sonarqube5.6 - SonarQube :: Current version is too old. Please upgrade to Long Term Support version firstly

Question

I downloaded sonarqube-5.6 and configured the sonar.properties . My mysql version is 5.6 and java version is 1.8. when I start sonar getting error current version is too old , while my sonar is 5.6. Here is error log and sonar.properties

 2016.08.03 18:30:13 INFO  web[o.s.s.p.ServerImpl] SonarQube Server / 5.6 / 074f3d1169f9688d15af4aff67e7e672cbeed782
    2016.08.03 18:30:13 INFO  web[o.sonar.db.Database] Create JDBC data source for jdbc:mysql://localhost:3306/sonar?useUnicode=true&characterEncoding=utf8&rewriteBatchedStatements=true&useConfigs=maxPerformance
    2016.08.03 18:30:13 ERROR web[o.a.c.c.C.[.[.[/sonar]] Exception sending context initialized event to listener instance of class org.sonar.server.platform.PlatformServletContextListener
    org.sonar.api.utils.MessageException: Current version is too old. Please upgrade to Long Term Support version firstly.

Sonar.properties

sonar.jdbc.username=sonar
sonar.jdbc.password=sonar
sonar.jdbc.url=jdbc:mysql://localhost:3306/sonar?useUnicode=true&characterEn
coding=utf8&rewriteBatchedStatements=true&useConfigs=maxPerformance

Edit ::

Please note I am using 5.6 version which is latest as per http://docs.sonarqube.org

Link says "you must first upgrade to 4.5.x - I'd recommend 4.5.7 - and then upgrade to 5.3." . I am not getting this , should I install lower version fist and upgrade it 5.6 or what

Answer 1

Version 5.6 can't be upgraded from a version previous to 4.5.x. It seems to be your case, so you should first upgrade to 4.5.x (the latest 4.5.7 is recommended) then upgrade to 5.6.