I keep receiving an error on my Ubuntu 16.04 server with PHP 7 FPM
ERROR: fork() failed: Resource temporarily unavailable (11)
Which results in none of my sites working with a 502 error.
NOTE: I am using the ondrej repo for php7, and have the following modules installed (if it helps any....)
php7.0-fpm php7.0-cli php7.0-curl php7.0-gd php7.0-intl php7.0-mysql php7.0-json php7.0-sqlite3 php7.0-opcache php-memcached php-pear
And utilize nGinx
How can I fix this?