CSS: check the avalablity real server

[shibindong]

we deployed layer 2 CSS for load balance, and it just basic configuration. does the basic configuration can detect 1 real server down and auto switch to another server?

If not, what configuration we need to make sure:

if user request been redirect to server 1;

server 1 down while user connecting to it;

CSS detects it and forward the request to server 2.

[Gilles Dufour]

There is automatic icmp probe.

If your server stops responding to ping request, the CSS will consider it is down.

You can adjust the probe to sth else - like http probe - using the keepalive command.

If a request is sent to a server that has not yet been detected a down, there is no automatic redirect.

The client connection will fail and when the client will attempt a new connection it will be sent to the other server.

Gilles.