Error when connect MySQL database to Confluence

[quoc]

Hi, 

I'm trying to connect confluence with my own database but I got this error.
Confluence 6.14.1
JDBC: mysql-connector-java-5.1.47
Mysql 5.7.25 (It's already connected successfully with jira server)

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The SystemInformationService could not be retrieved from the container. Therefore very limited information is available in this error report. 
The SystemInformationService could not be retrieved due to the following error: java.lang.IllegalStateException: Spring Application context has not been set
Cause
com.atlassian.config.ConfigurationException: Invalid bean definition with name 'tenantedLuceneConnection' defined in class path resource [indexingSubsystemContext.xml]: Could not resolve placeholder 'lucene.index.dir' in value "${lucene.index.dir}"; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'lucene.index.dir' in value "${lucene.index.dir}"
at com.atlassian.confluence.setup.actions.AbstractSetupAction.transitionFromColdToVacantState(AbstractSetupAction.java:162)
.....

Please help me, thanks you 

[quoc · Accepted solution]

:))

Fixed by add this line 

<property name="lucene.index.dir">${confluenceHome}/index</property>

to <home_dir>/confluence.cfg.xml 

[Grigory Salnikov]

If only all the questions were solved by their authors :)