If your framework is already on Linux - then leave it there.

It really leaves you with 4 options.
1. learn to admin Linux
2. Find a local college kid or other freelance linux guru/admin
3. Use your hosts hourly rate to fix things ( if they provide it)
4. Use managed services - There is a premium for this service, but may be worth it. (3x-10x more expensive)

I've programmed and admin'ed Unix for over 10 years, but I've learned that to do better in my own business, I need to be more "hands-off", and am looking into managed services (option #4)

Each of the options has pro's and con's, some are cheaper than others, while others are a better value.

Don't confuse value with cost. They are distinctly different.

There is no easy option, but if you have 1000 paying clients, then you really have 1000 reasons to push towards the better value, and not worry so much about price, and be creative with keeping things profitable.

Just my 2 pennies.

Matthew Kettlewell