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new 4ea9ca7 host-HA vs VM-HA support (#324)
4ea9ca7 is described below
commit 4ea9ca7618a8e276d1744181fef3a62a5262450b
Author: dahn <[email protected]>
AuthorDate: Wed Jun 21 13:15:31 2023 +0200
host-HA vs VM-HA support (#324)
---
source/adminguide/reliability.rst | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/source/adminguide/reliability.rst
b/source/adminguide/reliability.rst
index 735a81b..05e066c 100644
--- a/source/adminguide/reliability.rst
+++ b/source/adminguide/reliability.rst
@@ -151,6 +151,13 @@ Host in the same cluster.
HA features work with iSCSI or NFS primary storage. HA with local
storage is not supported.
+.. note::
+ HA-Enabled VMs will be restarted when it is detected that the VM is
+ crashed beyond a shadow of a doubt. When the host it is running on is
+ unreachable, either because of network issue or because it is crashed,
+ CloudStack can not be sure the disk image of the VM is not still being
+ accessed and will not restart the VM.
+
Dedicated HA Hosts
------------------
@@ -186,6 +193,11 @@ that you want to dedicate to HA-enabled VMs.
HA-Enabled Hosts
----------------
+.. note::
+ This feature is only applicable to KVM clusters. It is not supported
+ on for instance VMware or Xen. For those hypervisor types, the Host HA
+ is left to the VMware-cluster or Xen-pool respectively.
+
The user can specify a host as HA-enabled, In the event of a host
failure, attemps will be made to recover the failed host by first
issuing some OOBM commands. If the host recovery fails the host will be
