Re: [BackupPC-users] Sending output of DumpPreUserCmd by email

2017-05-19 Thread Vladislav Kurz 
On 05/18/17 17:30, Richard Shaw wrote:
> On Thu, May 18, 2017 at 9:49 AM, Vladislav Kurz
> > wrote:
> 
> Hello all,
> 
> First of all big thanks to all developers of BackupPC, it is really a
> very nice and useful backup tool.
> 
> I use DumpPreUserCmd (and similar options) to run mysqldump, or make
> snapshots of filesystems before backup. I would like to have the output
> of these mailed to me instead of being just logged.
> 
> 
> Probably not the direction you were thinking but why not create a
> systemd service file for DumpPreUserCmd to start?
> 
> I'm assuming you're using a system which uses systemd...

Hello,

I have many systems, and most of them are older then systemd (so using
classic init). And on those that do, I'm sometimes pulling my hair out
because of systemd. But I do not want to rant about systemd here. I know
I have to learn new things all my life.

> If you prepend the command in the service file with a hyphen the unit
> will exit cleanly even if the command failed...
> 
> ExecStart=-/command/to/run

This is not exactly what I want. I can ignore the failure by setting
backuppc: UserCmdCheckStatus=0

What I want is to get any output of the script by mail. Whether it fails
or not.

I thought it would be more elegant if this could be done by backuppc
itself than adding something like "2>&1 | mail root" to all predump scripts.

-- 
S pozdravem
Vladislav Kurz

Centrála: Celní 17/5, 63900 Brno, CZ
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Re: [BackupPC-users] Sending output of DumpPreUserCmd by email

2017-05-18 Thread Craig Barratt 
You need DumpPreUserCmd to run to completion before continuing with the
backup.  Using systemd will run the command in the background (I believe
even for oneshot), which is almost certainly not what you want to do.

An easier solution is to write a cover script (pick you favorite scripting
language - bash, python, perl etc) that runs mysqldump, emails whatever you
want etc, and then point DumpPreUserCmd at your script.

Craig

On Thu, May 18, 2017 at 8:30 AM, Richard Shaw  wrote:

> On Thu, May 18, 2017 at 9:49 AM, Vladislav Kurz <
> vladislav.k...@webstep.net> wrote:
>
>> Hello all,
>>
>> First of all big thanks to all developers of BackupPC, it is really a
>> very nice and useful backup tool.
>>
>> I use DumpPreUserCmd (and similar options) to run mysqldump, or make
>> snapshots of filesystems before backup. I would like to have the output
>> of these mailed to me instead of being just logged.
>
>
> Probably not the direction you were thinking but why not create a systemd
> service file for DumpPreUserCmd to start?
>
> I'm assuming you're using a system which uses systemd...
>
> If you prepend the command in the service file with a hyphen the unit will
> exit cleanly even if the command failed...
>
> ExecStart=-/command/to/run
>
> Then you would set your DumpPreUserCmd to "/usr/bin/systemctl start
> "
>
> You would want to set the unit type to "oneshot" so it doesn't return
> until the command is finished.
>
> Just a thought.
>
> Thanks,
> Richard
>
> 
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>
>
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Re: [BackupPC-users] Sending output of DumpPreUserCmd by email

2017-05-18 Thread Richard Shaw 
On Thu, May 18, 2017 at 9:49 AM, Vladislav Kurz 
wrote:

> Hello all,
>
> First of all big thanks to all developers of BackupPC, it is really a
> very nice and useful backup tool.
>
> I use DumpPreUserCmd (and similar options) to run mysqldump, or make
> snapshots of filesystems before backup. I would like to have the output
> of these mailed to me instead of being just logged.


Probably not the direction you were thinking but why not create a systemd
service file for DumpPreUserCmd to start?

I'm assuming you're using a system which uses systemd...

If you prepend the command in the service file with a hyphen the unit will
exit cleanly even if the command failed...

ExecStart=-/command/to/run

Then you would set your DumpPreUserCmd to "/usr/bin/systemctl start "

You would want to set the unit type to "oneshot" so it doesn't return until
the command is finished.

Just a thought.

Thanks,
Richard
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[BackupPC-users] Sending output of DumpPreUserCmd by email

2017-05-18 Thread Vladislav Kurz 
Hello all,

First of all big thanks to all developers of BackupPC, it is really a
very nice and useful backup tool.

I use DumpPreUserCmd (and similar options) to run mysqldump, or make
snapshots of filesystems before backup. I would like to have the output
of these mailed to me instead of being just logged.

I know that there is UserCmdCheckStatus, but that only makes the whole
backup fail, which is not always what I want. If mysql dump fails, I
want the backup to run anyway, and backup at least the rest of the
filesystem, but I want to be notified that something went wrong.

I think of the same behavior as with cron: send mail if there is any
output (stdout or stderr), or if the command fails (exit code != 0).

Is that possible now? If not could this be impemented in future versions?

-- 
Best Regards
Vladislav Kurz


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