问题标签 [pg-upgrade]

I'm about upgrade a quite large PostgreSQL cluster from 9.3 to 11.

The upgrade

The cluster is approximately 1,2Tb in size. The database has a disk system consisting of a fast HW RAID 10 array of 8 DC-edition SSDs with 192GB ram and 64 cores. I am performing the upgrade by replicating the data to a new server with streaming replication first, then upgrading that one to 11.

I tested the upgrade using pg_upgrade with the --link option, this takes less than a minute. I also tested the upgrade regularly (without --link) with many jobs, that takes several hours (+4).

Questions

Now the obvious choice is of cause for me to use the --link option, however all this makes me wonder - is there any downsides (performance or functionality wise) to using that over the regular slower method? I do not know the internal workings of postgresql data structures, but I have a feeling there could be a performance difference after the upgrade between rewriting the data entirely and to just using hard links - whatever that means?

Considerations

The only thing I can find in the documentation about the drawbacks of --link is the downside of not being able to access the old data directory after the upgrade is performed https://www.postgresql.org/docs/11/pgupgrade.htm However that is only a safety concern and not a performance drawback and doesn't really apply in my case of replicating the data first. The only other thing I can think of is reclaiming space, with whatever performance upsides that might have. However as I understand it, that can also be achieved by running a VACUUM FULL DATABASE (or CLUSTER?) command after the --link-upgraded database has been upgraded? Also the reclaiming of space is not very impactful performance wise on an SSD as I understand.

I appreciate if anyone can help cast some light into this.

试图找到从PostgreSQL 10.6到的迁移路线postgreSQL 11.1。

使用pg_upgrade, 从两个版本中，给我错误。我认为从中11.1可以将过时的表格带入货币：

从10.6，预期结果，因为它看不到正向结构：

如何迁移表以11.1正确使用版本？我假设后一个版本是要使用的版本，并且我的目录是有效的。

我似乎被夹在两个操作之间，既pg_upgrade要更改PostgreSQL主要版本，pg_ctl又要控制old cluster.

我试图重命名/usr/local/var/postgres/postgresql.pid，但这并没有解决任何问题。文档说我可以pg_ctl用来关闭邮局主管，但这不起作用：

所以不关闭postmaster就无法升级版本，而关闭postmaster需要初始化新版本。我被抓住了。任何关于我如何开始11.1工作的见解都值得赞赏。

更新

尝试处理旧版本后更新日志显示如下：

我正在尝试将 postgres-9.3 升级到 postgres-10，数据库大小约为 165GB。我正在使用“sudo pg_upgradecluster 9.3 main”来执行此操作，但这需要大约 8 小时，这对于我的实时 web 应用程序来说停机时间太长了。任何建议以减少停机时间和更快地使其更好。

我想将postgresql 9.1数据库升级到postgresql 11。首先我想从pg11服务器用pg_dump获取远程pg9.1服务器上的数据做一个实验。如何使用新的 pg_dump 将远程服务器上的数据库复制到新服务器。

以下代码使用旧的 pg_dump 并且它不起作用。

ssh user @ remote_machine "pg_dump -U dbuser -h localhost -C --column-inserts" \ >> backup_file_on_your_local_machine.sql

我安装了带有 Timescale 1.1.1 共享库的 Postgresql 9.6.11。我正在尝试升级它们，使用 Timescale 和pg_upgradePostgres 的就地升级，即 Postgresql 到 11.5 和 Timescale 到 1.4。我应该先升级哪个？我首先成功地升级了 Timescale，然后我尝试继续使用 pg_upgrade，但我遇到了错误 pg_restore: [archiver (db)] Error from TOC entry 1012; 1259 24224 TABLE cache_inval_extension 我想知道我是否应该安装带有 Timescale 1.1.1 的 Postgresql 11.5。然后使用 pg_upgrade 然后就地时间尺度。

未回答问题的副本：

CentOS 7 pg_upgrade 权限错误

尝试运行 pg_upgrade 时，它​​不会让我以 root 身份运行该命令。从root退出时，由于权限，它无法访问文件。如何解决？

我正在运行的命令：

以 root 身份运行命令时出现错误消息：

不以 root 身份运行命令时的错误消息：

还尝试以 postgres 用户身份运行命令

I used this https://github.com/tianon/docker-postgres-upgrade to upgrade postgres from 11 to 12 version & facing issue while upgrade, got error - "postmaster servicing the old cluster"

Here using docker container for 11 & 12 in separately, also scale down docker service before that upgarde, but not sure why this postmaster issue came & how to fix this.??

Above docker run cmd part of logs:--

Thank you in advance.

尝试使用https://github.com/tianon/docker-postgres-upgrade从 11 升级到 12 时- 弹出以下错误：

日志：----

知道为什么会这样吗？或者是那个开放的错误。？解决方法是什么。？

我需要一些帮助，我正在 Windows 上将 postgresql 从 v10 升级到 v11，但收到以下错误消息：could not open version file: C:/Program Files/PostgresSQL/11/data/PG_VERSION.

以下是采取的步骤：

1. 使用停止 PostgresSQL v10 和 PostgresSQL v11 服务

   /li>

2. 为 v10 和 v11 的用户设置完全访问控制/完整权限。

3. 创建具有完全管理员权限的“postgres”用户帐户。

4. 打开命令行并输入

   提示输入用户 postgres 用户的密码。

5. 新的命令行窗口打开并 cd 到 'C:\Program Files\PostgreSQL\11'。

6. 输入以下内容：

按回车键我得到上述错误。

我对使用 PostgreSQL 的整个过程很陌生。

对出了什么问题有任何想法吗？