[英]How to Upgrading dockerized postgres from 11 to 12
So as the title says i have a dockerized postgres database on a rails app.所以正如标题所说,我在 Rails 应用程序上有一个 dockerized postgres 数据库。 I'm just wondering how i'd go about upgrading the postgres version.
我只是想知道我如何 go 关于升级 postgres 版本。 I havn't done any upgade work before so I'm don't want to lose data.
我以前没有做过任何升级工作,所以我不想丢失数据。
docker-compose file docker-compose文件
postgres:
image: postgres:11.5
ports:
- "5432:5432"
volumes:
- postgres_data:/var/lib/postgresql/data
env_file:
.docker.env
You can use pg_dumpall command for upgrading eg 11.x to 12.x:您可以使用pg_dumpall命令将例如 11.x 升级到 12.x:
docker exec -it <your-old-postgres-container-id> /usr/bin/pg_dumpall -U <postgres-username> backupfile #postgres-username='postgres'
ocker exec -it <new-postgres-container-id> psql < backupfile
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