我有一段时间没有升级 Discourse 了，今天尝试升级时，在浏览器中访问 admin/update 时，系统提示一切都是最新的，但显示的仍是 v2.4.0.beta2 +17 版本，而我了解到最新版本是 3.6.0.beta2。
因此，我尝试通过终端使用 ./launcher rebuild app 进行更新，但更新失败，并显示“UPGRADE OF POSTGRES FAILED”（PostgreSQL 升级失败）。我阅读了 支持页面 以及关于 POSTGRES 更新问题的类似帖子中的所有说明，但仍未能解决问题。
我查看了 /var/discourse/shared/standalone/log/var-log/postgres 中的日志，发现了重复的错误消息，例如：
2025-11-19 21:42:13.815 GMT [242] LOG: skipping missing configuration file “/shared/postgres_data/postgresql.auto.conf”
2025-11-19 21:42:13.816 UTC [242] FATAL: data directory “/shared/postgres_data” has wrong ownership
2025-11-19 21:42:13.816 UTC [242] HINT: The server must be started by the user that owns the data directory.
我不明白的一点是，不存在 /shared/postgres_data 目录，而是存在 /shared/standalone/postgres_data。
下面是终端返回的错误消息。如果能就如何使更新正常工作提供一些指导，我将不胜感激。
谢谢，
Nick
Success. You can now start the database server using:
/usr/lib/postgresql/13/bin/pg_ctl -D /shared/postgres_data_new -l logfile start
Ign:1
buster-pgdg InRelease
Ign:2
buster/updates InRelease
Err:3
buster-pgdg Release
404 Not Found [IP: 151.101.67.52 80]
Err:4
buster/updates Release
404 Not Found [IP: 151.101.2.132 80]
Ign:5
buster InRelease
Ign:6
buster-updates InRelease
Err:7
buster Release
404 Not Found [IP: 151.101.2.132 80]
Err:8
buster-updates Release
404 Not Found [IP: 151.101.2.132 80]
Get:9 https://deb.nodesource.com/node_15.x buster InRelease [4,584 B]
Reading package lists...
Reading package lists...
Building dependency tree...
Reading state information...
The following additional packages will be installed:
postgresql-client-10
Suggested packages:
postgresql-doc-10
The following NEW packages will be installed:
postgresql-10 postgresql-client-10
0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
Need to get 6,441 kB of archives.
After this operation, 30.6 MB of additional disk space will be used.
Err:1
buster-pgdg/main amd64 postgresql-client-10 amd64 10.17-1.pgdg100+1
404 Not Found [IP: 151.101.195.52 80]
Err:2
buster-pgdg/main amd64 postgresql-10 amd64 10.17-1.pgdg100+1
404 Not Found [IP: 151.101.195.52 80]
Stopping PostgreSQL 13 database server: main.
check for "/usr/lib/postgresql/10/bin" failed: No such file or directory
Failure, exiting
-------------------------------------------------------------------------------------
UPGRADE OF POSTGRES FAILED
Please visit
for support.
You can run ./launcher start app to restart your app in the meanwhile
FAILED
--------------------
Pups::ExecError: /root/upgrade_postgres failed with return #<Process::Status: pid 50 exit 1>
Location of failure: /pups/lib/pups/exec_command.rb:112:in `spawn'
exec failed with the params "/root/upgrade_postgres"
9f400ba2cca88f79359496e95027cf26c2d5a3672837c5594793cf723585407b
** FAILED TO BOOTSTRAP ** please scroll up and look for earlier error messages, there may be more than one.
./discourse-doctor may help diagnose the problem.