Jira not starting after upgrading to Jira 7

[living-online]

The following plugins are required by JIRA, but have not been started:

• JIRA Projects Plugin (com.atlassian.jira.jira-projects-plugin)
• Atlassian OAuth Consumer Plugin (com.atlassian.oauth.consumer)
• Atlassian Navigation Links Plugin (com.atlassian.plugins.atlassian-nav-links-plugin)
• JIRA Project Config Plugin (com.atlassian.jira.jira-project-config-plugin)
• Applinks - Plugin - Core (com.atlassian.applinks.applinks-plugin)
• Atlassian OAuth Service Provider Plugin (com.atlassian.oauth.serviceprovider)
• Embedded Gadgets Plugin (com.atlassian.gadgets.embedded)
• Gadget Directory Plugin (com.atlassian.gadgets.directory)
• Atlassian JIRA - Plugins - Gadgets Plugin (com.atlassian.jira.gadgets)
• Atlassian JIRA - Plugins - Global Issue Navigator (com.atlassian.jira.jira-issue-nav-plugin)
• Atlassian JIRA - Plugins - Quick Edit Plugin (com.atlassian.jira.jira-quick-edit-plugin)
• Atlassian REST - Module Types (com.atlassian.plugins.rest.atlassian-rest-module)
• Atlassian JIRA - Plugins - REST Plugin (com.atlassian.jira.rest)
• Opensocial Plugin (com.atlassian.gadgets.opensocial)
• Atlassian JIRA - Plugins - Look And Feel Logo Upload Plugin (com.atlassian.jira.lookandfeel)
• Gadget Spec Publisher Plugin (com.atlassian.gadgets.publisher)
• Gadget Dashboard Plugin (com.atlassian.gadgets.dashboard)

/opt and /var dirs are owned by jira:jira

running on ubuntu 14

installer ran upgrade with no errors

[Corentin Méhat]

Hello,

did you checked what was in the log file <jira.home>/log/atlassian-jira.log ?