hbfl | 🐹⚽Demo Project for AWS Developer : Designing and Developing | Model View Controller library
kandi X-RAY | hbfl Summary
kandi X-RAY | hbfl Summary
Demo Project for AWS Developer: Designing and Developing on Pluralsight
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QUESTION
I am new to node and following the excellent AWS Developer tutorial by Ryan Lewis. In that course we learn to deploy a Node.js application to AWS EC2 using the Bitnami Node.js image from the AWS Marketplace. To practice a bit I wanted to turn the app into a service using systemd
, so that it comes back after a restart. However, after lots of debugging I figured out that the service seems to be restarting all the time and the app never comes online. This might be caused by the way the app is started. It is run using the forever
CLI tool. When I run npm start
manually, I see the following output:
ANSWER
Answered 2020-Jan-21 at 22:36I think Type=forking
is correct.
https://www.freedesktop.org/software/systemd/man/systemd.service.html
If set to forking, it is expected that the process configured with ExecStart= will call fork() as part of its start-up. The parent process is expected to exit when start-up is complete and all communication channels are set up. The child continues to run as the main service process, and the service manager will consider the unit started when the parent process exits. This is the behavior of traditional UNIX services. If this setting is used, it is recommended to also use the PIDFile= option, so that systemd can reliably identify the main process of the service. systemd will proceed with starting follow-up units as soon as the parent process exits.
That is how forever
works. Also note that the apache2
service also uses Type=forking
.
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