Feature/93 run as service (#97)

todo-app/aws/3-tier-app/lab/services/todo/app/templates/deployment.tpl

@@ -1,9 +1,13 @@
 #!/bin/bash -x
 
-export MYSQL_HOST='${MYSQL_HOST}'
-export MYSQL_DB_NAME='${MYSQL_DB_NAME}'
-export MYSQL_USER='${MYSQL_USER}'
-export MYSQL_PASSWORD='${MYSQL_PASSWORD}'
+# Export mysql environment variables
+systemctl set-environment MYSQL_HOST=${MYSQL_HOST}
+systemctl set-environment MYSQL_DB_NAME=${MYSQL_DB_NAME}
+systemctl set-environment MYSQL_USER=${MYSQL_USER}
+systemctl set-environment MYSQL_PASSWORD=${MYSQL_PASSWORD}
+
 
 # bootstrap todo app
-java -server -Dfile.encoding=utf-8 -XX:+ExitOnOutOfMemoryError -Djava.security.egd=file:/dev/./urandom -Duser.timezone=UTC -jar /opt/app.jar
+sudo systemctl daemon-reload
+sudo systemctl enable todo.service
+sudo systemctl start todo

todo-app/aws/3-tier-app/packer/todo.json → todo-app/aws/3-tier-app/packer/todo/app.json

@@ -3,8 +3,6 @@
       "aws_access_key": "{{env `AWS_ACCESS_KEY`}}",
       "aws_secret_key": "{{env `AWS_SECRET_KEY`}}",
       "aws_region": "{{env `AWS_REGION`}}",
-      "ssh_user" : "{{env `SSH_USER`}}",
-      "ssh_user_group" : "{{env `SSH_USER_GROUP`}}",
       "app_version" : "{{env `APP_VERSION`}}"
   },
   "builders": [
@@ -39,15 +37,13 @@
   "provisioners": [
     {
         "type": "file",
-        "source": "todo.pub",
-        "destination": "/tmp/todo.pub"
+        "sources": "todo.pub,services/bootstrap.sh,services/app.service",
+        "destination": "/tmp/"
       },
     {
         "type": "shell",
-        "script": "scripts/todo-installer.sh",
+        "script": "scripts/installer.sh",
         "environment_vars": [
-            "USER_GROUP={{user `ssh_user_group`}}",
-            "USER={{user `ssh_user`}}",
             "APP_VERSION={{user `app_version`}}"
         ]
     }

todo-app/aws/3-tier-app/packer/todo/scripts/installer.sh

@@ -0,0 +1,47 @@
+#!/bin/bash
+set -x
+
+# Install necessary dependencies
+sudo DEBIAN_FRONTEND=noninteractive apt-get -y install software-properties-common
+sudo DEBIAN_FRONTEND=noninteractive apt-add-repository universe
+sudo DEBIAN_FRONTEND=noninteractive apt-get -y -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confold" update
+sudo DEBIAN_FRONTEND=noninteractive apt-get -y -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confold" upgrade
+sudo apt-get -y -qq install curl git openjdk-11-jdk maven apt-transport-https ca-certificates
+
+# Setup sudo to allow no-password sudo for "psi" group and adding "todo" user
+sudo groupadd -r psi
+sudo useradd -m -s /bin/bash todo
+sudo usermod -a -G psi todo
+sudo cp /etc/sudoers /etc/sudoers.orig
+echo "todo  ALL=(ALL) NOPASSWD:ALL" | sudo tee /etc/sudoers.d/todo
+
+# Installing SSH key
+sudo mkdir -p /home/todo/.ssh
+sudo chmod 700 /home/todo/.ssh
+sudo cp /tmp/todo.pub /home/todo/.ssh/authorized_keys
+sudo chmod 600 /home/todo/.ssh/authorized_keys
+sudo chown -R todo /home/todo/.ssh
+sudo usermod --shell /bin/bash todo
+
+
+
+# Create JAVA_HOME for todo & download the todo-app from github
+
+sudo -H -i -u todo -- env bash << EOF
+whoami
+echo ~todo
+cd /home/todo
+export JAVA_HOME=/usr/lib/jvm/java-1.11.0-openjdk-amd64/
+export PATH=$PATH:$JAVA_HOME/bin
+git clone https://github.com/Raghav2211/psi-lab.git
+cd psi-lab/todo-app
+mvn clean package -DskipTests
+sudo mkdir /opt/todo
+sudo cp target/psi-todo-${APP_VERSION}.jar /opt/todo/app.jar
+sudo cp /tmp/bootstrap.sh /opt/todo/bootstrap.sh
+sudo chmod 744 /opt/todo/bootstrap.sh
+sudo cp /tmp/app.service /etc/systemd/system/todo.service
+cd ../..
+rm -r psi-lab
+EOF
+

todo-app/aws/3-tier-app/packer/todo/services/app.service

@@ -0,0 +1,10 @@
+[Unit]
+Description=Todo Application as a Service
+[Service]
+User=todo
+#path to the executable bash script which executes todo app
+ExecStart=/bin/bash /opt/todo/bootstrap.sh
+SuccessExitStatus=143
+TimeoutStopSec=10
+Restart=on-failure
+RestartSec=5

todo-app/aws/3-tier-app/packer/todo/services/bootstrap.sh

@@ -0,0 +1,2 @@
+#!/bin/sh
+java -server -Dfile.encoding=utf-8 -XX:+ExitOnOutOfMemoryError -Djava.security.egd=file:/dev/./urandom -Duser.timezone=UTC -jar /opt/todo/app.jar