Once upon a time, Fabian Arrotin said:
> Migration is scheduled for """"Tuesday April 8th, 7:00 am UTC time"""".
> You can convert to local time with $(date -d '2024-04-08 07:00 UTC')
April 8, 2024, is Monday, not Tuesday.
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things, and it can break even more things in IPv6.
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nformation (basically
what it can create in the iptables back-compat mode). The nftables
rules created by firewalld don't fall into that category, so can't be
viewed by iptables.
Instead, use the nft command, like "nft list ruleset" to see a dump of
all current rules.
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installed, it can also be used for
serial access... run "screen /dev/ttyS0 9600" (change the device and
speed as needed). Screen has its own superset of VT102, so you can set
TERM=screen, but it is also possibly close enough to the linux terminal
emulation to work directly (they
gap between a RHEL
8.x release and the corresponding CentOS release will drop.
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2018-04-10 2018-10-30 203
7.6 2018-10-30 2019-01-28 90
7.7 2019-08-06 (didn't find release notes)
7.8 2020-03-31 2020-04-27 27
8.1 2019-11-05 2020-01-15 71
8.2 2020-04-28
RAID and
a bootloader).
Anybody else run into this? Any ideas? I've been installing from
kickstarts for ages, including software RAID, but not CentOS 8 with
software RAID until now.
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Once upon a time, Chris Adams said:
> I am trying to use a kickstart to install CentOS 8.2 on a server with a
> pair of drives with Linux software RAID 1. The install completes, but
> the resulting system will not boot - I get "Booting from Hard drive C:"
> from the BIO
is that there are
many cheap adapters on Amazon that claim to be Prolific or FTDI but are
in fact counterfeit clones - those may or may not work reliably for ANY
purpose.
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s well as newer Fedora (similar but newer
kernels). Are you sure you weren't doing something in an unsupported
and/or undefined way that just happened to work on CentOS 6?
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le are confusing UEFI and Secure Boot.
UEFI is a replacement for the ages-old BIOS - Secure Boot is an
extension to UEFI to create a "trusted" (for whatever that may mean)
boot chain to get to the OS. You can have UEFI without having Secure
Boot
kage installs its files directly to the EFI partition where they are
needed.
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something like
this can be a lesson on "hmm, hadn't thought of that before" type things
to watch for in other areas.
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elieve that when creating an external snapshot, you have to either
specify --disk-only (to not snapshot RAM), or supply --memspec (to
specify how/where to save RAM).
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/misc-scripts/
I know you can use driver disks to load additional modules from
elsewhere, but I wanted to end up with the kernel-plus anyway, so why
not just do it during install?
Lightly tested, but seems to work. Posting here in case it is useful to
others.
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but mdraid has grown support for Intel (and maybe some other?) common
motherboard RAID. So, /dev/md doesn't inherently mean "Linux
software RAID" for a while now.
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wn provA; nmcli con
up provB". You'd only want one to autoconnect though, so maybe:
nmcli con down provA
nmcli con mod provA autoconnect 0
nmcli con up provB
nmcli con mod provB autoconnect 1
Or you could even get fancier with a script that would check th
e multi-valued (such as
addresses and routes), you can prefix with + or - to add or remove just
one entry. For example, to remove just address 10.1.1.2/24:
nmcli con mod em1 -ipv4.address 10.1.1.2/24
nmcli con up em1
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oVirt
itself doesn't include backup software (it supports VM snapshots and
clones), but there are several third-party backup tools (both free and
commercial) compatible with oVirt/RHV, like Storeware's vProtect (I
haven't used it but seen others mention
Once upon a time, Nicolas Kovacs said:
> Le 12/04/2021 à 23:11, Chris Adams a écrit :
> > oVirt
> > itself doesn't include backup software (it supports VM snapshots and
> > clones), but there are several third-party backup tools (both free and
> > commercial)
may have been a hack around the kernel not balancing well to begin with
of course).
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7;t
many requests to do that (so it isn't a well-supported thing to change).
It looks like something like this might do it:
authselect create-profile sha256 --base-on=sssd
sed -i 's/sha512/sha256/g' /etc/authselect/custom/sha256/*
authselect select custom/sha256
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panies (sometimes imperfectly, as seen
with the VPN mess just before FreeBSD 13 release).
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to know who is
> logged in, do probably yes, bit I'm not sure.
I haven't dug into it, but I'm thinking there was some policy or library
change that isn't quite right... sssd_be also has the same denial on
startup (so every boot).
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Once upon a time, Chris Adams said:
> Once upon a time, Łukasz Posadowski said:
> > From 11.06 journal is logging a lot of denied access to /proc for
> > unix_chkpwd by selinux. They are so frequent, that I see them in
> > htop. :) Right now I have 2122 logges denials.
core issue is a more fundamental
> one: Red Hat, our upstream, is walking away from traditional server
> needs.
Like any commercial product, RHEL exists for Red Hat's customers... so
if you want to see something specific from RHEL, you need to be a
customer to g
ld be satisfied).
Have you run Teams before on this system? If so, I've found that it
tends to bog down over time, which I suspect is something like it
growing a cache without bounds or the like. If that's the case, I
suggest removing its data and re-logg
(I didn't
find a list in a quick search), so don't think they claim that CentOS 7
is supported. I think they just say "here's an RPM" and "here's a
repo".
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ng a floppy image after floppy
image). I wonder if it would install in a modern VM?
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forward, or are modules just still to be filled out?
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Once upon a time, Stephen John Smoogen said:
> On Sun, 14 Nov 2021 at 17:48, Chris Adams wrote:
> > I started looking at 9-stream a bit... and I notice there are no package
> > modules. All the things that were modules in 8/8-stream appear to have
> > been folded back into
idge-slave-em1
# Disable the original config
nmcli con mod em1 autoconnect 0
Then you set your VMs to use the bridge - in the libvirt XML for
example, you'd have something like:
Inside the VM, configure
I'm starting to look at CentOS 9-stream... what is the CRB repo? It
appears to be a lot of development libraries and such, but I didn't see
a definition or "CRB" anywhere.
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Make a connection for the physical ethernet em1 to be part of the bridge
> > nmcli con add type ethernet ifname em1 master bridge-br0
does it. If you don't specify a connection name, NM names a new bridge
member connection profile as "bridge-slave-".
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Will the Fedora EPEL repo RPM be added to any CentOS 9-stream core
repos, like epel-release is in 7 and 8-stream extras?
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is -v3, but not -v4.
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ing file contents on the "full"
> backup weekly or monthly.
Unless you never write to the disk, that will still be lost in the noise
of writes. But if it still bothers you, use rsync --open-noatime.
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es (in which case, why back up), this will
still be lost in the noise of total writes. Any old SSD will handle
that just fine for many years to come.
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s happening?
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x27;s incomplete. Instead, you can use something like:
https://github.com/sshambar/nmutils
to add event scripts to NM to handle it (although IIRC I had a couple of
issues with those scripts too, but didn't get back to working it all
out).
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--metalink=https://mirrors.centos.org/metalink?repo=centos-baseos-9-stream&arch=x86_64
repo --name=appstream
--metalink=https://mirrors.centos.org/metalink?repo=centos-appstream-9-stream&arch=x86_64
repo --name=crb
--metalink=https://mirrors.centos.org/metalink?repo=centos-crb-9-stream&
RUB2's FS handling anyway, so
this case is probably far down the list.
I think that having RAID 1 for /boot and/or /boot/efi can be helpful
(and I've set it up, definitely not saying "don't do that"), but has to
be handled with care and possibly (probably?) wo
don't think any filesystems care (I know I've mounted
snapshots of ext4 and IIRC xfs on the same system, haven't touched
btrfs).
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o this for example).
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is false, while
test -blob is true).
Note that bash has test and [ as shell builtins, but the external
command /usr/bin/test and /usr/bin/[ have the same behavior.
The [[ ]] method is a bash extension, and treats a test operator without
a corresponding operand (e.g. [[ -z ]]) as an error condition inste
ackage was orphaned in Fedora, so there's no maintainer to create
and manage builds.
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os.eggycrew.com
volico.mm.fcix.net
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Once upon a time, Chris Adams said:
> The package elfutils-debuginfod-client is needed for even a minimal
> install, but it is not available on most mirrors. I suspect some are
> excluding mirroring debuginfo packages with just a *debuginfo* pattern
> to rsync, where they should
his will not be the case for the second half of a RHEL major release
life cycle, because the corresponding Stream will be EOL and no longer
updated.
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quot;, I'd be interested in seeing a
newer mailman packaged elsewhere (maybe EPEL?).
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I don't have to.
Anybody have any tips, pointers, etc.?
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Once upon a time, Les Mikesell said:
> On Wed, Feb 4, 2015 at 10:05 AM, Chris Adams wrote:
> > I have an existing office of Windows computers, in a domain, with a
> > couple of Windows Server 2012 AD servers. I need to add a file server,
> > so I'd prefer to use C
ely a waste
of time and just makes it more difficult for legitimate use. With large
bot networks and tools like zmap, finding services on alternate ports is
not that hard for the "bad guys".
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a network name
service of some type (e.g. LDAP), don't do this.
The real question is: what are you trying to achieve with a backup MX?
If it is to store mail when the primary is down, legitimate remote mail
servers will do that for you; you don't need to have a backup.
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l as part of
command argument processing, and it is empty/not set, the command would
be run as:
[ = law00css ]
That's invalid syntax. If instead, you call it with $file in quotes:
[ "" = law00css ]
That's valid syntax (and then tests as false).
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http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html
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cent leap second
issue had to do with timers not triggering in the expected way (can't
remember if that was kernel, or just applications/libraries not handling
a kernel change).
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x27;t
hit by the 2012 issue, so I don't have a simple test for that.
So again, if you want to make sure there's no new issue, you'll have to
set up a test yourself. I doubt the 2008 or 2012 issues will happen
again, but there's plenty
Once upon a time, Les Mikesell said:
> On Fri, Mar 6, 2015 at 2:45 PM, Chris Adams wrote:
> > So again, if you want to make sure there's no new issue, you'll have to
> > set up a test yourself. I doubt the 2008 or 2012 issues will happen
> > again, but there&
#x27;d be out
of step with all the rest of the Internet for anything that uses POSIX
seconds (fileservers for example), and always think the clock was slow
(plus you'd have to run a custom copy of NTP to not try to "fix" the
clock).
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's
"primary" IP (especially since keepalived adds all the virtual IPs with
a /32 mask).
This is probably not related to my problem, but I just thought it was
odd. Is there a way to control this?
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Once upon a time, Tim Dunphy said:
> pid=$(ps -ef | grep cassandra | grep -v grep | grep -i -v -e grep -e screen
> -e s3fs|awk '{print $2}')
You can probably replace that with a much cleaner pid=$(pidof cassandra).
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be bash
> everywhere; eg Ubuntu; "-x" and not "+x" because "-x" means "turn on debug"
> but "+x" means "turn _off_ debug")
Unless you have specific bashisms (which I don't think the original did,
and you should mostly avoid in
st and then the program name. The -x options tells it to
look for script-like things as well.
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Can we take the license wanking off the list please? I don't think
either of the people arguing are actually lawyers, so it has no
relevance.
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agement. Also, BTRFS
has features that ZFS does not.
I expect BTRFS to get a lot more mature in the near future, as Facebook
is putting resources into moving parts of their infrastructure to BTRFS.
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CDDL
2: Arguing about it here will not change #1
3: CentOS ships a clone of Red Hat Enterprise Linux and so won't have
things that Red Hat's lawyers don't approve (see #2)
Please let it go. I think everybody here knows your opinion.
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orget to compile your sieve script. Also, if you filter on a
header, you may need to double the filter (put the same thing twice) due
to a old Dovecot bug that Red Hat has not yet fixed:
https://bugzilla.redhat.com/show_bug.cgi?id=1224496
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re's the timestamp of your message:
Date: Sat, 13 Jun 2015 12:54:30 -0600
It is actually about 86400 seconds ahead...
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Once upon a time, jd1008 said:
> 1 day ahead??
> According to whose clock??
Again, here's a Date: header from your email:
Date: Sat, 13 Jun 2015 13:22:43 -0600
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et something that does
(even a basic USB sound "card"), not to amp up the line-level signal to
mic-level (especially because most of the mic inputs are mono, not
stereo).
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ages have to go through the filesystem layer. They are
not allocated contiguously, so what appear to be sequential reads inside
the VM can be widely scattered across the underlying disk.
There are plenty of people that have documented the performance
d
de some of
this easier/faster/smoother. Btrfs may eventually obsolete a lot of
uses of LVM, but that's down the road.
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quot;device mapper" system. DM is just a way to map block A of
virtual device X to block B of physical device Y; at one point, there
was some discussion of kicking partition handling out of the kernel and
just going with DM for everything (requires some form of init ramdisk
though which c
and irritating. Despite what was
said on the Fedora list, this was an active change taken by anaconda
developers (to take out the "click again to accept anyway" option), so
they should expect people to complain to them and be prepared to ha
e to use our existing AD
setup (rather than manage local users) to make it easier to manage
users/passwords.
Is there a relatively simple method to replicate a chunk of the AD
users/passwords to a remote CentOS server (I don't care about the SSO
side of things)? Or is there some other way to s
SSH clients support that (even for
example OpenSSH on CentOS 6).
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te, there's probably some configuration issue" (but
nobody ever says what issue might lead to it).
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ver
consists of "reboot the active node"; there's no graceful cluster tool
(such as Pacemaker on Linux).
And today, when trying to open a ticket, their website is broken because
one of their DNS servers is returning 10.0.0.240 for part of their
we
t more anecdotal evidence about the company and their general
reliability.
I know there are fans of iXsystems and FreeNAS; I am not one of them
(nor is anyone in my office). We also sold a TrueNAS system to a
customer, they had trouble (different problems from us),
ource files.
>
> Does anyone have a reasonable solution?
Would it be practical to use mock and build on the oldest version you
want to support? This is how EPEL packages are built for example. It
is targeted at building RPMs, but you can manually use copy-in and
copy-out to do other thin
o with mock (I figured it out once but
don't remember now).
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under?
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Once upon a time, Louis Lagendijk said:
> On Wed, 2015-12-23 at 13:55 -0600, Chris Adams wrote:
> > In previous CentOS releases, virt-what was included in the install
> > image. This made it easy for me to spin a custom ISO with my package
> > set and a kickstart that would
Once upon a time, Johnny Hughes said:
> On 12/23/2015 02:55 PM, Chris Adams wrote:
> > In previous CentOS releases, virt-what was included in the install
> > image. This made it easy for me to spin a custom ISO with my package
> > set and a kickstart that would add open-vm
tor, your job
is about learning and adapting, not trying to keep a static setup for
life. systemd is different (just like SELinux was years ago), but I
suggest you learn it. It can make your admin life easier. Is it
perfect? No, nothing ever is; I do think it is a big improvement
though.
--
ion; lots of jobs require you to learn
new skills on an on-going basis.
I've been running CentOS 7 on all my new server installs for a year now.
Is it perfect? No, but I haven't seen the perfect OS yet. Am I still
learning? Yes, always. Do I think it is worth the higher learning
steps than say from CentOS 5->6? Yes, I do.
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esn't like change, argues
against it, and presents itself as the voice of the silent majority
(that somehow keep upgrading to new versions with all the terrible
changes).
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and just rebooted.
That's only necessary for things that are initialized in the initrd.
Unless you are using network boot, the initrd won't have any of the
network initialization, so rebuilding it is not necessary for changing
network-related confi
s being deleted or overwritten. Yes,
that could happen from an errant rm, but there are other ways that could
happen. Vendors that can't recover in some way (like BIOS CMOS
corruption can be recovered with a jumper) should be named-and-shamed as
well as potentially blacklisted
n), and once /dev/sda1 is deleted there will be no further hard
> drive write operations.
Incorrect. Once the filesystem is mounted, the kernel access doesn't go
through the filesystem /dev node, similar to how once rm is running, it
doesn't need the /lib
BIOS" implementations also had weird issues from time to
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VM image, like
virt-sparsify.
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Once upon a time, Robert Nichols said:
> On 02/08/2016 07:04 PM, Chris Adams wrote:
> >For that purpose, use something that can TRIM a VM image, like
> >virt-sparsify.
>
> That's doing the same thing.
>
> virt-sparsify works by mounting the filesystem, filling i
l have to find a
differential SCSI card that is still supported to connect it (don't know
about that; I haven't touched parallel SCSI in ages, and the TL891 was
probably the last high-voltage differential device I used).
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eth Vidal (RIP) and
others at Duke rewrote YUP (the Yellowdog UPdater) to handle Red Hat
Linux.
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ot; way to just cut systemd-journald out of the
picture and have log entries go straight to rsyslogd?
Has anyone else seen this?
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Once upon a time, Chris Murphy said:
> On Tue, Apr 26, 2016, 2:09 PM Chris Adams wrote:
> > I have several recently-installed CentOS 7 servers that keep having
> > systemd-journald corruption
>
> Determined with 'journalctl --verify' or another way?
I
Once upon a time, Chris Murphy said:
> On Tue, Apr 26, 2016 at 3:01 PM, Chris Adams wrote:
> > Once upon a time, Chris Murphy said:
> >> On Tue, Apr 26, 2016, 2:09 PM Chris Adams wrote:
> >> > I have several recently-installed CentOS 7 servers that keep
tory here:
https://github.com/dspinellis/unix-history-repo
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