I'll clarify a bit: the Backup.sock and LOCK file deletions were a long
shot that just happened to work. I noticed that those files were there with
the service stopped, and my suspicion / reasoning was that perhaps backuppc
was having trouble generating the socket because those represented a hung /
locked / otherwise old session. Deleting them worked a couple times (stop
service, delete, start service) but that seems to have stopped working as
well.
I will check NFS version, perhaps the NAS has started defaulting to v4, but
I can't be sure. In the past, mounting without nock on a synology NAS (I've
gone through a couple, issue happened on an old WD nas as well) would cause
a load average spike that would make Backuppc appear unstable, so my
default for many years has been nolock.
~Phil
On Sun, Jun 28, 2020, 6:45 PM Craig Barratt via BackupPC-users <
backuppc-users@lists.sourceforge.net> wrote:
> The CGI script is trying to connect to the BackupPC server using the
> unix-domain socket, which is at $Conf{LogDir}/BackupPC.sock. From your
> email, on your system that appears to be /var/lib/log/BackupPC.sock.
>
> Are you running nfs v3 or v4? I have had experience with v3 not working
> reliably with BackupPC (related to buggy lock file behaviour). BackupPC
> does rely on lock files working, so it's definitely not recommended to turn
> locking off.
>
> You said you deleted the BackupPC.sock file. That would explain why the
> CGI script can't connect to the server. Why did you delete it? You said
> "deleting
> those files doesn't always let the service restart" - deleting those files
> should not be used to get the server to restart.
>
> Craig
>
> On Sat, Jun 27, 2020 at 9:26 AM Phil Kennedy <
> phillip.kenn...@yankeeairmuseum.org> wrote:
>
>> I've hit my wits end on an issue with my backuppc instance. The system
>> ran fine, untouched, for many months. This is an ubuntu 16.0.4 system,
>> running backuppc 3.3.1, installed via apt. When accessing the index (or any
>> other pages), I get the following:
>> Error: Unable to connect to BackupPC server
>> This CGI script (/backuppc/index.cgi) is unable to connect to the
>> BackupPC server on pirate port -1.
>> The error was: unix connect: Connection refused.
>> Perhaps the BackupPC server is not running or there is a configuration
>> error. Please report this to your Sys Admin.
>>
>> The backuppc & apache services are running, and restarting without error.
>> The backuppc pool (and other important folders, such as log) lives on an
>> NFS mount, and /var/lib/backuppc is symlinked to /mnt/backup. Below is the
>> fstab entry that I use:
>>
>> 10.0.0.4:/backup /mnt/backup nfs users,auto,nolock,rw 0 0
>>
>> (I'm specifically using nolock, since that can cause a similar issue.
>> Mounting an NFS mount via some of the off the shelf NAS's out there can
>> have performance issues without nolock set.)
>>
>> I've been able to get the instance to start and run briefly by deleting
>> the BackupPC.sock and LOCK files from /var/lib/log, but the instance
>> doesn't stay running for very long (minutes to an hour or two), and the LOG
>> isn't giving me much data. On top of that, deleting those files doesn't
>> always let the service restart. Thoughts? This box lives a pretty stagnent
>> life, nothing tends to change configuration-wise.
>> ~Phil
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>> List: https://lists.sourceforge.net/lists/listinfo/backuppc-users
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>>
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