Airtime for Turnkey Linux - Airtime Support Discussions on Sourcefabric Forum

rik goldman

I intend to submit a patch to derive a dedicated Airtime appliance ISO from TurnKey Linux (Lucid or Squeeze). I have shared a preliminary patch on their forums at http://www.turnkeylinux.org/forum/general/20120513/viable-patch-candidate-airtime-broadcasters. Where the patch is failing is at starting rabbitmq-server; the installation fails on both Squeeze and Lucid cores. I'm reading this thread now with interest. I'll pursue the solutions outlined on that thread while keeping in mind this is for a chroot env that is unconfigured. I'm eager to complete this patch and looking forward to advocating for a place for airtime in ed tech as appropriate. I look forward to your feedback/responses.

rik goldman

Well, I have something useable even if it isn't a turnkey Airtime appliance system. The following script can be used on installed turnkey linux core (12RC, Squeeze) to bring the system to a ready to roll Airtime instance. However, the bash script isn't reliant on the tklpatch mechanism and should work without changing much on any bare Squeeze server installation. Attached nevertheless is a patch that can be applied to a running TKL Core Squeeze installation using the patch mechanism. This will have to do until I can see my way around rabbitmq-server. Feedback would be fantastic. I look forward to working further on this.

#!/bin/bash -ex

HOSTNAME=Airtime
echo "$HOSTNAME" > /etc/hostname
sed -i "s|127.0.1.1 \(.*\)|127.0.1.1 $HOSTNAME|" /etc/hosts

#APT_SOURCES=/etc/apt/sources.list.d
#sed -i "/lucid multiverse/ s/# //" $APT_SOURCES/sources.list


debconf-set-selections -v << END
rabbitmq-server rabbitmq-server/upgrade_previous    note
airtime    airtime/apache-serveradmin    string    root@localhost
airtime    airtime/apache-setup    select    dedicated v-host
airtime    airtime/apache-servername    string    localhost
airtime    airtime/apache-deldefault    select    no change
airtime    airtime/icecast-hostname    string    localhost
airtime    airtime/icecast-sourcepw    string    hackme
airtime    airtime/admin-password    string    admin
airtime    airtime/icecast-relaypw    string    hackme
airtime    airtime/icecast-adminpw    string    hackme
airtime    airtime/icecast-setup    boolean    false
END

echo "deb http://backports.debian.org/debian-backports squeeze-backports main" >> /etc/apt/sources.list.d/sources.list
echo "deb http://apt.sourcefabric.org/ squeeze main" > /etc/apt/sources.list.d/codefabric.list


#echo "deb http://www.rabbitmq.com/debian/ testing main" >> /etc/apt/sources.list.d/codefabric.list  - no help
#wget http://www.rabbitmq.com/rabbitmq-signing-key-public.asc -forget it
#apt-key add rabbitmq-signing-key-public.asc -unnecassary

apt-get update
DEBIAN_FRONTEND=noninteractive apt-get -y --force-yes \
    -o DPkg::Options::=--force-confdef \
    -o DPkg::Options::=--force-confold \
    install sourcefabric-keyring python-pkg-resources python-setuptools

apt-get update
#Install python-virtualenv
wget http://apt.sourcefabric.org/pool/main/p/python-virtualenv/python-virtualenv_1.4.9-3_all.deb
dpkg -i python-virtualenv_1.4.9-3_all.deb


DEBIAN_FRONTEND=noninteractive apt-get -y \
    -o DPkg::Options::=--force-confdef \
    -o DPkg::Options::=--force-confold \
    install airtime

Albert FR

having a turnkey airtime linux will be great ;)

Daniel James

It does sound like the fixed and resolvable hostname issue. See:

http://en.flossmanuals.net/airtime-en-2-0/preparing-the-server/

rik goldman

Excellent - thank your for the feedback. Does that fit with what's resolved it? Which is this: after I've defined the hostname (first stanza), the script does this:
hostname -F /etc/hostname
This takes me all the way through the end of the installation process, the configuration check. I get a FAIL for media-monitor. When the config check throws an error, the patch process fails.

rik goldman

Here's the output from the system check at the end of apt-get install airtime:

*** Verifying your system environment, running airtime-check-system ***
AIRTIME_STATUS_URL             = http://localhost/api/status/format/json/api_key/%%api_key%%
AIRTIME_SERVER_RESPONDING      = OK
KERNEL_VERSION                 = 2.6.32-5-686
MACHINE_ARCHITECTURE           = i686
TOTAL_MEMORY_MBYTES            = 2072968
TOTAL_SWAP_MBYTES              = UNKNOWN
AIRTIME_VERSION                = 2.0.3
OS                             = Ubuntu 10.04.1 LTS i686
CPU                            = Intel(R) Core(TM) i3 CPU         550 @ 3.20GHz
WEB_SERVER                     = Apache/2.2.14 (Ubuntu)
PLAYOUT_ENGINE_PROCESS_ID      = 4922
PLAYOUT_ENGINE_RUNNING_SECONDS = 12
PLAYOUT_ENGINE_MEM_PERC        = 0.4%
PLAYOUT_ENGINE_CPU_PERC        = 0.0%
LIQUIDSOAP_PROCESS_ID          = 4924
LIQUIDSOAP_RUNNING_SECONDS     = 12
LIQUIDSOAP_MEM_PERC            = 0.9%
LIQUIDSOAP_CPU_PERC            = 0.0%
MEDIA_MONITOR_PROCESS_ID       = FAILED
MEDIA_MONITOR_RUNNING_SECONDS = -1
MEDIA_MONITOR_MEM_PERC         = 0%
MEDIA_MONITOR_CPU_PERC         = 0%
RABBITMQ_PROCESS_ID            = 4478
RABBITMQ_RUNNING_SECONDS       = 10
RABBITMQ_MEM_PERC              = 0.5%
RABBITMQ_CPU_PERC              = 0.0%

-- There appears to be a problem with your Airtime installation.

rik goldman

Patch complete. Airtime 2.0.3 is now available as a dedicated appliance built over TurnKey Linux’s LAPP stack. ISO is available here,
as is the patch from which the ISO is derived. Appliance includes
webmin, shellinabox, ssh, and of course Apache2 and postgres - all built
over Ubuntu’s Lucid (TurnKey Linux's Core). Default credentials for airtime are admin/admin; root and postgres credentials, and tzdata, are configured on first boot. I look forward to feedback, comments, suggestions.

Albert FR

great news !
webmin working fine with airtime ?

rik goldman · Post edited by rik goldman at 2012-05-18 09:59:04

Thanks Albert. So far, they seem to be doing fine together (webmin and airtime). Seems to be no problem. I'm not sure how to stress the relationship, but we'll try applying uncomfortable changes and see how that goes. Without virtualmin, it's prolly wise to just use webmin for user admin tasks, however (rather than apache2 config). With virtualmin...probably don't do that ?

Paul Baranowski

On Fri, May 18, 2012 at 7:12 AM, rik goldman <<br />airtime-support@lists.sourcefabric.org> wrote:

> Patch complete. Airtime 2.0.3 is now available as a dedicated appliance
> built over TurnKey Linux’s LAPP stack. ISO
> is available *here* , as is the patch from
> which the ISO is derived. Appliance includes webmin, shellinabox, ssh, and
> of course Apache2 and postgres - all built over Ubuntu’s Lucid (TurnKey
> Linux's Core ). Default credentials for
> airtime are admin/admin; root and postgres credentials, and tzdata, are
> configured on first boot. I look forward to feedback, comments, suggestions.

Others have tried to use Webmin with Airtime. However, when Apache was
upgraded, it uninstalled Airtime:
http://forum.sourcefabric.org/discussion/comment/12617

So you may want to check if that problem exists on your system...

- Paul

rik goldman · Post edited by rik goldman at 2012-05-18 17:19:41

Thanks, I will give it certain check. I know TKL keeps webmin in its own repo because of problems from upstream. They package it themselves for their appliances. I'll see if I can break it.

rik goldman

Haven't been able to break the appliance with webmin integrated. Nevertheless, I'm going to revise the patch and derive a new ISO that doesn't have webmin integrated by default.

Martin Konecny

rik goldman said:
Patch complete. Airtime 2.0.3 is now available as a dedicated appliance built over TurnKey Linux’s LAPP stack. ISO is available here,
as is the patch from which the ISO is derived. Appliance includes
webmin, shellinabox, ssh, and of course Apache2 and postgres - all built
over Ubuntu’s Lucid (TurnKey Linux's Core). Default credentials for airtime are admin/admin; root and postgres credentials, and tzdata, are configured on first boot. I look forward to feedback, comments, suggestions.

Hey Rik,

This is really coo!! I'm happy to see the community creating their own solutions using Airtime. 2.1.0 is coming out soon and the packaging is very similar to 2.0.3, so there shouldn't be any problems if you want to update the ISO once it comes out.

Albert FR

great job @rik

rik goldman

Thanks, Albert. I'll update for 2.1.0., given I can wrap my head around it. The challenge for airtime 2.0.3 was installing the services in chroot environment. Ultimately, the install couldn't pass the install check that package has built into it, so the automation script choked.

Martin Konecny

Ultimately, the install couldn't pass the install check that package has built into

Can you be more specific about this?

rik goldman

Yes indeed. Not all the services called for by Airtime could be started in the chroot environment where the patch is applied. Rabbitmq-server was a problem that I worked around; the remaining problem was airtime.media-monitor. I couldn't start; consequently the check that's built into the deb install failed. Are those helpful details?

Martin Konecny

@Rik,

I'm curious why you would want to install the services into a chroot environment? Also, the error messages displayed by media-monitor might help. I suspect it had something to do with an import "mpQueue" not defined?

rik goldman · Post edited by rik goldman at 2012-05-30 05:00:50

Revision B of the Airtime 2.0.3 Appliance ISO and the TKLPatch from which its derived has been posted to http://www.23eyes.org/9while9. For this revision, I've pulled webmin per suggestion.
------
On chroot:
It's an inherent part of the TKLPatch mechanism. I can't begin to explain it, so here's links to documentation:

http://www.turnkeylinux.org/docs/tklpatch
http://www.turnkeylinux.org/docs/tklpatch/apply (applying a patch; tutorial)

rik goldman

OK, now the ISO is properly available for download. Forgot to enable it. Airtime Rev. B

rbouman

Hi Rik, thanks for the work you have done / still are doing on airtime.

I've tried to find the 'Airtime Rev. B' iso and it appears to have gone to cyber heaven.
Could you please put a new link to the iso?

Thank you.

Albert FR

I'm trying to do a new airtime turnkey linux during my vacations ;-)
i'm publishing my results on this forum

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