[CentOS] KVM HA

[John R Pierce]

On 6/22/2016 11:06 AM, Digimer wrote:
> I know this goes against the
> grain of sysadmins to yank power, but in an HA setup, nodes should be
> disposable and replaceable. The nodes are not important, the hosted
> services are.

of course, the really tricky problem is implementing an ISCSI storage 
infrastructure thats fully redundant and has no single point of 
failure.   this requires the redundant storage controllers to have 
shared write-back cache, fully redundant networking, etc.   The 
fiberchannel SAN folks had all this down pat 20 years ago, but at an 
astronomical price point.

The more complex this stuff gets, the more points of potential failure 
you introduce.





-- 
john r pierce, recycling bits in santa cruz