On Jul 5, 2015, at 10:50 PM, Todd L Miller <tlmiller@xxxxxxxxxxx> wrote: It'd also be helpful to know how you're specifying the new 8.3.6 collector on the old 8.3.5 client. (What was COLLECTOR_HOST for 118, what is the COLLECTOR_HOST for 121?) Hi Todd, there is small misunderstanding. Let me clarify. Now I have 4 VMs , 2 run old 8.3.5, 2 run 8.3.6 . Lets focus on 8.3.6 , IP121 & 122. IP=121 is condor head: [cosy11@oswrk121 ~]$ condor_version $CondorVersion: 8.3.6 Jun 21 2015 BuildID: 325064 $ $CondorPlatform: X86_64-RedHat_6.6 $ IP=122 is condor worker: [cosy11@oswrk122 ~]$ condor_version $CondorVersion: 8.3.6 Jun 21 2015 BuildID: 325064 $ $CondorPlatform: X86_64-RedHat_6.6 $ both run 8.3.6. I do not intend to mix 2 condor version. I’d love to have 8.3.6 working. The log files posted here are only for IP=121 & 122 Sorry for the confusion (and I hope you can help me) Jan |