私有部署seafile，一直使用正常，今天访问突然提示502 Bad Gateway
seahub.error.log部分内容如下：2023/03/01 15:51:16 [error] 48#48: *1594 connect() failed (111: Connection refused) while connecting to upstream, client: 19.100.19.42, server: 19.100.2.118, request: “GET /api2/repos/ HTTP/1.1”, upstream: “http://127.0.0.1:8000/api2/repos/”, host: “19.100.2.118:8001”
seahub.log部分内容如下：
django.db.utils.OperationalError: (2003, “Can’t connect to MySQL server on ‘db:3306’ (111)”)
似乎是数据库链接不上？这应该怎么处理呢？