Perch watches your websites and APIs, makes sure your cron jobs and backups run, and reads CPU, memory and disk from your servers. Choose the integration that needs the fewest changes for you.
Start with what is easiest. You can mix them — each monitor can use a different one.
Something broke and you have a log file? Upload it and Perch reads nginx, Apache, JSON, syslog and app logs — even zipped — then shows you what failed, how often, and when it started.