我安装了两个 postgresql,9.5 应该使用端口 5433,9.3.4 应该使用端口 5432:
me@camb:/usr/lib/postgresql/9.5/bin$ ls -al psql
-rwxr-xr-x 1 root root 564464 Jan 7 14:54 psql
me@camb:/opt/pkgs/postgresql-9.3.4/bin$ ls -al psql
-rwxr-xr-x 1 root root 405960 Aug 5 18:52 psql
me@camb:/opt/pkgs/postgresql-9.3.4/bin$ cat /etc/group
postgres:x:200:
me@camb:/opt/pkgs/postgresql-9.3.4/bin$ groups postgres
postgres : postgres ssl-cert
我写了一个脚本来安装 postgresql-9.5 并从 9.3.4 迁移到 9.5
问题0:postgresql-9.5无法启动成功,为什么状态为在线
安装过程中的输出:
* Starting PostgreSQL 9.5 database server
* The PostgreSQL server failed to start. Please check the log output:
2016-01-19 19:41:49 UTC [16523-1] LOG: database system was shut down at 2016-01-19 19:41:48 UTC
2016-01-19 19:41:49 UTC [16523-2] LOG: MultiXact member wraparound protections are now enabled
2016-01-19 19:41:49 UTC [16522-1] LOG: database system is ready to accept connections
2016-01-19 19:41:49 UTC [16527-1] LOG: autovacuum launcher started
2016-01-19 19:41:49 UTC [16529-1] [unknown]@[unknown] LOG: incomplete startup packet
...fail!
invoke-rc.d: initscript postgresql, action "start" failed.
dpkg: error processing postgresql-9.5 (--configure):
subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of postgresql:
postgresql depends on postgresql-9.5; however:
Package postgresql-9.5 is not configured yet.
dpkg: error processing postgresql (--configure):
dependency problems - leaving unconfigured
Processing triggers for libc-bin ...
No apport report written because the error message indicates its a followup error from a previous failure.
ldconfig deferred processing now taking place
Errors were encountered while processing:
postgresql-9.5
postgresql
E: Sub-process /usr/bin/dpkg returned an error code (1)
Error while installing Postgresql-9.5:1
然后我做了一些测试:
me@camb:/usr/lib/postgresql/9.5/bin$ sudo service postgresql start
* Starting PostgreSQL 9.5 database server [ OK ]
me@camb:/usr/lib/postgresql/9.5/bin$ sudo service postgresql status
9.5/main (port 5433): online
以上错误是怎么回事?
顺便说一句,另一个错误是:
ERROR: role "postgres" already exists
问题1:为什么我不能使用/usr/lib/postgresql/9.5/bin/psql来登录数据库,但是我可以通过/opt/pkgs/postgresql-9.3.4/bin/psql来做到这一点
me@camb:/usr/lib/postgresql/9.5/bin$ sudo -u postgres /opt/pkgs/postgresql-9.3.4/bin/psql -p 5433 reporting_central postgres
psql (9.3.4, server 9.5.0)
WARNING: psql major version 9.3, server major version 9.5.
Some psql features might not work.
Type "help" for help.
reporting_central=# \q
me@camb:/usr/lib/postgresql/9.5/bin$ sudo -u postgres /opt/pkgs/postgresql-9.3.4/bin/psql -p 5432 reporting_central postgres
psql (9.3.4)
Type "help" for help.
reporting_central=# \q
me@camb:/usr/lib/postgresql/9.5/bin$ sudo -u postgres /usr/lib/postgresql/9.5/bin/psql -p 5433 reporting_central postgres
/usr/lib/postgresql/9.5/bin/psql: symbol lookup error: /usr/lib/postgresql/9.5/bin/psql: undefined symbol: PQsslInUse
me@camb:/usr/lib/postgresql/9.5/bin$ sudo -u postgres /usr/lib/postgresql/9.5/bin/psql -p 5432 reporting_central postgres
/usr/lib/postgresql/9.5/bin/psql: symbol lookup error: /usr/lib/postgresql/9.5/bin/psql: undefined symbol: PQsslInUse
错误是“未定义的符号:PQsslInUse”。这是什么意思?为什么我不能使用 /usr/lib/postgresql/9.5/bin/psql 登录数据库,但我可以通过 /opt/pkgs/postgresql-9.3.4/bin/psql 来登录?
谢谢
顺便说一句,我运行以下命令进行迁移:
sudo -u postgres /opt/pkgs/postgresql-9.3.4/bin/pg_dumpall -p 5432 | sudo -u postgres /opt/pkgs/postgresql-9.3.4/bin/psql -p 5433
谢谢