"Repost" Linux system nginx load balancer 404 error handling method

Nginx Load Balancer 404 error handling method

Use Nginx to achieve load balancing, but the data of a group of servers is not implemented synchronization, the master server has data to be synchronized to other servers for a period of time upstream image.stream.com {server 192.168.1.25:8088;server 192.168.1.24:8088;server 192.168.1.23:8088;} When a user accesses a picture, there is a 60% chance that the file will not be found. Question: How to configure the following functions: 1. When the picture server is connected, if the machine is not in 24,23, the default option is to return another 25?
Workaround:
Proxy_next_upstream Error timeout Invalid_header http_500 http_503 http_404; Original address: http://www.2cto.com/os/201204/126368.html