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| title | kind | slug | created_at | tags | |||||
|---|---|---|---|---|---|---|---|---|---|
| Upgrade postgresql-8.4 to postgresql-9.1 on debian | article | upgrade-postgresql-8-4-to-postgresql-9-1-on-debian | 2011-11-22 |
|
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.