i've installed plex and after monit but after follow the method describe
check process plexmediaserver with pidfile "/var/lib/plexmediaserver/Library/Application\ Support/Plex\ Media\ Server/plexmediaserver.pid"
start program = "/etc/init.d/plexmediaserver start" with timeout 60 seconds
stop program = "/etc/init.d/plexmediaserver stop"
if failed host 127.0.0.1 port 32400 for 5 cycles then restart if failed port 32401 for 5 cycles then restart
if failed port 32469 for 5 cycles then restart if failed port 1909 for 5 cycles then restart if failed url http://127.0.0.1:32400/web/index.html for 5 cycles then restart
the error execution failed
check process plexmediaserver with pidfile "/var/lib/plexmediaserver/Library/Application\ Support/Plex\ Media\ Server/plexmediaserver.pid"
start program = "/etc/init.d/plexmediaserver start" with timeout 60 seconds
stop program = "/etc/init.d/plexmediaserver stop"
if failed host 127.0.0.1 port 32400 for 5 cycles then restart if failed port 32401 for 5 cycles then restart
if failed port 32469 for 5 cycles then restart if failed port 1909 for 5 cycles then restart if failed url http://127.0.0.1:32400/web/index.html for 5 cycles then restart
the error execution failed