fail_timeout 设成 0 了，换个 10s 看看

试了，错误信息还是一样的

upstream 里 fail_timeout 去掉

我原来都没加上去，去掉了也一样

这个是不是有问题

puma 配置贴出来

这是 puma.rb

• 问题应该是档案目录权限不足，不要把 rails project 放在 /root 底下。因为 你的 nginx 执行的 user 是 "nginx" 不是 root。nginx 无法到你的 /root/new_car/shared/sockets/puma.sock 当然一直说读取不到。你看 nginx error.log 或者 /var/log/message (centos) 或者 /var/log/syslog (ubuntu) 应该可以看到权限不足的讯息

• 解法

~ # mv /root/new_car /opt/new_car
# cd /opt/new_car
# puma
# chmod 777 /opt/new_car/shared/sockets/puma.sock

nginx config upstream ---> /opt/new_car/shared/sockets/puma.sock

• 当然这是解决了 nginx , proxy pass 的问题，但 production 的话，应该会另外建立一个 user for puma server 才对，不太会用 root 执行 puma server

• Hope this will help.
  • FYI
    • puma config
      • https://github.com/charlietag/os_preparation/blob/master/templates/F_02_PKG_06_ruby_09_redmine_create/user_home/web_sites/redmine/config/puma/production.rb
    • nginx config
      • https://github.com/charlietag/os_preparation/blob/master/helpers_views/helper_nginx_site_config/etc/nginx/rails_sites/sample-rails.conf
      • https://github.com/charlietag/os_preparation/blob/master/templates/F_02_PKG_02_nginx_02_setup_base/etc/nginx/rails_conf/rails_locations.conf
    • puma-mgr
      • https://github.com/charlietag/os_preparation/blob/master/templates/F_02_PKG_06_ruby_08_setup_systemd_puma/usr/local/bin/puma-mgr
    • Rails log rotated
      • https://github.com/charlietag/os_preparation/blob/master/templates/F_02_PKG_06_ruby_07_setup_rails_logrotate/etc/logrotate.d/rails

谢谢，已经成功解决了