sip it's probably fine for small servers, the problem is it doesn't have a persistent config available. That means if you optimize it for your server and an update for Enhance comes out, and you run that update, then your optimized config gets set back to default... If I have a big server with 50 CPU and 250gb ram and enough websites to generate 2 million visits per day, then I need the default config to have limits opened wayyyyy up to handle that load smoothly. If I run enhance update and my config is reset, then instantly all sites will be unresponsive due to overloaded resources from the limitations. It may only take me 2 minutes to run through config to re-add my optimal config, but during that time sites won't work, and worse is we don't know how the server will behave under such stress, it could possibly cause CPU consumption to skyrocket as the system tries serving webpages on tiny limits, maybe it would cause catastrophic failure and couldn't even update the config...
That's my worry.
As for logging in to OLS config, I found you have to create a user login in terminal first, this tutorial for example should work:
We can buy the paid version of litespeed that has persistent config, but it's expensive. I would need the $100/mo license or $2k owned license. That's a big expense just to have persistent config, and per server too.
I'm happy with Apache for now, my optimized config has always run really well. I just wish I could change from php-fpm to lsapi, litespeeds php runs fast and doesn't require custom config - it just works., that's half of why I want OLS, just to get ls php.
There's another annoyance with OLS at the moment. Any time you update an htaccess file on a website, you need to restart the webserver for the new htaccess to go into affect on the one website. If you imagine having 200 websites on one server, that's a lot of work just to update htaccess all the time.
So two big issues that prevent using OLS seriously. But on small servers or for dedicated servers that have only 1 client, sure it's fine.