Re: [CentOS] something is hammering non-existant floppy

[Jon Pruente]

On Mon, Dec 13, 2021 at 12:05 AM Jon LaBadie  wrote:

> On my two Fedora systems I get "autofs.service not found".
> Perhaps it is masked there.
>

Are they the same hardware or vms running on the same hypervisor? Where/how
is the trouble system running? I've seen odd floppy access errors pop up on
VMs running on old ESXi systems, and also on systems with
BMC/IPMI/ILO/iDRAC remote consoles that provide means to have remote
drives.
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Re: [CentOS] Upgrading CentOS from 7 to 8

[Jon Pruente]

On Wed, Sep 29, 2021 at 10:51 AM José María Terry Jiménez 
wrote:

> El 29/9/21 a las 15:24, Gestió Servidors escribió:
> Me!, some worked, Others no. It's easier in machines without a GUI, but
> failed without it also. A few got "upgraded". Unable to say why ones
> worked and others no.
>

That's the base problem. There is no reliable way to know which systems and
installed software will work through an upgrade. So, you can do all the
work of attempting an upgrade that will likely fail and still have to end
up doing a fresh install and migration anyway. Might as well have saved all
the time and effort and just started with the migration in the first place.
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Re: [CentOS] Upgrading (?) from legacy boot to UEFI

[Jon Pruente]

On Sat, Aug 28, 2021 at 8:47 AM Valeri Galtsev 
wrote:

> On August 28, 2021 8:07:30 AM CDT, Jonathan Billings 
> wrote:
> >On Aug 28, 2021, at 05:58, Rob Kampen  wrote:
> >>
> >> As to the RH decision to default to a legacy boot / MBR oriented
> install based upon size of disk ... words fail me.
> >
> >I don’t think that it chooses legacy boot based on the size of disk, but
> based on how you booted the installer.  If you booted from the installer as
> a legacy boot item, it installs as a legacy bootloader, but if you disable
> the BIOS option to use a legacy bootloader, it will boot the installer as a
> UEFI boot and choose to install a UEFI grub2 setup.
> >
>
> +1
>
> And the same seems to be true about other UNIX like systems, at least
> Debian and clones, FreeBSD and clones.
>

This has been my experience as well. If the installer is booted in legacy
mode then it will install as it needs to for a BIOS system. If it is booted
in UEFI mode then it will install as needed for a UEFI boot. Trying to boot
in legacy mode and install for UEFI boot is fraught with a lot of manual
complications. IMO it's not any more complicated than understanding the
limits of legacy BIOS booting and all the workarounds that have been
stacked up over the decades to keep it working.
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Re: [CentOS] VzLinux - Opinions? Thoughs, Comments? - no microsoft involvement/contamination

[Jon Pruente]

On Wed, Jul 28, 2021 at 7:56 AM mario juliano grande-balletta <
mario.balle...@gmail.com> wrote:

> Anyone using or working with VzLinux, seems to be an upstream distro of
> CentOS/RHEL and no vendors involved
> Would love to hear experiences.
> thanks!
> :-)
>

No vendors? It's the product of a single vendor, the long running Linux
hypervisor platform creator Virtuozzo. They made it to run on their OpenVZ
hypervisor platform.

https://www.virtuozzo.com/product-updates/virtuozzo-vzlinux-8-4-now-available/
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Re: [CentOS] Centos versions in the future?

[Jon Pruente]

On Fri, Jul 9, 2021 at 5:14 AM Gionatan Danti  wrote:

> While I fully understand & agree on the motivation for keeping Rocky
> (and other clones) 1:1 with Red Hat, it should be understood that
> current RHEL packages selection itself is drifting away from
> small/medium business needs. So the core issue is a more fundamental
> one: Red Hat, our upstream, is walking away from traditional server
> needs.
>
> So while I wish Rocky all the best (and I am actively using it!), I am
> looking toward Ubuntu and Debian for new deployments.
> Regards.
>

Any extensions beyond rebuilding TUV provided code are why CentOS, and now
Rocky, have SIGs. There is an appropriate place for these requests, but it
is not in the main project.

https://git.rockylinux.org/sig
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Re: [CentOS] Centos versions in the future?

[Jon Pruente]

On Thu, Jul 8, 2021 at 3:32 PM mario juliano grande-balletta <
mario.balle...@gmail.com> wrote:

> The motivations behind Rocky Linux are noble indeed, altruistic and
> back to community.
> But, accepting support from Amazon, Google, and especially Microsoft
> tastes like vomit in my mouth.  Nothing in the world I despise and
> disrespect more than anything related to Microsoft.
> Get better sponsors, get community funding!
>

They are the 3 largest cloud services there are. That's what the support is
for. They are working with the platforms that will be running their OS on
potentially millions of instances. Welcome to the 21st century of computing.
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Re: [CentOS] Centos versions in the future?

[Jon Pruente]

On Wed, Jul 7, 2021 at 11:04 AM Jon Pruente 
wrote:

> Deleted tweet link:
> https://twitter.com/NavyLinux/status/1408429562472677381
>

For completeness, here's a WayBackMachine link to the deleted tweet.
Luckily it got archived.

https://web.archive.org/web/20210625141924/https://twitter.com/NavyLinux/status/1408429562472677381

> @NavyLinux
> Truthfully, last production release from RHEL /CentOS 7.8.  stay on
CentOS 7 not need to move forward to new unstable vendors, wait and watch
Upcoming changes.  already on CentOS 8 wait until a stable reslease ready
for upgrad.@GuyLinux @CentOSannounce #Linux
> 7:19 AM - 25 Jun 2021
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Re: [CentOS] Centos versions in the future?

[Jon Pruente]

On Wed, Jul 7, 2021 at 11:14 AM Simon Matter  wrote:

> > BTW, anyone know who the "Navy Foundation" are?  Is this an arm of the
> > US government?
> >
> > Martin
>
> See https://navylinux.org/news/legal/


That furthers what I wrote earlier. That says:
 > Date of formation: June 14, 2021

Yet the about page ( https://navylinux.org/about/ ) was changed to say:
> Navy Linux and The Navy Linux Project is an on-going community project
founded by Navy Foundation on January 4, 2021.

They don't have a straight story, and they've been changing it
inconsistently. That's not how you build trust.
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Re: [CentOS] Centos versions in the future?

[Jon Pruente]

On Wed, Jul 7, 2021 at 7:41 AM Leon Fauster via CentOS 
wrote:

> Here is another one:
>
> https://navylinux.org/


Navy Linux has a bad taste already, for me. They are aiming too big, even
trying to replicate EPEL for themselves. And their attitude isn't good.
They had a tweet disparaging "new unstable vendors" of EL distros that they
only deleted after being called out for it, despite being one of those
themselves.

Deleted tweet link:
https://twitter.com/NavyLinux/status/1408429562472677381

They used to say they were founded by "Unixlab". Which Unixlab? We don't
know. Now they say they are a non-profit Foundation that founded the
project.
https://webcache.googleusercontent.com/search?q=cache:kZLBFcdLyrYJ:https://navylinux.org/about/+=1=en=clnk=us
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Re: [CentOS] BTRFS to ext4

[Jon Pruente]

On Sat, Jul 3, 2021 at 5:48 AM Gionatan Danti  wrote:

> Both options seems reasonable to me.
> If choosing to use the same machine, I would not expand the existing
> disk; rather I suggest adding a *new* disk to VM (formatting it with
> EXT4).
>

IMO, creating a new disk also leaves you the safety of not modifying the
originals so that you can fail back over if something doesn't go well. Of
course take backups as well, but being able to simply switch between drive
images will make for quicker troubleshooting.
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Re: [CentOS] getssl was working stopped

[Jon Pruente]

On Fri, May 14, 2021 at 10:52 AM Jerry Geis  wrote:

> Hi All  - I am using getssl on CentOS 7.
> It have been working fine since  Feb 17th and just stopped.
>

Are you using a recent version of getssl? Newer releases support ACMEv2 ,
and there is a planned brownout of ACMEv1 service in effect right now. You
shouldbe migrating everything to ACMEv2 support only right now.

https://community.letsencrypt.org/t/end-of-life-plan-for-acmev1/88430/16
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Re: [CentOS] will there be centos 8.4?

[Jon Pruente]

On Mon, May 10, 2021 at 11:47 AM Fabian Arrotin  wrote:

> Talking about that : what's the official position on how CentOS 8 will
> go EOL ?
> I'd be myself in favor of transparently redirecting CentOS 8 linux
> yum/dnf mirrorlists to 8-stream end of the year, so that people would
> still get automatically updates and would be able to "dnf install "
>
> I'd prefer that over a "mirrorlist.centos.org answering  release combination>" and so breaking existing installs.
>

There is already a process that was recently used for CentOS 6, which is to
have people use the repos at vault.centos.org if they need them. Changing
them to Stream could break things in very unexpected ways, which would be
worse than simply having them no longer provide updates. IMO it's better to
not respond and create an error to be investigated and fixed by moving to
the vault repo if desired, or a different 3rd party repo provider. At that
point it is clearly an issue with the repo. Random problems cropping up
with broken packages will be much harder to trace back and will cause all
sorts of people seeking help to fix their then broken CentOS 8 systems to
come out of the woodwork.
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Re: [CentOS] How do I download RHEL 8.3 with free license and free subscription for my production servers?

[Jon Pruente]

FTA:
>
> As of February 1, 2021, Red Hat will make RHEL available at no cost for
> small-production workloads—with "small" defined as 16 systems or fewer.


It's not available yet.

On Thu, Jan 28, 2021 at 9:09 AM Turritopsis Dohrnii Teo En Ming <
teoenming.jan2...@gmail.com> wrote:

> Subject: How do I download RHEL 8.3 with free license and free subscription
> for my production servers?
>
> Good day from Singapore,
>
> I am referring to the following news articles.
>
> Article: CentOS is gone—but RHEL is now free for up to 16 production
> servers
> Link:
>
> https://arstechnica.com/gadgets/2021/01/centos-is-gone-but-rhel-is-now-free-for-up-to-16-production-servers/
>
> Article: Red Hat’s Disruption of CentOS Unleashes Storm of Dissent
> Link:
>
> https://www.enterpriseai.news/2021/01/22/red-hats-disruption-of-centos-unleashes-storm-of-dissent/
>
> How do I download Red Hat Enterprise Linux 8.3 with free license and free
> subscription for my production servers?
>
> When I visited Red Hat's official website, I don't see any page or any
> option to download RHEL 8.3 with free license and free subscription.
>
> Please advise.
>
> Thank you very much.
>
> Mr. Turritopsis Dohrnii Teo En Ming, 42 years old as of 28 January 2021
> Thursday, is a TARGETED INDIVIDUAL living in Singapore. He is an IT
> Consultant with a System Integrator (SI)/computer firm in Singapore. He is
> an IT enthusiast.
>
>
>
>
>
> -BEGIN EMAIL SIGNATURE-
>
> The Gospel for all Targeted Individuals (TIs):
>
> [The New York Times] Microwave Weapons Are Prime Suspect in Ills of
> U.S. Embassy Workers
>
> Link:
> https://www.nytimes.com/2018/09/01/science/sonic-attack-cuba-microwave.html
>
>
> 
>
> Singaporean Targeted Individual Mr. Turritopsis Dohrnii Teo En Ming's
> Academic Qualifications as at 14 Feb 2019 and refugee seeking attempts at
> the United Nations Refugee Agency Bangkok (21 Mar 2017), in Taiwan (5 Aug
> 2019) and Australia (25 Dec 2019 to 9 Jan 2020):
>
> [1] https://tdtemcerts.wordpress.com/
>
> [2] https://tdtemcerts.blogspot.sg/
>
> [3] https://www.scribd.com/user/270125049/Teo-En-Ming
>
> -END EMAIL SIGNATURE-
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Re: [CentOS] CentOS Stream suitability as a production webserver

[Jon Pruente]

On Tue, Jan 5, 2021 at 3:32 PM Jamie Burchell 
wrote:

> I'm sure it's my lack of understanding, but there feels too much hope
> pinned on "Rocky", which seems like one person (albeit a key person) going
> it alone with the hope of a community following of disgruntled people. I
> see a single readme file in the repo. I think I'd feel more comfortable
> using Stream at this point.
>
> The uncertainty is frustrating and unsettling.
>

If you still think Rocky is one guy going it alone then you haven't been
paying any attention to it at all. The slack that it started on is so
active that messages were falling off the 10k scroll back limit in a matter
of days. It's quieted down some since they have been making use of their
forums and working on moving to Mattermost, but that sure isn't the
activity of one person.

The repo you refer to is just a holding one, with the readme in many
translations. Go up one level and you'll see the 17 repos thay have for
infrastructure and other needs. https://github.com/rocky-linux
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Re: [CentOS] What are the differences between CentOS Linux and CentOS Stream?

[Jon Pruente]

On Wed, Dec 16, 2020 at 12:11 PM Lamar Owen  wrote:

> > For example, I was messing with kubernetes in a few ways.  redhat
> > provides a license for RHEL, that you can use for that purpose for
> > free, BUT you can have only have one license.
> Yes, which makes it a bit difficult to mess around with kubernetes. That
> particular case would be covered resonably well by CentOS Stream,
> though, since the major part of kubernetes' behavior isn't going to
> change radically within a point release cycle.
>

UBI should be used with k8s, not a full OS install. It has a fully free to
use license.

https://developers.redhat.com/products/rhel/ubi
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Re: [CentOS] CentOS 8 future

[Jon Pruente]

On Tue, Dec 15, 2020 at 11:31 AM Phelps, Matthew 
wrote:

> Not to mention the constant barrage of "You just want free Red Hat" and
> "CentOS users are moochers" and "We deserve value from all those CentOS
> users, so we're going to turn them into beta testers for RHEL." I have
> gotten these responses here and on twitter from CentOS and Red Hat
> employees.
>
> So, sorry, but this line about this not being a money grab is an obvious
> crock of excrement.
>

Or the line that they "never promised 2029" and that it "was a mistake".
THey keep trying to make it out as if the lifetime of CentOS was separate
from RHEL. Yet, this interview comes out where Rich Bowen says exactly that
it is, like we all expected it to be.

> First, it's important to understand that the dates that the CentOS
project lists as EOL (End Of Life) dates are, and always have been,
dependent on Red Hat. That is, we can say that CentOS Linux 7 will be EOL
on a particular date, but if the dates around RHEL 7 shift, hypothetically
speaking, then so will those around CentOS Linux 7. That's what happened
with CentOS Linux 8. This decision was made by Red Hat and the CentOS Board.
https://en.wikinews.org/wiki/Red_Hat_to_move_focus_away_from_CentOS_in_favour_of_Stream%3B_CentOS_team_discuss_implications_with_Wikinews
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Re: [CentOS] CentOS 8 future

[Jon Pruente]

On Tue, Dec 15, 2020 at 2:48 AM R C  wrote:

> 'Rocky Linux' guy might actually be on to something (although I'd pick
> another distro name)
>

The name comes from his CentOS co-founder Rocky McGaugh, who is no longer
with us, in his memory.
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Re: [CentOS] The conclusio: CentOS is dead

[Jon Pruente]

On Mon, Dec 14, 2020 at 4:48 PM Ruslanas Gžibovskis 
wrote:

> I think most of the derivatives will be dead with one or two releases, like
> was with Debian, such as Devuan, never got a new version...
>

Devuan 3.0 was released in June.
https://www.devuan.org/os/announce/beowulf-stable-announce-060120
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Re: [CentOS] Blog article: CentOS is NOT dead

[Jon Pruente]

On Mon, Dec 14, 2020 at 8:25 AM James Pearson 
wrote:

> I agree that Redhat really screwed up this announcement - they would have
> got a lot more kudos if they had announced CentOS Stream to exist along
> with keeping the current traditional CentOS ...
>

Oh, but they did do that. Last year, when CentOS 8 was announced Stream was
announced alongside it. The screw up here was in killing off CentOS Linux
by decree from Red Hat with a bunch of spin about how we're all better off
for it.
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Re: [CentOS] CentOS 8 Stream: The Good, The Bad, The Ugly

[Jon Pruente]

On Wed, Dec 9, 2020 at 5:51 PM Joshua Kramer 
wrote:

> CentOS called "AppStream"
>

There is no version of CentOS called AppStream. AppStream is a repository
inside of 8 (
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/installing_managing_and_removing_user-space_components/using-appstream_using-appstream
). The project is called CentOS Stream. The naming collision was an
entirely avoidable circumstance, but so was this whole debacle of the past
couple of days.
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Re: [CentOS] Is Oracle a real alternative to Centos?

[Jon Pruente]

On Wed, Dec 9, 2020 at 4:26 AM Rainer Traut  wrote:

>
> > Oracle Linux FAQ (PDF):
> > https://www.oracle.com/a/ocom/docs/027617.pdf
>
> There is no subscription needed. All needed repositories for the oVirt
> based virtualization are freely available.
>
>
> https://docs.oracle.com/en/virtualization/oracle-linux-virtualization-manager/getstart/manager-install.html#manager-install-prepare


While the packages may be available, their own FAQ says it's a subscription
feature. I don't trust Oracle not to come down on users who install it and
demand subscription fees. They already do so for Java and VirtualBox
Extensions.
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Re: [CentOS] Is Oracle a real alternative to Centos?

[Jon Pruente]

On Tue, Dec 8, 2020 at 11:54 AM Frank Cox  wrote:

> Is Oracle a real alternative to Centos?  I'm asking because genuinely
> don't know; I've never paid any attention to Oracle's Linux offering before
> now.
>
> But today I've seen a couple of the folks here mention Oracle Linux and I
> see that Oracle even offers a script to convert Centos 7 to Oracle.
> Nothing about Centos 8 in that script, though.
>
> https://linux.oracle.com/switch/centos/
>
> That page seems to say that Oracle Linux is everything that Centos was
> prior to today's announcement.
>
> But someone else here just said that the first thing Oracle Linux does is
> to sign you up for an Oracle account.
>
> So, for people who know a lot more about these things than I do, what's
> the downside of using Oracle Linux versus Centos?  I assume that things
> like epel/rpmfusion/etc will work just as they do under Centos since it's
> supposed to be bit-for-bit compatible like Centos was.  What does the "sign
> up with Oracle" stuff actually do, and can you cancel, avoid, or strip it
> out if you don't want it?
>
> Based on my extremely limited knowledge around Oracle Linux, it sounds
> like that might be a go-to solution for Centos refugees.
>
> But is it, really?
>

KVM is a subscription feature. They want you to run Oracle VM Server for
x86 (which is based on Xen) so they can try to upsell you to use the Oracle
Cloud. There's other things, but that stood out immediately.

Oracle Linux FAQ (PDF):
https://www.oracle.com/a/ocom/docs/027617.pdf
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Re: [CentOS] [CentOS-devel] https://blog.centos.org/2020/12/future-is-centos-stream/

[Jon Pruente]

On Tue, Dec 8, 2020 at 11:43 AM Phelps, Matthew 
wrote:

> "Since March 2004, CentOS Linux has been a community-supported distribution
> derived from sources freely provided to the public by Red Hat. As such,
> CentOS Linux aims to be functionally compatible with RHEL."
>

I hate to jump in as a Devil's Advocate here, but that says CentOS Linux.
CentOS Linux is being discontinued, so that statement no longer applies to
the project.
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Re: [CentOS] ntpdate past CentOS 7

[Jon Pruente]

On Wed, Dec 2, 2020 at 1:26 PM John Pierce  wrote:

> the problem with that sort of time sync is that if your systems clock is
> running fast, then those once a day time syncs cause the clock to be set
> BACK a few seconds or whatever (in bad cases a few minutes).
>

Modern chrony that Bill Gee pointed out does a skew unless you manually
tell it to step the time into sync.

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/system_administrators_guide/ch-configuring_ntp_using_the_chrony_suite#sect-Manually_Adjusting-the-System_Clock
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Re: [CentOS] yum update security updates only

[Jon Pruente]

On Fri, Nov 13, 2020 at 6:02 PM Eric Chennells 
wrote:

> Frank,
>
> Interesting thank you I didn't realize that.  It used to be supported I
> believe, and there is a lot of out of date 3rd party documentation floating
> around google that suggests it does.
>
> Well it's just that many enterprises have policies which state that only
> security updates should be installed, which I suspect is exactly why that
> feature is no longer supported..
>

There are ways to get the metadata to do that, but it's still not
officially supported. And as for enterprises mandating only security
updates, they would/should pay for RHEL to get that kind of feature.
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Re: [CentOS] Firefox 78 under CentOS 6 -- no sound?

[Jon Pruente]

On Sat, Oct 17, 2020 at 3:38 PM Robert Heller  wrote:

> I did a yum update on my CentOS 6 laptop and it upgraded Firefox to 78,
> and
> FF stopped seeing my mic and speakers.  Is there some magic I need to do?
> As
> a short term (?) fix, I downgraded back to Firefox 68.  My system is
> otherwise
> up-to-date.
>

Are you sure it's not the auto mute feature they introduced?

https://www.engadget.com/2019-02-04-firefox-66-prevent-auto-playing-video-audio.html
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Re: [CentOS] Drive failed in 4-drive md RAID 10

[Jon Pruente]

On Fri, Sep 18, 2020 at 3:20 PM Kenneth Porter 
wrote:

> Thanks. That reminds me: If I need to replace it, is there some easy way
> to
> figure out which drive bay is sdf? It's an old Supermicro rack chassis
> with
> 6 drive bays. Perhaps a way to blink the drive light?
>

It's easy enough with dd. Be sure it's the drive you want to find then put
dd if=/dev/sdf of=/dev/null into a shell, but don't run it. Look at the
drives and hit enter and watch for which one lights up. Then ^c while
watching to be sure the light turns off exactly when you hit it.
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Re: [CentOS] erasing a disk

[Jon Pruente]

On Mon, Sep 14, 2020 at 3:18 PM david  wrote:

> I've tried erasing the first megabyte of the disk, but there are ZFS
> or LVM structures that get in the way.  So, does anyone have an
> efficient way to erase structures from a disk such that it can be reused?
>

GPT for sure has backup metadata on the drive, so you won't be wiping it by
trying to remove the first few MB. You always should try using tooling made
for the purpose instead of trying to manually do it. In this case try a
tool like wipefs.
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Re: [CentOS] How to Migrate Wordpress Website from 32-bit CentOS Linux 6.3 to 64-bit CentOS Linux 8.2 (2004)

[Jon Pruente]

On Mon, Aug 31, 2020 at 11:35 AM Jake Shipton 
wrote:

> 2020-08-31 (月) の 13:31 + に Turritopsis Dohrnii Teo En Ming
> さんは書きました:
> >
> > SECTION 4 Disable SELinux (Security Enhanced Linux)
> > ===
> >
> > You MUST disable SELinux, otherwise Apache web server will not work.
> >
> > If you DO NOT want to disable SELinux, you must be an expert in
> > SELinux to configure SELinux.
> >
> Don't do this. You don't need to be an expert to configure SELinux, if
> you install setroubleshootd then 9 times out of 10 it will tell you how
> to fix something SELinux is blocking, and when that doesn't work,
> there's always DuckDuckGo if you're not sure.
>
> SELinux may be daunting to a newcomer, but just like Apparmor on
> Debian, it's well worth reading about and learning the security
> advantages it provides.
>
> I always advise both security methods are left enabled where a
> distribution supports them. (not at the same time.)
>
>
To make the point further, SELinux has been in the disro since 4, in 2005.
If you haven't learned it yet you are far, far, behind the times.
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Re: [CentOS] CentOS Security Advisories OVAL feed??

[Jon Pruente]

On Tue, Aug 4, 2020 at 11:34 AM  wrote:

> Q5) If the answer to the last question is "no": shouldn't there be such
> a resource?
>
CentOS doesn't publish security errata. If you need it then you should
either buy RHEL, or deal with putting together your own set up with
something like http://cefs.steve-meier.de/
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Re: [CentOS] Blog article about the state of CentOS

[Jon Pruente]

On Sat, Jun 20, 2020 at 5:41 AM Peter  wrote:

>
> This is all well and good, but I don't think that CentOS was ever meant
> to be a testing ground for RHEL.  As the name actually stands for it is
> a "Community Enterprise OS" and it has always been a rebuild of the RHEL
> sources.  Stream is basically RHEL Rolling Beta, and that can hardly be
> considered "Enterprise".
>
> I and I think many others find this focus on Stream to be rather
> distressing, and it does have the appearance to be taking focus away
> from the core OS.  This is further evidenced by the long wait times for
> release.
>

I have to shake my head at this. You're telling the guy who builds, and had
built, CentOS for years what the project is and where it is going? He told
you what Stream is and what it will be used for already. It is the new
future of the OS. That's it. You're arguing semantics about having
Enterprise in the name, while ignoring that it's still Enterprise Linux,
even if it's not the final end product because it is the future source
project of Enterprise Linux.
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Re: [CentOS] Adobe digital editions?

[Jon Pruente]

On Wed, May 27, 2020 at 2:22 PM Frank Cox  wrote:

> While I've never tried it, it's my understanding that you can use calibre
> to remove the drm encryption on a purchased ebook so you can read it with
> something like fbreader (which, as far as I know, can't read a
> drm-encrusted ebook).
>
> Calibre is also available as an appimage.
>
>
> https://bintray.com/probono/AppImages/download_file?file_path=Calibre-3.18.0.glibc2.14-x86_64.AppImage


Calibre itself doesn't, but there are 3rd party DeDRM plugins available for
that. Calibre also includes an ebook reader that handles most formats.
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Re: [CentOS] Adobe digital editions?

[Jon Pruente]

On Wed, May 27, 2020 at 1:34 PM Yves Bellefeuille  wrote:

> "Robert Heller"  wrote:
>
> >  Are the books epub type files?  If so, you can install fbreader from
> >  epel.
>
> Can I second this suggestion? What kind of files are you trying to read?
>

A major issue is that it's not just reading the file, it's that ADE is
needed to even authorize and fulfill the download. Then the possibility of
DRM on top of that.
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Re: [CentOS] Centos 8 on Macbook

[Jon Pruente]

On Thu, Jan 30, 2020 at 2:27 PM david  wrote:

> Folks
>
> I am trying to install Centos 8.1 on a MacBook Pro.


There are many generations of different designs of MacBook Pro hardware.
Could you share the model and type and year?
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Re: [CentOS] [semi-OT] C7 Possible bug but I can't determine what tool has the problem

[Jon Pruente]

On Wed, Jan 15, 2020 at 11:38 AM Alessandro Baggi <
alessandro.ba...@gmail.com> wrote:

> Hi Jon,
> I wrote in the first mail the script with the current order of command
> that I used. Try to run in a bash script and you will see the result.
>
> If not my sequence is:
>
> dd if=/dev/zero of=src/testfile bs=1M count=100
> rsync -avS src/ dest/
> du -h dest/testfile
> du -b dest/testfile
>
> for urandom:
>
> dd if=/dev/urandom of=src/testfile bs=1M count=100
> rsync -avS src/ dest/
> du -h dest/testfile
> du -b dest/testfile
>
> without --sparse the same as first sequence without -S option.
>
> But why du reports 0M when with -b reports correct bytes and why this
> happens only with zeroed file?
>
>
Ah, I misunderstood what you meant. I had thought you might have created a
file with urandom first and then overwrote it with zeros. This is behaving
as expected with sparse files. You can create a sparse file with dd by
using seek:
https://www.thegeekdiary.com/how-to-create-sparse-files-in-linux-using-dd-command/
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Re: [CentOS] [semi-OT] C7 Possible bug but I can't determine what tool has the problem

[Jon Pruente]

On Wed, Jan 15, 2020 at 10:18 AM Alessandro Baggi <
alessandro.ba...@gmail.com> wrote:

> I made several test to see what happens and noticed that removing -S
> (--sparse) from rsync command problem does not occour.
> In another test, thinking about a problem on 0ed file, I tried file
> generation using /dev/urandom then /dev/zero and running rsync -avS the
> problem is disappeared.
>

https://wiki.archlinux.org/index.php/Sparse_file#Creating_sparse_files

In short, rsync is being told to create sparse files with the -S flag, so
it does.  Could you share what you did with the urandom then zero test you
mentioned? I'm curious what exact sequence of commands you used.
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Re: [CentOS] Nginx on CentOS 7: which one for production?

[Jon Pruente]

On Thu, Dec 26, 2019 at 4:17 AM Nicolas Kovacs  wrote:

> I wonder which version is recommended for production use on CentOS 7.
> Any suggestions?
>

It all depends on your needs. The nginx repo has 1.16.1, EPEL currently has
nginx 1.16.1 as well but could lag depending on the package maintainer. My
take is that the upstream repo will be the most up to date, but the EPEL
repo might be the most "correct" or tested on RHEL/CentOS.
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Re: [CentOS] No CentOS 8 Updates announced in Centos-announce email list

[Jon Pruente]

On Tue, Nov 5, 2019 at 3:01 PM Leon Fauster via CentOS 
wrote:

> > I looked all over the CentOS site for the RSS link and could not find it.
> > I would subscribe to it, if I could.
>


> List:
> https://feeds.centos.org/


That *really* should be in the listing of sites under News & Events on the
main centos.org page since it isn't in the header or footer of the site
like most do.
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Re: [CentOS] upgrading from CentOS 7 to 8

[Jon Pruente]

On Tue, Oct 1, 2019 at 1:32 PM Elliot  wrote:

> In my career, I've managed many Debian, Ubuntu, Fedora, and CentOS
> systems, and I found that in-situ upgrading of Debian, Ubuntu, and
> Fedora are usually easy and convenient.


I'll concur in my experience. I've upgraded a number of Ubuntu servers
through major version updates. The longest jump I have is on Fedora Server.
One particularly central and critical server was built before I arrived,
with Fedora 18. I have personally upgraded that on every release starting
from 21 on up to the current 30. It's certainly possible to have major
version upgrades be reliable. The big trick is to read release notes for
any software you are using and note any issues they mention.
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Re: [CentOS] CentOS 8.0 1905 is now available for download

[Jon Pruente]

On Wed, Sep 25, 2019 at 12:01 PM Łukasz Posadowski 
wrote:

> I'm trying it right now. I pleasantly discover PHP 7.2 with fpm and
> Python 3.6, which is exactly what I installed from 3rd party
> repositories in Centos 7 on my vps. I will test upgrade from C7 to
> disable epel and webtatic.


Did you try SCL instead of directly installing packages from another repo?
It is similar to how the new Appstreams allow multiple concurrent versions.


> I'm waiting for blogs and "youtubs" to report
> on appstream and what I could install from Fedora maybe. I have more
> confidence in Fedora repos than epel, since the latter is usually
> rebuild Fedora packages anyway.
>

EPEL is a Fedora SIG project.
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Re: [CentOS] CentOS 8.0 1905 is now available for download

[Jon Pruente]

On Tue, Sep 24, 2019 at 6:53 AM Randal, Phil 
wrote:

> Workaround is to select the install option, hit the tab key, and append
> vga=819 and hit F10, which starts the graphical installer on a larger
> virtual display.
>

Did you rather mean vga=319 ?
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Re: [CentOS] CentOS Amazon Machine Image?

[Jon Pruente]

On Tue, Aug 20, 2019 at 4:48 PM Robert Moskowitz 
wrote:

> Tru, it is getting me closer.  Next step is to figure out how to get
> this image on an EC2 instance.  Or whatever it is suppose to be called.
>
> AH, I think I have it.  The Centos Image is free, but the infrastructure
> cost is $0.012/hr which means 1 image per free in the free tier.
> Additional images come out to $9/mo.
>
> So if I have this right, I can play around all I want and learn on a
> single image, but 2nd image will cost.
>

It's an AMI (Amazon Machine Image). You launch a new EC2 instance and in
the setup you can search for and choose the CentOS one. It wasn't in the
first search page for me, I had to click further into "AWS Marketplace" to
find it. AWS bills per hour (though some newer AWS stuff is moving to
per-second). In the free tier you get 750 hours of t2.micro run time for
free. A typical month is 744 hours. You can split that up however you want.
Run 75 instances for 10 hours each? Sure. Run 750 instances for 1 hour
each? Sure. AWS billing can get complex, but be aware that you can be
charged for run time of your instance(s), additional storage space,
bandwidth overages, etc. There isn't much to worry about if you are being
reasonable but TANSTAAFL so read through https://aws.amazon.com/free/ and
understand what the limitations are.
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Re: [CentOS] Question on server speed

[Jon Pruente]

On Mon, Aug 5, 2019 at 2:01 PM Jerry Geis  wrote:

> Anyway to use "nice" command to help with responiveness?   I was just using
> "rsync . /media/external" to do the copy.
>

You need to discover where it is blocking before deciding which solution
will work. Something like iotop, atop, or other more wide system monitoring
util will be more valuable than top/htop at this point since you seem to be
sure that's it's not the processor usage that is the issue. nice will only
work for scheduling processor use. There is the ionice command that can be
used to set I/O priority. It really doesn't sound like you have a problem
with process scheduling, so it's is probably more down the line of what you
would want to try depending on what a system util tells you.
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Re: [CentOS] virsh: howto convert storage type of VMs?

[Jon Pruente]

On Thu, Aug 1, 2019 at 2:50 PM hw  wrote:

>
> Hi,
>
> how can I convert the storage type of VMs from being stored in
> individual qcow2 files to being stored in a storage pool?
>
> The VMs may be shut down during the conversion.
>

qemu-img convert -O {output_type} {inputfile} {output_file or pool path}
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Re: [CentOS] Anyone with RedHat Subscription?

[Jon Pruente]

On Tue, Jul 2, 2019 at 8:28 AM Jason Pyeron  wrote:

> This is kinda of why it makes sense to purchase at least one license.
>

Red Hat does now offer free developer subscriptions which includes access
to the Red hat Customer Portal. You officially need a business or
enterprise email address, which I verified when they rejected my personal
gmail address the first time. It recommended that I change it to a business
or enterprise one, but instead I just used a gmail supported + alias (
me+red...@gmail.com ), which Red hat accepted. (
https://gmail.googleblog.com/2008/03/2-hidden-ways-to-get-more-from-your.html )
It's very worthwhile to have a Red Hat Dev Subscription so you can try
newer releases before they get released downstream by CentOS and others,
and also to get access to otherwise hidden subscriber content.
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Re: [CentOS] Disk Performance Issue

[Jon Pruente]

On Mon, Jun 24, 2019 at 10:42 AM Chris Olson via CentOS 
wrote:

> Advice regarding this issue and any possible diagnostic methods
> will be greatly appreciated.
>

Install smartmontools. You can use the smartctl tool to get all of the
S.M.A.R.T. data for the drive. You can also set up the config to email you
(or whoever) when a S.M.A.R.T. error occurs.
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Re: [CentOS] system unresponsive

[Jon Pruente]

On Wed, May 22, 2019 at 10:02 AM mark  wrote:

> That seems unlikely. Foe one, I've seen that... but I *always* see entries
> in the log about the oom-killer being invoked. For another, this isn't a
> compute node, it's *only* a fileserver, serving projects, home
> directories, and backups (home-grown b/u, uses rsync), and backups don't
> start until well after midnight, and as we're business-hours only, there
> was less usage, and it does have 256G RAM
>

I have two servers that would lock up like this occasionally, and if I let
them sit at the console long enough sometimes they would give a login
prompt. It took a lot of time and frustration (these are prod servers) but
I tracked it down to a problem in the XFS driver, as it never occurred on
the systems with EXT4 filesystems. The XFS driver would hang, preventing
writes to the filesystem. I could identify exactly when that happened as
all system logging would suddenly stop at the same second. Then OOMKiller
would come in and start killing off processes but that wouldn't be in the
logs on disk because the file system couldn't write. I rolled the servers
back to a 5xx series kernel and the issue didn't resurface. I recently let
them boot the newer 9xx series kernels and I'm hoping the XFS issue is
fixed.
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Re: [CentOS] No network on cloned CentOS 7 installation

[Jon Pruente]

On Fri, May 3, 2019 at 11:48 AM Nicolas Kovacs  wrote:

> Here's what I did.
>
> 1. Install one computer and zero unused hard disk sectors with dd.
>
> 2. Send the image to a local FTP server using G4L (Ghost4Linux).
>
> 3. Fetch the image on another computer.
>
> 4. Boot the new computer in rescue mode and change the hardcoded
> /etc/hostname to a new value.
>
> Let me add that I removed all hardcoded MAC addresses from
> /etc/sysconfig/ifcfg-em1, which has only very limited information in it.
>
> What else could cause the network to choke on a cloned installation?
>

systemctl daemon-reload

That will cause SystemD to refresh it's internal state about the settings
in config files.
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Re: [CentOS] Mail Server Guides

[Jon Pruente]

On Fri, Mar 1, 2019 at 11:53 AM Ben Archuleta  wrote:

> I need to set up a new mail server to replace an aging CentOS 6.3 mail
> server. I was wondering what were some of the best guides on the web for
> Postfix (Maildir), Spamassassin, ClamAV, Dovecot?
>

The one I've seen as a long time recommendation is the ISPMail Guide at
https://workaround.org/ispmail It is Debian centric, but can be adapted to
CentOS.
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Re: [CentOS] Finding memory usage

[Jon Pruente]

On Fri, Jul 27, 2018 at 12:07 PM, Jon Pruente 
wrote:

> to revert to booting a 514 series kernel or converting to EXT4, depending
> on the needs of the particular server. Everything I've converted to EXT4
> has been rock
>

Scratch that, I just looked and it was reverting to a 327 kernel that
helped.
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Re: [CentOS] Finding memory usage

[Jon Pruente]

On Fri, Jul 27, 2018 at 10:41 AM, Bowie Bailey  wrote:

> > On a lark, what kind of file systems is the system using and how long g
> had
> > it been up before you rebooted?
>
> The filesystems are all XFS.  I don't know for sure how long it had been
> up previously, I'd guess at least 2 weeks.  Current uptime is about 25
> hours and the system has already started getting into swap.


I've had multiple systems (and VMs) with XFS filesystems that had troubles
on the 693 series of kernels. Eventually the kernel xfs driver deadlocks
and blocks writes, which then pile up in memory waiting for the block to
clear. Eventually you run out of RAM and OOM killer kicks in. The only
solutions I had a the time was to revert to booting a 514 series kernel or
converting to EXT4, depending on the needs of the particular server.
Everything I've converted to EXT4 has been rock stable since, and the very
few I had to run a 514 kernel on have been stable, just not ideal. It may
be fixed on the newer 8xx series but I haven't dived into them on those
systems yet.

If it happens again the look for processes in the D state and see if
logging is continuing or if it just cuts off (when the block started).
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Re: [CentOS] Finding memory usage

[Jon Pruente]

On Fri, Jul 27, 2018, 10:10 AM Bowie Bailey  wrote:

> I have a CentOS 7 server that is running out of memory and I can't
> figure out why.
> 
> The problem is that I can't find 2.4G of usage.  If I look at resident
> memory usage using "top", the top 5 processes are using a total of
> 390M.
>

On a lark, what kind of file systems is the system using and how long g had
it been up before you rebooted?

>
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Re: [CentOS] Certbot error CentOS 7.5

[Jon Pruente]

On Tue, Jul 10, 2018 at 7:54 AM, Jerry Geis  wrote:

> Hi All - I am running CentOS 7.5 and trying to use certbot.
> I am getting an error 403 forbidden on the
> /.well-known/acme-challenge/-CG_gSckofY5ln7TdMvoanDI1_FBRh8otQkyB0hxmoo
>
> Some searching indicated permission problems... I also noticed that the
> /var/www/html   directory does not even have the .well-known directory in
> it.  The /var/www/html directory was root:root  I changed it to root:apache
> and still same error.
>  ls -l /var/www/
> total 0
> drwxr-xr-x. 2 root root 6 Jun 27 09:49 cgi-bin
> drwxr-xr-x. 6 root apache 214 Jun 27 09:49 html
>
> Anyone ran into this ? Got a fix?


Have you checked and verified the SELinux ACLs for your web dir? ( ls -Z )
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Re: [CentOS] Semi-OT: ipmitool or ipmicfg: set BMC to use NIC 2

[Jon Pruente]

On Tue, Jun 26, 2018 at 4:10 PM, mark  wrote:

> So you're saying I should set the MAC address for the lan channel 1 to the
> MAC address of the second NIC?


No, you don't do anything to the MAC addresses on the BMC/IPMI. They
already have their own preset values. You decide which port you want to use
for IPMI from the ones it supports and set it up with various commands (or
use the BIOS/UEFI). The gist of what you are doing is just setting up an IP
address on an embedded computer. It just so happens that that embedded
computer can simultaneously communicate over the same ports as the host
computer and may also/instead have its own dedicated port.

If you give ipmitool an incomplete command it will print out the list of
further options.

ipmitool lan set
(prints a list of sub-sub-command options)

For a static IP on the second port you'd use

lan set 2 ipaddr 10.0.0.15 (whatever your desired IP is)
lan set 2 netmask 255.255.255.0 (or whatever your matching netmask should
be)
lan set 2 defgw ipaddr 10.0.0.1 (or whatever your gateway is)

If you want to use DHCP then find the MAC with

lan print 2 (or whichever channel/port number you are setting up)

Then set that MAC up in the DHCP server and set the BMC to pull DHCP with

lan set 2 ipsrc dhcp
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Re: [CentOS] Semi-OT: ipmitool or ipmicfg: set BMC to use NIC 2

[Jon Pruente]

On Tue, Jun 26, 2018 at 4:06 PM, Jon Pruente 
wrote:

>  or configure the MAC shown by issuing 'lan print 2' in the ipmitool shell.
>

I should finish that sentence.

... or configure the MAC (shown by issuing 'lan print 2'  in the ipmitool
shell) in your DHCP server. Though, running server management IPs in DHCP
isn't a great idea, because how do you access the management if the DHCP
server is down?
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Re: [CentOS] Semi-OT: ipmitool or ipmicfg: set BMC to use NIC 2

[Jon Pruente]

On Tue, Jun 26, 2018 at 3:16 PM, mark  wrote:

> The man page isn't helping, nor have I been able to find examples that
> work.
>
> For example, the man page claims I can do ipmitool lan get active, and I
> try, and it says, "invaling lan command, get".
>

get isn't a recognized subcommand under lan in the ipmitool I have
installed.


> Do I set the MAC address for the lan to NIC 2? Anyone have a clue - I do
> *not* want martians on the real network.
>

This will be very dependent on your motherboard and its BMC capabilities.
Some can do IPMI on specific ports and not others. On the Intel S2600
series that I use they can use port 1, 2, and a dedicated RMM port, but not
ports 3 and 4. You'll need to check your mobo suppport docs to see if it
can even handle IPMI on  the second port. If so, you just configure it with
the IP setting you want for static, or configure the MAC shown by issuing
'lan print 2' in the ipmitool shell. Very often the MACs is sequential , so
you can guess it by looking at the MACs of the normal ethernet ports and
adding 1, 2 or whatever.
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Re: [CentOS] Convert from LVM

[Jon Pruente]

On Fri, Jun 8, 2018 at 1:00 PM, Robert Heller  wrote:
>
> Unlike MS-Windows, Linux is (generally) perfectly happy to disk
> "transplants",
> so long as you are careful about re-installing grub and making sure the
> grub
> config has the right "magic".


 Also update /etc/fstab and anything else the might refer to a UUID or dev
entry, like /etc/mdadm.conf or /etc/lvm/lvm.conf etc. Maybe run a "grep -ri
'uuid' /etc" to find anything pointing at a UUID entry.
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Re: [CentOS] Slightly OT : write bootable CentOS USB disk under Windows 10 and Mac OS X ?

[Jon Pruente]

On Thu, Jun 7, 2018 at 10:44 AM, Noam Bernstein  wrote:

> I tend to do the analogous thing on the mac, except for converting the
> image first:
> https://www.lewan.com/blog/2012/02/10/making-a-bootable-usb-
> stick-on-an-apple-mac-os-x-from-an-iso


If you are using dd then there is no reason to convert the file.
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Re: [CentOS] Slightly OT : write bootable CentOS USB disk under Windows 10 and Mac OS X ?

[Jon Pruente]

On Thu, Jun 7, 2018 at 10:39 AM, Nicolas Kovacs  wrote
>
> How do you write a bootable CentOS USB disk using either Windows 10 or
> Mac OS X ?
>
> I've googled this, of course, and there's quite a lot of possible
> solutions out there, so I'm curious about a more or less *orthodox* way
> of doing things.
>
> Me, I've been 100 % GNU/Linux since 2001, CentOS is running on my
> workstation and on my laptop, and I'm simply writing the ISO file to a
> USB stick using dd if=CentOS-.iso of=/dev/sdX.
>
For macOS you can use dd as well, but you should use the raw device instead
of the buffered one. So, if your drive is set as disk2 (checked by running
'diskutil list') instead of /dev/disk2 you would use /dev/rdisk2 as a
target. Also not that the units used by the bs flag are specified slightly
differently, as lower case characters, ie. bs=1m instead of bs=1M
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Re: [CentOS] Yum-cron

[Jon Pruente]

On Fri, May 11, 2018 at 10:36 AM,  wrote:
>
> And there is *NO* reason whatever for a "yum-hourly*. None. This is
> CentOS, not ubuntu-snapshot-of-the-moment.
>
> I don't know if this is from upstream or not, but it's wrong. I mean, even
> Redmond only pushes out patches once or twice a month, except for critical
> fixes.,,,.
>

Are willing to wait up to 24 hours for new security patches, or only an
hour?
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Re: [CentOS] VirtualBox on CentOS 7 with bridged network not working

[Jon Pruente]

On Thu, Mar 15, 2018 at 10:47 AM, James Pearson 
wrote:

> Googling doesn't show up any similar issues, so I guess I'm missing
> something on the host machine
>
> Does anyone have any idea what could be the issue?
>

What kind of hardware? There can be issues with trying to bridge across a
WiFi connection and you may need to use NAT. On wired on a server I've had
issues where the network had multiple VLANs allowed directly to the
ethernet adapter and I had to configure where the VLAN was being tagged for
the VMs. A bit more fleshed out description of your hardware and network
set up would help out.
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Re: [CentOS] Install CentOS 7 on MBR hard disk

[Jon Pruente]

On Thu, Feb 15, 2018 at 5:18 PM, Stephen John Smoogen 
wrote:

> The only other thing I can think of is that the disk was already
> formatted to GPT. In that case it has to be EFI. [I had a disk which
> was GPT partitioned and removing that was quite a challenge as I had
> done a 'dd if=/dev/zero of=/dev/sda bs=512 count=10' and it still kept
> coming up as GPT. I believe I had to run a different disk command to
> really clean it.]
>


That didn't get rid of it because GPT keeps a secondary copy of header info
at the end of the drive. To really get rid of it use a tool that wipes GPT
headers, or a full wipe of the drive. gdisk has eXpert mode that has an
option (z) to wipe GPT headers.

https://en.wikipedia.org/wiki/GUID_Partition_Table#/media/File:GUID_Partition_Table_Scheme.svg
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Re: [CentOS] logging in

[Jon Pruente]

On Tue, Jan 30, 2018 at 12:26 PM,  wrote:

> This is odd.
>
> We're seeing a *lot* of
> sshd[8400]: Timeout, client not responding.
> So I'm trying to find out whose client is having issues. Trying to figure
> that, after processes are gone, I tried looking in lastlog, which is where
> it gets odd. lastlog shows root coming in, and it shows a security account
> coming in... years ago.
>
> I see one of our users logging in a goodly number of times... but lastlog
> doesn't show him. I just logged in as myself, no password, using keys...
> and lastlog doesn't show me, or my manager, or anyone else.
>
> Does anyone have any idea why lastlog's not recording *all* logins?
>

You can look at /var/log/audit/audit.log to see more detail than what last
shows. A nice tip is to pipe the output through another tool to convert the
timestamps to human readable date and time.

tail -f /var/log/audit/audit.log | ausearch -i
or
tail -f /var/log/audit/audit.log | perl -pe 's/(\d+)/localtime($1)/e'

via
https://serverfault.com/questions/327846/convert-selinux-log-date-format-from-epoch-to-normal
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Re: [CentOS] Failed attempts

[Jon Pruente]

I can confirm that this IP had been actively and repeatedly hitting
honeypots in the community honeypot network I'm a part of.

On Mon, Nov 27, 2017 at 11:10 AM, Jerry Geis  wrote:

> hi All,
>
> I happened to login to one of my servers today and saw 96000 failed login
> attempts. shown below is the address its coming from. I added it to my
> firewall to drop.
>
> Failed password for root from 123.183.209.135 port 14299 ssh2
>
> FYI - others might be seeing it also.
>
> Jerry
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Re: [CentOS] [Slightly OT] Use CentOS to create a bootable Mac OS X DVD from dmg file?

[Jon Pruente]

On Sat, Sep 23, 2017 at 12:42 PM, Valeri Galtsev 
wrote:

>
> command + R
>
> (for recovery mode). Sorry about all types I made: typing on android is
> sooo weird...


If it supports it, which running 10.5.7 isn't likely. Recovery Mode wasn't
on the hard drive until 10.6, and Network Recovery wasn't until 2010 models.
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Re: [CentOS] Notice: Check your tuned settings for a performance boost.

[Jon Pruente]

On Fri, Sep 22, 2017 at 12:05 PM, Frank Cox  wrote:

> On Fri, 22 Sep 2017 09:04:58 -0700
> Jim Perrin wrote:
>
> > Yes. This command will drop an 'active-profile' file in /etc/tuned that
> > will be used and survive reboots, kernel updates, etc.
>
> [root@mutt frankcox]# tuned-adm active
> Current active profile: virtual-guest
>
> ???
>
> This is my main desktop computer and it isn't any kind of a virtual
> system.  I do run VirtualBox on it occasionally, though.
>
> What could have happened here?
>

Does virt-what give you any output?
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Re: [CentOS] Connecting to internet with USB tethered iphone

[Jon Pruente]

On Fri, Sep 22, 2017 at 10:39 AM, Larry Martell 
wrote:

> Seems something else is using usb0 - without the phone connected I see
> something on usb0 when running ifconfig. I think it's some internal
> network.  I tried running those commands when the phones be was connected
> but the system still is not on the internet.


Run 'udevadm monitor' with sudo or as root and watch for what /dev entry
the phone picks up when it is plugged in. Use that one in your ip or dhcpd
commands.
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Re: [CentOS] xfs not getting it right?

[Jon Pruente]

On Wed, Sep 20, 2017 at 11:12 AM, hw  wrote:

> Are you saying there is no difference between a RAID1 and a non-raid
> device as far as xfs is concerned?
>
> What if you use hardware RAID?
>

RAID1 is mirroring. There is nothing to stripe because the virtual device
is almost identical to the physical drives, and they both see the same read
and write instructions in parallel.
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Re: [CentOS] update to 7.4

[Jon Pruente]

You'll want to look into 'yum history' with the 'info' and 'undo'
subcommands. Not sure how well it works for larger updates but I've had
success on broken packages.

On Tue, Sep 19, 2017 at 11:51 AM, Jerry Geis <jerry.g...@gmail.com> wrote:

> I was doing an update to 7.4 and somewhere in middle the machine died.
>
> If I drop back to a previous kernel the machine is alive. So how do I say
> "forget the previous yum update" and start all over and do it again.
>
> Booting into the new kernel I get a kernel fault. So going back one level
> on teh boot screen solves that - I just need to start the update again. How
> is that?
>
> Thanks,
>
> Jerry
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Re: [CentOS] cyrus spool on btrfs?

[Jon Pruente]

On Fri, Sep 8, 2017 at 2:52 PM, Valeri Galtsev 
wrote:

>
> manufacturers/models here. My choices would be: Areca or LSI (bought out
> by Intel, so former LSI chipset and microcode/firmware) and as SSD Samsung
>

Intel only purchased the networking component of LSI, Axxia, from Avago.
The RAID division was merged into Broadcom (post Avago merger).
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