+Updates
+~~~~~~~
+When updating the ha-manager you should do one node after the other, never
+all at once. Further you have to ensure that no service located at the node
+is in the error state, a node with erroneous service is not able to be upgraded
+and if tried nonetheless it may even trigger a Node reset when doing so!
+When dealing with erroneous services first check what happened to them, then
+bring them in a secure state, after that disable or remove them from HA.
+Only after that you may start upgrading a Nodes LRM and CRM.
+