remote 
target, mailing, compression and possibly store data off-site (no on a 
public cloud).



___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] C8 and backup solution

[Nicolas Kovacs]

Le 02/04/2020 à 17:32, Alessandro Baggi a écrit :
> I have not so much experiences on backups and choosing the bad tool could be
> dangerous so I need some suggestion.
> 
> What backup solution do you suggest for my scenario?

I'm using Rsnapshot on all my CentOS 7 servers. It's a very elegant solution
that follows the KISS principle.

I've written a little blog article about it. It's in French, but the Unix bits
are universal. :o)

https://blog.microlinux.fr/rsnapshot-centos-7/

It's basically scripted rsync with ssh on steroids. Been using it for the last
five years or so. It just works.

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

[CentOS] C8 and backup solution

[Alessandro Baggi]

Hi list,

I'm searching a valid backup system to perform backups of 3 server, one 
local and 2 remote, and 2 linux workstation. (this number could be 
higher in future). Currently I'm testing bacula, scripted rsync with 
hardlink and borgbackup on C8.1.


Bacula works without any problem, well tested, solid but complex to 
configure. Tested on a single server (with volumes on disk) and  a full 
backup of 810gb (~15 files) took 6,30 hours (too much). I would run 
deduplication but 1. bacula on C8 is not compiled with aligned 2. bacula 
put attention on some possibile bad scenario where deduplication could 
be a problem in losing one block that could break many files with the 
same shared block. So deduplication is secure or I should be away from it?


scripted rsync. Simple, through ssh protocol and private key. No agent 
required on target. I use file level deduplication using hardlinks. To 
perform compression and block deduplication I could use fs like zfs (not 
available from epel) or use something like stratis (I don't checked if 
it offer deduplication in this moment). Encryption could be performed on 
fs level. Using a scripted rsync is the simpler way but there is 
something that could be leaved out by me (or undiscovered error). Simple 
to restore.


BorgBackup is another solution similar to rsync in some way. It works 
like rsync through ssh but while rsync simply sends data, borg run 
deduplication, compression and encryption on place. Why is similar 
rsync? Because I need another script to run borg. It is not a complete 
solution and it works on push method and not pull like with bacula or 
rsync. If I would manage all my server from a central backup server is a 
problem, so to accomplish this I should run the borg command from the 
central server on the target server that point back to the remote 
repository (located on the central server). There is another solution 
with borg: using sshfs but is 4 time slower (too much solwer).


I have not so much experiences on backups and choosing the bad tool 
could be dangerous so I need some suggestion.


What backup solution do you suggest for my scenario?

Thank you in advance.

Alessandro.

___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] CentOS 7 host with guests as bridge cannot access host

[Leroy Tennison]

Wow, thanks for sharing, I'd have never dreamed it.


From: CentOS  on behalf of Jerry Geis 

Sent: Thursday, April 2, 2020 9:10 AM
To: CentOS mailing list 
Subject: [EXTERNAL] Re: [CentOS] CentOS 7 host with guests as bridge cannot 
access host

This is unfortunate.
https://linkprotect.cudasvc.com/url?a=https%3a%2f%2fwiki.libvirt.org%2fpage%2fTroubleshootMacvtapHostFail=E,1,TqNsTVxQVBTpipmCCuG5tI25iPoaz-LZB2sqYNi5OPBkkLYh9oOrxZdYsgqiCUIn6E_5RLCpGmJg5-foVY9bCiyOSimZm0h1aZkDi0-3aBtGpaxlsoryjw,,=1

To the "normal" user - BRIDGE means guest is on the same network and has
access to the host.

Bummer.

Jerry
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Harriscomputer

Leroy Tennison
Network Information/Cyber Security Specialist
E: le...@datavoiceint.com


[cid:Data-Voice-International-LOGO_aa3d1c6e-5cfb-451f-ba2c-af8059e69609.PNG]


2220 Bush Dr
McKinney, Texas
75070
www.datavoiceint.com


This message has been sent on behalf of a company that is part of the Harris 
Operating Group of Constellation Software Inc.

If you prefer not to be contacted by Harris Operating Group please notify 
us.



This message is intended exclusively for the individual or entity to which it 
is addressed. This communication may contain information that is proprietary, 
privileged or confidential or otherwise legally exempt from disclosure. If you 
are not the named addressee, you are not authorized to read, print, retain, 
copy or disseminate this message or any part of it. If you have received this 
message in error, please notify the sender immediately by e-mail and delete all 
copies of the message.




___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] Versions in RHEL and CentOS

[Thomas Stephen Lee]

On Thu, Apr 2, 2020 at 3:35 PM Peter Kjellström  wrote:

> On Thu, 2 Apr 2020 14:40:31 +0530
> Thomas Stephen Lee  wrote:
> > > On Thu, Apr 2, 2020 at 2:07 PM Peter Kjellström 
> > > wrote:
> >
> > > I had no idea people still used that package. Especially on a
> > > server.
> >
> > Is it due to some security issue ?
>
> Not security but safety (and also, it's not needed when there are
> supported ways to get that data and better).
>
> By safety I refer the half-blind scanning of smbus etc. that
> sensors-detect does.
>
> To me it feels like a relic from desktops 15 years ago :-)
>
> /Peter K
>

Hi Peter,

Ok.

I will look for alternatives.

Thanks for the information.

thanks.

---
Lee
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] CentOS 7 host with guests as bridge cannot access host

[Jerry Geis]

This is unfortunate.
https://wiki.libvirt.org/page/TroubleshootMacvtapHostFail

To the "normal" user - BRIDGE means guest is on the same network and has
access to the host.

Bummer.

Jerry
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] Cloud Image building (like CentOS is doing it)

[Gianluca Cecchi]

On Thu, Apr 2, 2020 at 12:20 PM Nicolas Ghirlanda <
nicolas.ghirla...@everyware.ch> wrote:

> Hello,
>
> I was not able to find information about how CentOS is building its
> Cloud Images.
>
>
> I know packer etc are able to do it, but I am interested in how CentOS
> is building its own images as we like to adapt that for our Openstack
> Cloud.
>
>
> thanks for any hints
>

Hi,
not the direct answer to your question, but as you wrote about welcome
hints...

couldn't it be simpler to take one of the images officially provided by the
CentOS project and then use one of:

1) diskimage-builder
https://docs.openstack.org/diskimage-builder/latest/

2) guestfish / guestmount
https://docs.openstack.org/image-guide/modify-images.html

3) virt-customize
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/virtualization_deployment_and_administration_guide/sect-guest_virtual_machine_disk_access_with_offline_tools-using_virt_customize

Or do you have any particular needs?
Gianluca
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

[CentOS] Cloud Image building (like CentOS is doing it)

[Nicolas Ghirlanda]

Hello,

I was not able to find information about how CentOS is building its 
Cloud Images.



I know packer etc are able to do it, but I am interested in how CentOS 
is building its own images as we like to adapt that for our Openstack Cloud.



thanks for any hints


Nicolas
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] Versions in RHEL and CentOS

[Peter Kjellström]

On Thu, 2 Apr 2020 14:40:31 +0530
Thomas Stephen Lee  wrote:
> > On Thu, Apr 2, 2020 at 2:07 PM Peter Kjellström 
> > wrote:  
> 
> > I had no idea people still used that package. Especially on a
> > server.  
> 
> Is it due to some security issue ?

Not security but safety (and also, it's not needed when there are
supported ways to get that data and better).

By safety I refer the half-blind scanning of smbus etc. that
sensors-detect does.

To me it feels like a relic from desktops 15 years ago :-)

/Peter K
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] Versions in RHEL and CentOS

[Thomas Stephen Lee]

On Thu, Apr 2, 2020 at 2:07 PM Peter Kjellström  wrote:

> On Thu, 2 Apr 2020 11:10:23 +0530
> Thomas Stephen Lee  wrote:
> ...
> > /usr/bin/sensors
> >
> > from the lm_sensors package
> >
> > I had run
> >
> > sensors-detect --auto
>
> I had no idea people still used that package. Especially on a server.
>
> Per core temperatures in linux for Zen2 is done using (a very up to
> date kernel with its k10temp module). Alternatively one can look at:
>
>  https://github.com/ocerman/zenpower.git
>
> I don't know if it works with the c8 kernel (but it does not work with
> the c7 one).
>
> But in the end. Why care about per core temperatures? Setup basic
> monitoring of the server using ipmi or whatever the vendor supports.
>
> /Peter K
>

Hi Peter,

> On Thu, Apr 2, 2020 at 2:07 PM Peter Kjellström  wrote:

> I had no idea people still used that package. Especially on a server.

Is it due to some security issue ?

We install on all our machines (servers/desktops).

thanks.

---
Lee
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] Versions in RHEL and CentOS

[Peter Kjellström]

On Thu, 2 Apr 2020 11:10:23 +0530
Thomas Stephen Lee  wrote:
...
> /usr/bin/sensors
> 
> from the lm_sensors package
> 
> I had run
> 
> sensors-detect --auto

I had no idea people still used that package. Especially on a server.

Per core temperatures in linux for Zen2 is done using (a very up to
date kernel with its k10temp module). Alternatively one can look at:

 https://github.com/ocerman/zenpower.git

I don't know if it works with the c8 kernel (but it does not work with
the c7 one).

But in the end. Why care about per core temperatures? Setup basic
monitoring of the server using ipmi or whatever the vendor supports.

/Peter K
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] Versions in RHEL and CentOS

[Thomas Stephen Lee]

On Thu, Apr 2, 2020 at 11:16 AM R C  wrote:

> why not use dmidecode ipmi,  things like that?
>
> On 4/1/20 11:40 PM, Thomas Stephen Lee wrote:
> > On Wed, Apr 1, 2020 at 12:33 PM Peter Kjellström  wrote:
> >
> >> On Wed, 1 Apr 2020 10:01:04 +0530
> >> Thomas Stephen Lee  wrote:
> >> ...
> >>> Thanks for the information .
> >>> Rented a new EPYC Rome Server from Hetzner, but sensors does not show
> >>> status of all cores in list, which is why I asked.
> >> Curious what "sensors" you are referring to..
> >>
> >> Like this:
> >>
> >> $ cat /sys/devices/system/cpu/online
> >> 0-63
> >>
> >> or this:
> >>
> >> $ lscpu | grep CPU\(s\)
> >> CPU(s):64
> >> On-line CPU(s) list:   0-63
> >> NUMA node0 CPU(s): 0-15,32-47
> >> NUMA node1 CPU(s): 16-31,48-63
> >>
> >> or what?
> >>
> >> /Peter K
> >>
> > Hi Peter,
> >
> > /usr/bin/sensors
> >
> > from the lm_sensors package
> >
> > I had run
> >
> > sensors-detect --auto
> >
> > before running sensors
> >
> > thanks.
> >
> > ---
> > Lee
> > ___
> > 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
>

sensors

gives the temperature of each core if the CPU is supported.
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] centos 6 vs 7

[Mark Milhollan]

On Tue, 31 Mar 2020, Divine Tanyingoh wrote:


On centos 6 I cannot ping the hostname and get a
reply without first resolving in the /etc/hosts file by adding a new entry:
192.168.0.47  server1.example.com.

But for centos 7 I am able to ping the hostname and get a reply even when I
have not made any changes to the /etc/hosts file. Why is there this
difference between centos 6 vs 7.


Sounds like mDNS/Avahi is not being used/referenced on/by 6.


/mark
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos