deploying a node app using a CI system to a new directory.

deploy_node_app.sh

#bin/bash
CURRENT_DATE=`date +%s`
echo "current date is $CURRENT_DATE"
DEPLOYMENT_DIR='{deployment directory}'
CURRENT_DEPLOYMENT_DIR=$DEPLOYMENT_DIR$CURRENT_DATE
ARTIFACT_ZIP_LOCATION=~/tmp/
echo "current deployment dir $CURRENT_DEPLOYMENT_DIR"
PM2_PROCESS_NAME='{process name}'
mkdir -p $CURRENT_DEPLOYMENT_DIR
cp $ARTIFACT_ZIP_LOCATION/web.tar.gz $CURRENT_DEPLOYMENT_DIR
cd $CURRENT_DEPLOYMENT_DIR
gzip -d web.tar.gz
tar -xf web.tar
pm2 stop $PM2_PROCESS_NAME
pm2 delete $PM2_PROCESS_NAME
rm $DEPLOYMENT_DIR/current && ln -s $CURRENT_DEPLOYMENT_DIR $DEPLOYMENT_DIR/current
NODE_ENV=production pm2 start server.js --name="$PM2_PROCESS_NAME"
rm web.tar