Scripts
The scripts
folder contains several Bash scripts we found useful.
Manual Application Deployment
These scripts handle deployment of a Play app created using sbt dist
on a unix machine. When the application is mature enough, it is advisable to add it as a systemd
unix service - see the psps.service
service definition file.
This type of setup is useful on a single-machine setups, e.g. on a VPS running a small-to-medium scale application. Not the kind of thing you’d do in a cloud environment. |
The setup of the application directory is described below. The scripts should be run from that directory.
app/
app-190507 (1)
app-190620 (2)
app-190712 (3)
app-current (4)
scripts (5)
RUNNING.pid (6)
1 | Application deployed at May 7th, 2019 |
2 | Application deployed at June 20th, 2019 |
3 | Application deployed at July 12th, 2019 |
4 | Link to the current application |
5 | Scripts folder |
6 | Process id of the running application |
This setup allows for a quick rollback in case a newly deployed application does not work properly.
Deploy Scripts
- deploy-app
-
Unzips the archive, gives the folder a date-based name.
- prepare-new
-
Copies server config files from the previous app version to the new one
- link-app
-
Links the passed application as
app-current
- start-current
-
Starts the current application.
- stop-current
-
Stops the current application.