upstream 127.0.0.1 {
server 127.0.0.1:8080 max_fails=2 fail_timeout=30s weight=1;
server 127.0.0.1:8081 max_fails=2 fail_timeout=30s weight=100;
server 127.0.0.1:8080 max_fails=2 fail_timeout=30s weight=1;
server 127.0.0.1:8081 max_fails=2 fail_timeout=30s weight=100;
}
max_fails最大失败次数
weight权重