Somebody had do it?
In monit documents I found this:
check host redis.host with address 192.168.0.23 if failed port 6379 protocol redis then alert
And googling I found this
check process redis-server with pidfile /var/run/redis/redis-server.pid group redis start program = "/usr/sbin/service redis-server start" stop program = "/usr/sbin/service redis-server stop" if 2 restarts within 3 cycles then timeout if totalmem > 100 Mb then alert
Both works fine but I need to know the value to totalmem becvause 100 Mb is too low.