Start a Remote Linode Cloud Server for a JackTrip Session Using an Existing Image
betaFeb252022 : added note about using <enter> after each Terminal command
The link to the Downloadable/Printable PDF version of this guide may be found by scrolling down to the bottom of this page.
IMPORTANT: ALWAYS BE SURE TO DELETE your remote Linode Cloud Server before you logout of your Linode website user account, otherwise you will get charged even if it is OFFLINE!!
This how to guide assumes that you already have a working Linode Image and you just want to Deploy a New Linode for a jacktrip session.
CONTENTS:
S1. Deploy New Linode with jacktrip installed via the Linode website
S2. Login to the new remote Linode Cloud Server via Terminal on your computer
S3. Fire up jackd and then jacktrip in Server Mode on your new remote Linode Cloud Server via Terminal on your computer
S4. When done with your jacktrip session, Delete your remote Linode Cloud Server via the Linode website
Additional Articles in this section:
Linode [S5] Terminal Window Remote Server SHORTCUTS
Linode [S6] Extra Feature - Run Jacktrip in Server Mode independently
GENERAL TIPS:
1. When using Terminal commands, if something doesn’t work as you expected always recheck what you typed in, sometimes a little typo can make the difference between failure and success!
2. When using the Linode website, whenever you perform an action, make sure to wait until the action completes. For example, when you power up your remote Linode Cloud Server, be sure wait until it says RUNNING with a green dot before copying the ssh command and trying to login to your remote Linode Cloud Server.
3. Before you logout of your Linode website user account, make sure to always DELETE your remote Linode Cloud Server otherwise you will continue to get charged for it even if it’s listed as being OFFLINE.
4. As of this writing, there is a monthly charge of $0.10/GB to store Images for Linode users. Limits per user account are: 6GB per Image, 150 GB maximum combined size of all images, up to 25 images.
Start a remote Linode Cloud Server for a jacktrip session using an Existing Image
If you aren’t already logged into the Linode website via the Google Chrome web browser, then do so before starting the following set of instructions.
S1. Deploy New Linode with jacktrip installed via the Linode website
[Images page should appear]
[the images options pop up menu should appear]
[the Linodes / Create page should appear]
[scroll down page if necessary to Linode Plan selections
(the look of this part of the page might look slightly different on different systems)]
When selecting which plan to select for your ensemble, 1 CPU = 2 to 5 connections, a hub requires 2 connections per ensemble member; 8 CPU is probably fine for 8 ensemble members.
[scroll down page if necessary to fill in Linode Label and Root Password]
Note: You should only get charged by the hour even though the Linode Summary window makes it
look like you are going to get charged by the month
[The Linodes page for your remote Linode Cloud Server should appear]
Footnote:
1 If you decide to select Dedicated 16 GB or greater, the first time you do so, you will get the message:
‘Additional verification is required to add this service. Please open a Support ticket’
You can open a support ticket and the Linode Support team will give you permission to select higher plans.
S2. Login to the new remote Linode Cloud Server via Terminal on your computer
Open Terminal on your computer.
S3. Fire up jackd and then jacktrip in Server Mode on your new remote Linode Cloud Server via Terminal on your computer
Type in the Terminal commands below (shown in boldface) and hit the <enter> key.
a. Go to the builddir directory:
cd
then
cd jacktrip
then
cd builddir
b. Start jack in server mode:
in this example, buffer of 512 frames/period, sample rate of 48k, &=run command in background
jackd -d dummy -p512 -r48000 &
c. Start jacktrip(2) in server mode:
here is an example of a command Sarah Weaver has used with the NowNet ensembles
[-S = run in Hub Server Mode, -p2 = client out/in but no loopback]
./jacktrip -S -p2 -q32 -z
d. Connect in jacktrip to your remote Linode Cloud Server as you normally would do.
To do this, you will need the ip-address for your remote Linode Cloud Server.
You can find it on the Linode website back on the Linodes page for your remote Linode Cloud Server:
e. Once you are done with your jacktrip session, you can close/quit out of Terminal, it won’t hurt anything.
Then go on to the next section S4.
Footnote:
(2) to see all the jacktrip command options, type ./jacktrip -h
or go to: https://manpages.debian.org/testing/jacktrip/jacktrip.1.en.html
S4. When done with your jacktrip session, Delete your remote Linode Cloud Server via the Linode website
[The Linodes page should appear]
[The dedicated page for your remote Linode Cloud Server should appear]
[the more options pop up menu should appear]
You will know your remote Linode Cloud Server was successfully deleted when you see the Linode Manager page appear again with no Linodes listed or with that particular Linode missing if you had multiple Linodes running.
To double check that the remote Linode Cloud Server you wanted to delete was deleted:
Check the list of Events to see that the remote Linode Cloud Server you wanted to delete was deleted:
You can now logout of the Linode website.
You should also get an email from Linode detailing your Linode related activity.
Here’s an example [Inactivate Linode means it was deleted]:
Hello Jane2Test! The following activity has recently occurred:
* rpiLinode - (238383963) System Shutdown - Completed Fri, 12 Feb 2021 19:46:31 GMT
* rpiLinode - (238383964) Inactivate Linode - Completed Fri, 12 Feb 2021 19:46:42 GMT