[gentoo-user] Questions about systemd logging

[gentoo-user] Questions about systemd logging

[Robin Atwood]

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I have temporarily shelved my problem with mounting since my work-around seems 
adequate. But I have some questions about logging. Journald works fine but 
what am I supposed to see on the main console? All I can see is a few kernel 
messages which cease after the lvm service completes. There are no service 
starting messages and no login prompt appears. The other ttys have a banner 
and prompt as usual.

Secondly I want to merge the journal into syslog-ng for post-processing. I 
have the correct syslog-ng service defined and syslog-ng.conf has been 
modified to use /run/systemd/journald/syslog as a source unix-stream. But I 
see no systemd messages appearing. In the Gentoo package all the journald.conf 
statements are commented out, which ones are necessary to do what I want. I 
have tried the "logging_to_syslog/kmsg" options but to no effect, but there 
are many!

TIA
-Robin
-- 
----------------------------------------------------------------------
Robin Atwood.

"Ship me somewheres east of Suez, where the best is like the worst,
 Where there ain't no Ten Commandments an' a man can raise a thirst"
         from "Mandalay" by Rudyard Kipling
----------------------------------------------------------------------









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Re: [gentoo-user] Questions about systemd logging

[Canek Peláez Valdés]

On Wed, Jan 9, 2013 at 5:12 AM, Robin Atwood <robin.atwood@attglobal.net> wrote:
> I have temporarily shelved my problem with mounting since my work-around
> seems adequate. But I have some questions about logging. Journald works fine
> but what am I supposed to see on the main console?

What do you mean by "main console"? tty1? tty12? /dev/console?

> All I can see is a few
> kernel messages which cease after the lvm service completes. There are no
> service starting messages and no login prompt appears. The other ttys have a
> banner and prompt as usual.

systemd by default only spawns 1 (one) tty, tty1:

$ ls /etc/systemd/system/getty.target.wants/
getty@tty1.service

That's the only login prompt spawned by default. The other virtual
consoles get spawned automatically if you switch to them. In other
words, if you never switch to the virtual console 2, there is no login
prompt there. It will appear until you switch to it. systemd should
switch to tty1 and launch getty@tty1.service automatically when the
getty.target is reached in the boot process.

I'm not really sure what the problem is; if you are concerned by the
"[ OK ]" messages when booting, it is possible that systemd is so fast
that you have no chance to see them (that happens in my laptop with a
solid state harddrive). Also, if you have a splash (like plymouth),
the whole point of the splash is that you don't see said messages. You
can see a copy of the "boot log" in /var/log/boot.log; that it's what
you are supposed to see when booting, but if you have a splash you
won't, or maybe it will be so fast that you will miss it.

> Secondly I want to merge the journal into syslog-ng for post-processing. I
> have the correct syslog-ng service defined and syslog-ng.conf has been
> modified to use /run/systemd/journald/syslog as a source unix-stream. But I
> see no systemd messages appearing. In the Gentoo package all the
> journald.conf statements are commented out, which ones are necessary to do
> what I want. I have tried the "logging_to_syslog/kmsg" options but to no
> effect, but there are many!

I switched from syslog-ng to rsyslog around three years ago, and
exclusively to the journal some months ago, so this is from memory:

1. You need to link your syslog service unit to
/etc/systemd/system/syslog.service; for example:

/etc/systemd/system/syslog.service -> /usr/lib/systemd/system/syslog-ng.service

2. You need to set LogTarget=syslog (or LogTarget=syslog-or-kmsg) in
/etc/systemd/system.conf. You are configuring *systemd* to use a third
party syslog; you don't need to configure the journal itself.

man 5 systemd.conf
man 1 systemd

If I recall correctly, that's it. systemd automatically will buffer
the early boot messages until your preferred syslog service start, and
from that point on it will send the logs to it immediately.

Hope it helps.

Regards.
-- 
Canek Peláez Valdés
Posgrado en Ciencia e Ingeniería de la Computación
Universidad Nacional Autónoma de México

Re: [gentoo-user] Questions about systemd logging

[Robin Atwood]

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On Thursday 10 January 2013, Canek Peláez Valdés wrote:
> On Wed, Jan 9, 2013 at 5:12 AM, Robin Atwood <robin.atwood@attglobal.net> 
wrote:
> > I have temporarily shelved my problem with mounting since my work-around
> > seems adequate. But I have some questions about logging. Journald works
> > fine but what am I supposed to see on the main console?
> 
> What do you mean by "main console"? tty1? tty12? /dev/console?
> 
> > All I can see is a few
> > kernel messages which cease after the lvm service completes. There are no
> > service starting messages and no login prompt appears. The other ttys
> > have a banner and prompt as usual.
> 
> systemd by default only spawns 1 (one) tty, tty1:
> 
> $ ls /etc/systemd/system/getty.target.wants/
> getty@tty1.service
> 
> That's the only login prompt spawned by default. The other virtual
> consoles get spawned automatically if you switch to them. In other
> words, if you never switch to the virtual console 2, there is no login
> prompt there. It will appear until you switch to it. systemd should
> switch to tty1 and launch getty@tty1.service automatically when the
> getty.target is reached in the boot process.
> 
> I'm not really sure what the problem is; if you are concerned by the
> "[ OK ]" messages when booting, it is possible that systemd is so fast
> that you have no chance to see them (that happens in my laptop with a
> solid state harddrive). Also, if you have a splash (like plymouth),
> the whole point of the splash is that you don't see said messages. You
> can see a copy of the "boot log" in /var/log/boot.log; that it's what
> you are supposed to see when booting, but if you have a splash you
> won't, or maybe it will be so fast that you will miss it.
> 
> > Secondly I want to merge the journal into syslog-ng for post-processing.
> > I have the correct syslog-ng service defined and syslog-ng.conf has been
> > modified to use /run/systemd/journald/syslog as a source unix-stream.
> > But I see no systemd messages appearing. In the Gentoo package all the
> > journald.conf statements are commented out, which ones are necessary to
> > do what I want. I have tried the "logging_to_syslog/kmsg" options but to
> > no effect, but there are many!
> 
> I switched from syslog-ng to rsyslog around three years ago, and
> exclusively to the journal some months ago, so this is from memory:
> 
> 1. You need to link your syslog service unit to
> /etc/systemd/system/syslog.service; for example:
> 
> /etc/systemd/system/syslog.service ->
> /usr/lib/systemd/system/syslog-ng.service
> 
> 2. You need to set LogTarget=syslog (or LogTarget=syslog-or-kmsg) in
> /etc/systemd/system.conf. You are configuring *systemd* to use a third
> party syslog; you don't need to configure the journal itself.
> 
> man 5 systemd.conf
> man 1 systemd
> 
> If I recall correctly, that's it. systemd automatically will buffer
> the early boot messages until your preferred syslog service start, and
> from that point on it will send the logs to it immediately.

Thanks for the tips, now I can get more output to tty1 if I want. I still 
can't get any systemd messages to syslog-ng, however. A bit of a mystery. 

Cheers
-Robin
-- 
----------------------------------------------------------------------
Robin Atwood.

"Ship me somewheres east of Suez, where the best is like the worst,
 Where there ain't no Ten Commandments an' a man can raise a thirst"
         from "Mandalay" by Rudyard Kipling
----------------------------------------------------------------------









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Re: [Bulk] Re: [gentoo-user] Questions about systemd logging

[Kevin Chadwick]

On Thu, 10 Jan 2013 23:46:29 +0700
Robin Atwood <robin.atwood@attglobal.net> wrote:

> Thanks for the tips, now I can get more output to tty1 if I want. I
> still can't get any systemd messages to syslog-ng, however. A bit of
> a mystery. 

This may be way off as I expect systemd to never shape up to a point
that I will use it, but with a bit of luck this may point you in the
right direction. On Arch systemd avoiders had to change their
syslog-ng.conf to the following to get their logging back.

source src {
	unix-dgram("/dev/log");
	internal();
	file("/proc/kmsg");
};

Re: [Bulk] Re: [gentoo-user] Questions about systemd logging

[Robin Atwood]

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On Friday 11 January 2013, Kevin Chadwick wrote:
> On Thu, 10 Jan 2013 23:46:29 +0700
> 
> Robin Atwood <robin.atwood@attglobal.net> wrote:
> > Thanks for the tips, now I can get more output to tty1 if I want. I
> > still can't get any systemd messages to syslog-ng, however. A bit of
> > a mystery.
> 
> This may be way off as I expect systemd to never shape up to a point
> that I will use it, but with a bit of luck this may point you in the
> right direction. On Arch systemd avoiders had to change their
> syslog-ng.conf to the following to get their logging back.
> 
> source src {
> 	unix-dgram("/dev/log");
> 	internal();
> 	file("/proc/kmsg");
> };

I already have that! It's the systemd source that seems to have run dry.

Cheers
-Robin
-- 
----------------------------------------------------------------------
Robin Atwood.

"Ship me somewheres east of Suez, where the best is like the worst,
 Where there ain't no Ten Commandments an' a man can raise a thirst"
         from "Mandalay" by Rudyard Kipling
----------------------------------------------------------------------









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Re: [gentoo-user] Questions about systemd logging

[Canek Peláez Valdés]

On Thu, Jan 10, 2013 at 10:46 AM, Robin Atwood
<robin.atwood@attglobal.net> wrote:
> On Thursday 10 January 2013, Canek Peláez Valdés wrote:
>
>> On Wed, Jan 9, 2013 at 5:12 AM, Robin Atwood <robin.atwood@attglobal.net>
>> wrote:
>
>> > I have temporarily shelved my problem with mounting since my work-around
>
>> > seems adequate. But I have some questions about logging. Journald works
>
>> > fine but what am I supposed to see on the main console?
>
>>
>
>> What do you mean by "main console"? tty1? tty12? /dev/console?
>
>>
>
>> > All I can see is a few
>
>> > kernel messages which cease after the lvm service completes. There are
>> > no
>
>> > service starting messages and no login prompt appears. The other ttys
>
>> > have a banner and prompt as usual.
>
>>
>
>> systemd by default only spawns 1 (one) tty, tty1:
>
>>
>
>> $ ls /etc/systemd/system/getty.target.wants/
>
>> getty@tty1.service
>
>>
>
>> That's the only login prompt spawned by default. The other virtual
>
>> consoles get spawned automatically if you switch to them. In other
>
>> words, if you never switch to the virtual console 2, there is no login
>
>> prompt there. It will appear until you switch to it. systemd should
>
>> switch to tty1 and launch getty@tty1.service automatically when the
>
>> getty.target is reached in the boot process.
>
>>
>
>> I'm not really sure what the problem is; if you are concerned by the
>
>> "[ OK ]" messages when booting, it is possible that systemd is so fast
>
>> that you have no chance to see them (that happens in my laptop with a
>
>> solid state harddrive). Also, if you have a splash (like plymouth),
>
>> the whole point of the splash is that you don't see said messages. You
>
>> can see a copy of the "boot log" in /var/log/boot.log; that it's what
>
>> you are supposed to see when booting, but if you have a splash you
>
>> won't, or maybe it will be so fast that you will miss it.
>
>>
>
>> > Secondly I want to merge the journal into syslog-ng for post-processing.
>
>> > I have the correct syslog-ng service defined and syslog-ng.conf has been
>
>> > modified to use /run/systemd/journald/syslog as a source unix-stream.
>
>> > But I see no systemd messages appearing. In the Gentoo package all the
>
>> > journald.conf statements are commented out, which ones are necessary to
>
>> > do what I want. I have tried the "logging_to_syslog/kmsg" options but to
>
>> > no effect, but there are many!
>
>>
>
>> I switched from syslog-ng to rsyslog around three years ago, and
>
>> exclusively to the journal some months ago, so this is from memory:
>
>>
>
>> 1. You need to link your syslog service unit to
>
>> /etc/systemd/system/syslog.service; for example:
>
>>
>
>> /etc/systemd/system/syslog.service ->
>
>> /usr/lib/systemd/system/syslog-ng.service
>
>>
>
>> 2. You need to set LogTarget=syslog (or LogTarget=syslog-or-kmsg) in
>
>> /etc/systemd/system.conf. You are configuring *systemd* to use a third
>
>> party syslog; you don't need to configure the journal itself.
>
>>
>
>> man 5 systemd.conf
>
>> man 1 systemd
>
>>
>
>> If I recall correctly, that's it. systemd automatically will buffer
>
>> the early boot messages until your preferred syslog service start, and
>
>> from that point on it will send the logs to it immediately.
>
>
>
> Thanks for the tips, now I can get more output to tty1 if I want. I still
> can't get any systemd messages to syslog-ng, however. A bit of a mystery.

Stupid question, the syslog-ng.service is running correctly? What does
the following command say:

systemctl status syslog-ng.service

Regards.
-- 
Canek Peláez Valdés
Posgrado en Ciencia e Ingeniería de la Computación
Universidad Nacional Autónoma de México

Re: [gentoo-user] Questions about systemd logging

[Robin Atwood]

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On Friday 11 January 2013, Canek Peláez Valdés wrote:
> On Thu, Jan 10, 2013 at 10:46 AM, Robin Atwood
> 
> <robin.atwood@attglobal.net> wrote:
> > On Thursday 10 January 2013, Canek Peláez Valdés wrote:
> >> On Wed, Jan 9, 2013 at 5:12 AM, Robin Atwood
> >> <robin.atwood@attglobal.net>
> >> 
> >> wrote:
> 
> Stupid question, the syslog-ng.service is running correctly? What does
> the following command say:
> 
> systemctl status syslog-ng.service

Syslog-ng is running fine, I get all my normal logging, just none from 
systemd. If I can get I don't have to mess around with journalctl.

-Robin

-- 
----------------------------------------------------------------------
Robin Atwood.

"Ship me somewheres east of Suez, where the best is like the worst,
 Where there ain't no Ten Commandments an' a man can raise a thirst"
         from "Mandalay" by Rudyard Kipling
----------------------------------------------------------------------









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Re: [gentoo-user] Questions about systemd logging

[Canek Peláez Valdés]

On Sat, Jan 12, 2013 at 8:31 AM, Robin Atwood
<robin.atwood@attglobal.net> wrote:
> On Friday 11 January 2013, Canek Peláez Valdés wrote:
>
>> On Thu, Jan 10, 2013 at 10:46 AM, Robin Atwood
>
>>
>
>> <robin.atwood@attglobal.net> wrote:
>
>> > On Thursday 10 January 2013, Canek Peláez Valdés wrote:
>
>> >> On Wed, Jan 9, 2013 at 5:12 AM, Robin Atwood
>
>> >> <robin.atwood@attglobal.net>
>
>> >>
>
>> >> wrote:
>
>>
>
>> Stupid question, the syslog-ng.service is running correctly? What does
>
>> the following command say:
>
>>
>
>> systemctl status syslog-ng.service
>
>
>
> Syslog-ng is running fine, I get all my normal logging, just none from
> systemd. If I can get I don't have to mess around with journalctl.

What is the value of LogTarget in your /etc/systemd/system.conf?

Regards.
-- 
Canek Peláez Valdés
Posgrado en Ciencia e Ingeniería de la Computación
Universidad Nacional Autónoma de México