[CentOS] NFS issue, C7

[m . roth]

Actually, with C6, too. We've been fighting a problem with a server with a
RAID appliance that's having issues. It's also serving /home/* and project
directories for one team. What happens is when the issues happen, NFS on
the other servers they use, of course, gags with timeouts.

Now, my question is this: if we go to reboot one of the other servers
where one or more home directories is being exported to, and is mounted by
autofs, it hangs, and will *not* reboot, because it can't let go of the
NFS-mounted directory, with the result that we have to physically go into
the room and power cycle the box.

Is there any way to configure NFS such that if a system is going down, NFS
will wait a few minutes while it retries, then time out and let it reboot?

  mark

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Re: [CentOS] fcitx-anthy request (for Japanese users)

[H]

On 07/25/2017 09:12 PM, Scott Robbins wrote:

On Tue, Jul 25, 2017 at 09:06:25PM -0400, H wrote:

On 07/20/2017 05:49 AM, Scott Robbins wrote:



assignee's free time), but anyone who would like to add their support to
the request can view the bug at
https://bugzilla.redhat.com/show_bug.cgi?id=1471924

And I filed a request for the fcitx-config-gkt2/gtk3 tools to be compiled.

Which would also be useful, especially as fcitx-pinyan is already
available.
I prefer the manual way because I've gotten so used to it, but suspect the
vast majority who want to use it as a desktop would much prefer the gui
tool.


The link is https://bugzilla.redhat.com/show_bug.cgi?id=1473715. When I checked 
today, there are no comments...

If anyone else is interested, please add your names to this bug. Thank you.

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[CentOS] What RH-like on a Dell XPS 15 (9590)?

[wwp]

Hello there,


I've just got a Dell XPS 15 (9590) at work and need to set up a stable
GNU/Linux system on it. I thought of CentOS7, but.. obviously its
kernel can't run on this hardware.

What would you recommend? Waiting for CentOS8 is not an option unless
it's a question of few weeks. Are there respins of the CentOS7 DVDs w/
more top-recent kernels? I'm know of Fedora 26 or course, and not
willing to switch to Ubuntu 16.10 at all.


Regards,

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Re: [CentOS] What RH-like on a Dell XPS 15 (9590)?

[Nicolas Kovacs]

Le 27/07/2017 à 19:25, wwp a écrit :
> I've just got a Dell XPS 15 (9590) at work and need to set up a stable
> GNU/Linux system on it. I thought of CentOS7, but.. obviously its
> kernel can't run on this hardware.
> 
> What would you recommend? Waiting for CentOS8 is not an option unless
> it's a question of few weeks. Are there respins of the CentOS7 DVDs w/
> more top-recent kernels? I'm know of Fedora 26 or course, and not
> willing to switch to Ubuntu 16.10 at all.

Usually, I install CentOS 7 with KDE on all desktop computers, mine and
those of my clients. This is my "standard" desktop installation.

https://blog.microlinux.fr/poste-de-travail-centos-7/

On more recent hardware, I usually try to run a kernel from ELRepo,
either kernel-lt or kernel-ml. One the repo is configured:

# yum --enablerepo=elrepo-kernel install kernel-{lt,ml}

I everything else fails (which happened recently on some weird el cheapo
laptop from a friend), I'll install KDE neon, which is a healthy mix of
bleeding edge and stable. This is a "least evil" solution, but it
actually works nicely.

https://blog.microlinux.fr/neon-asus/

Cheers,

Niki

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Re: [CentOS] What RH-like on a Dell XPS 15 (9590)?

[wwp]

Hello Nicolas,


On Thu, 27 Jul 2017 19:51:07 +0200 Nicolas Kovacs  wrote:

> Le 27/07/2017 à 19:25, wwp a écrit :
> > I've just got a Dell XPS 15 (9590) at work and need to set up a stable
> > GNU/Linux system on it. I thought of CentOS7, but.. obviously its
> > kernel can't run on this hardware.
> > 
> > What would you recommend? Waiting for CentOS8 is not an option unless
> > it's a question of few weeks. Are there respins of the CentOS7 DVDs w/
> > more top-recent kernels? I'm know of Fedora 26 or course, and not
> > willing to switch to Ubuntu 16.10 at all.  
> 
> Usually, I install CentOS 7 with KDE on all desktop computers, mine and
> those of my clients. This is my "standard" desktop installation.
> 
> https://blog.microlinux.fr/poste-de-travail-centos-7/
> 
> On more recent hardware, I usually try to run a kernel from ELRepo,
> either kernel-lt or kernel-ml. One the repo is configured:
> 
> # yum --enablerepo=elrepo-kernel install kernel-{lt,ml}
[snip]

I would like to do that, but the live CD doesn't even boot, unknown
hardware and that's the point. I thought I could find a respin of the
DVD or Live CD w/ a recent kernel in.


Regards,

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Re: [CentOS] What RH-like on a Dell XPS 15 (9590)?

[Matthew Miller]

On Thu, Jul 27, 2017 at 07:25:25PM +0200, wwp wrote:
> I've just got a Dell XPS 15 (9590) at work and need to set up a stable
> GNU/Linux system on it. I thought of CentOS7, but.. obviously its
> kernel can't run on this hardware.

What sense of the word "stable" are you looking for?


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Re: [CentOS] What RH-like on a Dell XPS 15 (9590)?

[wwp]

Hello Matthew,


On Thu, 27 Jul 2017 14:27:47 -0400 Matthew Miller  wrote:

> On Thu, Jul 27, 2017 at 07:25:25PM +0200, wwp wrote:
> > I've just got a Dell XPS 15 (9590) at work and need to set up a stable
> > GNU/Linux system on it. I thought of CentOS7, but.. obviously its
> > kernel can't run on this hardware.  
> 
> What sense of the word "stable" are you looking for?

It's a good question. When I wrote that, I was wondering what do I mean
saying "stable". Provided that it could be a top-recent kernel or a
respin, I guess that the stable concept is potentially gone.

Say, instead of stable, something not rawhide. But I'll examine all
options that do work, so let's forget about "stable".


Regards,

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Re: [CentOS] What RH-like on a Dell XPS 15 (9590)?

[m . roth]

wwp wrote:
>
> I've just got a Dell XPS 15 (9590) at work and need to set up a stable
> GNU/Linux system on it. I thought of CentOS7, but.. obviously its
> kernel can't run on this hardware.
>
> What would you recommend? Waiting for CentOS8 is not an option unless
> it's a question of few weeks. Are there respins of the CentOS7 DVDs w/
> more top-recent kernels? I'm know of Fedora 26 or course, and not
> willing to switch to Ubuntu 16.10 at all.
>
Hey, I just tried googling, and I cannot find a 9590, only 9550. You sure
of that?

Oh, and will it boot without UEFI from a flash drive?

  mark

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Re: [CentOS] What RH-like on a Dell XPS 15 (9590)?

[Matthew Miller]

On Thu, Jul 27, 2017 at 08:38:14PM +0200, wwp wrote:
> Say, instead of stable, something not rawhide. But I'll examine all
> options that do work, so let's forget about "stable".

In that case — and I freely admit I have some bias here — I highly
recommend Fedora. It's not stable in the sense of strict ABI
compliance, although we try to minimize disruption within the 13-month
life of a release, but it is stable in the "does not crash" sense.

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Re: [CentOS] What RH-like on a Dell XPS 15 (9590)?

[vychytraly .]

Did you already try current Centos? If yes what was the problem? Why it did
not work?

On Thu, Jul 27, 2017 at 9:59 PM, Matthew Miller  wrote:

> On Thu, Jul 27, 2017 at 08:38:14PM +0200, wwp wrote:
> > Say, instead of stable, something not rawhide. But I'll examine all
> > options that do work, so let's forget about "stable".
>
> In that case — and I freely admit I have some bias here — I highly
> recommend Fedora. It's not stable in the sense of strict ABI
> compliance, although we try to minimize disruption within the 13-month
> life of a release, but it is stable in the "does not crash" sense.
>
> --
> Matthew Miller
> 
> Fedora Project Leader
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Re: [CentOS] What RH-like on a Dell XPS 15 (9590)?

[wwp]

Hello vychytraly,


On Thu, 27 Jul 2017 22:02:18 +0200 "vychytraly ."  wrote:

> Did you already try current Centos? If yes what was the problem? Why it did
> not work?

It is as simple as unknown hardware at boot up, it's a well known issue
w/ *Lake hardware (modern hardware) that kernel 3.x cannot handle.
CentOS7 has a kernel which is simply not modern, unable to handle lots
of computers sold currently.

That said, there might be a way to boot, but nothing trivial and
nothing at all I could find on the Internet, everytime it's kernel
4.3/4.10 minimum required.


Regards,

> On Thu, Jul 27, 2017 at 9:59 PM, Matthew Miller  wrote:
> 
> > On Thu, Jul 27, 2017 at 08:38:14PM +0200, wwp wrote:  
> > > Say, instead of stable, something not rawhide. But I'll examine all
> > > options that do work, so let's forget about "stable".  
> >
> > In that case — and I freely admit I have some bias here — I highly
> > recommend Fedora. It's not stable in the sense of strict ABI
> > compliance, although we try to minimize disruption within the 13-month
> > life of a release, but it is stable in the "does not crash" sense.
> >
> > --
> > Matthew Miller
> > 
> > Fedora Project Leader
> > ___
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> > CentOS@centos.org
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> >  
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Re: [CentOS] What RH-like on a Dell XPS 15 (9590)?

[wwp]

Hello m.r...@5-cent.us,


On Thu, 27 Jul 2017 15:25:49 -0400 m.r...@5-cent.us wrote:

> wwp wrote:
> >
> > I've just got a Dell XPS 15 (9590) at work and need to set up a stable
> > GNU/Linux system on it. I thought of CentOS7, but.. obviously its
> > kernel can't run on this hardware.
> >
> > What would you recommend? Waiting for CentOS8 is not an option unless
> > it's a question of few weeks. Are there respins of the CentOS7 DVDs w/
> > more top-recent kernels? I'm know of Fedora 26 or course, and not
> > willing to switch to Ubuntu 16.10 at all.
> >  
> Hey, I just tried googling, and I cannot find a 9590, only 9550. You sure
> of that?

It's simply a typo: 9560. I've read of 9550 successful stories, but
none of 9560 yet.

 
> Oh, and will it boot without UEFI from a flash drive?

It's UEFI, I get the boot menu, but it won't go further.


Regards,

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Re: [CentOS] What RH-like on a Dell XPS 15 (9590)?

[Valeri Galtsev]

On Thu, July 27, 2017 3:02 pm, vychytraly . wrote:
> Did you already try current Centos? If yes what was the problem? Why it did
> not work?

I would first ask kindly: please, do not to post.

I would second that. Namely, I had quite a few Dell laptops, all of them
that were configured and purchased from Dell as Linux laptops (Dell
installs  latest Ubintu on them), were easily reinstalled with latest
CentOS, and I never had trouble doing that.

To OP: Once you do clean fresh installation of latest CentOS 7, and update
everything, please, report problems you have encountered. This list has
greatest experts: I know, I got help here multiple times.

Good luck!

Valeri

>
> On Thu, Jul 27, 2017 at 9:59 PM, Matthew Miller 
wrote:
>
>> On Thu, Jul 27, 2017 at 08:38:14PM +0200, wwp wrote:
>> > Say, instead of stable, something not rawhide. But I'll examine all
options that do work, so let's forget about "stable".
>> In that case — and I freely admit I have some bias here — I highly
recommend Fedora. It's not stable in the sense of strict ABI
>> compliance, although we try to minimize disruption within the 13-month
life of a release, but it is stable in the "does not crash" sense. --
>> Matthew Miller
>> 
>> Fedora Project Leader
>> ___
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>



Valeri Galtsev
Sr System Administrator
Department of Astronomy and Astrophysics
Kavli Institute for Cosmological Physics
University of Chicago
Phone: 773-702-4247





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Re: [CentOS] What RH-like on a Dell XPS 15 (9590)?

[wwp]

Hello Matthew,


On Thu, 27 Jul 2017 15:59:35 -0400 Matthew Miller  wrote:

> On Thu, Jul 27, 2017 at 08:38:14PM +0200, wwp wrote:
> > Say, instead of stable, something not rawhide. But I'll examine all
> > options that do work, so let's forget about "stable".  
> 
> In that case — and I freely admit I have some bias here — I highly
> recommend Fedora. It's not stable in the sense of strict ABI
> compliance, although we try to minimize disruption within the 13-month
> life of a release, but it is stable in the "does not crash" sense. 

Right, I'm currently digging that way, struggling a bit w/ the way I
write the F26 ISO to a USB flashdrive (I'll succeed tomorrow, found
better howtos to get rid of unetbootin issues).

Fedora could be stable enough even if not a standard/reference in
industry at all (which sticks to RH releases), I would have loved a
CentOS because it is way more compliant to my "corporate" needs (LTS),
but a Fedora could be do it, if it really does it, at least until
CentOS8 is out.


Regards,

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Re: [CentOS] What RH-like on a Dell XPS 15 (9590)?

[vychytraly .]

Maybe CentOS 7.4 would have backported compatibility for your hardware. I
had similar issues with Intel GPU not being recognized, which was solved by
"i915 preliminary hw support enabled" method. Try to have a look on that.

On Thu, Jul 27, 2017 at 10:24 PM, wwp  wrote:

> Hello Matthew,
>
>
> On Thu, 27 Jul 2017 15:59:35 -0400 Matthew Miller 
> wrote:
>
> > On Thu, Jul 27, 2017 at 08:38:14PM +0200, wwp wrote:
> > > Say, instead of stable, something not rawhide. But I'll examine all
> > > options that do work, so let's forget about "stable".
> >
> > In that case — and I freely admit I have some bias here — I highly
> > recommend Fedora. It's not stable in the sense of strict ABI
> > compliance, although we try to minimize disruption within the 13-month
> > life of a release, but it is stable in the "does not crash" sense.
>
> Right, I'm currently digging that way, struggling a bit w/ the way I
> write the F26 ISO to a USB flashdrive (I'll succeed tomorrow, found
> better howtos to get rid of unetbootin issues).
>
> Fedora could be stable enough even if not a standard/reference in
> industry at all (which sticks to RH releases), I would have loved a
> CentOS because it is way more compliant to my "corporate" needs (LTS),
> but a Fedora could be do it, if it really does it, at least until
> CentOS8 is out.
>
>
> Regards,
>
> --
> wwp
>
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Re: [CentOS] What RH-like on a Dell XPS 15 (9590)?

[Matthew Miller]

On Thu, Jul 27, 2017 at 10:24:29PM +0200, wwp wrote:
> Right, I'm currently digging that way, struggling a bit w/ the way I
> write the F26 ISO to a USB flashdrive (I'll succeed tomorrow, found
> better howtos to get rid of unetbootin issues).

I recommend using Fedora Media Writer 
https://github.com/MartinBriza/MediaWriter/releases over unetbootin;
our QA team reports that unetbootin just isn't guaranteed to do the
right thing.

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Re: [CentOS] What RH-like on a Dell XPS 15 (9590)?

[Rainer Duffner]

> Am 27.07.2017 um 22:48 schrieb vychytraly . :
> 
> Maybe CentOS 7.4 would have backported compatibility for your hardware. I
> had similar issues with Intel GPU not being recognized, which was solved by
> "i915 preliminary hw support enabled" method. Try to have a look on that.


https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7-Beta/html/7.4_Release_Notes/new_features_hardware_enablement.html
 



Well, the only thing that catches my eye here is the support for newer Intel 
PCHs.

Skylake (Purley) servers exist, so I would assume that RHEL would need to 
support these chipsets.

Wireless, GPUs etc - that’s something different.


Of course, there’s always SLES (or SLED, in the OPs case), which has a somewhat 
more recent kernel, AFAIK - if we’re playing „Anything but Ubuntu“.
;-)

The above beta came out in May. So I’d hazard a guess and say it’ll be late 
autumn before we see a release and I’d hope for a pre-christmas CentOS 7.4 
release….



Rainer
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Re: [CentOS] What RH-like on a Dell XPS 15 (9590)?

[Mike McCarthy, W1NR]

I would go with Fedora or OpenSUSE latest if you want RH like on that
hardware. There is nothing that unstable about them other than losing
updates and maintenance after 2 years and having to upgrade.

Another choice is to run Virtualbox on the Windows that shipped with the
laptop and run a CentOS 7 virtual guest.

If you REALLY need RHEL (CentOS) running on the hardware I would return
the XPS and get a Lattitude or Precision laptop. They have much better
Linux support as they tend to be more stability oriented rather than
latest and greatest hardware.

Mike

On 07/27/2017 01:25 PM, wwp wrote:
> Hello there,
>
>
> I've just got a Dell XPS 15 (9590) at work and need to set up a stable
> GNU/Linux system on it. I thought of CentOS7, but.. obviously its
> kernel can't run on this hardware.
>
> What would you recommend? Waiting for CentOS8 is not an option unless
> it's a question of few weeks. Are there respins of the CentOS7 DVDs w/
> more top-recent kernels? I'm know of Fedora 26 or course, and not
> willing to switch to Ubuntu 16.10 at all.
>
>
> Regards,
>
>
>
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Re: [CentOS] What RH-like on a Dell XPS 15 (9590)?

[Leroy Tennison]

And, if Ubuntu isn't pariah, even it's LTS has a reasonably current kernel.  
However, the "Debian way" (Debian, Ubuntu, others) is enough different than the 
"Red Hat way" (RHEL, CentOS, SuSE more or less) that, if it's important to you, 
stick with the RPM-based options.

- Original Message -
From: "Mike McCarthy, W1NR" 
To: "centos" 
Sent: Thursday, July 27, 2017 4:01:18 PM
Subject: Re: [CentOS] What RH-like on a Dell XPS 15 (9590)?

I would go with Fedora or OpenSUSE latest if you want RH like on that
hardware. There is nothing that unstable about them other than losing
updates and maintenance after 2 years and having to upgrade.

Another choice is to run Virtualbox on the Windows that shipped with the
laptop and run a CentOS 7 virtual guest.

If you REALLY need RHEL (CentOS) running on the hardware I would return
the XPS and get a Lattitude or Precision laptop. They have much better
Linux support as they tend to be more stability oriented rather than
latest and greatest hardware.

Mike

On 07/27/2017 01:25 PM, wwp wrote:
> Hello there,
>
>
> I've just got a Dell XPS 15 (9590) at work and need to set up a stable
> GNU/Linux system on it. I thought of CentOS7, but.. obviously its
> kernel can't run on this hardware.
>
> What would you recommend? Waiting for CentOS8 is not an option unless
> it's a question of few weeks. Are there respins of the CentOS7 DVDs w/
> more top-recent kernels? I'm know of Fedora 26 or course, and not
> willing to switch to Ubuntu 16.10 at all.
>
>
> Regards,
>
>
>
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Re: [CentOS] What RH-like on a Dell XPS 15 (9590)?

[Leon Fauster]

Am 27.07.2017 um 19:25 schrieb wwp :
> 
> I've just got a Dell XPS 15 (9590) at work and need to set up a stable
> GNU/Linux system on it. I thought of CentOS7, but.. obviously its
> kernel can't run on this hardware.
> 
> What would you recommend? Waiting for CentOS8 is not an option unless
> it's a question of few weeks. Are there respins of the CentOS7 DVDs w/
> more top-recent kernels? I'm know of Fedora 26 or course, and not
> willing to switch to Ubuntu 16.10 at all.


as addition to the other comments I would suggest to 
report it on RH's bugzilla. So they get awareness ...

 https://bugzilla.redhat.com/

--
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Re: [CentOS] What RH-like on a Dell XPS 15 (9590)?

[Kahlil Hodgson]

I have a Dell XPS 13 (9360) with Fedora 26 installed. Very happy with it.

UEFI boot from flash drive works out of the box.

For install I needed to change the drive settings in the BIOS from the
default of RAID (what ever that means on a laptop) to AHCI. No need to
turn off secure boot.

If you want to use a DisplayLink USB display adaptor like the D3100
(commonly sold with this laptop), you might want to checkout
https://github.com/displaylink-rpm. This will require either you to
turn off secure boot or to sign the displaylink modules after they are
installed. Signing is not that hard, but is a extra step that you have
to look after.

Cheers,

Kal
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[CentOS] firewalld and LISTEN

[望月忠雄]

On CentOS7 I have following firewalld setting.

external (active)
  target: default
  icmp-block-inversion: no
  interfaces: eth0
  sources:
  services: dns ftp http https imaps pop3s smtp ssh
  ports: 110/tcp 21/tcp 2/tcp 106/tcp 53/tcp 990/tcp 5432/tcp 8447/tcp
113/tcp 143/tcp 3306/tcp 5224/tcp 22/tcp 465/tcp 995/tcp 25/tcp 1/tcp
8443/tcp 993/tcp 443/tcp 8880/tcp 587/tcp 20/tcp 53/udp 12768/tcp
  protocols:
  masquerade: yes
  forward-ports:
  sourceports:
  icmp-blocks:
  rich rules:

But by ss -nat, IPV4 443 is not listend. How can I fix?

# ss -nat | grep LISTEN | grep 443
LISTEN 0  128 :::443 :::*

Tadao
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Re: [CentOS] firewalld and LISTEN

[Jonathan Billings]

On Jul 27, 2017, at 9:36 PM, 望月忠雄  wrote:
> 
> On CentOS7 I have following firewalld setting.
> 
> external (active)
>  target: default
>  icmp-block-inversion: no
>  interfaces: eth0
>  sources:
>  services: dns ftp http https imaps pop3s smtp ssh
>  ports: 110/tcp 21/tcp 2/tcp 106/tcp 53/tcp 990/tcp 5432/tcp 8447/tcp
> 113/tcp 143/tcp 3306/tcp 5224/tcp 22/tcp 465/tcp 995/tcp 25/tcp 1/tcp
> 8443/tcp 993/tcp 443/tcp 8880/tcp 587/tcp 20/tcp 53/udp 12768/tcp
>  protocols:
>  masquerade: yes
>  forward-ports:
>  sourceports:
>  icmp-blocks:
>  rich rules:
> 
> But by ss -nat, IPV4 443 is not listend. How can I fix?
> 
> # ss -nat | grep LISTEN | grep 443
> LISTEN 0  128 :::443 :::*

Just because the firewall is open doesn’t mean the process listening on port 
443 has to be running.  It looks like your HTTPD server (I assume apache 
httpd?) isn’t listening on ipv4.  This is not a firewall problem, but a 
configuration problem for the web server.

--
Jonathan Billings 


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Re: [CentOS] firewalld and LISTEN

[望月忠雄]

Dear Jonathan,

Thank you.

Apache is running. And I can access by https(IPV4 443).
Please tell me which configuration I need to check.

Tadao


2017-07-28 10:52 GMT+09:00 Jonathan Billings :

> On Jul 27, 2017, at 9:36 PM, 望月忠雄  wrote:
> >
> > On CentOS7 I have following firewalld setting.
> >
> > external (active)
> >  target: default
> >  icmp-block-inversion: no
> >  interfaces: eth0
> >  sources:
> >  services: dns ftp http https imaps pop3s smtp ssh
> >  ports: 110/tcp 21/tcp 2/tcp 106/tcp 53/tcp 990/tcp 5432/tcp 8447/tcp
> > 113/tcp 143/tcp 3306/tcp 5224/tcp 22/tcp 465/tcp 995/tcp 25/tcp 1/tcp
> > 8443/tcp 993/tcp 443/tcp 8880/tcp 587/tcp 20/tcp 53/udp 12768/tcp
> >  protocols:
> >  masquerade: yes
> >  forward-ports:
> >  sourceports:
> >  icmp-blocks:
> >  rich rules:
> >
> > But by ss -nat, IPV4 443 is not listend. How can I fix?
> >
> > # ss -nat | grep LISTEN | grep 443
> > LISTEN 0  128 :::443 :::*
>
> Just because the firewall is open doesn’t mean the process listening on
> port 443 has to be running.  It looks like your HTTPD server (I assume
> apache httpd?) isn’t listening on ipv4.  This is not a firewall problem,
> but a configuration problem for the web server.
>
> --
> Jonathan Billings 
>
>
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Re: [CentOS] firewalld and LISTEN

[Gordon Messmer]

On 07/27/2017 06:36 PM, 望月忠雄 wrote:

But by ss -nat, IPV4 443 is not listend. How can I fix?

# ss -nat | grep LISTEN | grep 443
LISTEN 0  128 :::443 :::*



By default, Linux processes that listen on an IPv6 port will also listen 
on the IPv4 port (when no specific address is specified):


http://man7.org/linux/man-pages/man7/ipv6.7.html

You could change that behavior by modifying 
/proc/sys/net/ipv6/bindv6only, but your system is working normally now.


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