List c-ares tracers in documentation

6 years ago · 85979e9a58
parent 8fd43c2e91
commit 85979e9a58
1 changed files with 3 additions and 0 deletions
--- a/doc/environment_variables.md
+++ b/doc/environment_variables.md
@ -41,6 +41,9 @@ some configuration as environment variables that can be set.
  - bdp_estimator - traces behavior of bdp estimation logic
  - call_combiner - traces call combiner state
  - call_error - traces the possible errors contributing to final call status
+  - cares_resolver - traces operations of the c-ares based DNS resolver
+  - cares_address_sorting - traces operations of the c-ares based DNS
+    resolver's resolved address sorter
  - channel - traces operations on the C core channel stack
  - client_channel - traces client channel activity, including resolver
    and load balancing policy interaction