34 lines
1.0 KiB
Markdown
34 lines
1.0 KiB
Markdown
---
|
|
title: "Upgrade postgresql-8.4 to postgresql-9.1 on debian"
|
|
kind: article
|
|
slug: upgrade-postgresql-8-4-to-postgresql-9-1-on-debian
|
|
created_at: 2011-11-22
|
|
tags:
|
|
- Ubuntu
|
|
- debian
|
|
- dba
|
|
- postgres
|
|
- postgresql
|
|
---
|
|
Today I upgraded a production PostgreSQL 8.4 database to version 9.1. This was on a Debian server.
|
|
~
|
|
The first step is to make a full dump of your data. I personally like to store that dump somewhere safe before upgrading. As root:
|
|
|
|
su - postgres
|
|
pg_dumpall > dump.sql
|
|
exit
|
|
cp ~postgres/dump.sql /root/
|
|
|
|
Now you can safely remove the postgresql-8.4 and install postgresql-9.1:
|
|
|
|
aptitude purge postgresql-8.4
|
|
aptitude install postgresql-9.1
|
|
|
|
Next check the postgresql configuration in `/etc/postgresql/9.1/main`. If you make any changes, make sure to restart postgres with `/etc/init.d/postgresql restart`.
|
|
|
|
Postgresql 9.1 is now up and running, let's import our data back into it.
|
|
|
|
su - postgres
|
|
psql < dump.sql
|
|
|
|
That's all. You're now fully upgraded to PostgreSQL 9.1. |