[arusstam]

I have same problem on Linux Mint 17. Did you find solution? (except 2.2 + 1.2.6)

[deaconfrost2k]

If you get ajp port 27233 error in apache error.log, your system is not compatible with binaries of mod_cluster 1.3.1

In this case you have to build mod_cluster from source against your system, worked fine for us.