[Linux-HA] Is this heartbeat scenario possible ?
boris.berger at capgemini.com
Thu Mar 3 09:16:06 MST 2005
I am new to this list, I have just discovered the Linux-HA project. I am
interested in heartbeat capabilities, and I wanted to know if the following
scenario is possible :
I would like to distribute some applications on two servers. These two
have to be seen as TWO servers (this means seen through 2 IP addresses).
When one server fails, the second takes back the applications of the first
and has to be seen as TWO servers. This means there is no one master and one
- In normal operation :
Server 1 :
- Virtual IP 1
- services A, B and C running.
Server 2 :
- Virtual IP 2
- services D, E and F running.
A, B and C are addressed through IP1
D, E and F are addressed through IP2
- Fallback mode (fault on server 1) :
server 2 :
- virtual IP 1 and virtual IP 2
- services A, B, C, D, E and F running.
A, B and C remain addressed through IP1
D, E and F remain addressed through IP2
I have no problem with data sharing. A SAN should be used
for data storage. The only constraint is that a service should
not run simultanously on server 1 and server 2.
Is this scenario possible with heartbeat? If it is not, can we imagine
two differents heartbeat mechanisms :
- heartbeat 1 : monitors A, B and C. Master on server 1, slave on server 2.
manages the virtual IP 1.
- heartbeat 2 : monitors D, E and F. Slave on server 1, master on server 2.
manages the virtual IP 2.
Thank you for your help,
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