数据库用户"postgres"不是安装用户

Question

我正在尝试将postgres从9.5升级到9.6. brew upgrade postgresql成功,但在跑步时

pg_upgrade -b /usr/local/Cellar/postgresql/9.5.3/bin/ -B /usr/local/Cellar/postgresql/9.6.1/bin/ -d /usr/local/var/postgres -D /usr/local/var/postgres9.6 -U postgres

我收到一个错误

Performing Consistency Checks
-----------------------------
Checking cluster versions                                   ok
Checking database user is the install user
database user "postgres" is not the install user
Failure, exiting

当没有-U postgres在最后尝试它甚至更奇怪

Performing Consistency Checks
-----------------------------
Checking cluster versions                                   ok
Checking database user is the install user                  ok
Checking database connection settings                       ok
Checking for prepared transactions                          ok
Checking for reg* system OID user data types                ok
Checking for contrib/isn with bigint-passing mismatch       ok
Checking for roles starting with 'pg_'                      ok
Creating dump of global objects                             ok
Creating dump of database schemas
                                                            ok
Checking for presence of required libraries                 ok
Checking database user is the install user
database user "dimid" is not the install user

那怎么来的

Checking database user is the install user                  ok

Answer 1

旧的 PostgreSQL 集群显然是用

initdb -U dimid

但是新集群是由不同的超级用户安装的。

您必须使用与旧集群相同的超级用户名创建新集群。

Answer 2

特别是对于自制的 postgresql 安装，initdb 的默认用户是 $USER——所以如果你最初只是按照说明进行操作并执行类似的操作

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

安装用户是您的 Unix 用户名。就我而言，它是 'rob'，所以只需在 pg_upgrade 中添加 '-U rob' 也可以：

pg_upgrade -b /usr/local/Cellar/postgresql/9.5.4_1/bin -B /usr/local/Cellar/postgresql/9.6.2/bin -d /usr/local/var/postgres95 -D /usr/local/var/postgres -U rob