add docker upgrade tag doc

6 years ago · 9081b3f914
1 changed files with 6 additions and 0 deletions
--- a/docs/upgrades.md
+++ b/docs/upgrades.md
@ -92,6 +92,12 @@ These commands are useful only for upgrading fully-deployed, healthy, existing
 hosts. This will definitely not work for undeployed or partially deployed
 hosts.

+Upgrade docker:
+
+```
+ansible-playbook -b -i inventory/sample/hosts.ini cluster.yml --tags=docker
+```
+
 Upgrade etcd:

 ```