-[[chapter-ha-manager]]
+[[chapter_ha_manager]]
ifdef::manvolnum[]
ha-manager(1)
=============
High Availability
=================
include::attributes.txt[]
-endif::manvolnum[]
-ifdef::wiki[]
:pve-toplevel:
-endif::wiki[]
+endif::manvolnum[]
Our modern society depends heavily on information provided by
computers over the network. Mobile devices amplified that dependency,
* optional hardware fencing devices
+[[ha_manager_resources]]
Resources
---------
a watchdog reset.
+[[ha_manager_fencing]]
Fencing
-------
unresponsive node and as a result a chain reaction of node failures in the
cluster.
+[[ha_manager_groups]]
Groups
------
* *after* you fixed all errors you may enable the service again
+[[ha_manager_service_operations]]
Service Operations
------------------