我正在尝试从10 12升级postgres服务器，并且编码有问题。我正在遵循我认为已建立的配方。
看哪：
postgres@serverbot:~$ psql -l
List of databases
Name | Owner | Encoding | Collate | Ctype | Access privileges
-------------+----------+-----------+---------+-------+-----------------------
postgres | postgres | SQL_ASCII | C | C |
template0 | postgres | SQL_ASCII | C | C | =c/postgres +
| | | | | postgres=CTc/postgres
template1 | postgres | SQL_ASCII | C | C | postgres=CTc/postgres+
| | | | | =c/postgres
thingsboard | postgres | SQL_ASCII | C | C | =Tc/postgres +
| | | | | postgres=CTc/postgres+
| | | | | nagios=c/postgres
(4 rows)
注意10数据库上的编码。是时候为12创建数据库了。
postgres@serverbot:~$ sudo service postgresql stop
postgres@serverbot:~$ /usr/lib/postgresql/12/bin/initdb -E SQL_ASCII --locale=C -D /var/lib/postgresql/12/data
The files belonging to this database system will be owned by user "postgres".
This user must also own the server process.
The database cluster will be initialized with locale "C".
The default text search configuration will be set to "english".
Data page checksums are disabled.
creating directory /var/lib/postgresql/12/data ... ok
creating subdirectories ... ok
selecting dynamic shared memory implementation ... posix
selecting default max_connections ... 100
selecting default shared_buffers ... 128MB
selecting default time zone ... America/New_York
creating configuration files ... ok
running bootstrap script ... ok
performing post-bootstrap initialization ... ok
syncing data to disk ... ok
initdb: warning: enabling "trust" authentication for local connections
You can change this by editing pg_hba.conf or using the option -A, or
--auth-local and --auth-host, the next time you run initdb.
Success. You can now start the database server using:
/usr/lib/postgresql/12/bin/pg_ctl -D /var/lib/postgresql/12/data -l logfile start
太好了！让我们启动新服务器。
postgres@serverbot:~$ /usr/lib/postgresql/12/bin/pg_ctl -D /var/lib/postgresql/12/data -l logfile start
waiting for server to start.... done
server started
并验证编码...
postgres@serverbot:~$ psql -l
List of databases
Name | Owner | Encoding | Collate | Ctype | Access privileges
-----------+----------+-----------+---------+-------+-----------------------
postgres | postgres | SQL_ASCII | C | C |
template0 | postgres | SQL_ASCII | C | C | =c/postgres +
| | | | | postgres=CTc/postgres
template1 | postgres | SQL_ASCII | C | C | =c/postgres +
| | | | | postgres=CTc/postgres
(3 rows)
万事俱备...该升级了！
postgres@serverbot:~$ /usr/lib/postgresql/12/bin/pg_upgrade \
--old-datadir=/var/lib/postgresql/10/main \
--new-datadir=/var/lib/postgresql/12/main \
--old-bindir=/usr/lib/postgresql/10/bin \
--new-bindir=/usr/lib/postgresql/12/bin \
--old-options '-c config_file=/etc/postgresql/10/main/postgresql.conf' \
--new-options '-c config_file=/etc/postgresql/12/main/postgresql.conf' \
--link --check
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* data types in user tables ok
Checking for contrib/isn with bigint-passing mismatch ok
Checking for tables WITH OIDS ok
Checking for invalid "sql_identifier" user columns ok
encodings for database "postgres" do not match: old "SQL_ASCII", new "UTF8"
Failure, exiting
postgres@serverbot:~$
Do！
这是怎么了？我断言编码确实匹配，并且被卡住了。
有人可以提供任何建议吗？
答案 0 :(得分：3)
我看到的是：
postgres@serverbot:~$ /usr/lib/postgresql/12/bin/pg_ctl -D /var/lib/postgresql/12/data -l logfile start
waiting for server to start.... done
server started
然后：
postgres@serverbot:~$ /usr/lib/postgresql/12/bin/pg_upgrade \
--old-datadir=/var/lib/postgresql/10/main \
--new-datadir=/var/lib/postgresql/12/main \
[...]
请注意$PGDATA目录。您为initdb做的数据库集群与您对pg_upgrade做的数据库集群不同。
更新。由于您似乎使用的是基于Debian的OS，并且使用的是Postgres打包，因此最好使用打包工具：
sudo pg_createcluster --locale=C 12 ascii
Creating new PostgreSQL cluster 12/ascii ...
/usr/lib/postgresql/12/bin/initdb -D /var/lib/postgresql/12/ascii --auth-local peer --auth-host md5 --locale C
The files belonging to this database system will be owned by user "postgres".
This user must also own the server process.
The database cluster will be initialized with locale "C".
The default database encoding has accordingly been set to "SQL_ASCII".
The default text search configuration will be set to "english".
Data page checksums are disabled.
fixing permissions on existing directory /var/lib/postgresql/12/ascii ... ok
creating subdirectories ... ok
selecting dynamic shared memory implementation ... posix
selecting default max_connections ... 100
selecting default shared_buffers ... 128MB
selecting default time zone ... America/Los_Angeles
creating configuration files ... ok
running bootstrap script ... ok
performing post-bootstrap initialization ... ok
syncing data to disk ... ok
Success. You can now start the database server using:
pg_ctlcluster 12 ascii start
Ver Cluster Port Status Owner Data directory Log file
12 ascii 5434 down postgres /var/lib/postgresql/12/ascii /var/log/postgresql/postgresql-12-ascii.log
postgres=# \l
List of databases
Name | Owner | Encoding | Collate | Ctype | Access privileges
-----------+----------+-----------+---------+-------+-----------------------
postgres | postgres | SQL_ASCII | C | C |
template0 | postgres | SQL_ASCII | C | C | =c/postgres +
| | | | | postgres=CTc/postgres
template1 | postgres | SQL_ASCII | C | C | =c/postgres +
| | | | | postgres=CTc/postgres
(3 rows)
我也将使用pg_upgradecluster，有关更多信息，请参见here。这样可以将所有内容保留在同一系统中。