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ha-manager.adoc: improve requirements section
author
Dietmar Maurer
<dietmar@proxmox.com>
Sun, 20 Nov 2016 14:05:39 +0000
(15:05 +0100)
committer
Dietmar Maurer
<dietmar@proxmox.com>
Sun, 20 Nov 2016 14:05:39 +0000
(15:05 +0100)
ha-manager.adoc
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diff --git
a/ha-manager.adoc
b/ha-manager.adoc
index
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793515e
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--- a/
ha-manager.adoc
+++ b/
ha-manager.adoc
@@
-105,15
+105,20
@@
hard and costly. `ha-manager` has typical error detection and failover
times of about 2 minutes, so you can get no more than 99.999%
availability.
+
Requirements
------------
+You must meet the following requirements before you start with HA:
+
* at least three cluster nodes (to get reliable quorum)
* shared storage for VMs and containers
* hardware redundancy (everywhere)
+* use reliable “server” components
+
* hardware watchdog - if not available we fall back to the
linux kernel software watchdog (`softdog`)