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CentOS 7 host with guests as bridge cannot access host
by Jerry Geis 03 Apr '20

03 Apr '20

I have CentOS 7 host. Two guests on bridge network setup by GUI and virt-manager. 1 CentOS 8 guest 1 Win 10 guest Both cannot access the host. They can other machines on the network. Guests can access the internet just not the host. I used virt-manager GUi to set up everything. Selected the eth0:macvtap and Bridge. I "desire" bridge network. If I select something else I get access to host - but of course machine is not on the main network. Thoughts ? Jerry

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Re: [CentOS] Versions in RHEL and CentOS
by Peter Kjellström 02 Apr '20

02 Apr '20

On Thu, 2 Apr 2020 11:10:23 +0530 Thomas Stephen Lee <lee.iitb(a)gmail.com> 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

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Cloud Image building (like CentOS is doing it)
by Nicolas Ghirlanda 02 Apr '20

02 Apr '20

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

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centos 6 vs 7
by Divine Tanyingoh 02 Apr '20

02 Apr '20

Issue: After installing vms on vmware, I noticed a difference in behavior between centos 6 vs 7. 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. Thank you for your assistance.

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Qemu guest(s) in bridge mode cannot see host machine.
by Jerry Geis 31 Mar '20

31 Mar '20

Hi All - I have a Win10 and Centos 8 guest both that bridge mode does not see the host- other computers seem ok. They cannot even ping the host. My host is CentOS 7. I did some searching - I see the issue - but not what was done to resolve it ? Thanks, Jerry

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mlocate-updatedb.timer not working?
by Frank Cox 31 Mar '20

31 Mar '20

I set this computer up with Centos 8 a few days ago. "systemctl status mlocate-updatedb.timer" says "Active (waiting)". But the mlocate database hasn't been updated since the last time I ran updatedb manually. # ls -l /var/lib/mlocate/* -rw-r-----. 1 root slocate 22944208 Feb 29 10:30 /var/lib/mlocate/mlocate.db What have I missed? -- MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com

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Problem installing bind-dyndb-ldap
by Michal Zacek 31 Mar '20

31 Mar '20

Hello, is there a way, how to avoid this stupid "module" problem? Google didn't help, except it is quite common at Centos 8.1. [root@centos8 ~]# dnf install bind-dyndb-ldap ..... Running transaction check No available modular metadata for modular package 'bind-dyndb-ldap-11.1-14.module_el8.1.0+253+3b90c921.x86_64', it cannot be installed on the system [root@centos8 ~]# cat /etc/redhat-release CentOS Linux release 8.1.1911 (Core) Thanks, MZa

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Versions in RHEL and CentOS
by Thomas Stephen Lee 31 Mar '20

31 Mar '20

Hi, I had a doubt regarding RHEL/CentOS Versions. https://access.redhat.com/support/policy/amd in the he Notes No (8) says "Update 2 of Red Hat Enterprise Linux 8" does it mean it will appear in CentOS 8.2, or is already there from 8.0 ? thanks -- Lee

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CentOS 8 Gstreamer and Mplayer
by Mark LaPierre 31 Mar '20

31 Mar '20

Hey Y'all, What replaced Gstreamer and Mplayer in CentOS 8. RPM finder finds both for CentOS 6 and 7 but not 8. There must be a replacement for them but I don't know what. I appear to be having codec issues but, not knowing what's supposed to handle the jobs that the two programs used to do, I don't know where to look for a commercial set of codecs compatible with the application. I'm getting error messages, "No video with supported format and MIME type found." when visiting certain web sites with Firefox. I would try it with Chrome but that does not appear to be available in the CentOS 8 repos either. I found solutions to this issue on the net that involved turning off HTML5 direct rendering and using Flash, but that's not going to happen. -- _ °v° /(_)\ ^ ^ Mark LaPierre Registered Linux user No #267004 https://linuxcounter.net/ ****

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Re: [CentOS] CentOS 8 Gstreamer and Mplayer
by Mark LaPierre 31 Mar '20

31 Mar '20

On 2020-03-30 00:13, Ted Miller wrote: > I have generally found that installing VLC takes care of my codec needs. > Have not tried it on Centos8 yet. > Ted Miller > > > On 3/29/20 11:18 PM, Mark LaPierre wrote: >> On 2020-03-29 18:42, Frank Cox wrote: >>> On Sun, 29 Mar 2020 18:34:20 -0400 >>> Mark LaPierre wrote: >>> >>>> What replaced Gstreamer and Mplayer in CentOS 8. RPM finder finds both >>>> for CentOS 6 and 7 but not 8. There must be a replacement for them but >>>> I don't know what. >>> >>> rpmfusion might be what you're looking for. >>> >> >> I'm assuming that rpmfusion is a repository that I have to set up on >> my new squeaky clean freshly installed machine and then proceed to >> pollute it with questionable packages. ;-) >> >> I'll look into that tomorrow. >> >> What I would really like to know is, were these applications replaced >> with something else that I should be using instead? >> >> Thank you for responding. I really do appreciate it. >> > > The box says, "No match for argument: vlc Error: Unable to find a match: vlc" Perhaps there's another repo like epel for CentOS 8 where these toys live? -- _ °v° /(_)\ ^ ^ Mark LaPierre Registered Linux user No #267004 https://linuxcounter.net/ ****

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