Re: ZXTM - TCP monitor

Ramesh Natarajan wrote:
> We have a set of backend servers  running  xinetd based proprietary 
> TCP services. We use ZXTM to round robin requests to the backend 
> servers. Currently ZXTM provides TCP based monitors that connect to a 
> port and checks if the service is alive. Since it completes the 3 way 
> handshake, the xinetd service launches the process when the connect 
> happens.

Can ZX TM load a web page and look for a string on that web page? That's 
what we did in our case. We wrote a CGI script that checks the whole 
server health and send back a "thumbs up" string. if the LB sees the 
string then the server stays in the rotation. If not, then it stops 
sending new users there and let's existing connections time out. It 
gives us a great way to let the app owners take their own server out for 
maintenance without having to bother us.
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