You might need to connect Jira to other services, such as LDAP, mail servers, and other websites. Often, these services make use of SSL. In such cases, the connection will fail, and you will see the following errors in your Jira log file:

javax.net.ssl.SSLHandshakeException: 
sun.security.validator.ValidatorException: PKIX path building failed:  
sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification
path to requested target

For this recipe, we will use the Java keytool utility, so make sure you have the following configuration set up:

• Obtain the required SSL certificate from the target system.
• Ensure that the JAVA_HOME environment variable is set properly.
• Make sure you know which JDK/JRE Jira is using. You can find this information on the System Info page, where you need to look for the java.home property.
• Make sure your JRE/JDK's bin directory is added to your PATH environment variable, and the keytool command will output its usage.
• Obtain the password for the Java trust store used by Jira.

In this recipe, let's assume we want to connect Jira to an LDAP server that is running on SSL. Perform the following steps to make it a trusted site inside Jira:

1. Open up a Command Prompt and go to the directory where the certificate file resides.

2. Import the certificate into the trust store by running keytool -import -alias tomcat -file file.cer $JAVA_HOME/jre/lib/security/cacertscommand, where file.cer is the certificate file.
3. Restart Jira to apply the changes.

When Jira attempts to connect to an SSL-protected service, it will first check whether the target service's certificate can be trusted. This is done by checking to see whether the certificate is present in what is called the Java trust store. If the certificate is not present, the connection will fail.

The trust store is a special KeyStore repository, usually called cacerts, and is located in the $JAVA_HOME/lib/security directory on the server.

We used the keytool utility to import the certificate to our local trust store, so the target service will be registered as a trusted service and will allow Jira to connect to it successfully.