Jeff Peng wrote: > Hi Henrik, > > We also use LVS + Squid setup. > But what I want to know is, if we have only two squid for reverse proxy, > can we setup only heartbeat for HA? (I mean don't use LVS). > Thanks again. > > If you just want to have a failover and the cache content is not that important you can just leave the two squid's running and just migrate the IP addresses using heartbeat. To do that, you need an extra internal and an extra external address that is not used by one of the systems. You then tell HA to use these addresses. You two servers, connected by a serial cable and/or a dedicated ethernet connection, decide on which server it runs the IPs. If you restrict yourself to migrating IPs you should be able to configure such a setup using the tutorials on linux-ha.org. But I advise again to use a test setup for this as you _will_ make initial configuration errors and you are playing with your internet access. It does not make sense to post HA configs here as a) we go offtopic and b) the HA config files (XML) are never edited directly, but managed by CLI tools or a GUI.
