Deployment: robust process

deploy.sh

 #!/bin/bash
-# $1: port number to run the server
-# $2: filename to log output
-
-PORT="${1:-8080}"
-LOG="${2:-out.log}"
-LOGPATH="$(pwd)/$LOG"
-BACKUPPATH="$(pwd)/$LOG".backup
 
 # Get latest HEAD
 git pull origin master
 # Build project
 stack build
 # Kill previous process
-pkill javawlp
-# Backup previous log if it exists by appending it to a backup file.
-if [ -f "$LOGPATH" ]
-then
-	cat "$LOGPATH" >> "$BACKUPPATH"
-	rm "$LOGPATH"
-fi
-# Run server
-nohup stack exec javawlp -- --runServer -p $PORT > $LOG &
\ No newline at end of file
+immortalctl halt javawlp
+# Immortal will automatically restart the new process

immortal/javawlp.yml

+cwd: /root/javawlp
+cmd: stack exec javawlp -- --runServer -p 8080
+log:
+    file: /root/javawlp/output.log
+    age: 86400
+    num: 7