tomcatvps

2017-12-26

Setup Tomcat+mysql on VPS

I try to host my webapps(tomcat+mysql) on vps (ubuntu), here try to explain steps and solutions for the problem which I come across

Install tomcat

Install tomcat8 on ubuntu

Install mysql

Install mysql on ubuntu

Using port 80 instead of 8080 for web apps@tomcat

[root@myroot ~]# iptables -t nat -A PREROUTING -p tcp -m tcp --dport 80 -j REDIRECT --to-ports 8080
[root@myroot ~]# iptables -t nat -A PREROUTING -p udp -m udp --dport 80 -j REDIRECT --to-ports 8080
# persist the changes across restarts
sudo apt-get install iptables-persistent
# save for restarts
iptables-save > /etc/iptables/rules.v4
ip6tables-save > /etc/iptables/rules.v6

Fixing No output folder issue

Exception
org.apache.jasper.JasperException: java.lang.IllegalStateException: No output folder
    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:538)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:364)
  org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
  org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
  javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
root cause
It is due to write access for left over tomcat\work directory , just remove work directory, it will be re-created again after restarting tomcat

Deploy Application at Tomcat Root

Deploy App at Tomcat Root
- Via ROOT.xml
https://stackoverflow.com/questions/7276989/how-to-set-the-context-path-of-a-web-application-in-tomcat-7-0/15625953