Clustering

[Cheba]

Hello.

I'm rather new to ebb. I've been using mongrel before and I like it.
It's really easy to setup a cluster and use it in production. And I
didn't found anything about ebb clusters. Is there such thing at all?
Or if there is no one how does ebb handle high loads on single
instance?

[ry]

Hi,

> I'm rather new to ebb.

me too:)

> didn't found anything about ebb clusters. Is there such thing at all?
> Or if there is no one how does ebb handle high loads on single
> instance?

No you should be running multiple instances of Ebb behind a load
balancer. You'd just start them on different ports. I do this with
Monit. So I'd have several entries like this in my monitrc file.

check process myApp4000
with pidfile /home/webuser/myApp/current/tmp/ebb.4000.pid
start program = "/usr/bin/ruby /usr/bin/ebb_rails start -d -e
production -p 4000 -P /home/webuser/myApp/current/tmp/ebb.4000.pid -c
/home/webuser/myApp/current" as uid webuser and gid webuser
stop program = "/usr/bin/ruby /usr/bin/ebb_rails stop -P
/home/webuser/myApp/current/tmp/ebb.4000.pid" as uid webuser and gid
webuser
if totalmem > 120.0 MB for 2 cycles then restart
if loadavg(5min) greater than 10 for 8 cycles then restart
group myApp

check process myApp4001
with pidfile /home/webuser/myApp/current/tmp/ebb.4001.pid
start program = "/usr/bin/ruby /usr/bin/ebb_rails start -d -e
production -p 4001 -P /home/webuser/myApp/current/tmp/ebb.4001.pid -c
/home/webuser/myApp/current" as uid webuser and gid webuser
stop program = "/usr/bin/ruby /usr/bin/ebb_rails stop -P
/home/webuser/myApp/current/tmp/ebb.4001.pid" as uid webuser and gid
webuser
if totalmem > 120.0 MB for 2 cycles then restart
if loadavg(5min) greater than 10 for 8 cycles then restart
group myApp

One for each instance. You start the processes independently.

ry