Building the snap package (snapcraft.io) for Kamailio SIP Server on Ubuntu 16.04, at TADHack Global - Berlin, October 15-16, 2016

1. Snappy Kamailio
from 0 to … with snaps
(snapcraft.io)
TADHack Global - Berlin
October 2016
Daniel-Constantin Mierla
asipto.com
@miconda

2. Goal
• make Kamailio friendly to be built as a snap and run it
yesterday at noon
• first look at snapcraft.io following the Ubuntu TADHack resources
• http://tadhack.com/2016/global/developer-resources/

3. Kamailio
• www.kamailio.org
• open source SIP server
• IETF - RFC3261
• developed since 2001
• aka SIP Express Router (SER) or OpenSER
• UDP, TCP, TLS, SCTP - IPv4 and IPv6
• telephony engine, voice, video, instant messaging, presence
• high capacity (large number of devices or number of active calls)
• IMS and VoLTE extensions
• load balancer, least cost routing, DID routing, AAA, SIP firewall, …

4. snapcraft.io
• Package any app for every Linux desktop, server, cloud or
device, and deliver updates directly.
• How do snaps work?
• A snap is a fancy zip file containing an application together
with its dependencies, and a description of how it should
safely be run on your system, especially the different ways it
should talk to other software.
• Most importantly snaps are designed to be secure,
sandboxed, containerised applications isolated from the
underlying system and from other applications. Snaps allow
the safe installation of apps from any vendor on mission
critical devices and desktops

5. First touch
• snapcraft file
• yaml format
• easy to understand
• documentation - some improvements won’t hurt for sure
• conclusion: not hard to get started with

6. Challenges
• sorting out how to set or release the restrictions
• what an application is allowed to do

7. The Work With Stock Kamailio
• snapcraft.yml - not hard to get first version
• there are some examples on snapcraft.io to inspire from
• 4 patches to make it friendly to build and run as a snap
• temporary files in runtime directory
• fifo and control socket files
• creating raw sockets
• disabled
• dedicated starting script
• changes to kamailio.cfg have to be done from starting script
• moving from SNAP dir to SNAP_DATA dir

8. The Commits

9. Future Work
• deploy the tools in the snap
• kamctl, kamcmd, …
• inter-working with other snaps
• mysql server, …
• performance evaluation
• snaps, containers, virtual machine and bare metal

10. Results
• available at:
• https://github.com/miconda/kamailio-snapcraft
Thank You!
Daniel-Constantin Mierla
asipto.com
@miconda
TADHack Global - Berlin
October 2016