Comment 3 for bug 1999611

I don't see any interesting here, in the scope of syslog-ng. These lines are generated by a process 'thermald'. Syslog-ng only writes it to a file, according with your config.

Back to your original question: from the documantation of file destination:

If the expanded filename refers to a directory which does not exist, it will be created depending on the create-dirs() setting (both global and a per destination option).
default is no for create-dirs()

I suggest to use: create_dirs(yes) perm(0644) dir-perm(0775)

please close this case, this platform is not for syslog-ng support.