Create systemd Service for MYLINEHUB VoiceBridge

Production systems must run reliably without manual intervention.

Restarting Java processes manually, losing logs, or forgetting startup commands creates instability in telecom and AI-driven environments.

This is why systemd services are critical for MYLINEHUB deployments.

In this guide, you will configure:

• VoiceBridge systemd service
• MYLINEHUB Backend systemd service
• Graceful shutdown scripts
• Centralized logging and monitoring

Why systemd Matters in Telecom & AI Calling

MYLINEHUB is not a simple web application. It runs real-time voice processing, AI streaming, RTP handling, and telecom integrations that must remain available 24×7.

systemd ensures:

• Automatic startup after reboot
• Crash recovery with restart policies
• Structured logging using journalctl
• Clean shutdown without killing active calls

Step 0 — Fix Sudo Access for Deployment Scripts

Grant password-less sudo access for the deployment user:

sudo visudo -f /etc/sudoers.d/mylinehub

ubuntu ALL=(ALL) NOPASSWD:ALL
  

Restart SSH service after modification:

sudo systemctl restart sshd

Part 1 — VoiceBridge systemd Service

Create Service Definition

sudo nano /etc/systemd/system/mylinehub-voicebridge.service
  

[Unit]
Description=Mylinehub voicebridge Java REST bridge

[Service]
User=ubuntu
WorkingDirectory=/home/ubuntu
ExecStart=/home/ubuntu/start-mylinehub-voicebridge.sh
ExecStop=/home/ubuntu/stop-mylinehub-voicebridge.sh
StandardOutput=file:voicebridge-mylinehub-output.log
StandardError=file:voicebridge-mylinehub-error.log
SuccessExitStatus=143
TimeoutStopSec=10
Restart=on-failure
RestartSec=5

[Install]
WantedBy=multi-user.target
  

Create Start Script

sudo nano /home/ubuntu/start-mylinehub-voicebridge.sh
  

#!/bin/bash
sudo java -Xms3G -Xmx5G -jar "/home/ubuntu/voicebridge-mylinehub.jar" --spring.profiles.active=mylinehub
  

Create Graceful Stop Script

sudo nano /home/ubuntu/stop-mylinehub-voicebridge.sh
  

#!/bin/bash
PORT=8082
PID=$(sudo lsof -ti :$PORT)

if [ -z "$PID" ]; then
  echo "No app running on port $PORT"
  exit 0
fi

sudo kill -15 $PID

for i in {1..40}; do
  if ps -p $PID > /dev/null; then
    sleep 1
  else
    exit 0
  fi
done

sudo kill -9 $PID
  

Enable and Start VoiceBridge

sudo chmod +x /home/ubuntu/start-mylinehub-voicebridge.sh
sudo chmod +x /home/ubuntu/stop-mylinehub-voicebridge.sh

sudo systemctl daemon-reload
sudo systemctl enable mylinehub-voicebridge
sudo systemctl start mylinehub-voicebridge
  

Part 2 — MYLINEHUB Backend systemd Service

Create Backend Service

sudo nano /etc/systemd/system/mylinehub-backend.service
  

[Unit]
Description=Mylinehub Backend Java REST Service

[Service]
User=ubuntu
WorkingDirectory=/home/ubuntu
ExecStart=/home/ubuntu/start-spring.sh
ExecStop=/home/ubuntu/stop-spring.sh
StandardOutput=file:crm-output.log
StandardError=file:crm-error.log
SuccessExitStatus=143
TimeoutStopSec=10
Restart=on-failure
RestartSec=5

[Install]
WantedBy=multi-user.target
  

Start Script with JMX Enabled

#!/bin/bash
sudo java -Dcom.sun.management.jmxremote \
     -Dcom.sun.management.jmxremote.port=1099 \
     -Dcom.sun.management.jmxremote.rmi.port=1099 \
     -Dcom.sun.management.jmxremote.authenticate=false \
     -Dcom.sun.management.jmxremote.ssl=false \
     -Xms3G -Xmx5G -jar "/home/ubuntu/crm.jar"
  

Graceful Stop Script

#!/bin/bash
PORT=8080
PID=$(sudo lsof -ti :$PORT)

if [ -z "$PID" ]; then
  exit 0
fi

sudo kill -15 $PID

for i in {1..40}; do
  if ps -p $PID > /dev/null; then
    sleep 1
  else
    exit 0
  fi
done

sudo kill -9 $PID
  

Enable Backend Service

sudo chmod +x /home/ubuntu/start-spring.sh
sudo chmod +x /home/ubuntu/stop-spring.sh

sudo systemctl daemon-reload
sudo systemctl enable mylinehub-backend
sudo systemctl start mylinehub-backend
  

Logging & Monitoring

View logs in real time:

sudo journalctl -f -u mylinehub-voicebridge
sudo journalctl -f -u mylinehub-backend
  

View last 1000 lines:

sudo journalctl -n 1000 -u mylinehub-backend
  

View logs after specific time:

sudo journalctl -u mylinehub-backend --since "2025-09-26 15:40:00"
  

Operational Lifecycle

• Boot → systemd auto-starts services
• Crash → automatic restart
• Deployment → restart without server reboot
• Logs → centralized via journalctl

Final Thought

Reliable telecom and AI calling systems are not built only with code. They are built with stable operations.

systemd transforms MYLINEHUB from a simple Java application into a production-ready communication platform.