diff options
| -rw-r--r-- | src/rabbit_lager.erl | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/src/rabbit_lager.erl b/src/rabbit_lager.erl index c1ed613088..fdc50e8b50 100644 --- a/src/rabbit_lager.erl +++ b/src/rabbit_lager.erl @@ -182,9 +182,15 @@ configure_lager() -> end, case application:get_env(lager, log_root) of undefined -> - application:set_env(lager, log_root, - application:get_env(rabbit, lager_log_root, - undefined)); + %% Setting env var to 'undefined' is different from not + %% setting it at all, and lager is sensitive to this + %% difference. + case application:get_env(rabbit, lager_log_root) of + {ok, FromRabbitConfig} -> + application:set_env(lager, log_root, FromRabbitConfig); + _ -> + ok + end; _ -> ok end, |