doc: document additional journal args in cephadm logs command

Signed-off-by: Adam King <adking@redhat.com>
(cherry picked from commit 5224c5baf43d057ba54d5cfcb7efdfad91efa3fa)

diff --git a/doc/man/8/cephadm.rst b/doc/man/8/cephadm.rst
index 76795a32387907e50cf29d24d2d5cf0e4e10f7d1..7a2473485929becda8d4350cdd831da3c4129550 100644 (file)
--- a/doc/man/8/cephadm.rst
+++ b/doc/man/8/cephadm.rst
@@ -368,6 +368,21 @@ This is similar to::
 
     journalctl -u mgr.myhost.ysubfo
 
+Can also specify additional journal arguments::
+
+    cephadm logs --name mgr.myhost.ysubfo -- -n 20 # last 20 lines
+    cephadm logs --name mgr.myhost.ysubfo -- -f # follow the log
+
+
+Positional arguments:
+
+* [command]               command (optional)
+
+Arguments:
+
+* [--fsid FSID]           cluster FSID
+* [--name NAME, -n NAME]  daemon name (type.id)
+
 
 prepare-host
 ------------