Postgres - 致命:数据库文件与服务器不兼容

Question

重新启动MacBook Pro后,我无法启动数据库服务器:

could not connect to server: No such file or directory
Is the server running locally and accepting
connections on Unix domain socket "/tmp/.s.PGSQL.5432"?

我检查了日志,然后一遍又一遍地出现以下行:

FATAL:  database files are incompatible with server
DETAIL:  The data directory was initialized by PostgreSQL version 9.2, which is not compatible with this version 9.0.4.

9.0.4是预装在mac上的版本,9.2 [.4]是我通过Homebrew安装的版本.如前所述,这曾经在重启之前工作,所以它实际上不是一个编译问题.我也重新运行initdb /usr/local/var/postgres -E utf8,文件仍然存在.

不幸的是,我对Postgres很新,所以任何帮助都会非常感激.

Answer 1

如果您使用的是Mac并且最近从10.x升级到11,则可以运行以下命令来升级保留所有数据的postgres数据目录:

brew postgresql-upgrade-database

上面的命令取自输出 brew info postgres

Answer 2

如果您正在寻找核选项(删除所有数据并获得新数据库),您可以:

rm -rf /usr/local/var/postgres && initdb /usr/local/var/postgres -E utf8

然后你需要rake db:setup和rake db:migrate您的Rails应用程序重新获得设置.

Answer 3

试试这个:https: //gist.github.com/joho/3735740

它对我来说很完美.最后,它还会生成2个bash脚本来检查您的数据库并删除旧的群集.非常棒.

请参阅:http://www.postgresql.org/docs/9.2/static/pgupgrade.html了解更多信息.

Answer 4

正如@Gowtham提到的，你可以通过执行brew命令来解决这个问题

brew postgresql-upgrade-database 上述命令取自以下命令的输出brew info postgres

但是，在执行之前不要忘记停止 postgres 服务，使用以下命令：`brew services stop postgresql

您可能需要重新启动该服务。

所以最终的命令顺序是：

brew services stop postgresql
brew postgresql-upgrade-database
brew services start postgresql  

Answer 5

在互联网上找到,这个解决方案对我来说很好.

当我在升级到OS X 10.10 Yosemite后尝试启动postgresql服务器时,我遇到了下一个问题:

pg_ctl -D /usr/local/var/postgres -l /usr/local/var/postgres/server.log start

could not connect to server: No such file or directory
Is the server running locally and accepting
connections on Unix domain socket "/var/pgsql_socket/.s.PGSQL.5432"?

好的,让我们来看看服务器日志:

cat /usr/local/var/postgres/server.log

FATAL: database files are incompatible with server
DETAIL: The data directory was initialized by PostgreSQL version 9.2, which is not compatible with this version 9.3.5.

所以,我们需要在升级postgresql后遵循几个步骤:

launchctl unload -w ~/Library/LaunchAgents/homebrew.mxcl.postgresql.plist

mv /usr/local/var/postgres /usr/local/var/postgres92

brew update

brew upgrade postgresql

initdb /usr/local/var/postgres -E utf8

pg_upgrade -b /usr/local/Cellar/postgresql/9.2.3/bin -B /usr/local/Cellar/postgresql/9.3.5_1/bin -d /usr/local/var/postgres92 -D /usr/local/var/postgres

cp /usr/local/Cellar/postgresql/9.3.5_1/homebrew.mxcl.postgresql.plist ~/Library/LaunchAgents/

pg_ctl -D /usr/local/var/postgres -l /usr/local/var/postgres/server.log start

rm -rf /usr/local/var/postgres92

而已.

Answer 6

如果要保留以前版本的postgres，请使用brew switch：

$ brew info postgresql

postgresql: stable 10.5 (bottled), HEAD
Object-relational database system
https://www.postgresql.org/
Conflicts with:
  postgres-xc (because postgresql and postgres-xc install the same binaries.)
/usr/local/Cellar/postgresql/9.6.3 (3,259 files, 36.6MB)
  Poured from bottle on 2017-07-09 at 22:15:41
/usr/local/Cellar/postgresql/10.5 (1,705 files, 20.8MB) *
  Poured from bottle on 2018-11-04 at 15:13:13

$ brew switch postgresql 9.6.3
$ brew services stop postgresql
$ brew services start postgresql

否则，请考虑以下brew命令以迁移现有数据：brew postgresql-upgrade-database。查看源代码。

Answer 7

当在 Docker 中运行新的 Postgres 并且旧卷未更新时，也可能会发生这种情况。

如果您不需要保留数据，最简单的方法是清除 docker 文件夹中的旧卷，在 Linux 中，如下所示：

/var/lib/docker/volumes

Answer 8

与这些答案类似（1、2 ），我的 Postgres 数据库文件在升级到.postgresql 13.3

不幸的是，升级我的 Postgres 数据目录失败。

$ brew postgresql-upgrade-database
...
Setting next OID for new cluster
*failure*

Consult the last few lines of "pg_upgrade_utility.log" for
the probable cause of the failure.
Failure, exiting
Error: Upgrading postgresql data from 12 to 13 failed!
==> Removing empty postgresql initdb database...
==> Moving postgresql data back from /usr/local/var/postgres.old to /usr/local/var/postgres...
Error: Failure while executing; `/usr/local/opt/postgresql/bin/pg_upgrade -r -b /usr/local/Cellar/postgresql@12/12.7/bin -B /usr/local/opt/postgresql/bin -d /usr/local/var/postgres.old -D /usr/local/var/postgres -j 8` exited with 1.

我的解决方法是重新安装postgresql 12.7.

$ brew reinstall postgresql@12
$ brew services start postgresql@12