High availability tips & ideas

[Σταμάτης Κεκές]

 Geia xara se olous kai oles sti lista!
 Edo kai kamposo kairo thelo na stiso ena cluster me 2 web servers opou 
tha exoun kai ftp epano tous gia to upload.
 esto loipon oti o enas exei tin IP 10.0.0.2/24 kai o allos tin 
10.0.0.3/24 kai i floating IP einai i 10.0.0.4/24.
 Mexri stigmis xrisimopoiontas to heartbeat katafera na apo tin proti 
stigmi na exo mai floating IP kai ola ta requests http kai ftp na 
ftanoun ston server kai na douleyei mia xara.
 Otan omos erixna ton "active" server pethainan kai ta connections pou 
eixe kai tin floating IP tin epairne o allos.
 To erotima mou einai to eksis:
 Ksereis kaneis i exei dei kaneis kapoio tropo na ginetai takeover 
transparently diladi xoris na xathoun ta ftp connections ?
 Eyxaristo prokatavolika osous kai oses apantisoun.

 P.S. Oi distro pou exo kaneis tis dokimes mou itan me RH 7.2 kai 8.0, 
Debian Potato kai Woody kai me heartbeat oti teleytaio vrika sto 
linux-ha.org.