> ## Documentation Index
> Fetch the complete documentation index at: https://kb.mochahost.com/llms.txt
> Use this file to discover all available pages before exploring further.

# 503 Service Temporary Unavailable error - Linux VPS/Cloud

If you are seeing the following error in your browser, while accessing a website hosted on your Linux VPS/Cloud and you have any Tomcat JSP based websites running:

**503 Service Temporary Unavailable**

That means that most likely your **Tomcat service is down or is experiencing problems**. 

Depending on your package there are 2 available scenarios on how to proceed:

**Option 1 - Private JVM:** If you are using any of our Private JVM based packages such as Java VPS, Java Cloud or VPS/Cloud with purchased JVM plugin, you can restart your Tomcat service from your cPanel control panel for the site for which the service is down. **The restart service option is available within the Private JVM tool, under the Preferences section of your cPanel.**

If the problem continues we recommend that you login to your service via SSH and investigate further, any log files associated with your hosted JSP websites

**Option 2 - Shared Tomcat:** If you are using the default cPanel/WHM Tomcat installation of Tomcat you can restart it via:

`/scripts/restartsrv\_tomcat`

For more information on how to use/troubleshoot the shared Tomcat service offered with cPanel/WHM please, check:  

You can check if your Tomcat service is up also if you are using cPanel/WHM, and if necessary restart it through the Services section of cPanel/WHM.

We recommend that you review your service load, logs, running processes, etc - if you are experiencing this issue frequently. If you need further assistance please, contact our [support](https://mochahost.com/support.php).