Coldfusion AMI in EC2: how to add more web servers?

[mistermaikcr1]

Hi,

I am currently running an instance of the Coldfusion AMI with linux.

I want to keep that instance and launch 2 more web servers (independent machines) that point to the coldfusion application server.

How can I do this with apache , tomcat, etc?

[pete_freitag]

If you are looking to have just two additional web servers and a single CF server - you can launch two more linux server instance (does not need to be a ColdFusion AMI, you can use the Amazon Linux AMI for example).

Then copy the contents of the /opt/coldfusion10/config/wsconfig/1/ folder over to the new linux servers.

In that directory edit the workers.properties file and change the line that says

worker.cfusion.host=localhost

To something like this:

worker.cfusion.host=ip.of.your.cf.server

Make sure the firewalls allow traffic to the port specified in this file from the web servers.

Next copy the /etc/httpd/conf/mod_jk.conf file from the CF server on to the web server, and add that to you httpd.conf (eg add Include mod_jk.conf, or put the file in a conf.d folder).

I think all that should work -- I haven't tested it. For security you might want to make sure you have setup a connector shared secret, see the CF10 Lockdown guide for instructions on setting that up.

--

Pete Freitag

Foundeo Inc.

ColdFusion Consulting & Products (FuseGuard, HackMyCF)

[mistermaikcr1]

Hi Peter,

Your answer is right, it did work, just the file location for mod_jk.conf is in /etc/apache2/mod_jk.conf.

Now I am going to the next step:

     - instead of 1 single CF instance I need 2 of them in a Cluster.

I did it work locally in my machine using static membershit configuration, because multicasting is not allowed in EC2.

If a follow you, I need to create the cluster and move the config to apache again, but in this case registering 2 more workers: the cluster as load balancer and the remote instance?

I am confuse about the main instance. It is a single point of failure? because I'll point the external apache web server to the IP of the cluster right?

Here is my workers file:

worker.list=CFCluster01

worker.CFCluster01.type=lb

worker.CFCluster01.balance_workers=cfusion,cfusion2

worker.CFCluster01.sticky_session=false

worker.cfusion.type=ajp13

worker.cfusion.host= MyIP1

worker.cfusion.port=8012

worker.cfusion.max_reuse_connections=250

worker.cfusion2.type=ajp13

worker.cfusion2.host= MyIP2

worker.cfusion2.port=8012

worker.cfusion2.max_reuse_connections=250