Iis – way to install SSL certificate on EC2 instances running IIS using ebextentions

Its not possible to use more than one certificate per site in IIS 6 and as far as I am aware the same is true of IIS 7.

If your clients can all use a subdomain of the same domain, you could use a wildcard cert (*.domain.com) to do this. If thats not possible, then a SAN cert would allow multiple domains in one certificate,but if your going to need hundreds of domains, its going to get expensive, and you may reach a limit of how many domains your allowed per cert.

There's nothing to stop you having multiple sites in IIS, all pointing to the same content.

Please add sar -w 1 output. I suppose a number of context switches per second is killing your performance, because there are much more processes running than available processors. I think context switches on a virtual machine are expensive.

If it's true, then there are some kernel tunables that can help you lower number of context switches:

• Check value of systctl kernel.sched_min_granularity_ns. Double it with a command similar to systctl kernel.sched_min_granularity_ns=2000000. Retest. Double it again. Retest. Repeat. Try to find a value which will not cripple interactivity too much but won't allow too many context switches and write it to /etc/sysctl.conf so it will be set at startup.

• Set apache scheduling policy to SCHED_BATCH - start it with chrt -b 0 apache2