Nginx http upstream check status

Check upstream server number: 4, generation: 61

Index Upstream Name Status Rise counts Fall counts Check type Check port
0 blog 127.0.0.1:8071 up 1712314 0 http 0
1 blog 127.0.0.1:8072 down 0 1891924 http 0
2 sharding 127.0.0.1:8011 down 0 333620 http 0
3 sharding 127.0.0.1:8012 up 300979 0 http 0