Simple package status commands/script help

[ilovepancakes]

Hi all,

 

I need a little assistance with direction on how to write a simple script involving the package status (start or stop) for specific packages in DSM. I am setting up a service monitor and want to be able to "read" the status of some of the packages running on DSM (Chat, VideoStation, etc...).

 

The way it works is, a URL is provided by the service monitor and linux can "check in" using the specific URL to show it is alive. What I want to do is have a scheduled task on DSM execute bash commands (every 5 minutes) to check if a package is started and if it is, then curl or wget the URL to the service monitor. Creating the scheduled task and using curl to ping the URL I have a handle on but what commands can be run before the curl to make sure the package is in a start state before getting to the curl?

 

Ideally I would imagine a command that returns an error or nothing at all would be best because then I could simply enter "status_check_command && wget https://ping.com/" and I think the wget won't fire unless the status_check_command runs successfully? Is that right?

 

I have only come across commands (synoservice) though that return something all the time. That command with --status [service name] will output back out if the service is start or stop. But how can I create a command that only moves to the curl if the status returned is started?

[Olegin]

Seems something like this

$ sudo synoservicectl --status pkg-Docker-dockerd
pkg-Docker-dockerd start/running

$ sudo synoservicectl --status pkg-videostation-synovideopreprocessd
pkg-videostation-synovideopreprocessd start/running
$ sudo synoservicectl --status pkg-videostation-synovideopreprocessd
pkg-videostation-synovideopreprocessd stop/waiting

Names of the packages you саn see in it's config path /etc/init

 

Edited June 20, 2019 by Olegin

[Olegin]

Example, script Videost.sh:

#!/bin/sh
if synoservicectl --status pkg-videostation-synovideopreprocessd | grep 'start/running'
then echo 'Videostation started...'
else echo 'Videostation stoped...'
fi

Скрытый текст

 

Скрытый текст

 

Edited June 20, 2019 by Olegin

[ilovepancakes]

12 hours ago, Olegin said:

Example, script Videost.sh:

#!/bin/sh
if synoservicectl --status pkg-videostation-synovideopreprocessd | grep 'start/running'
then echo 'Videostation started...'
else echo 'Videostation stoped...'
fi

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Awesome help! I was able to make it work with that script as a base with some slight modifications. Name of service had to have "ctl" after "pkg" and no "-synovideopreprocessd" after package name.

#!/bin/sh
if synoservicectl --status pkgctl-VideoStation | grep 'start/running'
then curl --retry 3 https://example.com
else curl --retry 3 https://example.com/fail
fi

Thank you @Olegin!