Let's attempt to build a server cluster system with 2 - 3 nodes. The
point of this will be to provide high availability -- i.e. any one of
the server cluster nodes can go down without notice and it won't
affect any of its services.
This should be done with some opensource GPL distributed file system and no
special hardware shared storage.
The list of services include
dhcp
dns
tftp
nfs
ftp
http
network gateway - iptables firewall / gShield
ISP connection via dialup
The server nodes should not have to be too similar in their
hardware configuration.
Since this will be a type of gateway, then there should be
2 NICs in each system and at least 2 modems in this pool
of servers (if configuring for dialup redundancy). The 2nd
NIC could lead either to a higher network or to the internet.
We will start with installing RHL80 on each of the server nodes.
Each of these boxes will get their own ip address.
They will share a common "failover" ip address through the use of
LVS -- ip failover. This should make use of "heartbeat" as will
to detect when one of the other nodes goes down.
To be completed when I have the time to implement and test.
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