[mistwang]

Originally Posted by DraCoola

i have experiencing that with cloudlinux boxes only.
is that possible if 503 page which generated by cloudlinux will automatically restarting by lsws (Auto Fix 503 Error)?

because so many "restarts automatically to fix 503 Errors" emails came from lsws with clouddlinux until now.

Can you switch back to 4.1.13 and see if you get 503 errors as well?
I have noticed on one customer's server using cloudlinux, that lsphp5 processes was killed by signal 9, which causes 503 errors, not sure who send signal 9. I wonder if it is caused by cloudlinux update or not.