Nginx http upstream check status

Check upstream server number: 4, generation: 34

Index Upstream Name Status Rise counts Fall counts Check type Check port
0 blog 127.0.0.1:8071 down 0 3169866 http 0
1 blog 127.0.0.1:8072 up 920 0 http 0
2 web 127.0.0.1:8091 down 0 3172404 http 0
3 web 127.0.0.1:8092 up 11171 0 http 0