[SR-Users] Kamailio in cloud environments

[David Villasmil]

That's the one, thanks @Karsten!


More info, i changed my systemd unit to execute a script when starting up,
like so:

# cat /etc/systemd/system/multi-user.target.wants/kamailio.service
[Unit]
Description=Kamailio (OpenSER) - the Open Source SIP Server
After=network.target

[Service]
Type=forking
Environment='CFGFILE=/etc/kamailio/kamailio.cfg'
Environment='SHM_MEMORY=64'
Environment='PKG_MEMORY=8'
Environment='USER=kamailio'
Environment='GROUP=kamailio'
EnvironmentFile=-/etc/default/kamailio
EnvironmentFile=-/etc/default/kamailio.d/*
# PIDFile requires a full absolute path
PIDFile=/var/run/kamailio/kamailio.pid
ExecStart=/etc/kamailio/startkam.sh
Restart=on-abort

[Install]
WantedBy=multi-user.target

And /etc/kamailio/startkam.sh is like:

#!/bin/bash

MYSQL=$(/etc/kamailio/aws-getpass.sh dev us-east-1 dburl)
SHM_MEMORY=64
PKG_MEMORY=8
USER=kamailio
GROUP=kamailio
CFGFILE=/etc/kamailio/kamailio.cfg
/usr/sbin/kamailio -P /var/run/kamailio/kamailio.pid -f $CFGFILE -m
$SHM_MEMORY -M $PKG_MEMORY -u $USER -g $GROUP -A "DBURL=\"$MYSQL\"" -A
"CBDBURL=\"cb=>$MYSQL\"" -A "ASGDBURL=\"asg=>$MYSQL\""

which in turn calls /etc/kamailio/aws-getpass.sh, which is the actual
script talking to AWS via BOTO3 to get the data i need.

You can just change the params and use them in your kam script normally
like:

modparam("acc", "db_url", DBURL )

Hope that helps.

Regards,

David Villasmil
email: david.villasmil.work at gmail.com
phone: +34669448337


On Sun, Nov 10, 2019 at 9:22 PM Alex Balashov <abalashov at evaristesys.com>
wrote:

> -A ... oh wow. That's savvy! Cheers.
>
> On Sun, Nov 10, 2019 at 08:51:59PM +0100, Karsten Horsmann wrote:
>
> > Hi David,
> >
> > You mean this thread from may 2019.
> > https://lists.kamailio.org/pipermail/sr-users/2019-May/105599.html
> >
> > Pro Tipp, search on lists.kamailio.org/pipermail/ to get your link.
> Great
> > help the mailing list archive btw.
> >
> > Cheers
> > Karsten
> >
> > David Villasmil <david.villasmil.work at gmail.com> schrieb am So., 10.
> Nov.
> > 2019, 19:03:
> >
> > > I needed to discover the user/pass for the dB when kamailio starts so
> as
> > > not to store it locally. I get the data via an AWS script, then start
> > > kamailio passing the parameters, then use of those in the script. You
> can
> > > do exactly this to get and set the current ip address.
> > >
> > > I don’t know how to share a thread from this mailing list, but search
> for
> > > the subject “ define a DBURL with SLQOPS fails” and you will find all
> info
> > > there.
> > >
> > > On Sun, 10 Nov 2019 at 17:48, Alex Balashov <abalashov at evaristesys.com
> >
> > > wrote:
> > >
> > >> On Sun, Nov 10, 2019 at 06:16:44PM +0100, Alejandro Recarey wrote:
> > >>
> > >> > Hi, I am trying to get kamailio working cloud provider, autoscaling
> > >> > them behind a TCP load balancer.
> > >> >
> > >> > Is there a way for kamailio to discover its Public IP at startup? Or
> > >> > do people generally program their own startup scripts that modify
> the
> > >> > kamailio config file before starting it?
> > >>
> > >> They generally do the latter, especially since public IP discovery
> > >> mechanisms tend to be specific to the cloud provider.
> > >>
> > >> But various templating mechanisms make this quite easy to do.
> > >>
> > >> --
> > >> Alex Balashov | Principal | Evariste Systems LLC
> > >>
> > >> Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free)
> > >> Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
> > >>
> > >> _______________________________________________
> > >> Kamailio (SER) - Users Mailing List
> > >> sr-users at lists.kamailio.org
> > >> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
> > >>
> > > --
> > > Regards,
> > >
> > > David Villasmil
> > > email: david.villasmil.work at gmail.com
> > > phone: +34669448337
> > > _______________________________________________
> > > Kamailio (SER) - Users Mailing List
> > > sr-users at lists.kamailio.org
> > > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
> > >
>
> > _______________________________________________
> > Kamailio (SER) - Users Mailing List
> > sr-users at lists.kamailio.org
> > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>
>
> --
> Alex Balashov | Principal | Evariste Systems LLC
>
> Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free)
> Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
>
> _______________________________________________
> Kamailio (SER) - Users Mailing List
> sr-users at lists.kamailio.org
> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>
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