Re: [mosquitto-dev] save mosquitto.db for running instance if persistanc

[John Harrison <john@xxxxxxxxxxx>]

I am already using a config file but I just tried this and it doesn't seem to be working for me. I changed the line in the config file from
persistence false

to
persistence true

then found the PID of the mosquitto service and sent it:
sudo kill -SIGUSR1 MOSQUITTO_PID

the log file shows:
Error in poll: Interrupted system call.

and no mosquitto.db was written.

I know my settings are OK because I then stopped and restarted the mosquitto service. With the new setting of persistence in the config file a mosquitto.db file was created when the service was stopped.

mosquitto version 1.4.9 (build date Fri, 17 Jun 2016 15:43:08 +0100)

This was all done on a test service. I have a prod service on another server and that's the one I am concerned about.

-John

On Sat, Apr 30, 2016 at 4:40 PM, Roger Light <roger@xxxxxxxxxx> wrote:

Hi John,

If you're using a config file already, then changing the config file
to include "persistence true" and sending a signal SIGUSR1 should do
the job.

If you're not using a config file then your only hope is to modify
db->config->persistence to be non-zero using a debugger. I've not
tried it, but it should work - although you'd need debug symbols.

Cheers,

Roger



On Sat, Apr 30, 2016 at 4:47 PM, John Harrison <john@xxxxxxxxxxx> wrote:
> Is there any way to save the mosquitto.db configuration for a running
> instance of mosquitto where persistence was set to false?
>
>
> _______________________________________________
> mosquitto-dev mailing list
> mosquitto-dev@xxxxxxxxxxx
> To change your delivery options, retrieve your password, or unsubscribe from
> this list, visit
> https://dev.eclipse.org/mailman/listinfo/mosquitto-dev
_______________________________________________
mosquitto-dev mailing list
mosquitto-dev@xxxxxxxxxxx
To change your delivery options, retrieve your password, or unsubscribe from this list, visit
https://dev.eclipse.org/mailman/listinfo/mosquitto-dev

--

John @ filimin.com

Like us on Facebook https://www.facebook.com/filiminlight 
Follow us on Twitter @filiminlight