scp -i no1.pem -r /Volumes/Code/Customer/410/ethereum_viewer_webapp/dist centos@44.201.61.85:/eth_node/web/webapps/ethereum_viewer_webapp
scp -i no1.pem /Volumes/Code/Customer/410/ethereum_viewer_webapp/nginx.conf centos@44.201.61.85:/etc/nginx

start:
systemctl start nginx
restart:
systemctl restart nginx
status:
systemctl status nginx

logs:
tail -f /eth_node/web/apache-tomcat-webapp/logs/catalina.out
cat /eth_node/web/apache-tomcat-webapp/logs/catalina.out
rm /eth_node/web/apache-tomcat-webapp/logs/catalina.out