diff --git a/doc/administration/high_availability/nfs.md b/doc/administration/high_availability/nfs.md
index 49ff5d536a1..537f4f3501d 100644
--- a/doc/administration/high_availability/nfs.md
+++ b/doc/administration/high_availability/nfs.md
@@ -2,8 +2,8 @@
 
 ## Required NFS Server features
 
-**File locking**: GitLab **requires** file locking which is only supported
-natively in NFS version 4. NFSv3 also supports locking as long as
+**File locking**: GitLab **requires** advisory file locking, which is only
+supported natively in NFS version 4. NFSv3 also supports locking as long as
 Linux Kernel 2.6.5+ is used. We recommend using version 4 and do not
 specifically test NFSv3.
 
diff --git a/doc/administration/troubleshooting/sidekiq.md b/doc/administration/troubleshooting/sidekiq.md
index 134a7583762..a776cd3f05e 100644
--- a/doc/administration/troubleshooting/sidekiq.md
+++ b/doc/administration/troubleshooting/sidekiq.md
@@ -150,6 +150,14 @@ To output a backtrace from all threads at once:
 apply all thread bt
 ```
 
+Once you're done debugging with `gdb`, be sure to detach from the process and
+exit:
+
+```
+detach
+exit
+```
+
 ## Check for blocking queries
 
 Sometimes the speed at which Sidekiq processes jobs can be so fast that it can