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a couple rpi problems

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  a couple rpi problems ghe2001 <ghe2001@pm.me> - 2024-03-05 01:00 +0100
    Re: a couple rpi problems Greg Wooledge <greg@wooledge.org> - 2024-03-05 01:10 +0100
      Re: a couple rpi problems ghe2001 <ghe2001@protonmail.com> - 2024-03-05 01:20 +0100
        Re: a couple rpi problems Jeffrey Walton <noloader@gmail.com> - 2024-03-05 05:30 +0100
          Re: a couple rpi problems ghe2001 <ghe2001@protonmail.com> - 2024-03-05 05:50 +0100
    Re: a couple rpi problems Mike McClain <mike.junk.46@att.net> - 2024-03-05 20:40 +0100

#268038 — a couple rpi problems

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rpi5 and 4, standard Debian clone OS

1) The 5, pi5.slsware.lan, keeps sending me email saying, 

"*** SECURITY information for pi5 ***" 

and 

"pi5 : Mar  4 15:40:14 : root : unable to resolve host pi5: Name or service not known"

I have no idea why it's complaining or what's bent.  


2) On both the 4 and 5, 'needrestart' says I'm running on an old kernel and tells me that a reboot will start the newer version.  But it's just kidding -- I reboot and I get the same message again.  The 4's been doing that for a long time, and I've just let it keep running the old kernel because I'm afraid I might break something if I try to delete the old kernel.  But I just got the 5 a few days ago, it's doing the same thing, and I'd like to get this dealt with.

IIRC (I'm 81, and that's no longer a given), I never saw this with the rpi2s or 3s or the real Debian boxen. 

Any thoughts/suggestions would be appreciated...

--
Glenn English
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#268039

On Mon, Mar 04, 2024 at 11:41:07PM +0000, ghe2001 wrote:
> 1) The 5, pi5.slsware.lan, keeps sending me email saying, 
> 
> "*** SECURITY information for pi5 ***" 

So, "pi5" appears to be your hostname.

> "pi5 : Mar  4 15:40:14 : root : unable to resolve host pi5: Name or service not known"
> 
> I have no idea why it's complaining or what's bent.  

It can't resolve its own hostname.  You're probably missing a line in
your /etc/hosts file.

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#268041

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On Monday, March 4th, 2024 at 5:01 PM, Greg Wooledge <greg@wooledge.org> wrote:

> On Mon, Mar 04, 2024 at 11:41:07PM +0000, ghe2001 wrote:
> 
> > 1) The 5, pi5.slsware.lan, keeps sending me email saying,
> > 
> > "*** SECURITY information for pi5 ***"
> 
> 
> So, "pi5" appears to be your hostname.

Yup.

> It can't resolve its own hostname. You're probably missing a line in
> your /etc/hosts file.

Oh!  It wants the IP!  You're right -- pi5 isn't in there.  Thanks.

--
Glenn English

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#268051

On Mon, Mar 4, 2024 at 11:07 PM ghe2001 <ghe2001@protonmail.com> wrote:
>
> On Monday, March 4th, 2024 at 5:01 PM, Greg Wooledge <greg@wooledge.org> wrote:
> [...]
> > So, "pi5" appears to be your hostname.
>
> Yup.
>
> > It can't resolve its own hostname. You're probably missing a line in
> > your /etc/hosts file.
>
> Oh!  It wants the IP!  You're right -- pi5 isn't in there.  Thanks.

Here's what one looks like for a host named 'raptor' after the Intel ISA:

$ cat /etc/hosts
# Loopback entries; do not change.
# For historical reasons, localhost precedes localhost.localdomain:
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4

# 127.0.1.1 is often used for the FQDN of the machine
127.0.1.1   raptor.home.arpa raptor

# The following lines are desirable for IPv6 capable hosts
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

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#268052

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On Monday, March 4th, 2024 at 9:26 PM, Jeffrey Walton <noloader@gmail.com> wrote:

> Here's what one looks like for a host named 'raptor' after the Intel ISA:

Yeah, I put it in there when I understood what it was looking for.  When I went to computer school, there was no Internet or IP anything, so I didn't know that "resolve" meant "what's your IP address" (I hit vi real quick to add an IP to hosts -- everybody seems to be happy with their resolution now).

Any thoughts on my kernel replacement notice problem?

--
Glenn English

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#268074

On Mon, Mar 04, 2024 at 11:41:07PM +0000, ghe2001 wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> rpi5 and 4, standard Debian clone OS
>
> 1) The 5, pi5.slsware.lan, keeps sending me email saying,
> "*** SECURITY information for pi5 ***"
> and
> "pi5 : Mar  4 15:40:14 : root : unable to resolve host pi5: Name or service not known"
> I have no idea why it's complaining or what's bent.

mike@DevuanPI4b:~> cat /etc/hostname
MikesDevuanPI
mike@DevuanPI4b:~> cat /etc/hosts
    <snip>
127.0.0.1       MikesDevuanPI
    <snip>

> 2) On both the 4 and 5, 'needrestart' says I'm running on an old kernel and tells me that a reboot will start the newer version.  But it's just kidding -- I reboot and I get the same message again.  The 4's been doing that for a long time, and I've just let it keep running the old kernel because I'm afraid I might break something if I try to delete the old kernel.  But I just got the 5 a few days ago, it's doing the same thing, and I'd like to get this dealt with.

I've never seen that either and have 2 RPI4bs running Devuan daedalus on this one,
Rasbian bookworm on the other.

I assume you ran apt update & apt upgrade before reboot.

One thing I have noticed is that reboot and 'shutdown -h now'
then toggling the power, don't always give the same results.

> --
> Glenn English

Be well,
Mike
--
    For more information, please reread.

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