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34748 discussions

Differences between CentOS 7.x and CentOS 8.x OS
by Kaushal Shriyan 05 Oct '19

05 Oct '19

Hi, I will appreciate it if someone can help me understand the differences between CentOS 7.x and CentOS 8.x OS. I look forward to hearing from you and thanks in advance. Best Regards, Kaushal

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Alternate gstreamer1 for CentOS 8
by Jerry Geis 05 Oct '19

05 Oct '19

Hi All - is there an alternate gstreamer1 for CentOS 8 ? Two reasons why I need it. 1) OpenH264 support 2) VAAPI support Both don;t seem present. Thanks Jerry

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USB ISO for CentOS 8
by Jerry Geis 05 Oct '19

05 Oct '19

I did the dd of the ISO to a 16G USB device. the second partition is FAT so I can edit it - I want to make a custom menu entry. I edited the grub.cfg - but that did not work - my menu option does not show. Then I think I need to change BOOT.cfg and generate the grub.cfg - but I dont know in this case how to generate for the USB device. What command do I use for that ? Thanks, Jerry

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kpatch (live kernel patching) in CentOS 7.7?
by Phelps, Matthew 04 Oct '19

04 Oct '19

Forgive me if this has been answered before and I've missed it. This https://access.redhat.com/solutions/2206511 says live kernel patches will be available via yum updates as of RHEL 7.7. Is this carried over to CentOS 7.7.1908? -- *Matt Phelps* *Information Technology Specialist, Systems Administrator* (Computation Facility, Smithsonian Astrophysical Observatory) Center for Astrophysics | Harvard & Smithsonian 60 Garden Street | MS 39 | Cambridge, MA 02138 email: mphelps(a)cfa.harvard.edu cfa.harvard.edu | Facebook <http://cfa.harvard.edu/facebook> | Twitter <http://cfa.harvard.edu/twitter> | YouTube <http://cfa.harvard.edu/youtube> | Newsletter <http://cfa.harvard.edu/newsletter>

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CentOS8 and crypto-policies
by Todor Petkov 04 Oct '19

04 Oct '19

Hi, I started playing with CentOS8 and I am trying to set default crypto policies for openssh server/client. In CentOS7 I followed the guide from https://infosec.mozilla.org/guidelines/openssh.html and set KexAlgorithms /Ciphers/MACs in sshd_config. In CentOS8 I can edit /usr/share/crypto-policies/$POLICY/opensshserver.txt for the sshd arguments, but editing openssh.txt or even changing default crypto policy to FIPS seems to not affect the client options (ssh -Q mac) Is the client supposed to be affected by these policies or they are only for the server? Regards,

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Re: [CentOS] CentOS 8 network-scripts
by Mike Litoris 04 Oct '19

04 Oct '19

On 10/4/19 12:27 PM, Jim Perrin wrote:> Why? I'd like to understand more about the use case where this is a requirement.I'd say for the sake of simplicity...Why complicate things with NM when you only need to set an IP ?The ifconfig files were great.Why is the choice, to use or not to use NM, not left the en end user ?That is the question...

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Compiling latest postfix fails on C8
by Adrian van Bloois 04 Oct '19

04 Oct '19

Hi, I tried to compile the latest version of postfix, runs fine on C6 and C7, on C8 it fails. Complaining about missing ypclnt.h, this should com from glibc-headers. Any suggestions? Adrian -- Adri P. van Bloois "Elegance is not a dispensable luxury but a factor that decides between success and failure." Edsger W. Dijkstra

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CentOS-8 QEMU guest won't bring virtio_net interface up.
by LAHAYE Olivier 04 Oct '19

04 Oct '19

Hi, I’m trying to PXE boot from qemu a CentOS-8 initrd, but despite I set rd.neednet=1, the virtio_net module is not loaded and the interface is not brought up. If I modprobe it by hand, it brings an eth0 interface. My initrd was created using dracut that includes network, qemu and qemu-net modules Qemu is started with EFI bios and vritio ethernet emulation Questions are: * Is it a known bug/ issue? * What Am I missing? * Lspci does see the Red Hat, Inc. Virtio network device, but nothing triggers the module load (virtio_net) * After doing modprobe virtio_net, the interface is named eth0 (it seems that it doesn’t follow the modern network device naming scheme) Before reporting a bug, I want to make sure that I’m not missing something. Regards, Olivier. -- Olivier LAHAYE

1 0

Keyboard backlight fails with recent kernels
by Rob Kampen 04 Oct '19

04 Oct '19

I do not use my laptop often, normally my better half has possession and use of it. It is a late 2011 ASUS ROG G73S which performs very well. The keyboard backlight was an issue initially under CentOS6, but the kind folks at elrepo found the missing bits in a more recent kernel and created a package to add them to the older CentOS6 kernel. An upgrade to CentOS7 went without a hitch and the keyboard lighting has worked fine. Recently I sat infront of the machine and couldn't see the keys - no backlight. A number of reboots later I have found that the latest kernel that I have on the machine, that works okay is 3.10.0-862.14.4.el7.x86_64 3.10.0-957.21.2.el7 and 3.10.0-957.27.2.el7 both fail to load/activate the driver for the keyboard. Would someone with the requisite knowledge please advise what I need to do. Is this a case for using the CentOSplus kernel or do I need to find and load a driver or two? or do I need to request the elrepo folk to make a suitable package. Thanks Rob

2 1

CentOS 8 as guest
by Jerry Geis 04 Oct '19

04 Oct '19

Hi all , I am running C7, and C8 as guest at this time. I noticed that when right click on desktop, and select display on C8 - that the largest resolution I get is 1080p, I am running a 4K monitor - is there a way to get higher resolution in the Guest. I am running with qemu 2.0.0 Thanks, Jerry

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