我想将Postgresql从版本8.4升级到9.4.
documentation对我来说不是很清楚.
>如果升级,我会丢失旧数据库吗?
>如果我在升级后丢失旧数据库,如何备份我的旧数据库?
>如何升级我的psql?
我的Postgresql在CentOS 6.6服务器上运行.
这就是我解决问题的方法.
1. Yum Install PG9.4 2. wget http://yum.postgresql.org/9.4/redhat/rhel-6-x86_64/pgdg-redhat94-9.4-1.noarch.rpm 3. yum install pgdg-redhat94-9.4-1.noarch.rpm 4. yum install postgresql94-server 5. service postgresql-9.4 initdb 6. chkconfig postgresql-9.4 on
资料备份
7. su - postgres 8. pg_dumpall > dump.sql
恢复数据
9. service postgresql stop 10. service postgresql-9.4 start 11. su - postgres 12. psql < dump.sql
配置网络访问
vi /var/lib/pgsql/9.4/data/postgresql.conf
1. listen_addresses = '*' 2. port = 5432
/var/lib/pgsql/9.4/data/pg_hba.conf
# "local" is for Unix domain socket connections only local all all ident # IPv4 local connections: host all all 127.0.0.1/32 ident host all all 130.51.79.0/24 md5 host all all 10.210.29.0/24 md5 # IPv6 local connections: host all all ::1/128 ident
删除PG8.4
1. yum remove postgresql 2. ln -s /usr/pgsql-9.4/bin/psql /usr/local/bin/psql