Ubuntu Pound Reverse Proxy Load Balancing Based off active server load?
- by Andrew
I have Pound installed on a loadbalancer. It seems to work okay, except that it randomly assigns the backend server to forward the request to. I've put 1 backend machine under so much load that it went into using swap, and I can't even ssh into it to test this scenareo. I would like the loadbalancer to realize that the machine is overloaded, and send it to a different backend machine. However it doesn't. I've read the man page and it seems like the directive "DynScale 1" is what would monitor this, but it still redirects to the overloaded server. I've also put in "HAport 22" to the backend figuring since I can't ssh in, neither could the loadbalancer and it would consider the backend server dead until it gets rid of the load and responds, but that didn't help either.
If anyone could help with this, I'd appreciate it. My current config is below.
######################################################################
## global options:
User "www-data"
Group "www-data"
#RootJail "/chroot/pound"
## Logging: (goes to syslog by default)
## 0 no logging
## 1 normal
## 2 extended
## 3 Apache-style (common log format)
LogLevel 3
## check backend every X secs:
Alive 5
DynScale 1
Client 1200
TimeOut 1500
# poundctl control socket
Control "/var/run/pound/poundctl.socket"
######################################################################
## listen, redirect and ... to:
## redirect all requests on port 80 to SSL
ListenHTTP
Address 192.168.1.XX
Port 80
Service
Redirect "https://xxx.com/"
End
End
ListenHTTPS
Address 192.168.1.XX
Port 443
Cert "/files/www.xxx.com.pem"
Service
BackEnd
Address 192.168.1.1
Port 80
HAport 22
End
BackEnd
Address 192.168.1.2
Port 80
HAport 22
End
End
End
