[erlang-questions] Setting up a startup service
Mon Dec 18 23:55:15 CET 2017
I have built an Erlang program and created a release using rebar3 release. To run this program, I use the command:
What I would like to do now is have this program start on startup whenever the box boots or whenever the VM crashes. I have to use a RHEL 7 box for this, so I am using systemd. I created a service below:
This doesn’t work however - I get the following output:
Dec 18 17:43:59 localhost.localdomain systemd: Started program.
Dec 18 17:43:59 localhost.localdomain systemd: Starting program…
(It is odd that it says “started program” followed by “starting program”…)
Now here is the interesting part - if I switch out “start” with “console” , I get good output - I get the successful start message. But then a crash… :
Dec 18 17:45:40 localhost.localdomain program: 17:45:40.429 [info] Application program started on node 'program@REDACTED'
Dec 18 17:45:40 localhost.localdomain program: Eshell V8.2.2 (abort with ^G)
Dec 18 17:45:40 localhost.localdomain program 14167]: (program@REDACTED)1> *** Terminating erlang ('program@REDACTED’)
This crash is expected though, because I tried to start it in console but it was a background process. My point though is that it starts up, but for some unknown reason it is exiting. On top of that, all of the log files in _build/default/rel/program/log are empty, so I’m not getting any valuable info on why it isn’t starting.
And to clarify, I have copy/pasted the ExecStart command from the file to the command line and it works when it is run from the command line, so this isn’t a path issue.
Does anyone have any idea as to what I am doing wrong?
Thank you in advance.
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