Possibility to plot tests against multiple servers?

[CraigHead]

I would like to test multiple Speedtest servers to eliminate single origin variances and to get a better picture of internet connectivity health. e.g.

-e TESTSERVER=stosat-dvre-01.sys.comcast.net.prod.hosts.ooklaserver.net:8080 \
-e TESTSERVER=speedtest-lgmt.mynextlight.net.prod.hosts.ooklaserver.net:8080 \
-e TESTSERVER=speedtest.implicit.systems.prod.hosts.ooklaserver.net:8080

or

-e TESTSERVER=stosat-dvre-01.sys.comcast.net.prod.hosts.ooklaserver.net:8080,speedtest-lgmt.mynextlight.net.prod.hosts.ooklaserver.net:8080,speedtest.implicit.systems.prod.hosts.ooklaserver.net:8080

Is this possible?

[ansemjo]

Not right now because this feature isn't implemented. But in principle .. sure.

If you're fine with the measurements appearing on the same plot line (which will then probably become a bit more jerky). The first syntax won't work though because you're just overwriting the same environment variable.

I took a quick look at taganaka/SpeedTest to see if it accepts multiple servers already and saw an .append(). Unfortunately, it only appends multiple arguments to a string and I'm not sure how it handles them without any separators ... https://github.com/taganaka/SpeedTest/blob/0f63cfbf7ce8d64ea803bf143b957eae76323405/CmdOptions.h#L61

So we'll probably just have to run take_measurement() multiple times.

[ansemjo]

As a short-term solution: you could just disable the cron schedule (or pick something very rare, like yearly) and trigger the measurements from outside the container:

docker run [...] -n speedtest -e SCHEDULE="0 0 1 1 *" ansemjo/speedtest

Then put this in a script and trigger it from your host's crontab, for example:

#!/usr/bin/env bash
for ts in \
  stosat-dvre-01.sys.comcast.net.prod.hosts.ooklaserver.net:8080 \
  speedtest-lgmt.mynextlight.net.prod.hosts.ooklaserver.net:8080 \
  speedtest.implicit.systems.prod.hosts.ooklaserver.net:8080; do
    docker exec speedtest measure -s "$ts"
done