Nginx http upstream check status

Check upstream server number: 3, generation: 5

Index Upstream Name Status Rise counts Fall counts Check type Check port
0 app 127.0.0.1:8081 up 338087 0 http 0
1 app 127.0.0.1:8082 up 338242 0 http 0
2 test 127.0.0.1:8080 down 0 74651 http 0